Join Date: May 2003
Location: brisbane - moreyfeild
sorry for my reply time... net problems.
i was told be my mechanic that the hyper would be no good for more than 8psi, so i also asked kyle his thoughts on them... this is his reply
The hyperutectics will handle 700-800hp, I only had them in my falcon, so does anthony briggs 9 sec cortina. I would stick to at least 8:1, preferably 8.5:1.
I would also recommend putting in mineral oil of very good quality for the first 500klm's, and I would advise to thrash the ass off the car as much as physically possible, the only thing I would do is set the rev limit about 500rpm lower than final, say 5000-5200rpm, this will not hurt the engine, and will bed the rings in the best. My car was on the dyno and getting the shit ringed out of it 10min after it was going properly, but don't forget to change the oil at 50, 200, and 500klms, the last being to Mobil 1 synthetic.
You mechanic is a toss, to say the least, and I would find a new one, LITERALLY. I GARANTEE that these pistons will handle at least 700hp, as long as it is tuned correctly.
i hope this has answered a few questions for other users, it was a little late for me as i have decided to post-pone the turbo set-up and go for a shot of nitrous until funds become available again.