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Compatable CRANK for NA8

Posted: Tue Nov 06, 2018 10:07 am
by randyMX5 ImBack
Hi im finding it hard to find a Crank for my NA8 turbo build. The crank in the original engine and every one I have brought since seems to have a crack near the 4th bearing (which I believe is pretty common).

Which of the BP-XX engines have a compatible crank that will fit in the NA without much hassle.

Also can anyone point me in the direction to whom might have one

Thank s in anticipation

Randall

Re: Compatable CRANK for NA8

Posted: Tue Nov 06, 2018 12:09 pm
by 93_Clubman
Randy, madjak's recent thoughts re crank compatibility: http://mx5cartalk.com/forum/viewtopic.p ... k*#p934621

Re: Compatable CRANK for NA8

Posted: Tue Nov 06, 2018 1:43 pm
by 93_Clubman
Solomiata touches on but doesn't really go into enough detail on cranks, although it does on a lot of other stuff: http://fixjunk.com/solomiata/solomiata/MX5Engine.html

Re: Compatable CRANK for NA8

Posted: Tue Nov 06, 2018 4:24 pm
by manga_blue
I've got an NB8B crank in my original NA8 block. No problems, they're identical.

Re: Compatable CRANK for NA8

Posted: Tue Nov 06, 2018 9:18 pm
by project.r.racing
Any BP DOHC engine has the same crank. Mazda Ford Kia