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**'68OrangeSunshine** · 06-26-2019, 04:10 PM

My 292 usually runs 17'' Hg, at 700 RPM idle, 180* H2O (warmed up). It goes higher if I'm downshifting, and drops to 0 if I step on the gas.
A couple of times I've spotted valve trouble early when the needle bounced at 10''Hg at idle. It was a broken exhaust valve spring.
I run a Moon 2-3/8'' gauge under the dash full time.

06-26-2019, 04:10 PM	#72
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,054	Re: 292 Questions My 292 usually runs 17'' Hg, at 700 RPM idle, 180* H2O (warmed up). It goes higher if I'm downshifting, and drops to 0 if I step on the gas. A couple of times I've spotted valve trouble early when the needle bounced at 10''Hg at idle. It was a broken exhaust valve spring. I run a Moon 2-3/8'' gauge under the dash full time. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.