Post by
Kitswa »
https://forums.nicoclub.com/kitswa-u90306.html
Sat May 10, 2008 10:56 am
Make sure you get the original cam towers and bolts, and make SURE they are in the EXACT same positions as stock.
The cam holes are line bored AFTER the cam towers are installed, so if you mix them up, you will score and eventually (1 week - 1 year) break a cam.
You really have to trust the guy you get a head from kept all the little parts in exact order.
On other engines you can buy oversized inserts for the cam towers (after machining head & towers to accept them) but no such products exist for SR20 that I can find.
- Bill