yz400f cracked head
Posted January 02, 2011 - 09:39 PM
Posted January 02, 2011 - 11:01 PM
Note that to run the 426 head, you will either have to use a 426 carb with internal hot start or drill the boss inthe intake tract and press in a nipple for a vacuum source for the external hot start on the 400.
Posted January 03, 2011 - 09:08 AM
Posted January 03, 2011 - 10:04 PM
Posted January 06, 2011 - 05:20 AM
If the head is cracked on the outside you can likely have it welded by a competent welder, it'll save you much $$$ and time.