Hi - I recently purchased an ITA Miata. Lower end was old and I spun a bearing and need to build a new one. Just to verify my understanding of ITA rules:
I can go up to .040 over on the bore and remain in ITA.
I can't use pistons that change the CR.
I can't use aftermarket rods.
I can't use an aftermarket crank, change the stroke, etc.
The CR can only be raised a total of .5 - by any means.
Cams and valve timing must be stock.
Correct?
Bookmarks