How hot does a 1*2 exhaust manifold get?

[Gray]

As the title says really...

I know somebody who could get my 182 manifold "heat treated" He applies the same process on after market bike exhaust systems, but were not sure what temp the car would manifold would get too?

So what is the higest temp a 1*2 manifold would reach!?

Cheers guys

 

[Fred@BTM]

quite warm LOL

 

[nath17t]

^^^drive it like you stole it^^^

 

[davebem]

^Cool, I was gonna hazard a guess at about 300c but after seeing that Ive changed my mind.

 

[Jay Payne]

Wow! Thats hot! Guess i need to keep the bulkhead heat shield on mine then, glad i lookd in this thread, was going to bin it.....

 

[Gray]

quite warm LOL

I acutally knew somebody was going to post a picture like that.. How long have you been waiting to post that Fred :rasp:

Is your pic brapping off the limiter in 4th gear for a few hours then haha?

 

[Gray]

^Cool, I was gonna hazard a guess at about 300c but after seeing that Ive changed my mind.

LOL... thats mildly warm :rasp:

 

[ditz]

Wow! Thats hot! Guess i need to keep the bulkhead heat shield on mine then, glad i lookd in this thread, was going to bin it.....

imagine how i feel i've already binned it




tell a lie i've only lost the speedo drive and starter heatsheilds.

hmm

 

[Fred@BTM]

that pic was taken with the car on the dyno, they get upto around 800-900degC at a guess

if you search tinternet try and find the melting temp of stainless

 

[Ali]

^Cool, I was gonna hazard a guess at about 300c but after seeing that Ive changed my mind.

LOL! Alot more than that! The Karts were about 750!!!

 

[Ali]

that pic was taken with the car on the dyno, they get upto around 800-900degC at a guess

if you search tinternet try and find the melting temp of stainless

Closer to the mark i'd imagine.

 

[Gray]

that pic was taken with the car on the dyno, they get upto around 800-900degC at a guess

if you search tinternet try and find the melting temp of stainless

You aint just a pretty face

 

[Mark One]

surely on the dyno it gets hotter because the air isnt rushing past to cool it.

^^ this pic is the reason why MK1 16vs and willys have the duct on the bonnet. Although im not sure how well it works with the rain catcher on there

 

[Frasers Cup]

that pic was taken with the car on the dyno, they get upto around 800-900degC at a guess

if you search tinternet try and find the melting temp of stainless

Closer to the mark i'd imagine.

Why dont you touch it and find out??

 

[Fred@BTM]

yeah it'll be a little hotter on the dyno, but the the manifold still glows when you're pasting it

 

[BenR]

Freds in the right area, with EGT's reaching 800-900 deg the manifold is only going to get that hot with or without air flowing over it.

 

[Gray]

Cheers for the info guys!!

Ben, Fred i f**king love you

 

[Mark One]

T16s glow as much as you like

[YOUTUBE]http://www.youtube.com/watch?v=N7tO4QN8uqw[/YOUTUBE]

 

[BenR]

Turbos utilise the energy in exhaust gas, so they will do lol.

 

[jayxx83]

is it true they can get so hot they become transparent?

 

[BenR]

Depends mostly on a gauge of the manifold, the material and the fuel/spec of the engine. You cant get too hot on most engines as EGT's will just melt the valves, so inconel has to be used. Even so, you wont get truely transparent, it'll just become white hot.

On top fuel nitro burners the EGT's can get so hot that the gasses exiting the stub pipes will disassociate the air and burn its elements.

 

[Fred@BTM]

most of the planet have seen this, but always good
http://youtube.com/watch?v=MqO6tEZdUQ0

 

[ditz]

On top fuel nitro burners the EGT's can get so hot that the gasses exiting the stub pipes will disassociate the air and burn its elements.

keh?


seriously, i didn't get a word of that,, you mean the end of the pipes melt?

 

[ditz]

while you engine guru's are about,, whats going on here
are these secondary injectors or is that how its fueled? like it is in a normal spi setup??
http://www.youtube.com/watch?v=y2iBbwocYZw&NR=1

 

[BenR]

They just run outboard injectors.

For high RPM use they offer better homogenity and cooling effects. You also have packaging issues.

 

[ditz]

so forgive me if im being dumb here, but if you were to run a outboard injector setup and you were to physically cool the fuel say, would that be a way of reducing intake temps?

sorry i love all this lol

 

[BenR]

It is a method employed yes, but people dont normally go through the effort of cooling the fuel itself.

 

[ditz]

i see, must admit i'd never heard of it before, cheers for the explanations

 

[BenR]

Its not used too often as outboard injectors have their own issues with throttle control and low rpm use and part throttle use at low rpm. They are mostly used on the likes of formula engines, superbike engines, dedicated 9000+rpm race engines etc.

On upto 9000rpm use engines they can provide a small benefit, and tend to be run as a secondary set which blends in to take over or add too downstream injectors. I.e post throttle injectors used at sub 6000rpm use and the pre throttle injectors blend in to take over above a set trigger point. In a similar way they can also be used to add to downstream injectors rather than take over completely. That way if it is a high output engine running FI then you can run smaller CC downstream injectors that are better for low fuel demand use where high 1000cc+ injectors can be tricky to control for very short duty cycles at idle and low rpm. It helps clean up throttle response, emissions and provides better low rpm control as homogenity is improved.

 

[Hutchie]

Its not used too often as outboard injectors have their own issues with throttle control and low rpm use and part throttle use at low rpm. They are mostly used on the likes of formula engines, superbike engines, dedicated 9000+rpm race engines etc.

On upto 9000rpm use engines they can provide a small benefit, and tend to be run as a secondary set which blends in to take over or add too downstream injectors. I.e post throttle injectors used at sub 6000rpm use and the pre throttle injectors blend in to take over above a set trigger point. In a similar way they can also be used to add to downstream injectors rather than take over completely. That way if it is a high output engine running FI then you can run smaller CC downstream injectors that are better for low fuel demand use where high 1000cc+ injectors can be tricky to control for very short duty cycles at idle and low rpm. It helps clean up throttle response, emissions and provides better low rpm control as homogenity is improved.

this man is god :hail: