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MG MGF Technical - Thermostat drilling: Any good?

When I had my 1.8 MPI HGF fixed, three months ago, got the LR gasket among many other new parts. The thermostat got a 3mm hole on it ,as recommended by the people at the Porsche garage which made the fixing - apparently a standard issue for the Boxsters, and I could not get the PRT around here-.

So far I have not noticed any difference at all and the F drives smoothly as always. What is the actual knowledge about thermo drilling? Any good on preventing HGF as I would like to believe?

Mike
JM Vega-P.

You might notice that it takes longer to come up to normal operating temperature, although maybe not much in a warm climate. I must admit I was tempted to try it a couple of years ago but the consensus of opinion seems to have moved against it as THE answer, and more towards LR multishim gasket and PRT. Lets see what the chinese decide to do, if we can wait that long!
C.R.B. Simeon

See http://www.mgfmavhh.ukf.net/ I am convinced that it can't do any harm, and if the Porsche Boxter has it. I am convinced that it is worthwhile.

I will be fitting one next time I am working on the MGF.

Marcus

Sorry for being late but I have just red this thread and found interesting to contribute.
Five years ago had HGF on my F. When fixed the thermostat was drilled with a 4mm hole on hour 12. The replacement gasket was the standard one however and after 60,000 km since then, and often speeding the car from cold, nothing wrong has happened. May be the drilling or just good luck?
JanHeyn Bergmeijer

If you read the link I posted above, it makes perfect sense, and I experienced a sudden drop in engine temperature the other day when I opened the car up on a quiet straight country road, in quite cold weather, so these fluctuations potentially stress the engine block. Also in Lotus Elise circles, they reported a lot of HGF in the winter time, when using the cars on trackdays etc.
Marcus

Dieterīs online version of the MGF encyclopedia covers the subject as well:

http://www.mgfcar.de/thermostat/index.htm

cheers,
david
David Peters

This thread was discussed between 22/02/2008 and 25/03/2008

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