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For those of you who have used ARP head bolts, have you retorqued them or not? The manufacturer states: "Do I need to re-torque my head bolts or studs? If you follow the ARP installation instructions, there should be no need to do a re-torque. However, it may be necessary under certain circumstances if the gasket manufacturer’s instructions require it, particularly if a fire ring has been installed. ARP recommends not doing a re-torque on a hot engine." My engine builder says I should.
Having just completed the Liege - Brescia - Liege rally, (just over 2,000 miles of rally plus another 800 miles getting to Liege and back and during which the car performed nigh on faultlessly), I went out the garage this afternoon to start it up to warm it through preparatory to adjusting the tappets etc., only for it to start spitting (no - pouring!) coolant out through the overflow pipe. Bugger! Does anyone have any suggestions about what it could be apart from a blown head gasket? At least it waited until I got home. Rgds Ian PS In addition to a couple of track tests on a Kart track - all performed in 2nd gear with the engine revving quite hard the rally included crossing both the Stelvio and Gavio passes both ways and at no time during any of this did the engine even overheat.