need quick advise CA20 crank+flywheel switch

[tyrannix]

i am starting another CA build on my extra engine soon

i may still be able to get a nismo full counterweighted crank, theres 2 i can get, a 6 bolt pattern, or the 8 bolt pattern, identical otherwise...

the 2 quick questions, the 6 bolt pattern, with new bolts, and threadlocker should hold up as well as an 8 bolt? anyone have experience?

and will a CA18det clutch/pres plate bolt without mods to a CA20 flywheel? (im assuming yes, but need to confirm before i go this route)

-CJ

[themadscientist]

CA18= 8-boltCA20= 6-bolt

[tyrannix]

yeah, beside the point tho

its a choice between an 8 bolt nismo full counterweighted crank, or an identical 6 bolt one

the 6 bolt is half the price, but i need to get a 6 bolt pattern light flywheel for it (mines already installed and its 8)

but even with the extra cash for the ca20 flywheel, its still less $$ than the 8 bolt crank.. and ive been assured that they are identical otherwise (with a micrometer)

im pretty sure i can get the clutch issue worked out, i just really need to know if anyones used a 6 bolt pattern crank before with high output ( >400ft-lbs )

will the 6 bolt handle the load? (with all new uber-grade bolts and threadlocker)

or is there an inherent weakness with the 6 bolt pattern vs the 8 (besides having less bolts)

hey, if not, ill bit it and just go ahead and do the 6 bolt then it will be done and documented for everyone to know

ill just probably never be able to run a multi plate clutch (which it might actually need at that point) .... oh well

looking mainly to Dee for this question, but if anyone else has experience please chime in

[silvia_ca18det]

are u stroking out ur ca18? and about ur clutch question OS Gikken makes a ca20 twin plate clutch assembly! or tomei makes a lightend flywheel aswell for the ca20 6 bolt! everything swaps over from ca18 to ca20 flywheel (clutch pressur plate) its just the bolt pattern....and about it taking power i dont see why it wouldnt hold up to high output, if tomei still used the 6 bolt pattern for their ca20 stroker kit then i think it is fine!

[sideways danny]

CA18= 8-boltCA20= 6-bolt

CA18DET=8 boltCA18ET=6 bolt

the 6 bolt one is from the s12 silvia

[themadscientist]

that doesn't change the fact that the CA20 one is six-bolt