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Author: Subject: Putting radweld in a high performance engine
aerosam

posted on 15/3/09 at 04:53 PM Reply With Quote
Putting radweld in a high performance engine

Hi guys, my 540i (M60 V8 engine) has a leak on the radiator. Looks small enough to be dealt with by good old radweld, but is it really wise to be putting radweld in a big powerful engine like this?

Goodness only knows what a new radiator is going to cost.





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blakep82

posted on 15/3/09 at 04:55 PM Reply With Quote
if you need another radiator, try www.partsgateway.co.uk
always found the breakers on there really good

don't think radweld will be a permanant fix. will do for a bit though i guess.
i think Mr Whippy used egg whites in his JCB with good success. held for years if i remember rightly





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mookaloid

posted on 15/3/09 at 04:55 PM Reply With Quote
I think K-seal is the stuff to use.





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Guinness

posted on 15/3/09 at 05:53 PM Reply With Quote
I had a leak on my 540i. Tried K-Seal, but the leak was from the nose of the water pump!

Then the expansion tank in the side of the radiator disintgrated, completely.

Will the 540 rad fit in a locost chassis?

Cheers

Mike






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Phil.J

posted on 15/3/09 at 05:57 PM Reply With Quote
With high performance cars there is only one way to fix them, the right way! Fit a new rad. or whatever before it becomes really expensive.
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britishtrident

posted on 15/3/09 at 06:29 PM Reply With Quote
K-Seal is100% safe --- and it works

Don't put Radweld near it, it isn't good for engines and radiators with fine coolant passages and it causes thermostats to stick (fortunately usually full open ). Radweld was OK in the days of Morris Oxfords and sidevalve Hillman Minxes but its day has gone.

Even worse than Radweld is Barrs Leaks --- OK if you are an Ice Road Trucker but not in a modern car engine.





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mark chandler

posted on 15/3/09 at 06:37 PM Reply With Quote
Anything that you bung in and goes milky is based upon soluble oil.

It will coat everything with a film of oil, reducing the engines capability to shed heat to thye coolant.

Also modern cars have smaller passages in the rads so wave goodbye to the heater... which I guess will be an absolute swine to replace.

I am afraid your only real option is new rad up front.

Regards Mark

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Peteff

posted on 15/3/09 at 08:25 PM Reply With Quote
It will gum the heater matrix up even quicker than it fixes the leak as said before. There was a shop near us that repaired radiators and it was a lot cheaper than buying a new one, look if there is anything similar near you.





yours, Pete

I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.

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