Sorry if this is the stupidest question you've ever heard, but will an HF exhaust manifold fit onto a 1990 Si?

 

Its still a D series motor...so yes.
I smell a TURBO project coming on

 

may i ask why?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by project_142 &raquo;</TD></TR><TR><TD CLASS="quote">may i ask why?</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by audioroach &raquo;</TD></TR><TR><TD CLASS="quote">
I smell a TURBO project coming on </TD></TR></TABLE>

 

speaking of the HF manifold what exhaust gasket would you get or all of them the same?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by katb16vo &raquo;</TD></TR><TR><TD CLASS="quote">speaking of the HF manifold what exhaust gasket would you get or all of them the same? </TD></TR></TABLE>

pretty sure they were all the same bolt pattern on the D-series manifolds

 

Yup, its a turbo project. Thanks.

 

Ok, anyone know if it will fit a ZC head?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tegunderpressure &raquo;</TD></TR><TR><TD CLASS="quote">Ok, anyone know if it will fit a ZC head?</TD></TR></TABLE>

will fit the SOHC ZC not the DOHC

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by USDM 4G VTEC &raquo;</TD></TR><TR><TD CLASS="quote">

will fit the SOHC ZC not the DOHC</TD></TR></TABLE>

It will fit a DOHC ZC head, you just have to port match the exhaust ports some on the manifold.

 

As in alittle dremel action? So its not that big of a deal?

 

Ohh, and it is a DOHC ZC.