FE-size of over drive & under drive pulley's ?

[RICK LAKE]

byron w Byron there was only 1 set. Under drive on all 3 pulleys. Crankshaft,Water pump, and Alt. I never installed the ALT pulley. They are like 5" for both water pump and crankshaft. There is a note about overheating if the car sits for a long time at idle. There is not enough flow of coolant through the motor. SBF guys had the same problems. I also did alot of messing to get the temps where I wanted them. Aluminum radiator, grinding out ports in the intake manifold. More steel pipes to stop and rubber hoses from colapsing. larger thermostat center opening. Aluminum motor runs hotter than iron one over all. Rick L.

[undy]

I had the March set and had the same problem that Rick talked about. The easy fix was to trash March's tiny crank pulley and and to install a single groove OEM 6 3/4" diameter pulley. I'm over-driving the waterpump by around 15% now and don't have anymore cooling issues, thanks to the pulley change and other modifications.

The March set is designed for a more than adequately cooled engine that's looking to shed some parasitic losses, NOT an engine that's next to boiling over at every stoplight.

[FUNFER2]

undy- 6 3/4 on the crank, what is your pump and alt. ?
15% would be great.

[undy]

Originally Posted by FUNFER2

undy- 6 3/4 on the crank, what is your pump and alt. ?
15% would be great.

Pump's an Ebok w/a 6" single groove March Pulley and the alternator is a GM (12-SI) 140 amp made by Powermaster with it's standard chrome/billet pulley.

[wrench87]

does any one know what size pulley comes on the professional products sfi dampner for the fe?, mine is at the machine shop

[undy]

Originally Posted by wrench87

does any one know what size pulley comes on the professional products sfi dampner for the fe?, mine is at the machine shop

It doesn't come with a pulley, you need to provide it. There's too many variables for Professional products to provide a "standard" pulley.. (diameter? 1 groove?, 2 groove?, 3 groove? etc...)