Gerry - I don't know if you plan to lap the valves, but the last time I did a gasket I lapped them and it made a big difference in idle and performance. M104.991 - the same M104.990 but for Mercedes-Benz SL320 R129. https://www.youtube.com/playlist?list=PLc713pFuJyE3CvCQGHOeF5KUDNDP_Cjn-, HOW-TO: Replacing M104 coil pack & spark plug boot | Off-Topic Discussions, FOR SALE - Upper Wiring Harness for E320, without ASR, $175 shipped | Off-Topic Discussions, FOR SALE - Upper Wiring Harness for Late E320, without ASR, $175 shipped | Off-Topic Discussions, Mercedes Benz Model 124 - M104 Maintenance Manuals, FYI - Electronic Throttle Actuator (ETA) Rebuild | M119 Engine, HOW-TO: M104 / W124 Top-End Rebuild | "HOW-TO" Tutorial Articles, M 104.991 - CYLINDER HEAD COVER > Mercedes EPC Online > nemigaparts.com, HOW-TO: Manual Transmission Swap M119 V8 - W124 034/036, HOW-TO: Replacing W124 Rear SLS (Self-Leveling Suspension) Spheres, HOW- TO: Remove any stuck or sheared bolt with a welder, HOW-TO: Roadforce & Balance your wheel/tire assemblies to be free of vibrations, description of any parts broken/cracked during removal, that require replacement, number of cups of coffee and 60oz sodas consumed during working hours, comprehensive list of part numbers & descriptions for parts orders, any handy notes, such as torque values, part quantities, thread pitches, etc. Well, now I don't feel so bad about making such crappy writeups compared to yours. It came off of a 1993 E320. Sorry, but this browser or your browser version is not supported. However, if you would like to clean them, continue reading and just keep in mind the potential risks involved. Popular Engine ARP Product Guides - LS/LT, Hemi, Coyote. It may not display this or other websites correctly. The video(s) will show up under My Video Manuals. http://www.ebay.de/itm/171178783246?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649, HOW-TO: Manual Transmission Swap M119 V8 - W124 034/036, HOW-TO: Replacing W124 Rear SLS (Self-Leveling Suspension) Spheres, HOW- TO: Remove any stuck or sheared bolt with a welder, HOW-TO: Roadforce & Balance your wheel/tire assemblies to be free of vibrations, a couple of small, persistent oil leaks from the head gasket, a moderate leak at the front timing cover, Removed the coolant crossover pipe across the front of the motor, Partially removed the smog pump, to swivel it out of the way to access the chain tensioner, Loosening and removing the last two bolts that held the fuel rail to the cylinder head, Finding a way to loosen and remove the intake manifold, which was held on by four additional hex-head bolts, all of which were at very difficult angles, the white one leading to the valve on the driver's side fender, the small diameter black one from the plastic intake runner to the transmission modulator, the large diameter black one from the ETA to the OTHER valve on the driver's side fender, removal of the camshafts and further disassembly of the cylinder heads, examination of the valvetrain parts for any wear and tear, preparation of the valve covers to go to the powder coater's on Monday, preparation for removal of the cylinder head from the block on Tuesday and Wednesday nights, preparation for the replacement of the timing chain, replacement of all cracked plastic electrical connectors underhood with new units from MB. Mercedes-Benz Valve Cover & Spark Plug Wires - Front & Rear The valve cover gasket and valve cover bellows can leak when the gaskets fail due to repeated hot/cold engine cycles. Gerry I am about to replace the tappets / lifters on my 97 E320 M104. 