Any-one know anything about them, or whether they are worth it etc?
Also any-one know if it can be got easily from a motorfactor?
I could go round and ask but i dont have time today.....
Basically i am asking because i have had a repeat coolant explosion but we are still not sure of the cause.
When driving the car normally, quick blast of throttle up to motorway outside lane speeds she is fine, holds her collant and gernally is a nice place to be...
however if i use full throttle from 3500rpm in 4th up to 4500 in 5th she overheats after about 1minute...
the way the car is clamped together is using ARP headstuds - these have a low deflection rate they can't be stretching, but the head itself may be warping slightly under this load and breaching the HG....
It could also possibly be the localised heat resulting from full throttle is overhwelming the coolant system that was never designed to cope with the sorts of heat being generated now...
It could be the back pressure of the turbo on the exhuast side combined with the high boost (25PSI) in the intake side pushing the pressures up and lifting the head...
So many unknowns and i think the only way to find out where we stand is to have the head taken off again and looking to see what is what.
If there has been no compromise, we know it is coolant system in general and there is something we can do about it.... if it has lifted the head, then the only option is to reduce the tune of the car. Most likely via boost and fuelling.
Grr
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