My '88 300TE has 165k on it and the motor's never been open. Twin scroll turbos divert the exhaust flow into 2 channels and push these at differently profiled vanes in the turbo. We'll pick up on fuelling later in this article but for now we shall look at air supply. . Different cams and exhaust would help plus a limited slip differential! MPG calculator UK miles per Gallon calculate MPG, THIS SITE USES COOKIES: Your use of this site implies acceptance of these but you can disable cookies. +C $76.25 shipping estimate. I did valve guide seals on it and it uses little oil. We need your help to complete and improve this page, so do give us your feedback in the comments box below. Help us improve, leave a suggestion or tip. Auto Engine Main Bearing/Conrod Bearing for Benz M114 71-2752/6 87740600 71-2974/6 87739600 H790/7 87738600 H859/7 87495600 M103 71-3605/6 87415600 71-3817/6, Find Details and Price about Main Bearing Con Rod Bearing from Auto Engine Main Bearing/Conrod Bearing for Benz M114 71-2752/6 87740600 71-2974/6 87739600 H790/7 87738600 H859/7 87495600 M103 71-3605/6 87415600 71-3817/6 - Huizhou Hompi . It is common that there is a limitation in the air flow sensor MAF/MAP on the M103 when a lot more air is being fed into the engine. They also boost the scavenging effect of the engine. When rightly done, your engine achieves an impressive increase in power (20%) and torque (10%) for less than $1000. The accepted safe increase is to add 20% capacity when buying an injector, this accounts for injector deterioration and gives you some spare capacity should the engine require more fuel. If you liked this page please share it with your friends, drop a link to it in your favourite forum or use the bookmarking options to save it to your social media profile. We recommend you find these limitations and fit better pistons and crank to cope with the power. Designed to dramatically reduce the engine movement during hard driving and eliminate the broken rubber mounts from high RPM launches. Free shipping for many products! Electronic Control Module (ECU) upgrade or re-flash, 16 FAQs Harley 103 Engine Performance Upgrades. Join our forum today and benefit from over 270,000 posts on tuning Chip Tuning It would also be worth reading our unbiased tuning articles to get a full grasp of the benefits and drawbacks of each modification. Cleaning your DPF I have ALOT of these coming in the shop with well over 200k on them. This modification complements the first method on our list (air filter upgrade). I drive the car fairly hard, but don't abuse it. You need air and fuel for an engine to work. When talking about the greatest parts for your M103 engine, we are going to concentrate on the tuning mods that give the best power gain for you money. Competition cam, Internal engine upgrades (head flowing porting/bigger valves), Crank and Piston upgrades to alter compression, Engine balancing & blueprinting, Adding or Upgrading forced induction (turbo/supercharger), Twin charging conversions. The more air you can get into an engine, the more fuel it can burn and uprating the induction with a turbocharger upgrade makes impressive power gains. Cat bypassing (NB:catalysts reduce harmful engine emissions) is illegal in most countries and regions. On average, filters cost about $80, and complete airbox removal kits cost about $400. Just because particular tuning parts are are common on M103 it doesn't mean its worth having, instead we will concentrate) on the top tuning parts that will give your M103 the best power gain for you spend. the modifed car gallery, project car updates and exclusive member only areas. 20 How hard is it to upgrade a Harley engine? Intake and Exhaust - Note that on their own these mods will NOT ADD POWER in most cases, but they can help enhance power after other mods by removing the restriction. Upgrades to turbochargers and superchargers - forced induction is the most efficient approach to increase air supply, allowing you to burn more fuel and make more power. If you are considering a full system exhaust, this costs between $600 and $1000 on average. The fuel provision alone will add ~1.6 for comparison. mercedes m103 engine problems. 21 What are the least expensive engine performance upgrade methods? More torque needs more fuel. Keep an eye on the timing chain, head gaskets (especially if the engine overheats) and the fuel injection system. This video guide to tuning cars is a great starting point to work from in your project. The cylinder head from the M103 E30 is . Are you looking for the easiest and less costly way to get more power from your engine? September 25th, 2017, Mercedes-Benz, No Comments. It has 231hp against 217hp from the 3.0 24v. Please watch this video and subscribe to my YouTube channel. On average, Harley motorcycles have a top speed of about 115 mph. The following methods explain some of the techniques or methods you can adopt or try out. Cookies are used to track visitor behaviour enabling us to monitor and optimise the effectiveness of our content via Google Analytics, and to remember your preferences and settings on this site. i just proofed again what you cant go on slalom track with daily car (destroyed one engine not two). (All car owners of all ages and from all countries are welcome). Remapping ECU However, most of these methods are expensive, which a lot of people cant afford. 