#1  
Old 02-15-2020, 12:12 AM
mike76 mike76 is offline
Senior Chief
 
Join Date: Oct 2011
Location: Cleveland,Ohio
Posts: 300
Default how hot can exhaust tips get?

450-475 hp and full 3" exhaust. Just wondering if I can get away with painting them( rustoleum) as part of my scheme. Thx, Mike

  #2  
Old 02-15-2020, 01:21 AM
Scarebird's Avatar
Scarebird Scarebird is offline
Ultimate Warrior
 
Join Date: Nov 2002
Location: ABQ, USA
Posts: 4,998
Default

462 with 2-1/4" exhaust melted plastic hosing used to kill moles.

  #3  
Old 02-15-2020, 04:07 AM
firechicken's Avatar
firechicken firechicken is offline
Ultimate Warrior
 
Join Date: Jan 2001
Location: BC Canada
Posts: 1,624
Default

Use high temp paint you won't have a problem. Think bbq but color may be a factor. Engine paint would be fine as well. Summary...use the right paint.

  #4  
Old 02-15-2020, 05:48 AM
dataway's Avatar
dataway dataway is offline
Ultimate Warrior
 
Join Date: Jan 2012
Location: Saratoga NY
Posts: 8,921
Default

I can't imagine exhaust tips would get any warmer than about 150 F. Hot enough to be uncomfortable to hold on to, but not hot enough to damage most any paint.

  #5  
Old 02-15-2020, 07:45 AM
steve25's Avatar
steve25 steve25 is offline
Ultimate Warrior
 
Join Date: May 2008
Location: Westchester NY
Posts: 14,630
Default

You should be fine with any type of good Enamel paint as they are tipically baked to improve the paints hardness anyway!

__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!

1) 1940s 100% silver 4 cup tea server set.

Two dry rotted 14 x 10 Micky Thompson slicks.

1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.

Education is what your left with once you forget things!
  #6  
Old 02-16-2020, 10:51 PM
amcmike's Avatar
amcmike amcmike is offline
Ultimate Warrior
 
Join Date: Oct 2004
Posts: 1,733
Default

Can depend on how much fuel enrichment you're running. To give you some idea, OEMs will typically run <12:1 to protect the catalyst which can reach up to 900C (1652F).

Now a tailpipe is far away from where a catalyst would be, but that's still a lot of heat to cool before it exits. Normal enamel paint is good up to 200F. It'd probably be safe @ idle, but at full WOT I think you'd see higher than that. I would go with a high temp paint to be sure.

__________________
"The Mustang's front end is problematic... get yourself a Firebird." - Red Forman
  #7  
Old 02-17-2020, 11:55 AM
72projectbird's Avatar
72projectbird 72projectbird is offline
Ultimate Warrior
 
Join Date: Jul 2013
Location: N.E Massachusetts
Posts: 2,003
Default

Regular high heat paint will work fine. I paint headers with it, and they survive, so tails will be no problem.

__________________
"Those poor souls have made the fatal mistake of surrounding us. Now we can fire in any direction"

1970 Trans Am RAIII 4 speed
1971 Trans Am 5.3 LM7
1977 Trans Am W72 Y82
1987 Grand National
  #8  
Old 02-17-2020, 01:13 PM
Formulajones's Avatar
Formulajones Formulajones is online now
Ultimate Warrior
 
Join Date: Jan 2012
Posts: 10,791
Default

Use the POR 15 high temp paint and you'll never have to worry about it. I use this stuff on exhaust manifolds and after years of daily driving it still looks fresh.

https://www.jegs.com/i/Perma-Cool/77...IaArFJEALw_wcB

Also comes in silver and cast iron grey

  #9  
Old 02-22-2020, 05:13 PM
NeighborsComplaint's Avatar
NeighborsComplaint NeighborsComplaint is offline
Ultimate Warrior
 
Join Date: Aug 2009
Location: Elgin
Posts: 2,468
Default

I touched up the welds on my header collectors, mufflers and exhaust tips with Rustoleum Stainless Steel Gray and it holds up fine to the heat even though it is not heat rated.

__________________
Triple Black 1971 GTO
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:52 AM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Copyright © 2017