Pulley Diameters
I went and saw local rad guy yesterday. He couldn't shed light on pulley sizes and pros vs cons. He looked at my current factory 273 ac rad. He said it has been redone as he could tell by the seam on top tank is perfect. From factory it got one pass for solder and weren't concerned on looks. Mine apparently is " too nice" lol.
His concern was more for coolant mfg.
He showed me an article which explained additives in the coolant. Article was by John Malks and from 2010 so a bit dated. But it states, no OATS. OATS are Organic Acid Technology. OATS will eat silicone amongst other things, and a large amount of our gaskets are comprised of silicone. It has also eaten liners, and solder.
OATS can be in either ethylene or propylene glycol. Same goes for HOAT/NOAT technology. Its service life is 150000/5years.
IAT(Inorganic Additive Technology)is the type of antifreeze we should be using and has a service life of 30000 miles/2 years.
Apparently in North America its known as "conventionally inhibited"
At the time of this article it stated some Peak/Sierra coolant was IAT. All Prestone and ZEREX are OAT technology and not to be used.
I have to do my own research on this to see if these "findings" are current.
I also took my 69 340 2 row rad for a quote. Not cheap...but I trust his judgement/advice. He's been doing it for 50 years and has some real nice old stuff he's working on.
Showed me how he fits 3 rows in it. Top tank has lots of room, bottom needs the mods.
I plan on putting 340(when done) in cuda so wanted a stress free cooling system so 340 rad will go in as well.
This may not help C at all with current issues but might help alleviate future ones for some members.
I can live with 210* if that as hot as it gets, but NOT the case. I agree with you & don't like it at all...
Let us know what your radiator guy says. I'm determined to fix the problem this year once & for all....I HOPE :) (Fingers Crossed)
