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When I worked with a Sioux valve/head rebuild machine, I found this brush type to be the most effective for carbon removal: Carbon Removal End Brush 1 1/8" It polished up the chambers real nice, but too aggressive for pistons tops.

My 1975 Stant Catalog and the 65 S.M. show a 14 lb. cap with a 180* t'stat. If it's holding at or below 190* on hot days or heavy driving as you put it, you are in fine shape. For the really hot ones, or pulling a grade, you'll need the spec'd cap.

Me? Are you talking to me? :) No, it came from two sources; Fritz my Auto Shop instructor some 40 years ago, and employment at a foundry in Pa soon after.

Those are core plugs, not freeze plugs, frost plugs or some kind of block protection scheme. Very rarely, IF at all did they actually prevent block damage from freezing. When the block mold is poured, you need an access point to get the core casting sand out. Picks, rapping, vibrators all were...

The rubber plugs are temporary fixes until real metal ones are installed. From the paint on them, it appears as a fix it and sell it.

reenactment of Duel?

Works pretty good with soap bubbles. If you want to find small leaks, put a couple of ounces of refrigerant in with the N2 for a trace gas, I like R22 for example. An electronic sniffer can really vet out the leaks then. Using barrier hose on your gauge set will cut down false leads...

This could be po-tay-toes vs po-tah-toes; but with sweep charging you are using refrigerant to sweep out or push out air & non-condensables from the hi-side to the lo-side and suction service port. The amount of time to accomplish this and assure no non-condensables is a judgement call and then...

Pressure, however slight, always moves high to low. A vacuum pump creates a low pressure "area" that any gas, or air, in the system will move towards that low pressure. Initially when there's 0 psi, or 14.7 psia, pounds per square inch absolute, the pumping rate or withdrawl of air is high. As...

All good points, let's put it together. I've run cooling systems for pay and know a bit about glycol. Most of the negative is correct, purer glycol than a mix or solution does NOT conduct heat or transfer heat as well as pure water. In fact some system performance is deducted the stronger the...

I work with this stuff. You would be much better off with someone who can show you or do it for a price. Other wise you seriously risk ruining some vintage/heritage equipment.

Most of the over heating at idle problems I've seen or heard about were related to flow issues; either water or air. If this car is stock, it didn't come broke from the factory and that's with no shroud. Try washing the radiator exterior real good. Spray it down with Simple Green or good...

You are right cudaboy. The cup side(concave) of a prop fan faces air flow or direction. Any fan can move air running in reverse direction, but it works better going the right direction.