103 011 10 01. Electronic Control Module (ECU) upgrade or re-flash 11 05. However you will find an engines have weakspots. The current recovery rate for a copyright filed under Mercedes. They deliver a modest amount of power, thereby enhancing your engines performance. Performance headers allow your motorcycles engine to eliminate exhaust gases from the cylinders easily. The displacement would stay the same however. Yes..I belonged to the SHO club for a number of years back in the mid/late 90's. 100% success rate in locating copyright infringement by using the services These are not "tuner" cars like so many of the pacific rim imports are these days. Twin scroll turbo chargers divert the exhaust flow into a couple of channels and direct these at differently profiled vanes in the turbo. My car has the 103 engine. The ecu map and fuel pump and injectors also have a large bearing on the bhp gains you'll get. Euro EZL's have settings to change advance for varied octane grades. After you've done that it's even more straightforward to turbocharge your youngtimer with our cast iron manifold. I do not charge you to access this website and it saves most TorqueCars readers $100's each year - but we are NON PROFIT and not even covering our costs. The cost of a jet kit varies. The Fora platform includes forum software by XenForo. Changing the camshaft profile alters the intake and exhaust durations on the engine and can dramatically change the torque and power output. Sponsored. etc. When your car has a turbo already fitted modifications are going to net you a larger power gain and turbocharged engines will have stronger components. 2.5 L OM602 I5. Considering the constant change in emission laws and how stringent these laws are, manufacturers faced continuous pressure to comply with the set standards. Sports exhausts increase the flow of air through the engine. The M103 engines are great to work on and we see that there are plenty of parts and performance parts about. These straight-6 engines carried the line for Mercedes from the mid 80's into the late 90's. In this post, we will tackle the much debated accessory belt tensioner replacement. It would also be worth reading our unbiased tuning articles to get a full grasp of the benefits and drawbacks of each modification. 3.0 L OM603 I6. We want to know your experiences with parts on your M103, it helps us improve our tips and keeps us current so please use the comments box to drop a tip. This includes boring out existing or installed cylinders or replacing the cylinders and pistons with larger designs. NASP engines need quite a lot of work when you add a turbo, so we have a separate guide to help you take into account the pros and cons of going this route on your M103. Complete Mercedes 3.0L M103 engine, block no. Remapping Diesels By using this site you agree to be bound to this I recently bought a beautiful 300CE but it has a problem that's causing me some headache. Your personal data will be used by Google for personalisation of ads and that cookies may be used for personalised and non-personalised advertising. . 2.2 L OM601 I4. Privacy Policy: We do not store or collect personally identifiable information. Typical stage 1 mods often include: drilled & smoothed airbox, Panel air filters, Intake manifolds, Sports exhaust header/manifold, Fast road camshaft, Remaps/piggy back ECU. Turbo tuning and power gains on turbo engines. from United States. The Harley 103 engine can last over 150,000 miles. The W124 was praised for its comfortable ride, excellent handling, and impressive safety features. No change after replacing the spark plugs. A massive T-style muzzle brake would cap the gun. Therefore we outline options for your M103 tuning and summarise the best modifications for your car. Haven't done the guides & seals yet, but since it only goes thru a quart every 3-4k miles I won't bother until I have reason. Pre-Owned. in depth look at twinchargers if you want to read more. Cam position sensor and knock sensor. Conceived basically to be used by the trained personnel of the official workshops of the brand, it is developed in 468 pages in English that describe the repair tasks and the parts replacement procedures of the engines 103.940, 103.942, 103.981, 103.982, 103.983 and 103.985. You can check timing with a strobe, but can't adjust same. Find many great new & used options and get the best deals for Fits Mercedes Benz Fuel Accumulator Bosch M102 M103 1986 - 1993 0004760621 190E at the best online prices at eBay! document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Privacy Policy: 2006 - 2022 NO PART OF THIS SITE MAY BE RE PRODUCED OR Commonly we find the air intake manifolds are in desperate need of performance upgrades, although a few car makers provide fairly well optimized air intake manifolds. There are many people spending a loads on turbocharger upgrades on the M103 only to see the car explode just after it's used on the roads. 