Don Terrill’s Speed-Talk

I was very saddened to learn of Don's passing. My best wishes to the family. This site is like a part of my being. The members here are like family to me.

I want to become a contributing member financially.

Terry

AKA zeek

What is wrong with .002" main clearance in a 911?

zeek

If you post this question on the SHOP TECH forum you will get your question answered fast. My response would be: NO and NO.

zeek

"2618" AKA "Mahle Metal". If a piston is designed correctly, it will not need a bunch of skirt clearance. Think: Why does (just for instance) Porsche use 2618 alloy pistons in street engines. Cheap? Noisey? NO! They are super durable (more costly up front compared to other alloys...

It will get wider all by itself... This would be true but with a caveat or two. Seat material is one caveat. For endurance turbo race engines we use a seat material that is not only wear resistant, but a very effective heat transfer piece. Expensive alloy, yes. At very high hours there is virtually...

Reef- PM sent

I don't know if you are interested in a Berco RSC 950, I have 2 and am considering selling 1. Thank you for the reply. We do high end aluminum heads and need a machine with spindle and feed control (VFD for PCD cutter) and a small foot print. This is why the Comec RP 850 is appealing. The new price...

Looking for used Comec RP 850 surfacing machine.

zeek

Why is the time honored way of doing in by hand with a speed reducer not being considered? Seems to me that solves the problem We can do this and have for decades. The deal is this customer is very specific in everything that gets done on their "Program". I have done their heads and other...

Zeek The number on the Serdi collet chuck is 200397 It takes Erickson 180 DA collets and they go up to 3/4" The number on the Serdi Morse taper adapter is 404115 It is a #2 MT In case you didn't know, the Serdi is ISO 30 taper. The tangs are different, but if you find a floating reamer holder ...

Like Xnke said, use a floating reamer holder. I am sure I have a collet chuck that I bought from Serdi. I think I have a morse taper adapter from them too. My solution would be to find a floating reamer holder that fits the largest collet the Serdi holder will take, or a MT shank floating reamer ho...

Thank you for the reply's gents. I am possibly not making myself 100% clear as to the issue. Some of the comments are very helpful. Let me try again. Please excuse my vagueness. The Serdi will find the axis of the guide bore quite nicely if the guide bore is a true cylinder . That means a carbide pl...

I was unable to find this topic with the search function. Specifically we have a new customer who wants us to do all their race heads. These are multi-valve aluminum heads with 6mm stem size. Typically we hone guides to finish size and have since the early eighties (Sunnen equipment). The customer s...