Can Detonation Do This????

John Duzac · 07-03-2007, 01:49 AM

Everytime I had detonation it hammered the rings out causing some 30 to 40 % cyl leakage. This was after 10 to 15 runs and evey run would get a little worst. Additionally, we would take the engine out of the car and remove the oil pan only to find what looked like sludge in the pan. The engine looked like we never changed the oil in 50,000 miles! What a mess and a costly on at that! L little colder spark plug and C-14 racing gas cured the problem.

Paul Precht · 07-06-2007, 12:13 AM

When the cam is retarded beyond normal the exaust valves may hit the pistons. The compression will go down at the same time so your chances of a detonation issue where there was none before are almost not possible. Paul.

07-03-2007, 01:49 AM	#1
John Duzac Member Join Date: May 2005 Location: Covington, La Posts: 311 Likes: 63 Liked 83 Times in 20 Posts	Re: Can Detonation Do This???? Everytime I had detonation it hammered the rings out causing some 30 to 40 % cyl leakage. This was after 10 to 15 runs and evey run would get a little worst. Additionally, we would take the engine out of the car and remove the oil pan only to find what looked like sludge in the pan. The engine looked like we never changed the oil in 50,000 miles! What a mess and a costly on at that! L little colder spark plug and C-14 racing gas cured the problem. __________________ John Duzac D/S 4448 STK

07-06-2007, 12:13 AM	#2
Paul Precht Senior Member Join Date: Dec 2001 Location: Elysburg, Pa Posts: 733 Likes: 360 Liked 327 Times in 121 Posts	Re: Can Detonation Do This???? When the cam is retarded beyond normal the exaust valves may hit the pistons. The compression will go down at the same time so your chances of a detonation issue where there was none before are almost not possible. Paul.