posted July 23, 2005 06:56 PM
i got a set of 993 heads 76cc. i want to cut them down. need to know how much i can cut them before it will mess with the way the intake fitting right.
racer68 Dirt Roller
Total posts: 7
posted July 30, 2005 04:01 PM
You will need to cut the intake to keep a good fit to the heads. When cutting the intake you take half the amount you cut on 1 head and cut both mounting sides of the intake. Example: heads cut 100 thousands intake cut 50 thousands on both sides. You most likely will have to cut the lifter valley side of the intake too. You want about an 1/8 inch gap between intake and block. Just make sure the valves don't hit the pistons when cutting heads.