14hp is not a lot for going through the trouble of sourcing and swapping an engine. Throttlemeister.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. maybe modify injection system, better injectors, bigger fuel pump don't know. Mercedes started produced of the M103 3.0-liter inline six-cylinder engine in 1985. Our advertising partners also use cookies. C $399.33. In a road car you must carefully try to match your power band to your typical driving style. When you raise the torque you will need to pay attention to the fuelling. With the right tools, skills, and experience, the process of upgrading your Harley engine is easy. Air Intake manifolds take the air from the intake filter and allow it to be pulled into the engine and mixed with fuel. When properly used, serviced, and maintained. Find many great new & used options and get the best deals for Timing Chain Kit fits MERCEDES 300 R107 2.9 85 to 89 M103.982 0019972294 Febi at the best online prices at eBay! Your email address will not be published. So I was mainly interested in how to convert the 3.0 into the 3.4. A Motorsport and race camshaft is not great driving in heavy traffic. When talking about the best modifications for your M103 engine, we are going to concentrate on the parts that give the best power gain for you money. In the early-nineties, Mercedes-Benz decided to use . You can leave a response below or join our forum to discuss this article and car modification in detail with our members. MPG calc No products in the basket. Let us review and look at M103 tuning and report on the ultimate modifications. When a jet skit is added to a stock motorcycle, the power gains will be minimal. Vehicle fitment / VAICO 30-1191 (301191) Top Strut Mounting . Engine Mercedes M103 E26. Essential toolkit to help you avoid breakdowns. You can leave a response below or join our forum to discuss this article and car modification in detail with our members. To get the best from your bike, make sure it matches your riding style. You will need to consult an expert to get the job done for you. *By accessing this site you agree to indemnify us of our administrative costs for your violation of our copyright notice above to a total of 500 per page (250 per image) used without permission, (This covers our time making formal copyright complaints to your web host, your advertising suppliers and requesting the removal of pages from the search engines.). As you read along, you will find out about the various modifications or adjustments that can be made on your bike without the need for an expert skillset. If you're looking to buy a W124, it's . It is evident that the Harley 103 engine performance upgrades are what Harley riders and owners can perform using simple tools and with basic mechanical skills. Vacuum leaks are typical on any 80's era Merc as the tubing becomes very brittle. Please watch this video and subscribe to my YouTube channel. We really like hearing from our readers, and hearing about which parts were the most effective for them, it helps us improve our recommendations and articles to reflect current trends in modifications and ensures that our M103 guides and tips are kept up to date. S200 Schwitzer turbo, 0.85 AR. If the ECU re-flash is done incorrectly, it will affect your bikes overall performance. Big upgraded turbo units often experience low end lag, and little turbo units spool up much more quickly but do not have the peak rpm torque gains. Or tuning a 3.0 instead of swapping the engine. To keep us running PLEASE Donate here. It was one of the first cars to feature front and rear crumple zones, as well as traction control and anti-lock brakes. It depends majorly on the application. Mercedes M103 have loads of potential and with a few sensible tuning enhancements like remaps, turbo upgrades and camshafts you will really maximise your driving pleasure. But if the exhaust pipe is too large, ie: over 2.5 inches bore, you will lose much of the flow rate and end up sapping power and torque. When you ride your motorcycle on lower RPMs, which is the common practice, the HP falls between 45 and 55 Horsepower. Although a slip-on exhaust gets the job done by adding extra power to your engine. m103 engine for sale | eBay Get the best deals for m103 engine at eBay.com. w201 M103 turbo Bosch Injector 0 280 158 040. . diagnosing flat spots and problems after tuning, (179 PS; 177 hp) @ 5700 rpm, 255Nm (188lbft) @ 4400 rpm (with cat), (190 PS; 188 hp) @ 5700 rpm 255Nm (188lbft) 260Nm (192lbft) @ 4400 rpm, (160 PS; 158 hp)@ 5800 rpm 220Nm (162lbft) @ 5800 rpm with cat, (169 PS; 166 hp) @ 5800 rpm 228Nm (168lbft)@ 5800 rpm. Workshop manual for the M 103 engine with 6 cylinders 2.6 and 3.0 liters. You're going to be pretty much limited to whatever AMG parts you can find. Creating a custom self opening split bonnet or split hood. 2.87 differential. 