Hoffman

The Hot Head Pressure Testing Myth

A brief debunking of a common misconception about water cooled cylinder head cracks.

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

Blueprint Specials. For the VW Bus owner who has everything… but a great set of heads!

Remanufacture of 356/912 Porsche cylinderheads is covered in this article.

As of 6-30-20 we have five pairs of these bare castings in-stock and ready for finish work with our high quality components and craftsmanship. When

In 2007 we stopped servicing used VW T4 bus heads. By that time around half of the castings we saw had severe cracks down in

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