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thermo wrap

ron

By ron,
in Engines & Forced Induction

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Craved Grand Master

Craved

Posted
Posted

yeah this stuff is really good, use it on an HQ race car not on my skyline!! i have HPC coated dump so dont really need it to reduce bonnet temps!!

but if you have stock dump and pod with no CAI then i would definately put in on!!!

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benm Grand Master

benm

Posted
Posted

Every exhaust/mechanic i've spoken too basically said "sure it will help but sure it will reduce the life of your exhaust, expect to replace it within a year depending on how hot things get".

Whilst its good to keep gases on the inside hot it does need to cool down and it can't do that with the thermo wrap.

For a daily driver I wouldn't bother but for a person after every last kw or frequents trackdays i'd do it.

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Busky2k Veteran

Busky2k

Posted
Posted

I dont think wrapping a dump is as detrimental as wrapping headers. Ive had mine wrapped for the last 6 months and they look perfect when I unwrapped em a week ago. No discolouring or anything.

Headers run alot hotter than dump pipes and they are the ones that will suffer more heat fatigue than a dump pipe. Usually a dump pipe runs anywhere from 200-400C cooler than the exhaust manifold, which I definitely dont recommend heat wrapping!!

On the contrary, if your on a track day I would remove it, as the dump would get very hot for a long period of time! A quick boost here and there isnt enough to do any damage IMO.

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Sydneykid Grand Master

Sydneykid

Posted
Posted

Hi guys, we have one dump/engine pipe that is 3 years old and has been wrapped all that time. Looks like new underneath. Having used wrap for 15 years I can't think of one exhaust that has had its life shortened.

But I can sure think of plenty of other things in the engine bay that have died because the exhaust wasn't wrapped. Stuff like bonnet paint, underbonnet heat shielding, TPS sensors, air con wiring and hoses, power steering reservoirs, air con compressors, inner guard paint, throttle cables etc etc

Bottom line, I believe the benefits far outway the negatives.

Hope that helps

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akeenan Grand Master

akeenan

Posted
Posted
...not forgetting that thermo wrapping your dump pipe will dramatically reduce its life down to anything around 6-12mths.

i wrapped mine due to the fact i wasnt impressed with the under bonnet temps when i replaced the standard pipe. that was around 3 months ago... so we'll soon see if it affects the life of my dump pipe. ;)

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Guest RedLineGTR

Guest RedLineGTR

Posted
Posted

there was a thread a while ago...about coating the pipe with some white primer or something spray and then another coat of thermal spray then coating it with the thermal wrap to stop moisture to get the best of the pipe..these were some type of high temp paints..2 coats if i remember correctly..just get a stainless steel pipe or titanium...

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JimX Grand Master

JimX

Posted
Posted

Sydneykid, wouldn't most of the under bonnet heat come from the exhaust manifold and turbo exhaust housing though? Wrapping the dump would help to a certain extent, but I would think that it'd still get pretty hot under there.

Also is this stuff re-usable? How does it attach? I was going to wrap my new dump pipe when I could afford it, but now I'm thinking if I can re-use it, I may as well buy the wrap now and just re-use it when I can afford the dump pipe upgrade.

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Roy Grand Master

Roy

Posted
Posted

Run it thru water first as it makes the tape more pliable, so eases fitting it to countoured pipes. You also should use the clear coat, kind of like a scotchguard (buy it from the same place you buy the tape) and then using hose clapms to stop the tape running. Twines of wire tend to cut into the tape and dont so as good a job of locating it.

As for shortening the life of headers... im not sure, if the turbo's weight is adequately supported then the main cause for cracking of the mainfold would be temperature changes.

So with the tape applied to a manifold, sure it would retain more heat, but also cool much slower, meaning that the red hot steel wont be rapidly air cooled (essentially quenched) making it more brittle. The controlled cooling of the manifold with tape would probably help the life of the manifold?

Any thoughts on that reasoning?

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Jetdat Veteran

Jetdat

Posted
Posted
Originally posted by ron

mmm all interesting respond.  

do we clamp them with hose clamp like what we use for the cooler piping? (or just super glue them:D )

will they work for intercooler pipes too? eg to expel some of the under bonnet heat?

ron

ron

i wouldnt use them on the intercooler pipes...

you however you can use aluminium insulation wrap that air-condition/refrigeration joints use to wrap pipes to keep cool.

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