Humm sounds like a lot of work...
What is your budget?
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I have a car without an engine and I know where I can get a free 2.7 and a cheap 2.5.Leave a comment:
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Thanks and for you question...
Why do you want to build a 2.7?
Is your motor in need of a rebuild?
Or does it run great and you just want it faster?Leave a comment:
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If you use a 2.7 crank in a 2.5 block with the 2.5 long rods and custom pistons where can I buy the pistons. I have a 1990 325is so I don't have to do the converson.Leave a comment:
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No, all of the 173 ECU's are the same. However, there are different chips available from numerous sources, some better than others. Since you have an extra ECU (173), I would try swapping that first. (I'd be interested to know what chip # is in the 173 box with the 5500 rpm rev limit.)
It's possible, unlikely, but possible that someone sold a Motronic 1.1 box with a "173" cover. (Same connectors, different programming.) If so, I would think that your 2.7"i" would be running poorly with the "i" cam.
Just my .02Leave a comment:
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Well I looked a couple days ago to make sure because that was the first thing that came to mind, because I was given a 173 in a box of parts with the car too. A 173 is in the car though. Are there different 173's? If so I am just going to throw that other one in there and see what happens.Originally posted by jmc1590 View PostLeave a comment:
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Or he doesn't have the 173 ECU that he thinks he does. Before getting another chip, I would verify which ECU is being used. (Could even be a 154 unit from a Super Eta, which would explain the 5500 rpm limit.)Leave a comment:
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He doesnt have the right chip installed. Sounds like its only got an e chip that is good for 5500 rpm. You need to call around to see if you can get a chip to raise you e computer's rev limit up to 6500 or so. Markd has made a few of them. Other choices are to convert to 1.3 like it explains at the beginning of this thread, or go standaloneLeave a comment:
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Okay I got a question that I have heard multiple answers to, so let me ask it here. My 2.7 revs to about 5500 and the limiter cuts in, I am wondering why it doesn't go at least until the I's limit. I didn't do the swap, bought the car with it, here is what the PO put in the for sale ad:
Motor:
88 325e
M30 injectors
M30 AFM
3.0 bar FPR
"i" head swap
K&N Filter
Head swap:
Re-manufactured "i" head
"i" intake manifold
"i" Throttle body
173 ECU
"i" cluster
solutions?Leave a comment:
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Think of a 2.7i this way your 82-87 325,e,es has the 2.7L 9.0:1 compression M20 and the 87-92 325i,is,ix have the high performance 2.5L 8.5:1 compression M20. Now if you have both an e and an i then take all of the high performance i parts off and bolt them on to the e and you will have a high performance, high torque 9.0:1 compression 2.7L M20. This i the quick way. The long way is putting on the i head which is not necessary for this quick performance upgrade.
Now if you have an i car then I am going to suggest getting any 2.7 crank and use your i rods and buy custom pistons that already have valve reliefs cut in them and at a compression of your choice.Leave a comment:
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no start
All rite, the starter is fine and the solenoid is not getting power. When I run a wire to the solenoid pin to the power pin on the starter it turns over but it wont turn over with the key.
I have some wires that aren't connected to anything, maybe one of these are the problem???
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