Alloy rad for MGB V8

[alolympic]

Hi,

I have a standard MGb V8 in my kit car (NG TC).
It weeps a bit and any help with cooling is preferable, so I am thinking of going for an alloy rad as a replacement.
Prices seem to vary enormously, and the one that looks most reasonable is sold by Brown and Gammons.
I am just wondering if anybody has any experience with it, or if they have a particular reputation?

Many thanks

[v8250]

Can't comment on the B&G rads but can hole heartedly recommend Peter Mulberry's radiators at Mulfab. They're very well respected within racing V8 circles, especially with high output RV8 Morgans. Take a look here

http://www.mulfab.co.uk/our-products/3/aluminium-r...

PS I have their 4" oversized rad that's superbly made and come ready to fit including being supplied with correct mounting holes and stand offs.

[alolympic]

Thanks.
They're not cheap......

[v8250]

alolympic said:

Thanks.
They're not cheap......

And with good reason too...they're designed and made correctly. You'll notice the extra depth that still sits above the lower part of cross member and they come with full top and bottom headers. All this adds up to greater coolant volume and considerably greater cooling capacity.

[xyyman]

I have had one in my 'C' for a couple of years now and very pleased with it. It may seem expensive but don't risk a cheap Chinese version you may get lucky or you may not. I've had a poor experience with them, but you live and learn.

[bitsilly]

This has been gone over at various times, but before you buy, perhaps think about what I have picked up.... and ignore it if you want.....

Alloy rads often do not conduct heat as well as brass cores (brass 22.3 w/cmK, alloy varies 1 to 10 w/cmk).
Alloy needs a greater area of contact with the air to perform.
The only reason to go alloy is a very minor weight saving but remember they have to be bigger.
Once they are filled with the extra water required to fill the extra volume they lose that advantage.
Corrosion, in either, is not really an issue these days with the additives available.

I had a high output V8 from John Eales with traditional rad.
He advised a better fan and better ducting of the air.

I followed that advice with a current Chevy V8 and have never had a problem (but I did opt for an extra core).

I am not trying to swing you either way, as all that said, race cars always seem to have alloy rads, but I do wonder!

[bitsilly]

PS There are many good firms that will re-core you existing radiator, they can often improve on old ones and add an extra core at the same time.

[Bernard1973]

3" longer radiator on an mg b gt v8