[6pack] Pinging Engine

[Robert M. Lang]

Hi,

As a point of reference, I have a similar setup on my street car and I 
also have a race motor with a lot higher compression ratio. The static 
compression in the 9.67:1 motor is in the 195-200 range. That's with a GP3 
cam. The 12.3:1 motor compression is more like 245 lb.

Regarding your pinging, you should verify TDC is correct. You might be 
chasing your tail if the ring on the harmonic balancer has slipped and we 
all know that DOES happen from time to time.

On both my motors, I run 10 BTDC at idle and I have a total of 33 degrees 
advance (so the dizzy gives me 23 degrees on top of the 10 static).

No pinging on either motor, the street caar get 93 octane, the race car 
gets 110 octane race fuel.

Let me know if this is helpful.

regards,
rml
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Bob Lang              Triumph TR6!!            |  This space for rent
Former NER Solo Chair                          |
Voice:617-253-7438                             |  Cell: 339-927-4489
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