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#1
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N/A tuning the M102/103
There are plenty of people interested in turbo/supercharger setups for the 2.0, 2.3, 2.6 and 3.0 engines; but perhaps we could have some general suggestions for what sort of mild engine work these engines are likely to respond to, for gains of ~10-20 bhp as opposed to 50+, aside from exhaust or a cold air intake.
I don't really want to spend any money on parts, but I do have access to a fully equipped workshop and friends with a historic race car preparation workshop & machine shop. I also may have some top end work soon (chain/tensioner.. valve stem seals). So what would it make sense to get done cheaply, easily and reliably using these facilities? This is my daily car and I don't intend to go drag racing or anything, just make those 1996cc's work a little harder for me . thanks Russell
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190E's: 2.5-16v 1990 90,000m Astral Silver 2.0E 8v 1986 107,000m Black 2nd owner http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg |
#2
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for a 190e 2.0, the quickest increase HP is to install a late(after 87) 2.3 engine that makes 130HP. A good used engine with fresh valves & rings would make a 25HP increase over the 2.0!
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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Hmm good point I'd forgotten about that..
The 130bhp 2.3 is only 8 bhp up on the my euro 2.0 injection though, so not much of a gain for some reasonably major work . But the extra torque would be welcome. Any other suggestions guys? Surely our combined knowledge of tuning such solid, well-engineered engines can't end at forced induction and engine swaps! That would be terribly sad! I am aware, though, that 122bhp from 2.0 litres and 8 valves isn't a bad figure at all back in the '80s, likewise 188bhp from 3.0 litres and 12 valves in the M103 so maybe it's asking too much. The problem with six-cylinder/V8 engine swaps is finding another engine anything like as good as mine, then changing the brakes/suspension etc, a new transmission, which all = £££, and still it won't have the handling/ride balance it did before. I just want something fun to think about to make taking the engine apart that much more exciting!! thanks Russ (prays)
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190E's: 2.5-16v 1990 90,000m Astral Silver 2.0E 8v 1986 107,000m Black 2nd owner http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg |
#4
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Schrick makes performance cams for the M102, and Bekkers used to have headers. I've heard the cams really only give you a few more hp in the top end and can actually take away from the bottom end. The headers may only add a few hp as well. I think with the cams, headers, and a large-bore exhaust, you may add 15-20hp in the top end.
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Mike -W126C 560SEC 040 Black *6.0L AMG M117 32v Hammer -W163 ML320 Brilliant Silver -W124 300E Pearl Black |
#5
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might shave the head and while you're at the valves go ahead and open them up, and then the cam would be more beneficial. Maybe shave the crank too. I'm not sure how safe that is though, perhaps a full engine balance? But it's probably pretty good anyway. Personally, if I had good access to all that stuff and a little extra cash, I'd go all out. Screwing up a 2.0 isnt too bad. And if it failed I wouldn't mind just upping to a 16-Valve. Ohhh, and definitely a tornado in the intake hose.
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#6
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I would port & polish your head with aftermarket cams and a header. It will give you good hp.
Quote:
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1985 Mercedes 190E 2.3(Sold) |
#7
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Quote:
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190E's: 2.5-16v 1990 90,000m Astral Silver 2.0E 8v 1986 107,000m Black 2nd owner http://www.maylane.demon.co.uk/190esmall.jpghttp://www.maylane.demon.co.uk/190esmall2.jpg |
#8
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On the 2.3 engine I was quoting SAE rated USA spec horsepower & you are using DIN ratings. The DIN rated 2.3 8-valve engine makes 136HP & with a little work will make 140-145 DIN hp and that is 20-25 more than the 2.0 that is in your car now! With a bit of compression & a good exhaust system you will have a 20% increase in power by installing a rebuilt 2.3 with a few tweeks!
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#9
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Quote:
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~Jamie _________________ 2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's. 1986 190E 2.3 Black, Auto, Mods to come soon..... |
#10
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The 1987 & later USA cars have 9/1 compression & make 130 HP SAE! The biggest change is PISTONS!
I raced one of those engines for 3 years & we were making 165HP with only 9.5/1 compression & free flowing exhaust. I did use euro spec(USA reground to euro) cam with adjustable rocker arms!
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#11
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What are the specs on the Euro M102 cam vs. that of the US ?
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