I picked up a CRX recently with a set of ebay coilovers. Those are going in the trash and being replaced by a Koni/Ground Control adjustable coilover setup.

But I need to know the stock ride height of a 1990 CRX Si so I have some sort of starting point for adjusting the coilovers. It's obviously been too low in the past as the underside is pretty scraped up.

Thanks in advance for any help here.

 

Just adjust them to whatever height you need on the car. Yeah it sucks be even know the stock ride height isn't really going to help much. Just put the GC's on and adjust them on the car.

 

i have to look at mine, but its a civic 3G,

 

well everyone will tell you to measure from the ground to jack points for precise measurements, and for those I am unsure of.
However, I measured from the ground to top of fender and front should be 25.3", rear should be 25.8", is what I found searching a couple weeks ago.