Don Terrill’s Speed-Talk

I read a couple studies where they showed the heat soak from the head to the stem of the valve. The temperature according to them is essentially the same well past the seat angle I thought about the OEM's and seat placement. I would guess longevity is not the only thing they consider Maybe, I do not...

When a seat cutter is set for the size of the valve, the valve will always contact the cylinder head seat profile on the outside edge of the vavle at the valve margin The valves for this application have a common margin thickness somewhere around .070" wide. I did not measure them I always set ...

Yes, margin reference is the outside edge

This is a three angle valve job on a production aluminum head with new seat inserts and stainless valves

Considering heat, wouldn't the seat set at the margin also transfer more heat to the seat insert because of a larger contact area, adding to longevity

He did not want the seat closter to the stem, he wants it in the middle of the seat angle on the valve

The valve angle is something like .150 wide in this application

I did not consider the heat aspect but with that in mind, I am not convinced the seat close to the margin will go away faster

Recently started working for a mostly production shop Setting up for a valve job on a Serdi with a multi angle cutter bit, I set the seat diameter for the valve size so the seat will be at the margin extending toward the stem I always set seats to the diameter of the valve and this is where they com...

7k plus shipping

I have a Turner balancer with bob weights, digital scale, and rod balancing fixture

Used less than ten times

8K plus shipping

John
518-915-3203

Anyone try Dykem with the intake bolted on to trace it from the plenum to the chamber

Its for my friends dyno in NY who does not have an account on Speed Talk. I will see if he has dimensions. He has a Stuska part number but says it will not cross to anything

Stuska part number is S4004

Anyone know a source other than Stuska for a water brake ceramic seal? Stuska is out of stock

The price was real suspect when I heard it. I was curious as to how they were doing.

I do not use flat tappets as of a year or so ago. Just not worth the worry for me.

The last thread on the Comp Cams DLC coated flat tappet lifters was locked due to no real world evidence of them working at the time.

Anyone using them yet? Just curious.

Like Bill C said above, noise comes through the muffler shell.

A good coating of spray on sound deadener after a heat coating should make a big difference with mufflers like I use in my earlier post. It will protect them form the elements also