Notices
GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

Header wrap

Thread Tools
 
Search this Thread
 
Old 06-24-2015, 09:01 PM
  #1  
Teching In
Thread Starter
 
02AWDAWSDenali's Avatar
 
Join Date: Sep 2014
Location: Alabama
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default Header wrap

Should I wrap my new dynatech headers with an exhaust wrap? I assume since they're stainless steel they'll be giving off a ton of heat.
Old 06-25-2015, 04:26 PM
  #2  
Slowest turbo build ever!
iTrader: (2)
 
black00chev's Avatar
 
Join Date: Dec 2009
Location: Warrenton, VA
Posts: 2,905
Received 1 Like on 1 Post
Default

I don't see where it would hurt at all. The header wrap does a good job keeping the heat in.
Old 06-25-2015, 05:12 PM
  #3  
TECH Enthusiast
iTrader: (1)
 
ezdaar's Avatar
 
Join Date: Jul 2010
Location: Houston
Posts: 629
Received 21 Likes on 19 Posts
Default

Coat them with one can per header with VHT ultra high temp ceramic header paint. then wrap them with the 2" wrap. be careful to overlap it 1", this doubles the thickness of the wrap and is VERY effective at reducing under hood temps.
I used a industrial Heat gun to bake each primary as I coated mine.

After a couple WOT free way runs, I can pop hood and grab a header primary. yes its hot as ****, but I don't burn myself.
Old 06-26-2015, 12:21 AM
  #4  
Teching In
Thread Starter
 
02AWDAWSDenali's Avatar
 
Join Date: Sep 2014
Location: Alabama
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default

I probably won't paint them and just stick to wrapping them. I already have high iats so I figure headers will definitely make it worse so I'll probably get some wrap here soon.
Old 06-26-2015, 11:16 AM
  #5  
Slowest turbo build ever!
iTrader: (2)
 
black00chev's Avatar
 
Join Date: Dec 2009
Location: Warrenton, VA
Posts: 2,905
Received 1 Like on 1 Post
Default

I agree with ezdaar. If you get 2" wrap, overlap by 1".
Old 06-26-2015, 11:18 AM
  #6  
TECH Senior Member
iTrader: (27)
 
GMCtrk's Avatar
 
Join Date: Jul 2004
Location: Dallas
Posts: 12,275
Received 17 Likes on 17 Posts
Default

I wouldn't wrap or coat them at all personally. The stainless turns a beautiful color once heat cycled and gives a great look. Yes, engine bay temps will be higher than stock, but if you have a proper CAI which seals off from the engine bay it shouldn't have any effect.
Old 06-26-2015, 11:21 AM
  #7  
Teching In
Thread Starter
 
02AWDAWSDenali's Avatar
 
Join Date: Sep 2014
Location: Alabama
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default

That's the problem, I have the same k&n that dad installed in 2003 when he bought the truck before people sealed them very well.
Old 06-27-2015, 01:57 PM
  #8  
TECH Veteran
iTrader: (30)
 
LS69TA's Avatar
 
Join Date: Jan 2003
Location: Texarkana, Tx
Posts: 4,408
Likes: 0
Received 0 Likes on 0 Posts
Default

Wrap from the rear of the header to the front. That way the overlap is facing rearward and air flowing across the headers doing down the road doesn't try to lift the leading edge and make the wrap start to fray on the edges.
Old 06-27-2015, 11:09 PM
  #9  
Teching In
Thread Starter
 
02AWDAWSDenali's Avatar
 
Join Date: Sep 2014
Location: Alabama
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default

So assuming I buy the 2" and do the 1" overlap, how much do I need? Also what brand and where do I get it?
Old 06-30-2015, 12:49 PM
  #10  
Teching In
Thread Starter
 
02AWDAWSDenali's Avatar
 
Join Date: Sep 2014
Location: Alabama
Posts: 40
Likes: 0
Received 0 Likes on 0 Posts
Default

I was going to remove and replace my header bolts today, and the first bolt I touched broke off with no pressure even applied yet. This is going to be a looooooong day


Quick Reply: Header wrap



All times are GMT -5. The time now is 05:22 PM.