FiftyOne Bronze Donating Members 1,145 Member For: 11y 7m 25d Gender: Male Posted 29/07/14 02:10 PM Share Posted 29/07/14 02:10 PM Just looks like a matte black pipe, but I'll get something for tomorrow Link to comment Share on other sites More sharing options...
"Captain Retard" Member 1,417 Member For: 10y 9m 24d Gender: Male Location: Shellharbour NSW Posted 29/07/14 02:11 PM Share Posted 29/07/14 02:11 PM My experience with using heat wrap is that it will transfer the heat further along the pipe.So what I'm saying is if you wrap the dump pipe then where ever the wrap finishes will be a fair bit hotter. So just make sure there's nothing close to the pipe where the wrap finishes as the heat that radiates off the pipe at that spot can be quiet extreme. 1 Link to comment Share on other sites More sharing options...
shaunjennifer21 Member 95 Member For: 13y 7m 24d Posted 30/07/14 11:18 AM Author Share Posted 30/07/14 11:18 AM looks like ill probably just heat wrap it 1 Link to comment Share on other sites More sharing options...
FGMKII Member 193 Member For: 11y 1m 16d Gender: Male Location: Western Sydney Posted 10/08/14 04:05 AM Share Posted 10/08/14 04:05 AM I heat wrapped my dump/front pipe on my 31 coupe. Where the turbo is (low mount), you can barfly see the wrapped dump pipe anyway. Has been on for about a year, one track day and a couple of drag nights at WSID and so far so good. Noticed a change on the temp gauge on the track. Had some higher temps towards the end of a track day before heat wrap and temps stayed where they should after. Did not do back to back runs so no idea if it did anything performance wise on a dyno but lower temps are always good. If I go high mount at any stage and redo the exhaust I will spend the extra and have it coated. Link to comment Share on other sites More sharing options...
Joorsh New Member 14 Member For: 17y 5m 1d Gender: Male Posted 12/08/14 03:57 AM Share Posted 12/08/14 03:57 AM (edited) I know this is a bit of a late reply, but I think there's some good arguments both for and against heat-wrapping.As far as I can tell the pro's are:It considerably lowers engine bay temps (especially when combined with a turbo beanie). Most of the data I've seen shows that it's actually more effective than performance coating in terms of insulation and heat transference.It's cheap and easy to do.It helps get the cat up to operating temp faster because it directly transfers more of the heat faster down the pipe.As for the cons:If you have any sort of oil leaks the heat-wrap can absorb the oil and then potentially start a fire.It can transfer excessive heat further down the exhaust (depending how far you heat-wrap and what is down there). I've heard stories of hand-brake levers and interior carpet melting from super-hot exhausts, but never actually seen this myself.As mentioned already, it can lead to cracked welds and pipes. I have actually seen this first hand - I had a stainless heat-wrapped dump pipe on one of my cars crack, but it was also revealed that the pipe probably wouldn't have cracked if thicker/better quality stainless was used.For my money, if you want a budget option and you have a well maintained car (no oil leaks) then heat wrapping is an acceptable thing to do. But if you can afford it, a good performance/ceramic coating is probably a better option. Even though the coating may be slightly less effective thermally, it's only a marginal difference and the safety/reliability benefits outweigh the efficiency loss. Edited 12/08/14 03:59 AM by Joorsh 1 Link to comment Share on other sites More sharing options...
rednose RNS10S Donating Members 2,229 Member For: 18y 6m 10d Gender: Male Posted 13/08/14 07:24 AM Share Posted 13/08/14 07:24 AM Why not do both?Coat and then wrap 1 Link to comment Share on other sites More sharing options...
FiftyOne Bronze Donating Members 1,145 Member For: 11y 7m 25d Gender: Male Posted 13/08/14 09:47 AM Share Posted 13/08/14 09:47 AM Cause why? Gets a little redundant Link to comment Share on other sites More sharing options...
Joorsh New Member 14 Member For: 17y 5m 1d Gender: Male Posted 14/08/14 01:38 AM Share Posted 14/08/14 01:38 AM I took an M3 for a run around Wakefield Park that had both ceramic coated headers + heat wrap. The guy who owned the car swore by it, and after 3 laps at full noise I was able to touch the exhaust manifold with my bare fingers (albeit briefly). It certainly did an excellent job keeping heat out of the engine bay. As to how much better than just heat-wrapping (or using two layers of heat wrap) it was, I have no idea. There are certainly folks out there that do it though. 1 Link to comment Share on other sites More sharing options...
FiftyOne Bronze Donating Members 1,145 Member For: 11y 7m 25d Gender: Male Posted 14/08/14 10:51 AM Share Posted 14/08/14 10:51 AM Thinking the cat would be getting a massive wack of heat. Couldn't be great for it's life woulnd't think Link to comment Share on other sites More sharing options...
jimmixr Donating Members 686 Member For: 14y 6m 8d Posted 14/08/14 12:34 PM Share Posted 14/08/14 12:34 PM Cats are more efficient when theyre hotter..technically.Ive coated and wrapped my dump...Initially Id wrapped it.. under bonnet heat was cut dramatically. Then dump was off with a turbo upgrade, decided to get exhaust manifold, turbo exhaust housing and dump heat coated,,, All back together and noticed more heat under the bonnet and there was no way you could touch any of it without taking acouple of layers of skin off..Re-wrapped the dump and temps went down again. Repeated pulls on the dyno and you can hold the dump... That's got to be good in my bookHeat re-tension is energy kept in the system basically.. scavenging and exhaust speed.. 4 Link to comment Share on other sites More sharing options...
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