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Author Topic:   red hot headers
sniper
Member
posted August 07, 2003 07:09 PM
wat is timing set at?????????


teamstertom
Member
posted August 07, 2003 08:15 PM
Isn't this a sign of unburned fuel laying around getting real hot?

Could be she's a little rich.......

BGA
Member
posted August 07, 2003 09:01 PM
I would think unburned fuel would be cool, could be wrong though. I would be thinking way to lean, that would make it real hot too.


outlawstock17
Member
posted August 07, 2003 09:14 PM
retarded timing.


BGA
Member
posted August 07, 2003 10:55 PM
outlawstock,
Could you explain how retarded timing would make the headers glow red? Not trying to be a jerk, just want to know how that works.


sniper
Member
posted August 08, 2003 10:11 AM
Slow timing causes a bad burn in the cylinders which results in rich exaust that ignites in the header tube and burnes all the way out and if the fuel mixture is to rich it will make it even worse....This probaly wasnt worded the best in the world but maybe you can get what Im trying to say....Towman


outlawstock17
Member
posted August 08, 2003 10:52 AM
BGA, towman nailed it. if the timing is late(retarded), the fuel mixture doesn't have enough time to burn completely before the exhaust valve opens. the unburned(or still burning) mixture exits the head and burns in the exhaust system. if your running rich, there will be more unburned fuel available and the problem will be worse.

sniper, if you have fuel trickling out of the boosters after you shut the engine down, either the needle and seat are worn or there is trash in your fuel keeping them from seating. too much fuel pressure could also be the culprit.

[This message has been edited by outlawstock17 (edited August 08, 2003).]

sniper
Member
posted August 08, 2003 02:52 PM
plug wires on wrong plugs


gerald berry jr
Member
posted August 08, 2003 03:03 PM
if the right ones are switched up will barely miss won't notice it on the track


BGA
Member
posted August 08, 2003 05:27 PM
outlawstock & towman,
Thanks for the reply. Now I understand how the retarded timing deal works. Thanks for explaining that to me, I can be real slow sometimes.
BGA



iowa_dirt_track_girl
Member
posted August 09, 2003 12:20 AM
ok since we are on this topic when running a hydralic cam on half mile the manifolds glow red the timing is at 35 on a 9.0 motor and have played with the jetting if we go both ways rich or lean it still does this it runs fine and makes plenty of power and have not burned it up yet i have pulled it down and the walls are not scared or showing any kinds of melting but the manifolds glow so red the it will catch the plug wires on fire !!

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you never know how fast you are going when your in the lead, until you blow the announcers hat off!!!


norightturn
Member
posted August 09, 2003 07:15 AM
ia girl might want to look into valve spring maybe they are not seating and letting the burn excape into the exausst i've seen that too


towmandan
Member
posted August 09, 2003 02:22 PM
The less compression you have the more advance you need you sound close but I would bump it up a to 38 or a little more if it will take it and see if it helps and remember it can be a combination of timing and to much fuel and changing one at a time may not fix it......Towman


rico 08
Member
posted August 09, 2003 08:28 PM
A 9:1 motor has a tendency to do this in the same way slow timing will,just a different cause.Try more timing,i ran a 9:1 motor on pump gas all the way to 42 degrees timing on regular pump gas with 882 heads.At 35 degrees it would loose major horsepower,One thing i noticed that timing is extremely critical on lower compression motors compared to high squeeze motors.


ryan
Member
posted August 10, 2003 10:33 AM
Have you had a valve job done on it. I have had a brand new set of bowties turn the headers bright orange and it turned out that the valves weren't sealing and letting fuel into the exhaust. jmo


iowa_dirt_track_girl
Member
posted August 10, 2003 10:48 AM
the thing that i have found on 9 to 1 motors is that without the compression and a little slower timing it gives the fuel a little more time to "squeze" in the cylinder before it fires thus making more ponies
am i right on thinking this way?


norightturn
Member
posted August 11, 2003 08:27 AM
Ive ran into the same thing from time to time.
fuel(too much/to little)
retarded timing as well.
the othe thing thats happened on a low compression is too much cam (overlap)
with all the other posts that pretty much covers every thing
later folks


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