Don Terrill’s Speed-Talk

Hey All I am trying to get a vacuum advance for the distributor on a 70 F100 powered by a 302. Trying to keep the appearance somewhat stock, I am looking for a vacuum advance that will pull the plate over a total of 30 deg. I am wondering if the part numbers on these vacuum units translate to the am...

https://images.craigslist.org/00R0R_3l4A6Y6f5SGz_0t20CI_600x450.jpg Needs a restoration! All the bits move, but it needs love. The ways cleaned up and there is no pitting I can see Here is the wording from my local craigs ad: This is a vintage Link Engineering PB-3 Spring tester. It is large - over...

I use valve sizes based on bore size and set the CSA specific to my target peak HP/RPM spot. I’ve never heard of average csa. It’s pretty exact. Depending on what the engine is supposed to do I shoot for 600-640fps limiting port velocity. Check out Wallace racing calculators. Of the engines I build ...

It seems to me keeping this location cool woild be benificial overall

I can see the BSA being difficult

With the Triumphs i think I can make the pushrod tube longer forcing the oil to have to fill the rocker first

Here are pics of the stock Triumph goodies

1970

I would also be applying this to a 78 T140 and a 70 BSA A65

Thanks for these tips

I am also wondering if there is any adverse effects in doing this in a touring format or if it is best left for racing

I vaguely remember reading a thread on this here
I’m working on a Triumph motorcycle engine and was hoping to refresh my memory on the logistics of this idea.

My searching came up with nothing. Anyone know where the inf is?

Have you done this?