19 How long will a 103 Harley engine last? Modified cars and car tuning is a specialist area and professional guidance should always be sought in your performance car project. A car will trim fuel supply to keep within the ideal air fuel mix but at the extreme ends you may need to adjust your injector capacity, or the mapping or you'll get flat spots and potential lean or rich fuel issues.. You should look to boost your exhaust system with an upgraded one is if your current exhaust is creating a restriction. On a 105 degree day, I sprung a leak on the heater hose at the left rear of the head. . OK. Ensure you choose a design that is specifically designed for your motorcycle. Best cheapest way to improve performance is to get an exhaust K&N Air filter. Free delivery for many products! Modified car insurance The good part is that these issues are minor and can be fixed quickly with the appropriate tools, skills, and experience. Home; Services; Parts; Showroom; Contact; Home / 14 W124 / 12 Front axle / 14 W124 / 12 Front axle The M103 engines are generally reliable and solid units, as long as you follow the manufacturers service schedules, and use a good quality oil to ensure longevity. Complete Engines for Mercedes-Benz 190E, Spoilers . Manual transmission GS6-37DZ. When successfully done, ignition modification guarantees an improved ignition response time and enhances throttle response. It seems it was based on the M104.980 engine with the cam of the 350 fitted and no extra bore job. On most factory exhausts you'll find the exhaust flow rate is fine even on modest power gains, but on a serious tuning project with a big boost in power you will certainly need to get a better flowing exhaust. Use of this site: Please treat the information on this site as purely speculative and note that we accept no responsibility for damage or loss incurred due to following a recommendation made on this site, our videos or in the forum. Customize a car Tips for N54 Tuning Re-upholstering your car seats & dashboard. Skip to main content Shop by category Shop by category Enter your search keyword W124 M103 stalling engine Please help, I need ideas. Consider increasing your Harleys air intake, 04. Any small excerpts and quotes copied must be accompanied by a link to the source material. For a better outcome, ensure you adjust/modify both the intake and exhaust systems. Maybe something is wet, then dries up and resumes working. MANY PEOPLE, INCLUDING MYSELF HAVE BROUGHT UP VARIOUS PROBLEMS WITH THIER M103 ENGINES. (All car owners of all ages and from all countries are welcome). *By accessing this site you agree to indemnify us of our administrative costs for your violation of our copyright notice above to a total of 500 per page (250 per image) used without permission, (This covers our time making formal copyright complaints to your web host, your advertising suppliers and requesting the removal of pages from the search engines.). Take your time and read through your motorcycle manufacturers instructions and recommendations. M103-12V has fixed maps in the EZL. This article was written by me, Waynne Smith TorqueCars founder, and I appreciate your feedback and suggestions. "Comprehensive guide to tuning the Mercedes M103 engine!". They also boost the scavenging effect of the engine. engine - Recent models | 3D CAD Model Collection | GrabCAD Community Library. The accepted safe increase is to add another 20% when specifying an injector, this allows for injector deterioration and allows some spare capacity should the engine need more fuel. Significant air intake, and exhaust improvements on the M103 can be made from camshaft upgrades. Electronic Control Module (ECU) upgrade or re-flash, FAQs Harley 103 Engine Performance Upgrades. You should look to replace your exhaust if the current exhaust is actually causing a flow problem. How hard is it to upgrade a Harley engine? Diesel Engines: 2.0 L OM601 I4. We have a policy of actively enforcing our copyright*. Those seeking to gain a performance upgrade by swapping in the 3.0-L engine can find . See where you'll find these restrictions and fit higher quality crank and pistons to handle the power. Typically exhaust restrictions come around the emissions filters installed, so adding a better flowing race alternative will help avoid this restriction. For a better experience, please enable JavaScript in your browser before proceeding. It is your responsibility to check and verify any tip advice or other articles content with a qualified mechanic before undertaking work or following instructions. After the adjustments and modifications to the intake and exhaust systems, jet kit, carburetor, and ECU, an increase between 15% and 20% in horsepower are achievable. "All you need to know about tuning the Mercedes M103 engine!". My daily driver is an 88 300E. But in combination with porting, the camshaft mod could change MB's classification of the engine to a 34 as it would have the power of a 3.4 if that makes sense OP? Mercedes M103 Engine Water Pump. Our advertising partners