by Donnie Hurt | Aug 1, 2025 | CYLINDER HEADS
We just modified a Lisle keeper removal tool to help with multi-groove keepers. I had to turn down the top on the lathe so it would fit into a ¾” collet. The hammer method doesn’t work well on 3 and 4-groove applications, and it’s not fun trying to...
by Donnie Hurt | Jul 21, 2025 | CYLINDER HEADS
Over the years we’ve all had to do screw-in stud conversions on small block Chevs. I made up a pilot by milling flats to fit the pushrod slot width and turned two different diameters to fit the two slot lengths they have. I used a 7/16 rod and milled the flat...
by Donnie Hurt | Jun 4, 2025 | CYLINDER HEADS, UNCATEGORIZED
The person who taught me to broach bronze liners used hose clamps, but sometimes they crack. More often it’s when it has had a .502” service guide installed. So instead of hose clamps, I bought some inexpensive split collars for 1/2″. A person could machine them...
by Donnie Hurt | Jan 15, 2025 | CYLINDER HEADS
On race engine cylinder heads that have exotic seat angles, I like to leave myself notes for future reference on freshen ups. I do keep a lot of notes in my folders and build sheets, but I found it handy to scribe the valve seat angles under the cylinder heads (kind...
by Donnie Hurt | Dec 23, 2024 | CYLINDER HEADS
When valve train clearances are going to be tight, I like to double check my measurements and bench calculations by actually testing the components after they’re assembled. I put the valves and springs in this head, then used my quill on the seat & guide...
