headers cherry red????!

onehot351 · February 8th, 2008, 01:41 PM

fired up the car last night after putting a 750 holley dp on her.. and after a couple of minutes the headers were glowing red... the fuel pressure is 8.5 psi, its a 351w, D00E heads, Offy 360 intake, crane fireball 2 cam, hei conversion, ... whats the deal? vaccum leak?

crowbar73 · February 8th, 2008, 02:16 PM

does the car have cats on it, possibly clogged? I have seen clogged converters make the exhaust pipe glow before the converter?

fogged306 · February 8th, 2008, 02:19 PM

Usually glowing headers are an indication of running rich. Unburnt fuel is igniting in the primary tubes causing them to get too hot.

TurboLX · February 8th, 2008, 02:30 PM

Its running lean

fogged306 · February 8th, 2008, 02:55 PM

Let me revise that, its retarded timing that couses the unburnt fuel in the primaries to ignite. and yes, extreme lean conditions can do it too.

fogged306 · February 8th, 2008, 03:03 PM

Ok one more time... I've been reading up on this one.. Glowing at idle can mean rich, because of what I've stated before, meaning, retarded timing.. Glowing while under load, means lean.

shurb125 · February 8th, 2008, 03:07 PM

I had this happen to me two weeks ago and once I advanced the timing 14-15* the headers no longer got red, my 2cents

ryans88gt · February 8th, 2008, 03:47 PM

Timing....timing....timing.

onehot351 · February 8th, 2008, 04:11 PM

theres no cats on the car, bbk shortys, h-pipe- 40 series dumps,
its glowing red at idle, we checked the fuel pressure before and it was 12 psi.. so we turned it down to 8.5 psi.. but still glowing red. next is timing.. thanks guys ill keep ya posted.

Goblin · February 8th, 2008, 04:37 PM

Thats definately a timing issue. I would even say bring your fuel pressure down to 7.5psi (atleast thats where most carb manufactures reccomend it to be).

Iwannagofast · February 8th, 2008, 04:38 PM

you should just leave it.......that just means the engine is crazy mean

tehdwarvenn · February 8th, 2008, 05:46 PM

lmao...

Devine · February 8th, 2008, 05:48 PM

agreed, spitting flames and glowing red metal parts just means your car is badass and possibly possessed.

February 8th, 2008, 01:41 PM	#1
onehot351 Newbie Join Date: Aug 2007 Posts: 24 iTrader: 0 reviews	headers cherry red????! fired up the car last night after putting a 750 holley dp on her.. and after a couple of minutes the headers were glowing red... the fuel pressure is 8.5 psi, its a 351w, D00E heads, Offy 360 intake, crane fireball 2 cam, hei conversion, ... whats the deal? vaccum leak?

February 8th, 2008, 02:16 PM	#2
crowbar73 Regular 1989 Mustang GT Join Date: Jul 2007 Location: Waynesboro, VA Posts: 132 iTrader: 0 reviews	does the car have cats on it, possibly clogged? I have seen clogged converters make the exhaust pipe glow before the converter? __________________ He is no fool who gives what he cannot keep to gain what he cannot lose." Jim Elliot Garage: http://www.moddedmustangs.com/forums...-member-10915/

February 8th, 2008, 02:30 PM	#4
TurboLX I Post Entirely Way Too Much 1988 Mustang LX Turbo Join Date: Oct 2006 Location: NY Posts: 8,792 Blog Entries: 1 iTrader: 0 reviews	Its running lean __________________ 1988 LX Coupe 2.5L, GT35R, 44mm WG, 32psi, C16.

February 8th, 2008, 03:03 PM	#6
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,666 iTrader: 1 reviews	Ok one more time... I've been reading up on this one.. Glowing at idle can mean rich, because of what I've stated before, meaning, retarded timing.. Glowing while under load, means lean. Last edited by fogged306; February 8th, 2008 at 03:05 PM.

February 8th, 2008, 03:07 PM	#7
shurb125 Regular 1993 Mustang LX Vert Join Date: Nov 2006 Location: South Carolina Posts: 437 iTrader: 0 reviews	I had this happen to me two weeks ago and once I advanced the timing 14-15* the headers no longer got red, my 2cents __________________ 306 TFS heads stage 3 port & polished, TFS stage 2 cam, TFS Track heat intake, DSS pistons, 24# injectors, 76mm MAF, 70mm BBK/Edelbrock TB and spacer

February 8th, 2008, 02:19 PM	#3
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,666 iTrader: 1 reviews	Usually glowing headers are an indication of running rich. Unburnt fuel is igniting in the primary tubes causing them to get too hot.

February 8th, 2008, 02:55 PM	#5
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,666 iTrader: 1 reviews	Let me revise that, its retarded timing that couses the unburnt fuel in the primaries to ignite. and yes, extreme lean conditions can do it too.

February 8th, 2008, 03:47 PM	#8
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,627 iTrader: 0 reviews	Timing....timing....timing. __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

February 8th, 2008, 04:11 PM	#9
onehot351 Newbie Join Date: Aug 2007 Posts: 24 iTrader: 0 reviews	theres no cats on the car, bbk shortys, h-pipe- 40 series dumps, its glowing red at idle, we checked the fuel pressure before and it was 12 psi.. so we turned it down to 8.5 psi.. but still glowing red. next is timing.. thanks guys ill keep ya posted.

February 8th, 2008, 04:37 PM	#10
Goblin Hardcore Enthusiast 88mm Join Date: Apr 2007 Location: Tucson, AZ Posts: 2,111 iTrader: 0 reviews	Thats definately a timing issue. I would even say bring your fuel pressure down to 7.5psi (atleast thats where most carb manufactures reccomend it to be). __________________

February 8th, 2008, 04:38 PM	#11
Iwannagofast Hardcore Enthusiast 1990 Mustang GT havent gone since gears Join Date: Feb 2007 Location: Arkansas Posts: 2,929 iTrader: 0 reviews	you should just leave it.......that just means the engine is crazy mean

February 8th, 2008, 05:46 PM	#12
tehdwarvenn Regular Join Date: May 2007 Location: Columbia SC Posts: 301 iTrader: 0 reviews	lmao... __________________ 1993 Mustang GT, catless h-pipe, bbk shorties, 40 series flows, bbk rear suspension, edelbrock front suspension, AUTOLITES!!! =), k&n, underdrives, 3.73's

February 8th, 2008, 05:48 PM	#13
Devine Regular 1992 LX 5.0 Join Date: Oct 2007 Location: Birmingham, AL Posts: 334 iTrader: 0 reviews	agreed, spitting flames and glowing red metal parts just means your car is badass and possibly possessed.

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