Exhaust manifold GLOWING HOT

smokin_6.0 · 01-25-2008, 07:37 PM

What would cause this? Its a 85 NA

I know a lean condition would cause this but it seems to be running fine. What would you suggest?

Thanks

Braxton

curvesrgood · 01-25-2008, 08:31 PM

Glowing hot all the time or after a hard drive??... my stock one Always glows orange after a nice "spirited" jaunt. You don't notice it so much unless the heat shields are off, then it is very noticeable, especially at night. I haven't noticed how much/often my N/A glows, the S/C doesn't have heat shields on so I see it glowing pretty often

.

Mista 2 · 01-26-2008, 06:24 AM

wow thats good to know, have you measured your intake temps b4 and after taking the heat shield off? or did you get any performance change?

mr2ace · 01-26-2008, 11:21 AM

This happened to one of my old Fieros a long time ago... The exhaust manifold was glowing red. It turns out that the cat was plugged.

MR2TRD1 · 01-26-2008, 02:32 PM

my turbo manifold glows after spirited drives...and I'm running crazy rich. Your probably fine.

curvesrgood · 01-26-2008, 06:00 PM

I haven't checked the temps so I'm not really sure. I've got a Spal fan stuck up under my intercooler so I figured taking the heat shield off wouldn't have an adverse effect on engine bay temperatures really. It doesn't seem to anyway.

SteveAW11 · 01-31-2008, 11:02 AM

I agree with MR2ace, but another factor with a clogged Catco is if your power seems almost gone seems like it would be struggling to get up to speed.

smokin_6.0 · 01-31-2008, 01:09 PM

can i run a test pipe in place of my cat? Just to try to see if it is plugged and it is causing the manifold to get hot? Will it set off any codes or cause any other probs?
Also can you gut on of these cats? Just to use as a test pipe? What would this hurt besides the ozone?
Thanks

mopwer · 01-31-2008, 01:17 PM

Quote:

Originally Posted by smokin_6.0

can i run a test pipe in place of my cat? Just to try to see if it is plugged and it is causing the manifold to get hot? Will it set off any codes or cause any other probs?
Also can you gut on of these cats? Just to use as a test pipe? What would this hurt besides the ozone?
Thanks

If you go as far as to take the cat off, you will be able to tell if its plugged. You won't be able to see much light through it. This would be my guess as well. Put a high flow cat on in its place. Be sure to get the correct type especially if you have to get emissions tested.

Greg

smokin_6.0 · 01-31-2008, 06:35 PM

i guess my question is will it run correctly with no cat at all

mopwer · 01-31-2008, 06:49 PM

Quote:

Originally Posted by smokin_6.0

i guess my question is will it run correctly with no cat at all

Yes.

Greg

E T Haggis · 02-03-2008, 04:45 PM

yup yup yup no cat for me lol but sounds like it had beans for supper lol major fart can. that is the only downside and i hate it.

F0Bman · 04-09-2008, 02:16 AM

You're probably fine, just don't throw cold water on it like Jiffy Lube did with mine.

Kevman · 04-09-2008, 02:51 AM

Lol what?

01-25-2008, 07:37 PM	#1 (permalink)
smokin_6.0 No Skills Join Date: Feb 2007 Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (1/100% )	Exhaust manifold GLOWING HOT What would cause this? Its a 85 NA I know a lean condition would cause this but it seems to be running fine. What would you suggest? Thanks Braxton

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01-25-2008, 08:31 PM	#2 (permalink)
curvesrgood three mk1's Join Date: Feb 2006 Location: NC Posts: 345 Thanks: 7 Thanked 26 Times in 21 Posts iTrader Rating: (0/0% )	Glowing hot all the time or after a hard drive??... my stock one Always glows orange after a nice "spirited" jaunt. You don't notice it so much unless the heat shields are off, then it is very noticeable, especially at night. I haven't noticed how much/often my N/A glows, the S/C doesn't have heat shields on so I see it glowing pretty often .

01-26-2008, 06:24 AM	#3 (permalink)
Mista 2 Cage Fighter Join Date: Nov 2006 Location: Adelaide, Australia Posts: 461 Thanks: 16 Thanked 21 Times in 21 Posts My Google Map iTrader Rating: (0/0% )	wow thats good to know, have you measured your intake temps b4 and after taking the heat shield off? or did you get any performance change?

01-26-2008, 11:21 AM	#4 (permalink)
mr2ace living life out loud Join Date: Aug 2007 Location: Naperville, IL Posts: 146 Thanks: 5 Thanked 2 Times in 2 Posts My Google Map iTrader Rating: (0/0% )	This happened to one of my old Fieros a long time ago... The exhaust manifold was glowing red. It turns out that the cat was plugged.

01-26-2008, 02:32 PM	#5 (permalink)
MR2TRD1 pimpin' valet ;-) Join Date: Feb 2005 Location: Atlanta Posts: 2,135 Thanks: 1 Thanked 37 Times in 34 Posts iTrader Rating: (17/100% )	my turbo manifold glows after spirited drives...and I'm running crazy rich. Your probably fine.

01-26-2008, 06:00 PM	#6 (permalink)
curvesrgood three mk1's Join Date: Feb 2006 Location: NC Posts: 345 Thanks: 7 Thanked 26 Times in 21 Posts iTrader Rating: (0/0% )	I haven't checked the temps so I'm not really sure. I've got a Spal fan stuck up under my intercooler so I figured taking the heat shield off wouldn't have an adverse effect on engine bay temperatures really. It doesn't seem to anyway.

01-31-2008, 11:02 AM	#7 (permalink)
SteveAW11 Cage Fighter Join Date: Jan 2008 Posts: 107 Thanks: 1 Thanked 10 Times in 9 Posts iTrader Rating: (1/100% )	I agree with MR2ace, but another factor with a clogged Catco is if your power seems almost gone seems like it would be struggling to get up to speed.

01-31-2008, 01:09 PM	#8 (permalink)
smokin_6.0 No Skills Join Date: Feb 2007 Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (1/100% )	can i run a test pipe in place of my cat? Just to try to see if it is plugged and it is causing the manifold to get hot? Will it set off any codes or cause any other probs? Also can you gut on of these cats? Just to use as a test pipe? What would this hurt besides the ozone? Thanks

01-31-2008, 06:35 PM	#10 (permalink)
smokin_6.0 No Skills Join Date: Feb 2007 Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (1/100% )	i guess my question is will it run correctly with no cat at all

02-03-2008, 04:45 PM	#12 (permalink)
E T Haggis I Like Rusty Spoons Join Date: Nov 2007 Location: Deland Posts: 585 Thanks: 61 Thanked 8 Times in 8 Posts iTrader Rating: (0/0% )	yup yup yup no cat for me lol but sounds like it had beans for supper lol major fart can. that is the only downside and i hate it.

04-09-2008, 02:16 AM	#13 (permalink)
F0Bman Cage Fighter Join Date: Mar 2008 Posts: 257 Thanks: 0 Thanked 3 Times in 3 Posts iTrader Rating: (0/0% )	You're probably fine, just don't throw cold water on it like Jiffy Lube did with mine.

04-09-2008, 02:51 AM	#14 (permalink)
Kevman L thinks you're Kira Join Date: Mar 2008 Location: Inland Empire Posts: 70 Thanks: 1 Thanked 3 Times in 3 Posts iTrader Rating: (0/0% )	Lol what?