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exhaust manifold for 65' stock 225
https://slantsix.org/forum/viewtopic.php?t=2389
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Author:  flyinfish [ Thu Jul 12, 2001 1:44 am ]
Post subject:  exhaust manifold for 65' stock 225

my valve on the exhaust manifold heat riser will not open all the way, goes about 75 % open, most of the time. sometimes it barely opens at all. well i turned it to the spring steel stop and the stop broke. i am trying to find out why my eng runs so hot. it is a fresh motor but my other one ran hot too. so it's either that thing or the carb.can i get a whole new spring kit for the valve? and if it only opens 75% some of the time would that be a good guess for my heat prob? and.... should it remain open when the eng gets to temp or should it go back and forth with different throttle positions.. thanks

pljaime@gta.net

Author:  Doctor Dodge (Doug Dutra) [ Thu Jul 12, 2001 10:19 am ]
Post subject:  Re: exhaust manifold for 65' stock 225

Quote:
: mM valve on the exhaust manifold heat riser
: will not open all the way, goes about 75 %
: open, most of the time. sometimes it barely
: opens at all. well i turned it to the spring
: steel stop and the stop broke. i am trying
: to find out why my eng runs so hot. it is a
: fresh motor but my other one ran hot too. so
: it's either that thing or the carb.can i get
: a whole new spring kit for the valve? and if
: it only opens 75% some of the time would
: that be a good guess for my heat prob?
: and.... should it remain open when the eng
: gets to temp or should it go back and forth
: with different throttle positions.. thanks


I don't think this is the cause. I would take another look at the radiator, I have seen "crap" out of recently rebuild engines plug-up a good radiator fast. Are all the radiator "cores" (tubes) clear when you look in from the top? (drain the level down some and look.)

Cooling is about water circulation and heat transfer in the radiator. With a big & efficiant (well working) radiator, you can cool just about anything.
DD

Author:  richard [ Thu Jul 12, 2001 6:29 pm ]
Post subject:  Re: exhaust manifold for 65' stock 225

Quote:
: I don't think this is the cause. I would take
: another look at the radiator, I have seen
: "crap" out of recently rebuild
: engines plug-up a good radiator fast. Are
: all the radiator "cores" (tubes)
: clear when you look in from the top? (drain
: the level down some and look.)
:
: Cooling is about water circulation and heat
: transfer in the radiator. With a big &
: efficiant (well working) radiator, you can
: cool just about anything.
: DD

I agree. I went to roseburg oregon and back last weekend with valient, upndown hills, thermo guage never budged (no, I didn't hotwitre a resistor to it) from 3/4. radiator was a used job out of a 66 dart in hte paper. I doubt that the exhaust would be a preoblem.


richard-c@e-d-a.com

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