Hey guys, i have a question about this motor build. i have an 87 Is, and its great, but it needs more power, i have heard alot about this swap, and i thought maybe i could just get an eta block, and throw my 885 head on it, and bolt up everything else, am i wrong? i heard you have to use a 173 ecu anyway, are the blocks pretty much the same? i am looking at a block with the bottom end in it for cheap, and i was just going to double check to see if it will work, thanks.
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m20 2.7i
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m20 2.7i
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technically. yes.
idk about better power and all that. why not just get a chip and better intake/exhaust?-FREEDOM- is cruisin at 80, windows down and listening to the perfect song-thinking "this is it"
-The Beauty in the Tragedy-
MECHANIC SMASH!!- (you all know you do it)
Got Drop?? ;-)
Originally posted by JinormusJBut of course
E30s are know to be notoriously really really really ridiculously good looking
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i have both of those, haha i just want to build a fresh motor to boost. ive also heard a 2.7i conversion could drop compression and is a lot more boost friendly, so ill be excited for that. so far what im thinking is,
- i could just bolt on my 885 head to the 2.7 eta block and bottom end, and it will work fine, and the ecu is plug and play?sigpicInstagram: bir_madhatter
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few sensors, bits and pieces, but yea. if you are going the boost route then heck yea-FREEDOM- is cruisin at 80, windows down and listening to the perfect song-thinking "this is it"
-The Beauty in the Tragedy-
MECHANIC SMASH!!- (you all know you do it)
Got Drop?? ;-)
Originally posted by JinormusJBut of course
E30s are know to be notoriously really really really ridiculously good looking
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are the sensors just little bs sensors? or are they ones that will keep it from running? thanks.sigpicInstagram: bir_madhatter
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sounds good, and i will get it hot tanked, and tested. and replace the piston rings while im there. like i said ill be boosting it, so the top end power shouldnt be a problem.sigpicInstagram: bir_madhatter
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Originally posted by CrJdMc View Postsounds good, and i will get it hot tanked, and tested. and replace the piston rings while im there. like i said ill be boosting it, so the top end power shouldnt be a problem.
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Originally posted by CrJdMc View Postsounds good, and i will get it hot tanked, and tested. and replace the piston rings while im there. like i said ill be boosting it, so the top end power shouldnt be a problem.The car makes it possible, but the driver makes it happen.
Jim Levie, Huntsville, AL
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Ok thanks. And yes I was planning on putting a built 885 head on it, with apr head studs and a metal head gasket. ThankssigpicInstagram: bir_madhatter
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dont do it your compression will be way too low!!!
there are lots of ways around it, do lots of reading there is a tone of info on the forums.
In short:
1. put the 885 valves into a 731 head, port match and bolt it on.... this works well done it a few times.
2. find some seta or alpina pistons.... hard to find
3. find some 325/2.7 aftermarket stroker pistons.... $$ best option if your serious
4. look at all the crank and conrod lengths available and see what matches up.... i think a 2.8 crank with eta conrods and 325 pistons will be closest.
add a mild cam while your at it things really start to wake up then
edit:... crap just noticed you said you want to boost it.... yea go for it should be sweet!sigpic
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