Blown welsh plug
Posted 11 April 2011 - 07:27 AM
Temps were fine, oil pressure fine. I used permatex no.3 (aviation cement) when installing them.
I was able to repair, test and drive home and the water level has not dropped since topping up. I'd like to get to the bottom of it as I think I was very lucky not to destroy my brand new motor :'(
Anyone else had this before? Are the low temp stat, LD28 water pump, Kameari high pressure cap a bad combo at high revs?
Posted 11 April 2011 - 07:52 AM
Maybe not necessary and not suited to high RPM's?
Why do you have a low temp thermostat?
How high pressure is the rad cap?
Also, maybe you just got an under toleranced welsh plug? How did it go in? any different to the others (easier)?
Posted 11 April 2011 - 08:04 AM
Maybe an underdriven water pump pulley is required? From what I've read bob sharp used the LD pumps but with a restrictor instead of a stat, could the pump/stat be over pressurizing the block at sustained high revs? I shifted at 7,000 in all gears. Would an underdriven water pump cause overheating issues on the street?
Posted 11 April 2011 - 09:43 AM
Posted 11 April 2011 - 09:48 AM
I was in the pits next to your boss yesterday, he had a wicked little Renault.
Posted 11 April 2011 - 09:53 AM
Posted 11 April 2011 - 02:52 PM
What diameter is yours Dimitri and Gareth?
Posted 11 April 2011 - 04:34 PM
Posted 11 April 2011 - 06:38 PM
Welsh plugs can vary in fit and depend on how they are installed as well.
Posted 11 April 2011 - 07:18 PM
Posted 11 April 2011 - 09:27 PM
Posted 11 April 2011 - 09:58 PM
I'll have a look at it if you wanted.
Wasn't there a post about rebonding the balancers?
Could turn up the parts, then send them there.
Posted 11 April 2011 - 10:24 PM
Posted 11 April 2011 - 11:47 PM
Posted 12 April 2011 - 09:34 AM
Posted 12 April 2011 - 09:48 AM
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