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Discussion Starter #1 (Edited)
I did a night at the drags a few weeks ago and on the last run (12.01sec) it came off sounding like a chaff cutter. I have disassembled and sealed the exhaust a couple of times and even took off the SC to check for any leaks. No joy. Well today I found the problem. Number 4 exhaust rocker broken. Anyway three hours later with a spare second hand rocker it is running well again. Anyone else experienced this?
 

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That is downright freakish. Not what I would expect to see. With your re-worked heads, where is your rev-limiter set at now?
 

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Discussion Starter #3
That is downright freakish. Not what I would expect to see. With your re-worked heads, where is your rev-limiter set at now?
8600 soft 8700 hard
 

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Finding the limits of the motor , ehh?
 

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