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Old 11-13-2003, 06:39 PM   #1
wastedincome420
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What can be done w 87 325e

Hello everyone,
I just picked up a 1987 (manf. 6/87) 325e pretty cheap (which is why I also have a list of things to be fixed )
So I wanted to pick your brains to find out what can be done with car as far as up grades,etc go and also maybe some good pics of fellow members cars that in my cars style.
Also whaqt are some important thing that I should know about this model???
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Old 11-13-2003, 08:09 PM   #2
BMW_M52_M20
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The 325e is a very underrated engine putting out only 121bhp but 170lb of torque....

A chip from dinan or Jim Conforti has a gain of somewhere around 30hp, which is great because most chips give you only about 10hp........I want to do that very soon to my e30 325e.......

As far as personal experience, I have noticed a fair difference in gain from a cold air intake as well as an exhuast system.....I bought a SS Magnaflow system and increased the diameter of the pipe going to the resonator then to cat to 2 1/4" from 2" and it has made a nice bit of difference, less restrictive all around....

I know my suspension needs a bit of firming up just because it is old and worn, probably a new set of shocks and springs would do the trick, same for you if you find yours a bit lose.......

This model came out because it was the "economy model", but still produced enough torque to be respectable. Lots of expansion avaliable to this engine. Just get oil changes regularly, check for worn hoses or clamps......

It seems to be a soild engine with smooth response throughout the rev range.....Just remember it is an older car, so it should be treated like one and it will last much longer....


Hope this helps
Jay
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Old 11-13-2003, 08:11 PM   #3
BMW_M52_M20
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back shot.....
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Old 11-13-2003, 08:41 PM   #4
wastedincome420
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Thanks Jay,
I believe I heard something bout being able to swap heads from a "i" motor, for some added power. Not sure of all the details.
I'm allready planning on doing motor work with this car as its got 260k miles on it and head eith lifter or injector noises
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Old 11-13-2003, 09:58 PM   #5
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Strip the car, and track that biatch...!

Btw is there any budget swaps that could be done on the E30's?
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Old 11-14-2003, 12:49 AM   #6
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randy's e30 was a 325e
dont remember the year though
but change your bumpers for the plastic ones, lower, rims, new clutch and flywheel, and then some small stuff, plugs, wires, and maybe new distrubuter(or what ever makes the spark go to the wires)
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Old 11-14-2003, 12:51 AM   #7
jeremy
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switch to the "i" head....then you can have the torque of the "e" with the go of the "i"....
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Old 11-14-2003, 02:01 AM   #8
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The worthwhile bolt on mods start and stop at the chip. Everything else is placebo on that motor, the head is just insanely restrictive.

Like jeremy said, the "i" head swap is popular. I never researched the parts needed, but the results are pretty damn good for the money. I'd personally just go with an M50 swap.
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Old 11-14-2003, 03:06 AM   #9
wastedincome420
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Quote:
Originally posted by jeremy
switch to the "i" head....then you can have the torque of the "e" with the go of the "i"....
What all is needed to do the "i" head swap???Other then the head its self....Do you need to swap the ECU from an "i" ??? Do you also you the intake from the i or the e ???


Jeremy....What year is that car in you sig.??? I love the body kit..It looks great job well done
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Old 11-14-2003, 03:31 AM   #10
jeremy
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Quote:
Originally posted by wastedincome420
What all is needed to do the "i" head swap???Other then the head its self....Do you need to swap the ECU from an "i" ??? Do you also you the intake from the i or the e ???


Jeremy....What year is that car in you sig.??? I love the body kit..It looks great job well done
this should help you out http://member.rivernet.com.au/btaylo...30325es86.html


the car in my sig is a 1989 325i chasis with a e36 m3 engine........thanks
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Old 11-14-2003, 04:12 AM   #11
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Quote:
Originally posted by Mystikal
The worthwhile bolt on mods start and stop at the chip. Everything else is placebo on that motor, the head is just insanely restrictive.

Like jeremy said, the "i" head swap is popular. I never researched the parts needed, but the results are pretty damn good for the money. I'd personally just go with an M50 swap.
Dont agree with your first statement, other then the chip the most (maybe even more then the chip!) is a high ratio diff swap. The 318i unit just bolts on and its a 3.91, it make a hell of a difference on such a torquey engine.

The "i" head swap is only good if you also have the "i" diff....if you dont then is just about the same as the E with a chip and diff!
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Old 11-14-2003, 06:04 AM   #12
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I did the "i" conversion on my '87 528e. was pretty simple and very effective. Parts you need:

325i entire head (cam, exhaust manifold, etc.)
DME from same car
Upper end gasket set
Timing belt and all other needed tune up parts.

I suggest using the eta intake manifold, it has proven to keep the engine very torquey without sacrificing much upper end power.

You will have to have some machine work done. The eta block has provisions for a 4 bearing cam, the "I" cam and head have 7 bearings, you will need to have the proper oil journals machined (any good machine shop will be able to do it properly if you just explain how you need it to work) I also used the 3.46LSD but you will probably be better off with the 3.91. I just left it lower to keep the gears a little longer for the turbo system I later installed.
Alot of people also have added a schrick cam to the car instead of the factory 'i' cam with good results. I have not done this myself.

I did the whole conversion with the diff for about $1100 (junkyard parts) including rebuilding the head and all machine work.

Another suggestion would be to switch to the 325i flywheel and clutch. The eta's used a dual mass flywheel that was immensely heavy to smooth out vibration at idle, the 325i's flywheel is a whole lot lighter. There are also lightened versions of the i flywheel available also for a little extra coin, again, I haven't used the aluminum flywheel in my e28 yet (I haved used them in 2 other cars that I have built and I wouldn't suggest it for daily driving in those) , but I did swap to the single mass i flywheel and the engine revs very freely now.

BTW I also have the Dinan chip for the eta if you would like it, I can no longer use it with my current setup.

There is a great info board on yahoo groups for info on building eta's http://autos.groups.yahoo.com/group/mod_m20/
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Old 11-14-2003, 10:42 AM   #13
wastedincome420
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Wow...This board rocks...You guys have awesome info....I'm glad that I found this group..
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Old 11-14-2003, 01:07 PM   #14
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This is another really good resource, by a very respected member of the E30 community, Fred Kim: http://www.strictlyeta.net/328i_1.html 9 pages of info.
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Old 11-14-2003, 06:19 PM   #15
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Ahhh, you will probably want new pistons for yours to keep compression at a respectable level, this was not a concern for me, so I did not ever add them. But, using the stock bottom and the i top, the gains were very impressive. Definitely the absolute best $1000+ I have ever spent on any car that I have built.
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