Hoffman

M97 Failures Sparkplug Removal warning

When these engines go kablooey and you know it’s going to have to come down, do yourself a favor and resist the urge to pull

How to easily package heads for safe transport. Please read before shipping.

We do a lot of these heads for our buddy and next door neighbor Nathan Mende of Boxerworks. We really dig these old engines. As

Why we no longer work with used Type 4 Cylinderheads.

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

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