Re: [Amc-list] overheating, and Smokey Yunick

[Wrambler242@xxxxxxxxxxx]

Hmm,
pyrometers are as close as the nearest diesel guys hotrod shop.
Dash computer by any number of different companies will give you a fair read on power levels too.
 
It's all too much for my head...

I just want to have time when someone is not dragging me here or there to do something.
I haven't even started the American in a month again.
--
Mark Price
Morgantown, WV
1969 AMC Rambler, 4.0L, EFI, T-5
2004 Grand Cherokee Laredo, 4.7L, Quadratrac II
" I realize that death is inevitable.
I just don't want to be around when it happens! "

 -------------- Original message ----------------------
From: Tom Jennings <tomj@xxxxxxx>
> Speaking of overheating...
> 
> What with Bruce Hevner mentioning Yunick some time back I found a copy 
> of POWER SECRETS cheap on abebooks.com. (I realized later I'd read it 
> long ago, but lost it.)
> 
> OK, it's 100% Brand C, but man, it's worth reading. Every single thing 
> the guy talked about (early 1980's) as 'new' or 'coming trends' has 
> happened. Coil-per-plug, electronic FI, metallurgy, etc, you name it.
> 
> Funny too as a lot of what he recommends for making effective HP is ... 
> boring, unexciting, and it looks like, rarely followed. He's one of 
> those umm jerks who never believes what he's told, and tests tests 
> tests. Probably pissed off a lot of friends. Stuff like when big cams, 
> big valves, big lift all a waste of time (and when they're not). Spend 
> money on exhaust systems (boring, unflashy). That sort of thing.
> 
> If you look at his projects you can see he deeply gets one really 
> critical thing: heat as energy. He says an ordinary radiator, 18 x 20 
> inches, is plenty, and mostly what he talks about building is 500 - 
> 700hp. The hint is, that heat should be going into the flywheel, not the 
> water our out the tailpipe. Hot exhaust and hot heads means bad 
> combustion, and that's true even in little street sixes.
> 
> Overheating, unless something's broken or plugged up, is an engine 
> geometry or tuning problem, period.
> 
> If I had access to a dyno to build motors with, the instrument I'd use 
> for tuning is an exhaust pyrometer. Max HP + lowest exhaust temp, there 
> you go, as a rule of thumb you can't get better.
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