Radiator repair

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mathias1
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Radiator repair

Post by mathias1 »

I have a badly leaking radiator, tried already a leakstop but it failed the leak is at the bottom and its behind the casing.
Should i go for an after market one or get it fixed and get it recored at the same time?
I have spare radiator, which has a leak in the core. Might use that one in the meantime.
Both are super radiators, but i noticed a difference in size for the drain tap
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Billy26F5
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Re: Radiator repair

Post by Billy26F5 »

The one with the smaller tap is probably not an original one, I would fix the original one, and see if you can then fix the spare one, but give priority to the one that is clearly original (I think the thread is 1/4" BSP, it's the same size as the thread in the block for that drain tap).
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John b
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Re: Radiator repair

Post by John b »

A leak in the top or bottom tank is easier to repair than the core, if the tubes are old and corroded inside then a re-core will be needed. As Sandy says, i would rather fix an original than use a reproduction one as the originals are far better quality. It may also be worth checking the cooling system pressure with the engine running, I have seen a blown head gasket cause a radiator to leak, the rad was old and corroded and gave up before the cap released the pressure
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shepp
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Re: Radiator repair

Post by shepp »

If it is an original radiator and the top and bottom tanks and the frame are good then definitely go for a recore. I do not know what it might cost where you are but in the UK a top quality job with the correct core to match the original (fin on tube, sandwich fin, 10/11 fins per inch, 8/9 fins per inch etc. etc.) will cost around the £200 plus VAT mark. Quality radiator specialists have machines that can make up the core to correct specification.
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Billy26F5
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Re: Radiator repair

Post by Billy26F5 »

I think it's 5 fins per inch on radiators after 1420356, 10 fins per inch on previous radiators that had shutters for TVO engines, both using fins on tubes. It's possible that there was a wee leak there and someone tried to solder it and melted away the solder holding the two halves of the tank causing a much bigger leak, Super Billy's original radiator is like that, currently awaiting repairs that were dismissed as more expensive than a repro radiator that only got a few hours use before the engine failed. I want to try and fix the radiator, but at the moment we're a bit busy.
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mathias1
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Re: Radiator repair

Post by mathias1 »

there was a crack at the tap, which we got repaired by soldering it.
I fitted a new belt at the same time, cause that one really had done it's job way too long..
on last run it was blowing some coolant on the cil head. I guess I need to look at the cap, I think it's a pressured one.
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Billy26F5
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Re: Radiator repair

Post by Billy26F5 »

Good repair. I might check the torque on the head bolts, I wouldn't loose the pressure cap if possible as it improves cooling.
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