Hey guys, I want to build myself a stroker from my 1990 e30 325i m20 engine that I have pulled out and in the process of rebuilding. I have been reading alot about the stroker and I think I have just totally confused myself with all the different information. I know that I need a crank from a '88 528e and I read that the connecting rods need to be 133mm in length in order to fit. My question is can I use the pistons from the m20 and still get the desired results? :?
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Re: m20 stroker confusion....
Originally posted by vance325iHey guys, I want to build myself a stroker from my 1990 e30 325i m20 engine that I have pulled out and in the process of rebuilding. I have been reading alot about the stroker and I think I have just totally confused myself with all the different information. I know that I need a crank from a '88 528e and I read that the connecting rods need to be 133mm in length in order to fit. My question is can I use the pistons from the m20 and still get the desired results? :?
Also, you can use the crank from any eta motor, not just the 88 528e. I'm also pretty sure you can use the crank from a 524td, which is much stronger than an eta crank.
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Re: m20 stroker confusion....
Originally posted by nandoOriginally posted by Eurospeed88I'm also pretty sure you can use the crank from a 524td, which is much stronger than an eta crank.
He also mentioned running a different length connectng rod to change the piston height. It would probably be easier to have custom pistons made instead of using different rods. That way you can be sure you have what you need, and also gain some extra compression if desired.Old and improved:
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Re: m20 stroker confusion....
Originally posted by nandoOriginally posted by Eurospeed88I'm also pretty sure you can use the crank from a 524td, which is much stronger than an eta crank.
In the case of a NA stroker M20, an Eta crank is just as effective as a forged unit. Nowhere near the stress though...so there isn't as great of a need for forged everything as far as internal parts are concerned.
JonRides...
1991 325i - sold :(
2004 2WD Frontier King Cab
RIP #17 Jules Bianchi
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Re: m20 stroker confusion....
Originally posted by vance325iHey guys, I want to build myself a stroker from my 1990 e30 325i m20 engine that I have pulled out and in the process of rebuilding. I have been reading alot about the stroker and I think I have just totally confused myself with all the different information. I know that I need a crank from a '88 528e and I read that the connecting rods need to be 133mm in length in order to fit. My question is can I use the pistons from the m20 and still get the desired results? :?
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Originally posted by vance325iThanks for all the input. I'm just trying to get a decent running 2.7. If I get the super eta block what am I going to have to do to make the head compatible?past:
1989 325is (learner shitbox)
1986 325e (turbo dorito)
1991 318ic (5-lug ITB)
1985 323i baur
current:
1995 M3 (suspension, 17x9/255-40, borla)
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Re: m20 stroker confusion....
Originally posted by Jon325iIn the case of a NA stroker M20, an Eta crank is just as effective as a forged unit. Nowhere near the stress though...so there isn't as great of a need for forged everything as far as internal parts are concerned.
Jon
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i just realized something, but can;t remember sometihng else (heh)
u can use an 88 eta crank... 88 eta pistons, and eta block (right?)... what about 88 eta rods? if this is case.. can;t u simply... buy an 88 eta engine, and swap heads.. (cheap easy, not dependable i know, but can you) OR do you have to use the "i" rods...
i really REALLY want to do a stroker, but b/c of work/school.. no time,, it sucks.. so easiest fastest way is best for me lol</img>
Schnitzel Not Rice....
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Originally posted by Switchi just realized something, but can;t remember sometihng else (heh)
u can use an 88 eta crank... 88 eta pistons, and eta block (right?)... what about 88 eta rods? if this is case.. can;t u simply... buy an 88 eta engine, and swap heads.. (cheap easy, not dependable i know, but can you) OR do you have to use the "i" rods...
i really REALLY want to do a stroker, but b/c of work/school.. no time,, it sucks.. so easiest fastest way is best for me lol- Sean Hayes
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Originally posted by JordanIt ends up being like 8.1:1 cr. Weaksauce.past:
1989 325is (learner shitbox)
1986 325e (turbo dorito)
1991 318ic (5-lug ITB)
1985 323i baur
current:
1995 M3 (suspension, 17x9/255-40, borla)
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Originally posted by JordanOriginally posted by SeanYes, if you have a Super Eta engine, you can swap the entire I Top end, and have yourself a stroker.
It ends up being like 8.1:1 cr. Weaksauce.
Originally posted by dkOriginally posted by JordanIt ends up being like 8.1:1 cr. Weaksauce.- Sean Hayes
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