Re: [Chrysler300] heat risers

[Bruce Paul <b_paul_ncp@xxxx>]

I have been running my 1966 300 with 440 TNT for years
with the heat riser fixed in the hot position. I used
to experience some plug fouling if I didn't get out on
the highway regularly, but that problem totally
vanished when the lead was taken out of the gas.

Bruce Paul-Cherry Hill


--- "PaddyCaddy ." <paddycaddy@xxxx> wrote:
> 
> I agree that the chokes - obviously - will adjust
> back to "normal" a bit 
> slower just as the engine will warm a bit slower.
> 
> But I'm not sure what would make the plugs foul. 
> Applying this theory 
> that plugs foul if the the engine does not
> immediately warm up would suggest 
> that the higher fuel/air mixture needed while the
> engine is still cold would 
> regularly foul plugs in colder climates where the
> engines obviously would 
> take much longer to warm to operating temperature -
> especially this time of 
> year(or in August for our compadres down under).
> 
> Except for show cars, and for those seeking
> optimal performance and 
> especially less risk, I still say that the
> restriction in the exhaust and 
> the very real potential for siezing still outwieghs
> these other concerns.
> 
> Purposely restricting exhaust flow just strikes
> me as a crazy idea from 
> the getgo - especially in a crossram. 
> Jamming/reversing hot, dirty exhaust 
> gases back into the manifold and greatly increasing
> back pressure back 
> toward the combustion chamber I suspect wreaks far
> more havoc (exhaust 
> valves?) than whatever damage may or not be done by
> not forcing the engine 
> to warm a minute or two earlier.
> 
> 
> 
>
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