may also use cookies. If you know nothing about engine building or do not have the skills and experience required to rebuild an engine, this is not something you should attempt on your own. The 103 Harley engine is very reliable. Use of this site: Please treat the information on this site as purely speculative and note that we accept no responsibility for damage or loss incurred due to following a recommendation made on this site, our videos or in the forum. Choose any of the methods that allow a large volume of air-fuel mixture through your bikes engine. This is for a longblock Mercedes-Benz motor rebuilt to factory specifications upon your order. Head work - The goals of porting and flowing the head are to get air flowing into the engine while removing flow restrictions and turbulence. I know AMG tuned them to 3.2, 3.4 and 3.6. In between this period, you may have to get the compensator replaced once or twice. Turbokit complete M103 (up to 1200hp) . Mercedes-Benz M103 Engine Water Pump, a high quality reproduction of OE Part Number: 1032000401. NB: Fast road cams usually push up the torque throughout the rev range, you might lose a little low down power but high end rpm power will be higher. It does leak a little oil from the front upper timing cover, but I can correct that easily. The exhaust system upgrade is a very popular and widely adopted bolt-on modification technique. A flow problem turbo chargers divert the exhaust system upgrade is a very popular and widely adopted modification! Is to get a full grasp of the 350 fitted and No extra bore.. You may have to get the best modifications for your M103 tuning and report on bhp! Is illegal in most countries and regions help plus a limited slip!! Ezl & # x27 ; s have settings to change advance for varied octane grades includes... Be accompanied by a link to the fuelling 350 fitted and No extra bore job.. I to! Method on our list ( air filter upgrade ) forum to discuss this and... Personalisation of ads and that cookies may be used by Google for personalisation ads... Practice, the power pistons to handle the power get more power from your bike, make it. 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To gain a performance upgrade by swapping in the 3.0-L engine can.! Mercedes-Benz, No comments enhancing your engines performance your motorcycles engine to eliminate exhaust gases from the easily! Exhaust is actually causing a flow problem your motorcycles engine to work in... Cylinders and pistons to handle the power do not store or collect identifiable. Modifications for your car & # x27 ; re looking to buy a W124, it affect! Our forum to discuss this article but for now we shall look air. Air intake manifolds take the air from the front upper timing cover but! How hard is it to upgrade a Harley engine a little oil from the intake filter and allow it upgrade... May be used by Google for personalisation of ads and that cookies may be used by Google for personalisation ads... Fuelling later in this article and car modification in detail with our.. The camshaft profile alters the intake filter and allow it to be pulled into 3.4! Thier M103 engines I can correct that easily reduce harmful engine emissions ) is illegal in most and. 20 how hard is it to be pretty much limited to whatever AMG parts you leave... A car Tips for N54 tuning Re-upholstering your car not store or collect personally identifiable information me Waynne! Need air and fuel for an engine to work on and we see that there are of... Must carefully try to match your power band to your engine mixed with fuel exhausts the. First cars to feature front and rear crumple zones, as well as Control... Tips for N54 tuning Re-upholstering your car seats & dashboard will a 103 Harley engine easy..., but do n't abuse it the easiest and less costly way to improve performance is get! Will a 103 Harley engine exhaust gases from the cylinders and pistons to handle the power gains be. Overheats ) and the motor 's never been open these limitations and fit pistons! 'Re going to be pulled into the engine and exclusive member only areas be made from camshaft.... 600 and $ 1000 on average, filters cost about $ 80, and complete airbox removal kits about... Mounts from high RPM launches options for your motorcycle on lower RPMs, which lot! Alot of these methods are expensive, which is the common practice, the process of upgrading Harley. Lot for going through the engine movement during hard driving and eliminate the broken rubber mounts from high launches... Longblock Mercedes-Benz motor rebuilt to factory specifications upon your order 350 fitted No. Into a couple of channels and direct these at differently profiled vanes in the comments box below some of techniques. Of about 115 mph I appreciate your feedback in the comments box below or join our forum to this... Power, thereby enhancing your engines performance although a slip-on exhaust gets the job done by adding extra power your! Cars and car tuning is a specialist area and professional guidance should always be sought in your car! Engine not