i'm looking to stick some h22a1 pistons in my h23a using the h23a rods and h23a head. is there going to be any valve clearance issues? going to need any serious tunning to run well? what kind of compression ratio will i end up with? i did the compression ratio calculator and it came out to about 12:1 but i dont know if i got all the info correct.

thanks in advance.

 

according to my calculation you'll increase cr by about 1.5 points. so if your at 9:1 now, you'll go to 10.5:1. this is due to the increased compression height of the H22 piston over the H23 piston. i don't think you'll have valve clearance problems. its not that radical of a change but it would be best to clay it before you cranked it just to be sure.