well im looking into a DOHC ZC for my 89 crx si only thing stopping me is the lack of aftermarket suppliers. Ive read that you can either port the si exhaust manifold or buy a header. Problem is in one place they said to use 88-91 crx aftermarket headers another says 89 integra. one more question, when buying a set of underdrive pulleys for the DOHC ZC would the set designed for the 89 Integra work? if not anyone know what would? thanks for the help

 

If i wanted to run a lightweight flywheel for the street say anywhere from 10 to 12 pound would a non high performance clutch with a street disc be ok? or do i have to run something along the lines of a centerforce dual friction or A.C.T.?

 

I run a lightened Toda flywheel with an ACT street disc and a STAR pressure plate.. Works great.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LorenGeist &raquo;</TD></TR><TR><TD CLASS="quote">If i wanted to run a lightweight flywheel for the street say anywhere from 10 to 12 pound would a non high performance clutch with a street disc be ok? or do i have to run something along the lines of a centerforce dual friction or A.C.T.?</TD></TR></TABLE>

 

bump any other opinions or answers?

 

what ive heard is that both of the headers work but the integra ones hang low. so the CRX ones are better. what ive heard. and as for the underdrive pullys, dont get any. the stock one is balanced perfectly and putting on an aftermarket one fuckes with the balance. lsvtec answered the lightened flywheel question already.

 

i'd stay away from the underdrive pulleys. to many horror stories with D series engines. I dunno if a zc is considered D series but it messes with the harmonic balancing of the crank. U should get some ITB's for the zc i havent seen that done yet.

 

well thanks for the help! im glad i found this out before messing up my motor. One last question, i know an intake tube is an intake tube but what model would best fit the ZC? The 88-89 integra? Or a D-series

 

I think there pretty much all compatible Get a 88-91 crx Si intake to be sure

 

i have a UD pulley on mine and had no problems at all, revs alittle quicker also
check my bio, mods there

 

your bio says you have a sohc zc are the pulleys the same as the DOHC? if so what model did you use them from

 

what pulleys did you want? The harmonic balancer is the one that you want to stay away from. I ran an 88-91 Si AEM alternator pulley for several years w/ zero problems. It gave better throttle response. Go for the 88-91 Si intake, and header. You will need to take a dremel to the header ports, but it is very easy to do, you do this so that the exhaust gases can flow out correctly; it's just a quick gasket match port job. HTH

 

ok so with the header i have to port it a bit can i use the integra gasket or do i have to trim the si one?

 

I used my Si. It works fine. For parts I think theres everything out there for a Zc.
http://www.theoldone.com has pistons (and so do others)
Webb I think makes camshafts. (and so do others)
Any D-Series bolt on should work.

those 2 manufacters are the only ones I can think of now...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LorenGeist &raquo;</TD></TR><TR><TD CLASS="quote">ok so with the header i have to port it a bit can i use the integra gasket or do i have to trim the si one?</TD></TR></TABLE>

You use the Teg exhaust manifold gasket, and place it on the header ports. You'll see where there are a few mm where the exhaust would essentially hit a "wall", so you mark the areas w/ a permenant marker, and take a dremel & round out, and smooth those parts so that the gases can flow smoothly. You don't necessarily have to do this, but why do things half assed when it's a pretty easy task?