Henri, I would try another barrel of fuel, anyway you will probably open the engine now because its the end of the season (unless you go to Gardermoen, Norway this weekend)it would be wise to measure the bores for roundess with a micrometer.
Andr� > Next to restoring my chevelle, I'm also a mecanic in Team ProStreet > Dragracing. We race a 1999 Chevy Monte Carlo ProMod, with 632 Donovan engine > (built by Pat Musi). > The last races we did we had a lot of problems with detonation and so burned > a lot of pistons. (burned 8 pistons in 1st elimination round in the Eu ropean > Finals at SantaPod, Engeland). > We have two ideas how this could happen. > 1. Change in fuel. We use C23 VP fuel, but changed to another barrel h alf > this season, same time as the problems started. Can I test octane numb er? > 2. Because the stroke is relatively big, the pistons comes out of the boring > for 1/2 - 3/4 in most lowest position. The bores are not changed for the > last two years. Could the bores be oval so the piston play is bigger a nd it > takes oil up, which causes detonation? > > Any input is appriciated! > > Because this is not chevelle related maybe responses offlist. > > Thanks > Henri > '66 Malibu 230 > The Netherlands > > --- > Outgoing mail is certified Virus Free. > Checked by AVG anti-virus system (http://www.grisoft.com). > Version: 6.0.384 / Virus Database: 216 - Release Date: 8/21/02 > > > ----------------------------------------------------- > To Unsubscribe please visit www.chevelles.net/list.html > To start a new topic, send mail to: [EMAIL PROTECTED] > ----------------------------------------------------- To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]
