Moderators: Greenleaf, BC847, Richie O
Richie O wrote:One more thought on a gasket being inside the bore. I have a set of 58 cc hp heads and always had spark knock issues with them. I wondered if it was due to the head being made for the smaller bore 305 ( which is where the 58's came from ). I think there was a small edge of the chamber that may have been causing a pre ignition detonation some times. I blew several pistons with that set up.
mprmn08 wrote:
where you possibly to high compression for a regular and need premium?? good possibility on the spark knock
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