Hey guys,
Getting ready to put the HM9c's on, and I'm wondering what's the best option - Heat Wrap, or ceramic coating?
According to the ceramic coating guys, it's the best.... and cost wise, although more expensive, it doesn't appear to be too much more if it's as good as they say.
Car is street/track use... not a show car. I want to protect the headers, and lower engine bay temps.... and of course more power is always nice!
Are all ceramic coating equal? Each manufacturer claims theirs is best... is there really much difference?
Any recomendations around the Central Coast/ Sydney/ Newcastle?
Thanks,
Exhaust Wrap, or Ceramic Coating for Headers
Started by
_jklumpp_
, Nov 11 2010 08:16 AM
13 replies to this topic
#2
_mumstaxi_
_mumstaxi_
-
- Guests
Posted 11 November 2010 - 09:56 AM
Have had HPC stuff on Turbo cars (turbo exhausts can get friggin hot) and it does work quite well, better looking and heaps less hassle compared to heat wrap, i wouln't be surprised if heat wrap (applied correctly) could last really well and insulate a bit better than HPC simply due to how thick you can wrap it.
The downside is heat wrap can hold moisture and oil etc, it also always seems to end up with loose threads or falling off in places (although this is mostly the bits under the car that get the odd scrape)
Some people suggest heat wraping can retain to much heat in headers etc, the extra heat ends up causing distortion or cracking,but i have not seen this first hand.
MT
The downside is heat wrap can hold moisture and oil etc, it also always seems to end up with loose threads or falling off in places (although this is mostly the bits under the car that get the odd scrape)
Some people suggest heat wraping can retain to much heat in headers etc, the extra heat ends up causing distortion or cracking,but i have not seen this first hand.
MT
#3
_CraigA_
_CraigA_
-
- Guests
Posted 11 November 2010 - 10:13 AM
I have had mine ceramic coated and seems to work OK but not as cool as I thought, and looks good until you use them for a while and they dull off.
What about heat shields?
Jegs have got a header heat shield which I was thinking of buying.
Header Heat Shield
You can also get sheets of heat shield material from ACL and bend these to shape. This ACL stuff seems very a popular method amongst the Group N guys and is sometimes combined with the heat wrap tape.
I've ordered and am waiting on delivery of some Weber heat shields from Pierce Manifolds.
What about heat shields?
Jegs have got a header heat shield which I was thinking of buying.
Header Heat Shield
You can also get sheets of heat shield material from ACL and bend these to shape. This ACL stuff seems very a popular method amongst the Group N guys and is sometimes combined with the heat wrap tape.
I've ordered and am waiting on delivery of some Weber heat shields from Pierce Manifolds.
#4
_Baronvonrort_
_Baronvonrort_
-
- Guests
Posted 12 November 2010 - 01:51 PM
I would use the ceramic coating on piston crowns,combustion chamber in head,exhaust port and also the valves.
I have used the exhaust wrap and it worked well i could hold the extractor tubes without it even coming close to burning my hand it felt warm but that was it.
As for the wrap holding moisture i never saw that things dry out under the bonnet pretty quickly if they get wet EGT could be around 600 deg C so i say thats a myth.
As for it holding oil i think those who have oil leaks should fix them.
I have used the exhaust wrap and it worked well i could hold the extractor tubes without it even coming close to burning my hand it felt warm but that was it.
As for the wrap holding moisture i never saw that things dry out under the bonnet pretty quickly if they get wet EGT could be around 600 deg C so i say thats a myth.
As for it holding oil i think those who have oil leaks should fix them.
#5
_mumstaxi_
_mumstaxi_
-
- Guests
Posted 12 November 2010 - 08:53 PM
IAs for the wrap holding moisture i never saw that things dry out under the bonnet pretty quickly if they get wet EGT could be around 600 deg C so i say thats a myth.
As for it holding oil i think those who have oil leaks should fix them.
He-he true, but if you do work on the the car, and say have rocker covers off, and you could drip oil or just spill oil on the exhaust when filling etc by accident (i know ive done this), the wrap will absorb the oil, you can't just wipe it off, then when you run the engine it smokes like a bar-stud for ages, if this happens at the track i doubt they would let you race.
The heat wrap will also absorb radiator water or fuel etc, ive removed heat wrap from lower exhaust pipe work (at gearbox level) and found the pipe underneath had gone very rusty compared to the rest of the pipework, i know these things are all "what if's" but just making JK aware of what ive had happen in the past, may not ever happen to anyone else ?
but at leat ive passed on the infoMT
#6
gtrboyy
-
- Members
-
- 3,214 posts
Lotsa Posts!
- Location:SYDNEY,NSW
- Joined: 07-November 05
Posted 13 November 2010 - 08:07 AM
The heatwrap works well & makes a difference from when I used them on my old 202 extractors for about 4yrs,I wasn't worried about rusting out those extractors as they were fairly old & when pulled em' out they were pretty rusty from all the water/oil/moisture that had got onto them after the 4 years of use.I did it to cool down the engine & so it would stop melting wiring lol.
This was before ceramic coatin had become commonly available in Sydney,worse thing is they make you scratch like a mofo & smoke up hard when you spill crap on it..
I'd try ceramic coating & a heat shield first,then if your not happy heat wrap the top half under the cabies down to the starter motor.
