3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
86 is a good year! too bad you dont have an es so you would have an LSD diff.
well here is what you need to do.
To gain a higher redline out of your eta you will need to chip it or take out the 1.0Motronics that is slowing you down and upgrade to what all 88-89 e30 have which is 1.1/1.3Motronic, the only difference in the 1.1M and 1.3M is that 1.3M uses the updated #173 ecu. which is what is going to give you your higher redline which is 6800 and if you chip the #173ecu you will have 7000+ redline.
so now that you know what you need to do here is a link to my 2.7i how to and 1.1/1.3 Motronic upgrade!
thanks i do happen to have a couple of friends who know more about BMW engines then alot of the BMW certified techs so im in good shape on the making sure it will run aspect. Is the higher redline going to have an effect on were my peak torque and horse power will be, if not then then changing the motronic will not be worth it. And is just changing the motronic going to make my cam turn faster or will i need to upgrade that to? thanks
.... My 325es had plenty on nice low end torque get your self a LSD, comp chip, K&N intake, and exhaust and you'd me good!
__________________ 1991 Ford Taurs SHO 5 Speed White on Tan
1996 Chevy Lumina LTZ Rep 3.4L
1992 318i Coupe parts car
1992 325i Ls1 swap with a T56 6 speed 12.2 quarter mile
1976 Mercedes Benz 300D with a Ford 5.0L Fuel Injected soon to be Modded I am Captain Obvious
Thanks for all the input but all this wont be for a while. im going work on the exterior first it performs fine for what i need at the moment, but all those are cheaper alternatives to putting the M motor in it when it comes time to work on the performance ill make the choice depending on how much money i have to blow. once again thank you.
First off, you can't "turn the cam faster"... it will always turn exactly half the speed of the crankshaft! You may have higher lift... longer duration or you can advance or retard the cam timing. And as for increasing your redline... not real smart considering the valve train on the ETA connot handle it and above 5500 you start to float the valves as the springs can't keep up. If you wan't more HP and a bit sportier mill... just put a 2.5l M20 in it... for that matter if your going to go to that much trouble, just find a m52 or an S52 and do it up right. ETA= low end torque, longevity, excellent fuel mileage, and ease of drivability. Not meant to be sporty.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.