Heat wrap - v8 Miata Forum - Home of the v8 Miata Conversion

V8 Miata Exhaust Air In/Air Out...This area focuses on allowing your V8 Miata to exhale in the most efficient and acoustically pleasing manner possible.

Heat wrap

Old 08-06-2015, 12:36 AM
  #1  
V8 Miata Protégé
Thread Starter
 
Join Date: Mar 2014
Location: SW Ont.
Posts: 524
Thanks: 0
Thanked 18 Times in 17 Posts
Default Heat wrap

My exhaust is nearly done, and I'm considering wrapping the whole length of the system with DEI 2" titanium heat wrap. Good idea? Headers are already in place so I won't be doing them.
MX-Brad is offline  
Old 08-06-2015, 07:04 AM
  #2  
V8 Miata Participant
 
Join Date: Mar 2012
Location: Greenville, SC
Posts: 304
Thanks: 0
Thanked 15 Times in 15 Posts
Default

Originally Posted by MX-Brad View Post
My exhaust is nearly done, and I'm considering wrapping the whole length of the system with DEI 2" titanium heat wrap. Good idea? Headers are already in place so I won't be doing them.
DEI works well, but holds in the moisture leading to premature deterioration.


Have you thought about a Jethot (ceramic) style coating instead?


Bill S.
mrmustang is offline  
Old 08-06-2015, 04:28 PM
  #3  
V8 Miata Fanatic
 
Gator Bait's Avatar
 
Join Date: Jul 2014
Location: DFW, TX
Posts: 642
Thanked 24 Times in 23 Posts
Default

Originally Posted by mrmustang View Post
DEI works well, but holds in the moisture leading to premature deterioration.
Bill S.
I've heard the moisture thing b4, but confounds me how unless it gets wet just b4 shut down. Between the sealant and the heat evaporation I don't see how moisture has a chance.
Gator Bait is offline  
Old 08-08-2015, 07:52 PM
  #4  
V8 Miata Participant
 
ItsAllRigged's Avatar
 
Join Date: Sep 2014
Location: Central Florida
Posts: 256
Thanked 23 Times in 17 Posts
Default

I think a few factors play into it. Living in FL, we have a super low dew point with very high humidity. Just sitting in the garage things get moist. But I agree with you that while youre driving is probably not the time its corroding.
ItsAllRigged is offline  
Old 08-09-2015, 08:34 AM
  #5  
V8 Miata Participant
 
5.0MX5's Avatar
 
Join Date: Jan 2010
Posts: 258
Thanked 10 Times in 10 Posts
Default

I wrapped the 4" exhaust on my 95 Dodge Cummins truck from the turbo to the rear axle back in about 2000. No rust issues. On the Miata I did the headers and the exhaust pipes to the xpipe behind the transmission about 4 years ago, again no rust issues. Me thinks the rust issue is more an urban myth than anything. I can see how Florida's high humidity may change things on a vehicle not driven frequently though.
5.0MX5 is offline  
Old 08-09-2015, 10:52 AM
  #6  
V8 Miata Fanatic
 
Gator Bait's Avatar
 
Join Date: Jul 2014
Location: DFW, TX
Posts: 642
Thanked 24 Times in 23 Posts
Default

Originally Posted by 5.0MX5 View Post
Me thinks the rust issue is more an urban myth than anything.
Or no longer an issue with modern alloys?

All the headers I've wrapped were stainless steel and I used the pre-wrap prep paint, then followed up with the sealant paint over the wrap. ...then again...I've never kept a toy over 2 years and they are always fair weather toys unless I just plain got unlucky on a ride/drive.
Gator Bait is offline  
Old 08-09-2015, 11:24 AM
  #7  
V8 Miata Participant
 
Join Date: Mar 2012
Location: Greenville, SC
Posts: 304
Thanks: 0
Thanked 15 Times in 15 Posts
Default

Originally Posted by 5.0MX5 View Post
I wrapped the 4" exhaust on my 95 Dodge Cummins truck from the turbo to the rear axle back in about 2000. No rust issues. On the Miata I did the headers and the exhaust pipes to the xpipe behind the transmission about 4 years ago, again no rust issues. Me thinks the rust issue is more an urban myth than anything. I can see how Florida's high humidity may change things on a vehicle not driven frequently though.
Geographically speaking, if you live in an area with radical temperature changes over the course of the year (say NJ/PA/NY/CT/Ohio/etc), where you can be at 4 degrees one week and 50 degrees the next, and your vehicle is in an unheated garage, then the moisture in the air is attracted to all surfaces. Or worse yet, gets wicked up through your concrete floor and attaches itself to the underside of your vehicle surfaces. No myth, actual fact. Same goes for areas like Florida and coastal areas where the humidity levels change hour to hour, sometimes by as much as 60%.

Just some additional information from someone who experienced such things first hand.

Bill S.
mrmustang is offline  
Old 08-10-2015, 09:51 PM
  #8  
V8 Miata Fan
 
Join Date: Oct 2013
Posts: 73
Thanked 18 Times in 15 Posts
Default

Wrapped my motorcycle exhaust about 10 years ago, kept my leg from getting burned, but I rode from march till november in NYC in all weather and the pipes lasted 4 years. They didnt fall apart but they were flaking rust everywhere when i took it off. It was mild steel, painted and wrapped.
Richharr is offline  
Old 08-11-2015, 09:38 AM
  #9  
V8 Miata Protégé
Thread Starter
 
Join Date: Mar 2014
Location: SW Ont.
Posts: 524
Thanks: 0
Thanked 18 Times in 17 Posts
Default

Ya, I'm going to pass on this idea. I'm in SW Ontario and we have wild changes in weather and humidity. Maybe I'll just go with some heat paint, and some clamp on heat shields.
MX-Brad is offline  
Old 08-12-2015, 01:53 PM
  #10  
Jim Stainer
 
charchri4's Avatar
 
Join Date: Jul 2011
Location: Sunny SW Minnesota
Posts: 2,462
Thanked 56 Times in 50 Posts
Default

The only place you really need it is under your feet and under the gas tank.
charchri4 is offline  
Old 08-12-2015, 07:56 PM
  #11  
V8 Miata Protégé
 
Join Date: Nov 2014
Location: South FL
Posts: 483
Thanked 36 Times in 32 Posts
Default

Check out this post, what about something like this? https://www.v8miata.net/general-moto...lina-794/page9
SupaDupaSteve is offline  
Old 08-12-2015, 11:13 PM
  #12  
V8 Miata Protégé
 
ToySnakePMC's Avatar
 
Join Date: Oct 2012
Location: Fuquay Varina, NC
Posts: 496
Thanked 30 Times in 28 Posts
Default

I really do like that stand-off exhaust insulator that I installed when I first finished the swap. Car interior stays comfortable and I've never had any fuel tank pressure problems that others have described in the past. Perhaps the best results for 12 min worth of work under the car.
ToySnakePMC is offline  
Old 08-12-2015, 11:29 PM
  #13  
V8 Miata Protégé
Thread Starter
 
Join Date: Mar 2014
Location: SW Ont.
Posts: 524
Thanks: 0
Thanked 18 Times in 17 Posts
Default

Ima do it.
MX-Brad is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MX-Brad
V8 Miata Engines
4
10-17-2014 08:24 AM
MRM331
V8 Miata Wiring, Electrical, and ECUs
21
10-08-2014 05:51 PM
mbrottler
V8 Miata Safety, Legal, & Emissions
3
05-17-2013 03:44 PM
johnd
Introductions
1
09-23-2012 04:46 AM
chpmnsws6
Parts For Sale
0
06-26-2010 03:24 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Heat wrap


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.