Hi all,
At my wits end so seeing if anyone on here can point out my obvious mistake.
Replacing my track car head with a better flowing one, valve springs etc. Immediate head gasket failure on assembly and start up.
Gasket squish doesn't appear good enough/non existent.
Have taken Original head on and off before without issue for cam replacement
What I know:
- New head lightly skimmed and crack tested without issue
- Block appears flat with straight edge.
- Compression test 175-180 prior to this
- Head bolt holes clear of fluid/debris
- Big 44mm valve oval head gasket used as my car is a 74.
- Lower size water pump o-rings used and pump loosened to help lower it.
- Torque specs and procedure followed
Keen for any advice. Must be something fundamental I'm completely missing? I'll concede my knowledge isn't huge but it's not the first time I've put someone like this together either.
Thanks!