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pmc847 pmc847 is offline
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Join Date: Jan 2003
Location: Cross Plains, Wis
Posts: 979
I tried advancing the timing on my 03 BCR but had to go back to oem because of pinging and the 03 defiantly needed premium fuel.

I've advanced the timing about 3 degrees on my 04 BCR and run midgrade. I can also use regular with no ill effects. I think the twin spark motor is a lot more tolerant when it comes to advancing the timing a bit. All that and 220 psi cranking pressure (calculated 12.3 CR).

Yes, the motor did go boom but according to Chris Hodgson the problem was caused by a broken exhaust valve. He surmised the exhaust valve failed because possible when the seats were ground for the new valves they were not ground concentric with the valve guides. He claims that some of the new fangled valve grinding tools just don't do a very good job.

Philip
Old 06-28-2007, 02:52 PM
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