Why we no longer work with used Type 4 Cylinderheads.
Author: Hoffman
Can't walk and chew gum at the same time, but never chews gum so it's not an issue.
The Hot Head Pressure Testing Myth
A brief debunking of a common misconception about water cooled cylinder head cracks.
Porsche 987/997 Valve Seat Issues
This problem of intake valve seats dropping has struck quite a few owners over the past few years. We first became aware of it with
Like a Kid at Christmas
Blueprint Specials. For the VW Bus owner who has everything… but a great set of heads!
356/912 Porsche Cylinderheads
Remanufacture of 356/912 Porsche cylinderheads is covered in this article.
AAPistons Chinese 2.0 914/4 Knockoffs
These heads produced by AAPistons are knockoffs of the 039 101 371A heads that came on pre-smog 2.0 914/4’s. They are often referred to as
