Cherry red headers
Cherry red headers Hey guys so I did the cam, valve springs and injectors then had the car tuned.... Decided to do heads with bigger headers along with racetronix in tank pump.... Car runs and drives but the headers get cherry red I know a retune is prob needed just wanted your inputs....
Thanks
Thanks
I had a fast 90 bottom shell crack on me once. It idled around 2500 rpm and had the headers glowing red. So I would say it can also be a lean issue. New heads, and cam will want a good bit more fuel.
Check your timing, check your a/f ratio
At idle, it might be difficult to glow red with simply a lean condition. It usually takes an exhaust restriction, or severely reduced ignition timing, to cause a red condition at idle. Unless the tube is very thin walled (I am more used to turbocharger manifolds which are far thicker).
Biggest dangers are, you could melt/warp the parts of the engine, like the header flange or head. Also if any water splashes up on them while they are that hot they might crack. Did you degree wheel the new cam?
At idle, it might be difficult to glow red with simply a lean condition. It usually takes an exhaust restriction, or severely reduced ignition timing, to cause a red condition at idle. Unless the tube is very thin walled (I am more used to turbocharger manifolds which are far thicker).
Biggest dangers are, you could melt/warp the parts of the engine, like the header flange or head. Also if any water splashes up on them while they are that hot they might crack. Did you degree wheel the new cam?
When I installed the cam and springs and had the car tuned it was fine and running very well.... After that I decided to buy some 799 heads p&p with 3 angel valve job and the fast92mm with 92mm throttle body..... The idle on initial startup will rev to about 1500rpm and surge until it warms up then its idling at 1200..... If I drive for a bit and press the clutch in idle will jump to 2000 then come back down but does like to hang here and there.... I am 100% sure the cam is dot to dot.... Nope I didn't degree the cam.... I have the catted Y hooked to the headers no exhaust....
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
If an engine springs a vacuum leak the RPM increases with its magnitude. A large enough vacuum leak to cause a serious lean condition at idle will make the engine "pop, skip and jump"(backfire, miss, sputter) as if it had a radiacal camshaft (almost) and the idle will be higher than it should be, as an obvious indicator. It is very rare to see a glowing exhaust in this condition because the temperature generated by the lean condition is not excessive near idle speeds,, because the quantity of fuel is minimal (there is very little fuel mass to extract energy from near idle speeds)
