Originally Posted by spoolinsuby
Can these cams be used with USDM STi valvetrain with a 7500RPM limit?
I know how to check valvelash but what do you mean by checking the journals?
Unfortunately these cams are not compatible with the USDM STI heads unless you disable the pickup sensor on the heads & AVCS. You will have to change out the cam gear also. As for the journals, sometimes our customers are failing to check for proper journal clearance, overtightening the journals, no oiling etc. This causes the cams not to rotate properly or scores the cams.