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MG MGB GT V8 Factory Originals Technical - Motor-driven fan, high capacity ... which one?

I am finishing up a conversion using a 3.9 Rover. I have room for an engine-driven fan. What's the best one to use? I believe there is a very high capacity yellow plastic one out there ... anyone know where to get one?
Bill

A Brirish company - RPI - check their web page - sells Pacet fans which they reckon are the tops. I have no experience of them myself and would be interested to know if anyone has tried them I am certainly looking around for better fans than the standard ones I have fitted to my car at present. - RPI -00 44 1603 891209. Ask to speak with Chris.
Marc

Bill,

I am running an engine driven fan that came from Glen Towery. It works, no overheating (yet). I have been told that it is a TR6 fan. Not sure about the aluminum center section.

Take a peek:
http://www.britcars.net/cfloyd.html
Carl

I have a viscous fan off my rebuilt Rover 3.5L I got from RPi (I sort of rep them here for MG V8s). If someone wants it my rates are more than reasonable.
Barrie Robinson

Don't go the engine driven route, saps power and costs a fortune to add it back in. Demon Tweeks offer a great range of electric fans, from memory the 14" by 7 blade should more than suffice, though with a 3.9 you may need to mod the radiator. See how it runs in traffic first. Whether you use standard exhaust manifolds or exit them through the wings (RV8 style - runs cooler) will also have a bearing.
David

David, I'd follow your suggestion except that there isn't sufficient clearance for an electric fan -- the nose of the water pump is only about 1" or maybe 1.5" aft of the backside of the radiator. Just not gonna fit. I do have the two stock plastic fans on the front of the rad, but those alone are woefully insufficient. I was going to put in a SS flex fan, but I have been told that a plastic fan, while perhaps noisier, is going to stay put and not hit other stuff nearby.

(Also I was told what may be an old wives' tale, which is that if you have electric pushers on the front, you can't use an electric puller on the rear; rather you _must_ use engine-driven. Is this right?)
Bill

I have a 3500 rover in a 74.5 G.T. that has a TR-7 13 blade fan on the water pump with an alu hub that will turn the stock elect. fans after 2500 r.p.m. & I have an A.C. cond. in front of the radiator I have had her in 106 deg. for 6 hrs. with a 3,000lbs. trailer behind the M.G. & she NEVER left the N on the temp. gauge. & my 4.2 with F/I is set up the same way & she has a trailer hitch also. My 4.9 with 10.5 - 1 comp , ported, Very hot cam, R headers & a T-56 6 speed, I watch her in stop & go trafic for she dose run warmer than the other cars with a stock V-8 radiator. I have the duct from the lower vallance to the radiator & I plug all the holes & gaps in the rad. support plates ( you need all air to GO THROUGH the RADIATOR) I do not like to put all my COOLING in elect. fans & motors! If my water pump fan is not warking, the red lite on the dash is on that tells you that the fan belt has broken! I have used the flexolite stainless steel fan in the early V-8 days, but I found better. In 18 years & 600,000 miles on 5 of my M.G.V-8 I have never over heated one of them (even with the trailer)
Glenn Towery

This thread was discussed between 06/06/2001 and 24/06/2001

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