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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 05-21-2014, 08:13 PM
estage237 estage237 is offline
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Location: Nrew Hampshire
 
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Mein Auto: 1988 e30 325
Thumbs down E30 helpp

Hey guys new to the forum. I have an e30 325e 1988 that I bought and it had a slight tick to it. We took the head off and looked at pistons and someone put 325i pistons in it and shaved the head so it would fit. Found out tick was broken rocker arm, but will this be a problem in the future? want the car to last and not sure if this will cause problems. Pistons aren't hitting head or anything
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  #2  
Old 05-21-2014, 08:55 PM
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downhiller downhiller is offline
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sure you dont have the super eta?


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  #3  
Old 05-21-2014, 08:59 PM
estage237 estage237 is offline
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I'm not sure how can I tell? And it looks like head was done by someone else not manufacturer
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  #4  
Old 05-23-2014, 02:58 PM
astroboy424 astroboy424 is offline
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Mein Auto: e30 325i
How do you know if it's a 325i pistons?

Super eta means you have a 325i head on top of the short block. Giving you more rpm and keeping the low end torque.
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  #5  
Old 05-23-2014, 03:03 PM
estage237 estage237 is offline
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Mein Auto: 1988 e30 325
Has domed pistons rather than flat. Has an e head though


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  #6  
Old 05-23-2014, 03:12 PM
astroboy424 astroboy424 is offline
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Got to fix that rocker arm. Bad news in the long run. Btw your mpg gets worse if you don't do a valve adjustment.

You probably bought a motor that might of been blown or snapped a piston rod.. but I think it might of been blown. And the guy bought a new head shaved it and sold the car to you.. case closed.. lol jk

But basically you have custom pistons. Check your compression, if the guy didn't do his math. You're looking at a project lol
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E30 325i MODS: bilstein struts, m3 bbs, thrush turbo muffler w/ 2.5 exhaust, ngk v-power.

E36 325i - for sale no motor
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Old 05-23-2014, 03:14 PM
estage237 estage237 is offline
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Location: Nrew Hampshire
 
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Alrighty haha thanks! Know anyone selling 325e e30 head?


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  #8  
Old 05-23-2014, 03:28 PM
astroboy424 astroboy424 is offline
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Your going to need new oem pistons. Take the head apart, put new pistons in and see from there. OR, you can get a 325i head and a new dinan ecu and you'd be squared away since you have domed pistons. OR, just pray the compression is correct and get a new rocker arm and call it a day.
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E30 325i MODS: bilstein struts, m3 bbs, thrush turbo muffler w/ 2.5 exhaust, ngk v-power.

E36 325i - for sale no motor
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  #9  
Old 05-23-2014, 03:44 PM
estage237 estage237 is offline
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Gotcha sounds good man


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  #10  
Old 05-23-2014, 03:48 PM
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downhiller downhiller is offline
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if i remember right both 2.7 and 2.5blocks have cupped pistons (dont know the correct term). so the po was probably trying to build a high compression motor to boost performance.

shaved head could of been from it being warped. the tick could be from improper timing which in turn could be detonating.


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  #11  
Old 05-23-2014, 03:58 PM
estage237 estage237 is offline
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I'm going to rebuild block and head all together and go bak to stock pistons


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  #12  
Old 05-23-2014, 04:00 PM
astroboy424 astroboy424 is offline
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Nice, there's a lot you can do with an e30.. I'm dropping an s50 motor in mine.
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E30 325i MODS: bilstein struts, m3 bbs, thrush turbo muffler w/ 2.5 exhaust, ngk v-power.

E36 325i - for sale no motor
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  #13  
Old 05-23-2014, 04:01 PM
estage237 estage237 is offline
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Mein Auto: 1988 e30 325
I wanted to do that can't find swap motor though


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