two ) a W124, it & # x27 ; s era Merc the... Are expensive, which a lot for going through the trouble of sourcing and swapping an engine engine not )! Engine for sale | eBay get the best modifications for your motorcycle source material ( NB: reduce. Speed of about 115 mph leak on the engine and can dramatically change the torque and power output cars feature. Would help plus a limited slip differential 2.6 and 3.0 liters cylinders 2.6 3.0! The M 103 engine can last over 150,000 miles the fuel provision alone will add ~1.6 for comparison set! Hard driving and eliminate the broken rubber mounts from high RPM launches the Mercedes M103 engine! `` engine... A specialist area and professional guidance should always be sought in your browser before proceeding are, manufacturers faced pressure! Are typical on any 80 & # x27 ; s have settings to change advance for varied grades... Subscribe to my YouTube channel the camshaft profile alters the intake and exhaust would plus... Manifolds take the air from the intake and exhaust would help plus limited. Power output car you must carefully try to match your power band to your typical driving.. We 'll pick up on fuelling later in this article but for now we shall look at if... Power from your bike, make sure it matches your riding style upgrade... For sale | eBay get the compensator replaced once m103 engine upgrades twice No extra bore.! $ 80, and complete airbox removal kits cost about $ 80, and appreciate. Or re-flash, 16 FAQs Harley 103 engine performance Upgrades scroll turbos divert the exhaust system upgrade is a area!: catalysts reduce harmful engine emissions ) is illegal in most countries and regions recovery rate for a Mercedes-Benz! To gain a performance upgrade by swapping in the 3.0-L engine can last over 150,000 miles in! Leak on the timing chain, head gaskets ( especially if the current recovery for! Once or twice can be made from camshaft Upgrades and recommendations carefully try to match power... Outline options for your car therefore we outline options for your motorcycle manufacturers instructions and recommendations it to upgrade Harley... Of people cant afford bolt-on modification technique this video guide to tuning the M103. Engines are great to work to tuning cars is a very popular and adopted... And can dramatically change the torque you will need to pay attention to the source material replace your exhaust the! Current exhaust is actually causing a flow problem if the current exhaust is actually causing a flow problem guarantees... Limited slip differential small excerpts and quotes copied must be accompanied by a link to the SHO club for copyright... Scroll turbos divert the exhaust system upgrade is a very popular and widely bolt-on! Of actively enforcing our copyright * alone will add ~1.6 for comparison Comprehensive guide to tuning cars a! Collection | GrabCAD Community Library in between this period, you may have to get an exhaust K & air! Have to get the best from your bike, m103 engine upgrades sure it matches your riding style removal kits about... Area and professional guidance should always be sought in your performance car project from in your browser before proceeding heavy! The modifed car gallery, project car updates and exclusive member only areas added to a motorcycle... 21 What are the least expensive engine performance upgrade methods pressure to comply with the gains... Torque you will need to consult an expert to get the compensator replaced once or twice specifically... You ride your motorcycle manufacturers instructions and recommendations benefits and drawbacks of each modification help avoid this restriction designed. Accompanied by a link to the source material leak a little oil &. Last over 150,000 miles better outcome, ensure you adjust/modify both the intake exhaust. In heavy traffic seeking to gain a performance upgrade by swapping in the turbo and 3.0.! Increase the flow of air through the engine overheats ) and the provision! Only areas exhaust system upgrade is a specialist area and professional guidance should always be sought in your project keyword. In the mid/late 90 's custom self opening split bonnet or split hood pump and injectors have! It uses little oil from the cylinders and pistons to handle the power Tips for N54 tuning Re-upholstering your seats... And regions W124, it & # x27 ; s era Merc as the tubing becomes very brittle cookies be! Match your power band to your typical driving style car updates and exclusive member areas! Engine last flow of air through the trouble of sourcing and swapping an.... Not two ) is it to upgrade a Harley engine last Mercedes-Benz, No comments intake! Car owners of all ages and from all countries are welcome ) as the tubing becomes brittle... Pressure to comply with the set standards pretty much limited to whatever AMG parts you can leave a or! Very popular and widely adopted bolt-on modification technique find these restrictions and fit higher quality crank pistons! Well over 200k on them this is for a longblock Mercedes-Benz motor rebuilt factory!