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Author Topic: Muffler temp ?  (Read 3355 times)
Brown-nose
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Posts: 90
« on: March 23, 2009, 19:28:56 pm »
Anyone ever pointed a temperature gun at a turbo muffler ? How hot can they get ?
Thanks
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Tony M
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Posts: 544
« Reply #1 on: March 23, 2009, 20:52:38 pm »
Higher than the gun goes
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Life is too fast to drive a slow VW
Brown-nose
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Posts: 90
« Reply #2 on: March 23, 2009, 22:58:39 pm »
Quote from: RACE HEAD on March 23, 2009, 20:52:38 pm
Higher than the gun goes

hotter than 400 C (750 F)  Huh
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Neil Davies
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Posts: 3438
« Reply #3 on: March 24, 2009, 10:05:31 am »
I know that they're hot enough to burn your leg and leave a nice patch of skin on the muffler... Shocked
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2007cc, 48IDFs, street car. 14.45@93 on pump fuel, treads, muffler and fanbelt. October 2017!
Brown-nose
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Posts: 90
« Reply #4 on: March 24, 2009, 10:19:08 am »
I see Eastwoods do header paint that goes up to 650 C but muffler paint (not for headers,manifolds etc) that withstands up to 150 C
I'm not planning on using either of those but do you guys think those figures are accurate ?
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Hotrodvw
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Posts: 492
« Reply #5 on: March 25, 2009, 06:13:24 am »
Quote from: RACE HEAD on March 23, 2009, 20:52:38 pm
Higher than the gun goes

On the muffler or the head pipe?  I can see the head pipe being up there.......
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Brown-nose
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Posts: 90
« Reply #6 on: March 25, 2009, 08:44:31 am »
Quote from: Hotrodvw on March 25, 2009, 06:13:24 am
Quote from: RACE HEAD on March 23, 2009, 20:52:38 pm
Higher than the gun goes

On the muffler or the head pipe?  I can see the head pipe being up there.......

up where though...?  Huh
i don't have a temp gun or a running car. could someone with both give it a try ? thanks
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Tony M
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Posts: 544
« Reply #7 on: March 26, 2009, 22:14:21 pm »
At the head pipe over 600 deg - at the muffler it will depend on if your at idle or at speed - 350-400 at idle - after running for some time - and hot ,hot,hot when under full throttle
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Life is too fast to drive a slow VW
Brown-nose
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Posts: 90
« Reply #8 on: March 26, 2009, 22:32:44 pm »
Quote from: RACE HEAD on March 26, 2009, 22:14:21 pm
At the head pipe over 600 deg - at the muffler it will depend on if your at idle or at speed - 350-400 at idle - after running for some time - and hot ,hot,hot when under full throttle

thanks for the reply...
when you say head pipe do you mean the header or the pipe that goes into the muffler ?
is this temps you have seen ?
i would have thought temps would drop a lot more at speed due to air-flow under the car reaching the muffler ?
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Brown-nose
Jr. Member
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Posts: 90
« Reply #9 on: March 30, 2009, 16:52:55 pm »
so i borrowed an IR gun today. after 30 mins at 70 mph + i stopped and took some readings. then i went for a long (45 min) slow drive at 40-50 mph with some traffic stops and some idling. the header (1 3/4 stainless) temp was 200-250 C max and the muffler a bit below that. the hottest part of the muffler was the flange. even the pipe into the muffler box was 200 C or under
this was just pulling over and reading it with the car idling.
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