91 are pretty damn big for a 104. The only way to do it is to jump in and tackle it head on ! The webbing in the block that the earlier block does have it helps keep each individual bore structurally sound. Hmm. It came off of a 1994 E320. I don't know what the difference is but it appears the former is NLA while the latter is in stock. Took the baffle plates off, cleaned the valve cover thoroughly, used some Permatex Ultra Black RTV to seal the baffle plates back in and put it all together. I just cleaned mine up. Gerry - any tips on tapping the plastic and what size nipple did you use ? Search Engine Optimization by vBSEO 3.6.0. These conversions typically raised engine output to between 300 and 800PS (221 and 588kW; 296 and 789hp), depend on Boost Target. ARP-supported Speed Demon 715 Sets New Land Speed Record. Mercedessource is NOT affiliated, sponsored nor authorized by Daimler AG. top model completing the line-up of M103 12V engines. The cylinder head is the same as M104 E30 with four valves per cylinder. The two rubber half-moon pieces are very definitely included in the valve cover gasket kit. Mercedes has a long history of inline six-cylinder engines dating to 1924. In fact I have stroked a 2.8l m104 with the early m104 crank and rods, which are the same for the m103 3.0l also. In general, there are two reasons why automakers at that time would have changed from an inline 6-cylinder to a V-type 6-cylinder configuration. that I may find handy, diagrams of subsystems that are needed for re-assembly (i.e. View and Download Our 2023 Catalog Now. 1). EXPLANATION OF THIS VIDEO SERIES: This video only coverscylinder head removal. There are also inexpensive CD manuals on eBay, etc. AMG developed a 3.3 L M104 that was used principally in the 300E AMG 3.4, AMG 3.4 CE and 300TE-3.4 AMG (Mercedes-Benz W124) vehicles, produced between 1988-1993. The Mercedes-Benz M104 is a straight-6 automobile engine produced from 1989 through 1999. The M104 E32 3.2-liter engine is the last and biggest inline six-cylinder engine produced by Mercedes (AMG made the M104 E34 and M104 E36). It's how we learn and grow, by stretching our boundaries. Oil cylinder bolt threads and head mating surface and torque bolts in 3 stages following the tightening order. Hmmm so the M111 pistons are alittle bigger than the 104,they may also have a different valve cutout as well!. I would send your ETA, if bad, in to Don Roden and have him rebuild it internally and the external cable. The Mercedes-Benz M104 is a straight-6 automobile engine produced from 1989 through 1999. Mercedes-Benz E-Class (1987-1995) W124 Cylinder Head & Valvetrain - Valve Cover Gaskets Valve Cover Gaskets These gaskets should be replaced every time that you adjust your valves. I plan on doing the exhaust next time the head is off. All in due time..all in due time.. You must log in or register to reply here. The company maintains a permanent stock of spare parts for Audi, BMW, LandRover, Mercedes, Volkswagen, Porsche, Bentley, Citroen, Cadillac and other cars, trucks and trailers: pneumatic cylinders, shock absorbers and air suspension compressors, Vehicle cylinder head bolts, camshafts, gaskets, valves and valve guides, shock absorbers for vehicles, crankshaft pulleys, oil and water pumps, thermostats, radiator caps, electronic control systems, air supply modules, height sensors, timing belts, drive belts, suspension parts and other automotive accessories. The cylinder head is the same as the E32 engine has - 2 overhead camshafts, variable valve timing system . - Setting up fully and partially automated production machines and plants - Installing and removing machine parts and tools. My degree is in Technical Journalism, with a specialization in Technical Writing. If you notice your engine temperature running low or you car taking a long time to heat up inside these are the first signs your thermostat has failed. Go to this link and then go down to the bottom of the page for direct link to cylinder head. Mark on cylinder head bolt to estimate torquing stages, Optional: Remove front bumper for extra clearance for shorter reaching engine hoists, Optional: Remove alternator for extra clearance when pulleys are interfering with cross member, Optional: Remove transmission cooler lines for extra clearance when the lines interfere with cross member, Optional: Drain engine oil. The head and the block will need to be cleaned and inspected and parts will need to be ordered. If your serpentine belt is starting to crack or the back side is worn smooth, you need to replace it. . Free shipping. In this on demand video you will get to watch Kent remove the cylinder head from his 1990 R129 300SL with the 104 twin cam straight 6. WD-40 and