Post 690982 by stribo on 2014-02-22 17:47:28
What are the benefits to heat wrapping mate?
Post 690986 by oblark on 2014-02-22 17:59:21
[QUOTE=stribo;690982]What are the benefits to heat wrapping mate?[/QUOTE]
About 25bhp :)
I don`t really know what the benefits are, just that it is a popular mod in the biker world.
Post 690996 by RichT4 on 2014-02-22 18:24:54
Also degrades the life of the exhaust
Post 690997 by Yosser on 2014-02-22 18:25:22
[QUOTE=stribo;690982]What are the benefits to heat wrapping mate?[/QUOTE]
Lower engine bay temperatures plus, in theory, the exhaust gases move faster if they stay hotter.
Some folks say that heat wrapping can cause premature failure of the exhaust though.
FWIW I wrapped my dp too.
Post 691006 by JUDGENINJA on 2014-02-22 18:49:06
Reduces heat in the engine bay, with the intention that the block doesn't soak up the radiated latent heat. This enables cooler intake temperatures.
However retaining heat in exhaust in pipe is a trade off. Reducing life must be one of the consequences of the heat..
When talking of full blown race cars, every thousandth of a second makes all the difference.
Post 691009 by theflyingbrick on 2014-02-22 19:02:45
mines heat wrapped and although im yet to see any real benefits I can say it seems to have reduced the droning noise from the decat!!
Post 691020 by stribo on 2014-02-22 19:27:37
Surely with a stainless system it shouldn't reduce the life by too much.
[QUOTE=theflyingbrick;691009]mines heat wrapped and although im yet to see any real benefits I can say it seems to have reduced the droning noise from the decat!![/QUOTE]
It's probably stopping any resonance in the pipe.
Post 691031 by theflyingbrick on 2014-02-22 20:11:45
[QUOTE=stribo;691020]Surely with a stainless system it shouldn't reduce the life by too much.
It's probably stopping any resonance in the pipe.[/QUOTE]
that's what im thinking........which will allow me to remove another silencer without fear of it killing my ear drums inside the car ;)
Post 691036 by RichT4 on 2014-02-22 20:22:26
I may consider doing this then...
Post 691040 by stribo on 2014-02-22 20:23:21
[QUOTE=theflyingbrick;691031]that's what im thinking........which will allow me to remove another silencer without fear of it killing my ear drums inside the car ;)[/QUOTE]
Lol, so just a straight through pipe for you then? The heat wrap will only stop the resonance from the downpipe, unless you're planning on heat wrapping the whole exhaust.;)
Post 691050 by artfulflounder on 2014-02-22 20:40:43
Alot depends on quality of wrap though.
some is cheaper that you have to seal with high temp spray or newer titanium based stuff which is much better quality.
comes in some great colours too.lol
Post 691059 by theflyingbrick on 2014-02-22 20:53:13
[QUOTE=stribo;691040]Lol, so just a straight through pipe for you then? The heat wrap will only stop the resonance from the downpipe, unless you're planning on heat wrapping the whole exhaust.;)[/QUOTE]
don't be silly.....................itll still have a tiny back box lol
Post 691066 by JUDGENINJA on 2014-02-22 20:58:00
I heat wrapped my previous 850 exhaust.... But it set itself on fire!!!
Post 691069 by oblark on 2014-02-22 21:00:42
[QUOTE=JUDGENINJA;691066]I heat wrapped my previous 850 exhaust.... But it set itself on fire!!![/QUOTE]
That doesn`t surprice me with one of your cars :)
Post 691074 by stribo on 2014-02-22 21:06:28
[QUOTE=theflyingbrick;691059]don't be silly.....................itll still have a tiny back box lol[/QUOTE]
I've heard you've got a tiny back box. :lol:
Post 691075 by stribo on 2014-02-22 21:07:36
[QUOTE=JUDGENINJA;691066]I heat wrapped my previous 850 exhaust.... But it set itself on fire!!![/QUOTE]
But what did you heat wrap it in? toilet paper :P
Post 691076 by RichT4 on 2014-02-22 21:09:47
[QUOTE=stribo;691074]I've heard you've got a tiny back box. :lol:[/QUOTE]
I would've thought that's a good thing, means it's not penetrated!
Are you suggesting you have a large one?
Post 691082 by theflyingbrick on 2014-02-22 21:26:53
hahahaha my back box is as it should be thank you very much :D
Post 691085 by stribo on 2014-02-22 21:43:00
[QUOTE=RichT4;691076]I would've thought that's a good thing, means it's not penetrated!
Are you suggesting you have a large one?[/QUOTE]
Not on the C70 :P The S60R's is somewhat larger. ;)
Post 691091 by graemewelch on 2014-02-22 21:50:27
[QUOTE=stribo;691020]Surely with a stainless system it shouldn't reduce the life by too much.
It's probably stopping any resonance in the pipe.[/QUOTE]
that depends on the grade of stainless.
Post 691094 by Wobbly Dave on 2014-02-22 21:56:57
I soaked my heat wrap in water 1st so that when it dries it tightens up more. I then sprayed it in Cool-it sealant.
[ATTACH=CONFIG]23882[/ATTACH]
Post 691096 by siamblue on 2014-02-22 22:02:49
[QUOTE=graemewelch;691091]that depends on the grade of stainless.[/QUOTE]
Also depends if it is a stainless pipe that has been migged instead of tigged that has been wrapped..even shorter lifespan.
Post 691097 by JUDGENINJA on 2014-02-22 22:08:40
[QUOTE=stribo;691075]But what did you heat wrap it in? toilet paper :P[/QUOTE]
[QUOTE=oblark;691069]That doesn`t surprice me with one of your cars :)[/QUOTE]
Nope it was the proper stuff, but the springy bit of the down pipe sprung a hole and like a flame thrower it cut the stuff in half..
Maybe the experts know a thing or two.
Post 691098 by graemewelch on 2014-02-22 22:08:46
If its been welded with s/s wire the process used will make no difference what so ever.
Post 691358 by jamesy12345 on 2014-02-24 07:18:44
Corrosion under insulation is a big worry on the piping I work with but as Stribo says above, should be no problem on stainless. Unless it's 304 stainless grade and we are talking about Volvo marine engines.....
Decent wrap shouldn't soak water up anyway.
Thanks Oblark very useful I was thinking about wrapping mine also
Post 691365 by Kingsford G on 2014-02-24 08:37:18
Heat wrapping the intake pipes is a good idea but if you have a SS down pipe its a good enough flow so why ruin it.
Post 691367 by jamesy12345 on 2014-02-24 08:53:10
[QUOTE=Kingsford G;691365]Heat wrapping the intake pipes is a good idea but if you have a SS down pipe its a good enough flow so why ruin it.[/QUOTE]
Never thought of wrapping the intake pipes. I would rather leave them open on these cars cos they get a good flow of air. A rear engined car would be different tho
I thought the point of wrapping the down pipe was to stop the heat radiating into the engine bay? I wouldn't wrap the exhaust manifold as I think that would put too much heat back into the cylinder head??
You don`t want to overlap the wrap to much, I overlap it by about 10m/m
Always feed off the bottom of the roll as it is easier to keep the wrap tight.
Once finished fold the end over to stop it from coming apart and I use a stainless jubilee clip to hold the wrap in place.
The wrap can either been done dry or wet. I prefer the to soak the wrap for 10 mins in hot water then wrap the pipe. The advantage of wrapping it wet is when the wrap dries out from the hot exhaust is it will shrink and tighten.
Here`s one I did earlier :)
