Jennings copied the work of Blair. But I did buy a copy of
Jennings book back in 1977.
Normally detonation precedes pre-ignition, and it causes carbon to crackle and pop. It can
also leave a nearly black stain on the piston crown, and a feather edge on the top of the
piston crown.
Roelof: Thank you for posting the engine timings on your web site. It exemplifies the best
of the web, "to share information."
With that information and my experience with exhaust and head temps of similar nitro glow
engines, I was able to calculate the proper speed of sound, and the tuned lengths for tuned
mufflers and tuned pipes.
Thanks
Bill Mazz
Because of forum rules, cut and paste these url into Google:
books.sae.org/author/1073416002/
profblairandassociates.com/GPB_Tribute.html