Notices
944 Turbo and Turbo-S Forum 1982-1991
Sponsored by:
Sponsored by: Clore Automotive

Wrapping the exhaust headers?

Thread Tools
 
Search this Thread
 
Old 08-10-2005, 02:37 PM
  #16  
theedge
Addict
Rennlist Member
 
theedge's Avatar
 
Join Date: Aug 2003
Location: Canada, Eh?
Posts: 14,242
Likes: 0
Received 3 Likes on 3 Posts
Default

Why not ceramic coat it all?
Old 08-10-2005, 02:39 PM
  #17  
reno808
Rennlist Member
 
reno808's Avatar
 
Join Date: Mar 2005
Location: In the garage trying to keep boost down
Posts: 8,809
Likes: 0
Received 0 Likes on 0 Posts
Default

yeah do it. 1 its going to give you less engine bay temps and 2nd it will allow you to spoll up faster.
Old 08-10-2005, 06:37 PM
  #18  
Epic2112
Addict
Rennlist Member

 
Epic2112's Avatar
 
Join Date: Jul 2003
Location: Silver Spring, MD
Posts: 3,879
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by streckfu's951
Actually, its velocity not volume that the concern. As your exhaust gas moves through the pipes, it cools and slows down which creates back pressure. If you can keep your exhaust gas hotter for longer, it will maintain a higher velocity and reduce backpressure.
That's more or less what I said. As the exhaust gasses cool they contract. Since they take up less volume, they don't need to travel as fast.
Old 08-10-2005, 06:46 PM
  #19  
streckfu's
Rennlist Member
Thread Starter
 
streckfu's's Avatar
 
Join Date: Jul 2002
Posts: 77,321
Received 668 Likes on 448 Posts
Default

Originally Posted by Epic2112
That's more or less what I said. As the exhaust gasses cool they contract. Since they take up less volume, they don't need to travel as fast.

Gotcha.
Old 08-11-2005, 02:45 AM
  #20  
ftanguay
Racer
 
ftanguay's Avatar
 
Join Date: Jan 2003
Location: Québec, Canada
Posts: 325
Likes: 0
Received 0 Likes on 0 Posts
Default

IF you want the best... put asbestos wrap! NOTHING is more efficient (but be carefull when installing, try not to inhalate too much...if possible)

PS: I always like the flame that will come after that ; )
Old 08-11-2005, 07:57 AM
  #21  
special tool
Banned
 
special tool's Avatar
 
Join Date: Apr 2002
Location: limbo....
Posts: 8,599
Likes: 0
Received 1 Like on 1 Post
Default

fatangay - link for asbestos wrap?
Old 08-12-2005, 02:21 AM
  #22  
ftanguay
Racer
 
ftanguay's Avatar
 
Join Date: Jan 2003
Location: Québec, Canada
Posts: 325
Likes: 0
Received 0 Likes on 0 Posts
Default

I may have found a trail of a company who make fire blanket (100% asbestos). As soon as I get detail I can PM you.
Old 08-12-2005, 04:03 PM
  #23  
toddk911
Drive-by provocation guy
Rennlist Member
 
toddk911's Avatar
 
Join Date: Apr 2002
Location: NAS PAX River, by way of Orlando
Posts: 10,439
Likes: 0
Received 0 Likes on 0 Posts
Default

I had ceraminc coating done. Prety good rates, and helps seal and small exhaust leaks.

www.hyperkote.com

This palce also onw can coat internal engine parts.

I went with ceramic as opposed to wrapping as I was shown before and after temp drop results on the headers. Was like 200+ degree drop.

This shop also has heat dispersing coatings as well. For IC or intake, etc.
Old 08-12-2005, 04:13 PM
  #24  
Mike Murcia
Three Wheelin'
 
Mike Murcia's Avatar
 
Join Date: Apr 2002
Location: Northern IL
Posts: 1,556
Received 7 Likes on 5 Posts
Default

I'm surprised nobody has chimed in about the inner wall of the exhaust pipes collapsing due to the greater heat.
Old 08-12-2005, 05:12 PM
  #25  
streckfu's
Rennlist Member
Thread Starter
 
streckfu's's Avatar
 
Join Date: Jul 2002
Posts: 77,321
Received 668 Likes on 448 Posts
Default

Originally Posted by Mike Murcia
I'm surprised nobody has chimed in about the inner wall of the exhaust pipes collapsing due to the greater heat.

I never heard of this happening to the exhaust manifold; only the turbine to exhaust pipe.
Old 08-12-2005, 05:20 PM
  #26  
Mike Murcia
Three Wheelin'
 
Mike Murcia's Avatar
 
Join Date: Apr 2002
Location: Northern IL
Posts: 1,556
Received 7 Likes on 5 Posts
Default

Right, but the hotter the temps are to the turbo, the hotter the temps will be after the turbo. Don't get me wrong. I've got my headers wrapped all the way up to the turbine, so I'm obviously not too concerned. It's just an argument some have made in the past.
Old 08-12-2005, 05:27 PM
  #27  
streckfu's
Rennlist Member
Thread Starter
 
streckfu's's Avatar
 
Join Date: Jul 2002
Posts: 77,321
Received 668 Likes on 448 Posts
Default

I never thought of that as I have a test pipe and removed the affected pipe (it was collapsed) but for those with stock systems, it is well worth bringing up.
Old 08-12-2005, 06:51 PM
  #28  
Dilberto
Drifting
 
Dilberto's Avatar
 
Join Date: Jul 2004
Location: Palm Desert, California
Posts: 2,543
Received 50 Likes on 44 Posts
Default Anyone Make an Expandable Crossover Pipe?

I see alot of those "Imports" have nice GReddy stainless, with cross-hatched expansion joints. Who can weld like other?
Old 08-12-2005, 07:40 PM
  #29  
Mike Murcia
Three Wheelin'
 
Mike Murcia's Avatar
 
Join Date: Apr 2002
Location: Northern IL
Posts: 1,556
Received 7 Likes on 5 Posts
Default

Originally Posted by streckfu's951
I never thought of that as I have a test pipe and removed the affected pipe (it was collapsed).
Yeah, I need to get a test pipe.
Old 08-12-2005, 09:43 PM
  #30  
Crazy Eddie

Rennlist Member

 
Crazy Eddie's Avatar
 
Join Date: Feb 2004
Location: Los Altos, CA
Posts: 6,985
Received 69 Likes on 52 Posts
Default

I personally would, and did, go with Jet Hot Sterling, both in and out
I did this because there are a number of guys on this board that I respect and that are very knowledge
that used Jet Hot also
It is a ceramic coating not as heavy as Swain ( I didn't want to remove my heat shields & the swain looks like a mummy )
I will dig up a jpeg of it and post
It also is very reasonable ... I paid like 100 bucks Which is pretty cheap
As for who to ask for at Jet Hot, Matt is the guy who helped me he is a
great guy.
Regards
Ed
Attached Images   

Last edited by Crazy Eddie; 08-12-2005 at 11:09 PM.


Quick Reply: Wrapping the exhaust headers?



All times are GMT -3. The time now is 03:03 PM.