[Fot] milling TR4 head for pop-ups

[Bob Kramer]

This is what I got. Dennis Shea was a Xerox (or was it Kodak) engineer.
You're setup looks like it has a little more thought behind it. I left the
carbon pattern on the piston to show the pattern.
Bob Kramer


On Sat, Jan 11, 2025 at 1:23 PM <toodamnfunky at comcast.net> wrote:

> Yep, I did exactly that plus deshrouded the valves. I took off just enough
> to remove the shrouds at the valves and went with Wiseco pop ups made to
> order through BF&E. Also welded in and reshaped the exhaust valve pockets
> and part of the ports. It spent a lot of time on the flow bench.
>
> The head I built before this one eventually cracked due to being milled to
> thin so I went the other way to get compression.
>
> jg
>
>
>
> *From:* Fot <fot-bounces at autox.team.net> *On Behalf Of *Bob Kramer via Fot
> *Sent:* Saturday, January 11, 2025 8:33 AM
> *To:* Fot <fot at autox.team.net>
> *Subject:* [Fot] milling TR4 head for pop-ups
>
>
>
> I am finally rebuilding the engine I got with the #67 TR4 many years ago.
> The car came to me with dual SK sidedrafts (Weber rip-offs) and the head
> had some interesting stuff done to it.The intake area on the head was
> carved out to raise the angle of the SK's and the combustion chambers were
> recessed with a flat mill to fit pop up pistons to gain compression without
> much head milling. I know others run pop-up pistons. Has anyone else done
> this?
>
>
>
> Bob Kramer
>
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