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#1 |
Registered User
Join Date: Dec 2011
Location: Sapulpa, OK
Posts: 187
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6 cyl hates the cold
My 235 has Fenton headers, stock manifold. (no heat riser now)
It just got cold here in Oklahoma - and my 235 falls on its face at stop signs. Any good fix for this? |
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#2 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,628
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Re: 6 cyl hates the cold
You need a heat plate.
http://stoveboltengineco.com/catalog...513&id=1222049 |
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#3 |
Registered User
Join Date: Jan 2010
Location: Evensville, TN
Posts: 236
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Re: 6 cyl hates the cold
The heat plate is the only way to go if you want it to run in the cold.
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#4 |
Registered User
Join Date: Apr 2011
Location: Edmond, Ks
Posts: 595
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Re: 6 cyl hates the cold
Not to hijack, but how does this heat plate work exactly?
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Step by steps: Remove primer to reveal original paint Rebuild a carburetor See My Build - Cecilia! ![]() Some people are like slinkys. Not worth much but funny as heck when pushed down stairs. |
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#5 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,628
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Re: 6 cyl hates the cold
Heat plate is spliced into the heater hoses. THe hot water passes thru the plate which is bolted to the intake. The intake is heated that way. You need the heat to keep the fuel vapour that leaves the carb in a gaseous state. If the fuel vapour gets cold then the fuel part of the vapour reverts to a liquid. The fuel puddles in the intake and the remaining vapour that gets to the cylinder is too lean (not much fuel, mostly just air) and it won't burn. Makes your motor cough and sputter. Backfires thru the carb.
IN a normal set up the intake and exhaust on a six are bolted togethor with a spring loaded flapper valve that deflects the exhaust heat up towards the intake to keep it warm. On a V8 there's a heat riser valve on one exhaust manifold that stays closed to divert the exhaust from that side and under the intake to warm up the intake. |
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#6 |
Registered User
Join Date: Apr 2011
Location: Edmond, Ks
Posts: 595
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Re: 6 cyl hates the cold
Thanks Geezer. That's exactly what I was looking for.
__________________
Step by steps: Remove primer to reveal original paint Rebuild a carburetor See My Build - Cecilia! ![]() Some people are like slinkys. Not worth much but funny as heck when pushed down stairs. |
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#7 |
Registered User
Join Date: Dec 2011
Location: Sapulpa, OK
Posts: 187
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Re: 6 cyl hates the cold
Thank you!!!!
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#8 |
Registered User
Join Date: Oct 2010
Location: La Prairie, Quebec
Posts: 231
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Re: 6 cyl hates the cold
Thanks, very helpful.
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#9 |
Registered User
Join Date: Dec 2011
Location: Sapulpa, OK
Posts: 187
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Re: 6 cyl hates the cold
I talked with Tom Langdon - he's shipping a heat plate and an outlet that goes under the thermostat housing. The theromostat housing outlet should make it easier to route hoses to/from the heat plate.
I'll keep you posted on progress. |
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#10 |
Registered User
Join Date: Dec 2011
Location: Sapulpa, OK
Posts: 187
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Re: 6 cyl hates the cold
Got the manifold plate and spacer that goes behind thermostat housing. (this makes plumbing much easier and neater)
Mocked every thing up - had to make a "T" to go in heater hose line, installed the whole setup and had antifreeze pouring out of my plate/manifold gasket. Remounted plate with a THICK cork/rubber gasket and some MegaBlack gasket sealer, torque the crap out of it (not recommended) - and presto - no leaks! Unit works great I can already tell a difference, but temps around here aren't cold yet. It's supposed to get down in the 30s Sunday, so that'll be a good test. Parts all fit as they should, and the folks at Langdon's (including the owner) were VERY helpful! |
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#11 |
Registered User
Join Date: Dec 2011
Location: Sapulpa, OK
Posts: 187
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Re: 6 cyl hates the cold
BTW - the entire deal, hose, bolts, plate, thermostat spacer altogether cost under 100 bucks.
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#12 |
Registered User
![]() Join Date: Sep 2011
Location: FarEastern WVa
Posts: 1,691
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Re: 6 cyl hates the cold
From geezer99 above;
"On a V8 there's a heat riser valve on one exhaust manifold that stays closed to divert the exhaust from that side and under the intake to warm up the intake." On my 1963 283 there are 2 openings, 1 on each side of the intake manifold that allows warm/hot air into the manifold area. Both of these were plugged shut with a carbon crud. I'm in the process of cleaning them out. Posted via Mobile Device
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#13 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,628
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Re: 6 cyl hates the cold
And your point is??
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#14 |
Registered User
![]() Join Date: Sep 2011
Location: FarEastern WVa
Posts: 1,691
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Re: 6 cyl hates the cold
That this thread taught me something that when I had an issue with mine I was able to apply. Before reading the info you posted I wouldn't have had a clue of what or why.
Posted via Mobile Device
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Past Master Triluminar Lodge #117 GL of WVa My 1963 4x4 Suburban build; http://67-72chevytrucks.com/vboard/s...d.php?t=531274 My Gallery, now with pics of my 1966 C30 motorhome. http://67-72chevytrucks.com/gallery/...&ppuser=103447 |
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#15 |
Registered User
Join Date: Dec 2011
Location: Sapulpa, OK
Posts: 187
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Re: 6 cyl hates the cold
Got down to 14 freezing #$^$ degrees this morning. HUGE difference in performance with the heat plate. And now it's supposed to warm up for the next 5 days....I love Oklahoma.
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