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#1
01-25-2004, 05:33 PM
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need help,190 2.3 has the same engine number
from 85 on up. i was told i needed a 87=88 motor for my 88 190e 2.3. the 91 engine does not work? ,but has the same engine number. going to bone yard tuesday. some of the motors do not have a body to them. hate to go to all the trouble installing a motor that will not work. can i put the 91 in using my manifolds.
any help would be nice . don't trust the person at the yard to know . he should, but i want to do this one time if possible. did any 88's have a dual roller timing chain, mine does not. thanks rich
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88 300E White, sold 9-04  88 190E Black 2.3 sold 90 300CE White, Grey sold 12-24-04  92 400E White,Grey Sold 5-06  90 300CE 91K Signal Red,Black Sold 2007 1989 300CE Smoke silver,Tan Sold 1-08 1993 300E 3.2 M104 motor  1991 300CE White,Grey  1994 E420 beautiful car,gone to new home 1994 E320 Smoke an Parchment.Beautiful car 
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#2
01-26-2004, 08:04 AM
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The 1991-93 2.3 engine is different INSIDE! Different pistons & cylinder head!
YOU can use that engine in any 1987 & later chassis with the original intake & exhaust manifolds.
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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
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#3
01-26-2004, 01:19 PM
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I put a 91 engine in my 88 190e. My 88 had a single row chain and the 91 engine has a double. I had to use my old manifolds because the O2 sensor is in the manifold on the 91 and there is a pipe that goes from the exhaust manifold to the intake manifold on the 91. I also had to swap out a few sensors in the head to match up with my wiring harness. On the 91 engine the water pump has a temp. sensor, but on my 88 it was in the head so I just matched everything up, and it seems to work fine.
FYI.... About a month or so after i had the engine installed I noticed one of the chain guides was broken, and then after i replaced it , like a week later the plastic cover of my tensioner blade broke and I had to remove the front cover to replace. This was a pretty big project, there was just a lot of stuff to remove and deal with. So you may want to do yourself a favor and pull the front cover(which also requires the oil pan removed or lowered) and replace the chain guides, and tensioner blade. I wish i would have done this with the engine out of the car, before i had everything hooked up and so much more room to work!! I got my engine from Pat at Potomac German Auto. Give him a call, he's super nice and great to work with!
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1988 190e 2.3 with 91 engine
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