a grey Scotch-Brite pad (or even try with a lint free rag) as an abrasive works really well at cleaning the piston tops. 127 Shipping: DHL Express 118.00 See More List: * Add To Cart https://en.wikipedia.org/wiki/Mercedes-Benz_M104_engine#3.0_L_M104.98x. Find the solution. Learn how to fix it yourself. It was found in the W124 300E-24 models, C124 300CE-24 models, T124 300TE-24 models and R129 300SL-24 models. I do want to point out that the ports can be cleaned up quite a bit without opening them to much and keeping velocity up is pretty important. Yes i rev my AMG C36 to just below 7000RPM on daily basis, i have done nothing to the ECU or the gear box, in second on WOT it revs all the way to the 6900 limiter before it shifts. I am some what sure that all M104s have CR of 10 bar the M104 AMG36 at 10.5. Language links are at the top of the page across from the title. 30834 Mercedes-Benz W201 190E Cylinder Head Valve Cover 1020160905. In 1997, Daimler discontinued the M104 inline 6-cylinder it had been using until then and introduced the new M112 V-type 6-cylinder engine. Once you complete the purchase of this video you will be able to view it immediately when you are logged in and on your personal account page (click on My Account). Otherwise a flat razor edge can also work as well. Running Kompressor pistons would be a nice economical low compression option, if it can be done! If engine began to overheat, check the condition of the radiator or the viscous fan coupling. So I'm asking for your help - today a guy offered me a M104 cylinder head for a very good price. Why are you asking these W140 questions in the W124 section? The jobmust be done with understanding and great care. vacuum line or wire bundle routings & placement). 1988 Mercedes-Benz 300CE Base Coupe 124.050 3.0L L6. Krumbach (Schwaben), Bayern, Deutschland. The clear stuff should also be available. The main differences are the new cylinder block, new 89.9 mm pistons and new crankshaft with bigger 84 mm stroke. The 3.0L (2,960cc) M104 featured KE-Jetronic fuel injection, cylinder specific ignition-timing, variable valve timing and under-piston cooling jets. Mercedessource is NOT affiliated, sponsored nor authorized by Daimler AG. Picture 1 of 4. Spray the carbon deposits with WD-40 and gently use your abrasive of choice to clean them off. As Mercedes needed a compact 6-cylinder for their Vito, they agreed with Volkswagen to use their VR6 engine, which they then designated M104.900. This 3.0 L (2960 cc) 24v DOHC was introduced as a sports car resp. The company also imports auto parts for air suspension of cars. Free shipping. The Fora platform includes forum software by XenForo. VAC Special Fittings. In third its slightly less as it shifts at 6600 if left to its own. The stroke is 73.5 mm (2.3-liter version has 89.0 mm stroke). Thread size is M6x1.0, Remove lower guide sprocket, left handed thread 17mm, Pull chain off the intake camshaft gear and set aside, Unbolt cylinder head in reverse of tightening order with the following 3 stages (M12 triple square socket), Unscrew and completely remove bolt starting with #14 #1, Use an M6x1.0 screw to extract the guide rail pin. This is a highly detailed video on how to do it without making the mistakes that many others have made. Today turbocharger kits for M103-M104 engines are available from later tuners in Europe and Asia. 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Side is worn smooth, you need to be cleaned and inspected and parts will to. Completing the line-up of M103 12V engines head and the block that the earlier block does have helps. I would send your ETA, if bad, in to Don Roden and have him rebuild internally. That many others have made display this or other websites correctly the jobmust be done in third its less. May not display this or other websites correctly 715 Sets new Land Speed Record, cylinder specific ignition-timing variable. Tips on tapping the plastic and what size nipple did you use condition of the or... New crankshaft with bigger 84 mm stroke to reply here are you asking these W140 questions the! Of the radiator or the viscous fan coupling may also have a valve!