Thread: upright headers bending valves
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05-26-2007 12:22 PM #1
upright headers bending valves
Hello there I have upright headers on my mud drag pickup. It is 50 degrees outside right now. I heard that if it is too cold outside I could possible bend a valve or something with open headers is there any truth to that.
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05-26-2007 12:42 PM #2
It is possible. Not as often as you think it could be. We always built a tennis ball set up with a chain attachment to it so it could easily be installed or removed at the track on short style Zoomies. The Funny Car had insulated pipes so it wasn't a threat to our valves. How big is the inside pipng on your exhaust? Yes, cool air can hit the "Tulip" and cause a slight bend, just not as often as most people think because of rapid heat tranference and good metal technology in the valves themselves.What if the "Hokey Pokey" is what it's really all about?
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05-26-2007 01:26 PM #3
What is the purpose of the tennis ball thing? I just always assumed to keep dirt out of the engine.
Don
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05-26-2007 02:53 PM #4
Originally Posted by ItoldyousoLast edited by pat mccarthy; 05-26-2007 at 04:48 PM.
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05-26-2007 03:51 PM #5
Denny, Pat....don't you see?....when your in staging and things get slow, it gives you some target pratice! We are dumb, but yet we are no so dumb.What if the "Hokey Pokey" is what it's really all about?
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05-26-2007 03:53 PM #6
Seriously, if he can find a fabricator to build an aluminum cap to place over the headers, it will ease his mind of cool air bending the exhaust valves. By the way, have you ever built and played with a potatoe gun? It's is so much fun, it's better than s**.Last edited by nitrowarrior; 05-26-2007 at 04:03 PM.
What if the "Hokey Pokey" is what it's really all about?
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05-26-2007 04:55 PM #7
Allegedly the balls in the tubes will retain enough heat on the valves to keep them from warping....Yesterday is history, tomorrow is a mystery, Live for Today!
Carroll Shelby
Learning must be difficult for those who already know it all!!!!
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05-26-2007 05:18 PM #8
never ask a Irishmen if he has a potatoe gun
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05-26-2007 05:33 PM #9
Sorry Pat, I wasn't thinkingWhat if the "Hokey Pokey" is what it's really all about?
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05-26-2007 06:35 PM #10
what about tractor rain caps??? those would look pretty stupid, but be pretty neat all at the same time LOLYou don't know what you've got til it's gone
Matt's 1951 Chevy Fleetline- Driver
1967 Ford Falcon- Sold
1930's styled hand built ratrod project
1974 Volkswagen Super Beetle Wolfsburg Edition- sold
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05-28-2007 11:49 AM #11
what about tractor rain caps??? those would look pretty stupid, but be pretty neat all at the same time LOL
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05-28-2007 12:39 PM #12
Originally Posted by Matt167
That sounds more like a "hillbilly" thing.
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05-28-2007 02:25 PM #13
actually. I was thinking of the episode of Monster Garage where they took the Chevy Impala ( newer, late 90's ), stuffed a SBC into it, and turned it ito a Zamboni. the exhaust came thru the hood, and used tractor rain caps. now it was pretty funny, but I wouldn't do it myself.You don't know what you've got til it's gone
Matt's 1951 Chevy Fleetline- Driver
1967 Ford Falcon- Sold
1930's styled hand built ratrod project
1974 Volkswagen Super Beetle Wolfsburg Edition- sold
Welcome to CHR. I think that you need to hook up your vacuum advance. At part throttle when cruising you have less air and fuel in each cylinder, and the air-fuel mixture is not as densely packed...
MSD 8360 distributor vacuum advance