I used to have an Hf, so my friend keeps asking me questions about an 89 she's looking at getting. Blown head, bad clutch. So, I was wondering, (can't remember from my old rex days) will a dx head fit an hf block, bolt up, just use the hf intake manifold? Sencond, I have a clutch for an 89 Si sitting in my garage with about 8K on it. Told her it's her's if it would work... Will it? Thanks! I knew I'd get help from CRX guys/gals. You were always good to me when I had mine... RIP.

 

1. for the dx head and the hf intake manifold (you'll also need the throttle body, etc.) i'm not sure...but i'm sure someone here may know...the hf has a small intake manifold and tb probably more restrictive than even the dx manifold/tb combo you could get...i'd consider getting an si unit for better measure...you'll also have to convert over to mpfi if the crx isn't already

2. the clutch for the 89 si may not fit depending on what year crx you are trying to put it in...if its an 89 then yes you can use that clutch...this chart helps...the 90-91 clutch/flywheel were beefier allowing more power

 

Thanks for the help!