Why is the 89-91 Civic Si such a class killer?
It weighs nothing and has a tiny wheelbase.
Oh, and double-wishbone voodoo magic.

Why is the 89-91 Civic Si such a class killer?
Rumor here is that a protest against Hollis was upheld in STS, and Tim Smith of the ATL region is the STS National Champion!
BS had all cars remove drivers side front wheel on day one while impounded in grid.
I did not see them checking anything on the cars we were just told to pull it.
If they told you to drive off a bridge.....![]()
Rumor here is that a protest against Hollis was upheld in STS
Andy, There is no sense in diffusing a bomb after it has already gone off.
Your cylinder head was modified way beyond what you are telling everyone. In order to even install shims into a d16a6 cylinder head you would need to shave down your spring seats topside or your valve seals will not install properly. This means you definetly had a multi angle valve job probably done on a Serdi machine material removal here is the reason why your installed height is a lil off. Why stop at this why not blend the bottom of the ports a lil bit maybe do some bowl work...And i would also like to add stock honda springs simply do not have the spring pressure to hammer shims down as you say.