Cobra gear U.S.A. style

[Neil O]

Originally Posted by FatBoy

Changing your crank pulley for a smaller one will slow down your water pump and alternator, not speed them up.
You either need a larger crank pulley, or smaller water pump and alternator pulleys.

Paul

Doh! Of course, you're right Paul, thanks.

I have a big cfm Kenlowe puller fan, with two speeds. When on "boost" it is pulling the battery down, but not if I just raise the revs a bit. Having said that, it is only on boost when the front fans are already running. So I think a bigger crank pulley will do both jobs. I'll have a hunt around for one.

[Naumoff]

Originally Posted by FatBoy

Changing your crank pulley for a smaller one will slow down your water pump and alternator, not speed them up.
You either need a larger crank pulley, or smaller water pump and alternator pulleys.

Paul

It also will lessing the horsepower it takes to rotate the water pump an alt.
Normally with an FE the water pump pulley is a little larger.
To speed up the water pump they reduce the size of the water pump to a 1:1 ratio.

But with a smaller crank pulley and water pump pulley it also speeds everything up a little.
If you look at the pulleys in my picture the crank pulley and the water pump pulley are the same size but both are smaller than the stock pulleys.

[Naumoff]

Neil,
Just looked in your gallery at a pic of your engine.
Looks like the 5.5" with the 6.75" water pump pulley.
That is the performance ratio.
The High flow has a 6" water pump pulley.

You should be able to find the stock crank pulley which will be about the same size as the balancer.

I will keep an eye out for one.
Just a thought!
The only thing is you need to check the bolt pattern. I am sure March uses the same pattern as a chevy. So it might be easier to find one.

[Neil O]

The crank is a Scat one, which I believe also fits Chevys (shock, horror) so I need a Chevy pulley, not Ford FE?

[Naumoff]

Originally Posted by Neil O

The crank is a Scat one, which I believe also fits Chevys (shock, horror) so I need a Chevy pulley, not Ford FE?

Yes, I have a scat crank as well but Bill uses March pulleys and a March? balancer which have a chevy bolt pattern.
Either way you just need the bolted on pulley. The balancer stays.

[KevinW]

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[Neil O]

Kevin, in answer to your question,

'''''////,,,, and ##~~

[Naumoff]

Kevin,
The post and the link came in my email. Very interesting.

A Gimp in the USA is someone who is gimpy.

gimpy;

A nickname for someone who is retarded or handicapped.

He broke his leg, now he is all gimpy

[KevinW]

OK, I put up a link to a gimp t -shirt, and a slightly dodgier link. then decided I was being an arse so pulled it!

[Naumoff]

Originally Posted by KevinW

OK, I put up a link to a gimp t -shirt, and a slightly dodgier link. then decided I was being an arse so pulled it!

Is that your story? OK