Try www.procoat.com.au
This was before ceramic coatin had become commonly available in Sydney,worse thing is they make you scratch like a mofo & smoke up hard when you spill crap on it..
I'd try ceramic coating & a heat shield first,then if your not happy heat wrap the top half under the cabies down to the starter motor.
Try www.procoat.com.au
Edited by gtrboyy, 13 November 2010 - 08:11 AM.
#7
_Bomber Watson_
_Bomber Watson_
-
- Guests
Posted 13 November 2010 - 03:34 PM
Has anyone used Heatwrap over ceramic coating???
Just considering it for my Harley, looking at making an exhaust for it, getting it ceramic coated black then heat wrapping the bits my leg touches/are close to my ass.....
Will also break up the black a bit....Dont mind if i have to replace it every now and again if it gets ratty looking.
Cheers.
Just considering it for my Harley, looking at making an exhaust for it, getting it ceramic coated black then heat wrapping the bits my leg touches/are close to my ass.....
Will also break up the black a bit....Dont mind if i have to replace it every now and again if it gets ratty looking.
Cheers.
Edited by Bomber Watson, 13 November 2010 - 03:35 PM.
#8
ls2lxhatch
-
- Members
-
- 5,332 posts
- Location:Perth
- Car:LX Hatch
- Joined: 29-May 06
Posted 13 November 2010 - 04:50 PM
It is common for header manufacturers to specify that thermal wrapping will void the warranty. It may be that the higher temperatures result in premature failure of the headers or it could be that the wrap increases corrosion. Running LPG also voids header warranty so I suspect heat is a factor.
HM Headers Warranty
The ceramic coating is applied to both the inside and outside of the headers so it should reduce the operating temperature of the headers as well as the amount of heat radiated from the headers.
HM Headers Warranty
The ceramic coating is applied to both the inside and outside of the headers so it should reduce the operating temperature of the headers as well as the amount of heat radiated from the headers.
#9
xu1kid
-
- Members
-
- 364 posts
Forum Fan
- Name:anthony
- Location:Albury
- Car:lj gtr xu1
- Joined: 30-December 08
Posted 13 November 2010 - 09:20 PM
if you want engine bay temp down dramaticly go heat wrap cooler eng bay and not hot to touch, ceramic coating holds the heat in the metal more than standard but the bay still gets hot and are still hot to touch, i know il be wrapping my extractors when i finally build my motor
#10
rexy
-
- Members
-
- 3,740 posts
Lotsa Posts!
- Name:Rexy
- Location:Melbourne
- Car:Kia grand carnival!!!
- Joined: 03-November 09
Posted 14 November 2010 - 04:22 PM
The wrap works well but looks a bit crap (even when painted) and tends to come lose slowly if you are not careful or it snags on something. Keeps the pipes externally colder than the ceramic coat I have on the car now. I could touch the tape surface but no way can I touch the ceramic coat. The tape was able to leave an imprint on the pipes so I guess they retained enough heat to soften the steel and remould it! Nothing cracked in 8 years of tape use.
#11
orangeLJ
-
- Members
-
- 10,261 posts
Yes, yes I do post alot!
- Joined: 02-May 06
Posted 15 November 2010 - 09:22 AM
As andy said, heatwrap voids most manufacturers warranty.
There is a place at Berkeley Vale-
http://www.procoat.com.au/
owned by mark sullivan (sully) that built 1badHK and 1badHQ
for a set of extractors it would only be like $150, mine were done by HPC in VIC like 5 years ago, they have gone dull, but still do the job.
Just dont try and touch them when hot, they dont feel that hot until your finger touches them!
There is a place at Berkeley Vale-
http://www.procoat.com.au/
owned by mark sullivan (sully) that built 1badHK and 1badHQ
for a set of extractors it would only be like $150, mine were done by HPC in VIC like 5 years ago, they have gone dull, but still do the job.
Just dont try and touch them when hot, they dont feel that hot until your finger touches them!
#12
_2ELCS_
_2ELCS_
-
- Guests
Posted 15 November 2010 - 05:46 PM
^^^^That sounds like the voice of experience????
#13
_JNR_ATE_
_JNR_ATE_
-
- Guests
Posted 15 November 2010 - 08:38 PM
Couldnt say a bad thing about HPC in vic, they picked up my pipes and dropped off. faded a bit after a while but they recommended dipping twice if i wanted them staying shiny.
Pipes cooled down within minutes of car turning off. definately getting the HG pipes done and the inlet manifold is going in aswell.
Cheers
JNR_ATE
Pipes cooled down within minutes of car turning off. definately getting the HG pipes done and the inlet manifold is going in aswell.
Cheers
JNR_ATE
#14
orangeLJ
-
- Members
-
- 10,261 posts
Yes, yes I do post alot!
- Joined: 02-May 06
Posted 16 November 2010 - 11:51 AM
^^^^That sounds like the voice of experience????
hahaha, many times wayne!
First time I had them on the car, thought "wow, im like 1mm from the pipes and it doesnt feel hot!"
I moved the back of my hand that 1mm closer...... ouch.
And then you would remember the lovely burns I copped on the day of our last christmas cruise! Hand slipped while pushing the carby linkages, fingers straight onto the pipes.... definitely burns!
1 user(s) are reading this topic
0 members, 1 guests, 0 anonymous users
