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Old 22-05-08, 02:06 PM
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Naumoff Naumoff is offline
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Join Date: Nov 2006
Location: Maryland, USA
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Quote:
Originally Posted by Neil O View Post
Tony,
something I am thinking of doing is to change my crank pulley for a slightly smaller one.
I think the water pump could do with spinning a bit faster at idle, and also it would help the alternator keep up with the cooling fans at idle too.
I haven't found anything suitable in Real Steel's catalogue, do you know of a supplier and any pitfalls in changing?
Neil,
I went with the March billet pulleys. I also went with a larger amp alternator.
There is an article in Car Craft magazine that addressed this issue of keeping your hot rod cool.

You are correct in wanting to increase rpm at the alt. to help with amp out put. The battery is only there to start your car and the alt. is suppose to supply the electricity to run your car. When you put a 60amp alt. on your car that is not the output at idle. And idle is where you need it to run your cooling fans.
The increase velocity is suppose to help with the water spinning through the cores of the radiator and it increases the water surface contact to help dissipate heat.
A large cfm fan with a fan shroud will help a lot as well.
I had traffic light heat creep. It would cool down once on my way. Now I have no problem as I have done all three of these thing.

Large amp. Alt.
2300cfm fan on a custom build shroud.
and a small pulley Kit from March.
I bought the pulleys through Summit.
I would put at least a 100 amp alt. on your car.
The one Bill puts on is the smallest you can get.
I put the 140 amp powermaster on and had to redue the brackets and get a dual pulley kit.

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