Re: [AMC-List] AMC six ignition timing -- got it!

[Tom Jennings <tomj@xxxxxxx>]

On Fri, 8 Dec 2006, Mark Price wrote:

>  I think the T-stat is supposed to open at 195*. full opening
> is quick it almost flips open IIRC. 

Well mine is definitely not switching close to open at 195!
I think it's beginning to open slightly at 170 (or whatever)
and fully open at 195. I guess I will go RTFM. With a big fat
new 3-row radiator maybe even a trickle of cool water may keep
it at 170. If so, not much I can do about it, and switchin to
a 180 thermo would lower it even more!

> 180* except for the fact that the lower operating temp may kill
> your residual ping. You want to keep the engine temp up as close
> to the 190+ range for good economy. But since your carbed and
> it's an easy swap and you have one, I'd probably throw it in and
> see what happens.  

With the current setup, it only pings after idling in traffic
etc so the temp rises to the thermostat number and I then get
on it. Eh.

Last night I fiddled with the electric fan thermostatic switch.
I never really know how to set those! I had it coming on at
200 or so (eg. it never comes on on the freeway, only in traffic)
but I adjusted it down to 185 using my infrared thermometer
and it cycled on/off just fine, so maybe that will solve
the problem by itself.

> fine. NO ping at all, I had it in to keep engine temps down as
> my shortblock is a warranty pull for piston noise when hot,
> so I thought I'd keep it cooler and see what happened. I've
> never heard said piston noise and enjoy my "free" 4.0L greatly!

Wow, that's weird. Some piston scuffing a wall when hot?

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