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Chrome on Manifold
Smiley - February 18th, 2011 at 01:13 PM

Hey Vee Dub Heads.


I'm just replacing the 1300 single port manifold off my Baja with a 1500 one (hopefully pick up a half a horsepower or something :lol:)

The 1500 one appears to have been chromed at some stage in it's life (a bit dull now)

I was just wondering if this is going to effect the inlet air temperature at all.
Will the chrome heat the air?
Or will it reflect heat away and give cooler inlet air?

It's no drama for me to pull it off again in the near future and clean it off. Just wanted to know if it's doing anything.



Smiley :cool:

cam070 - February 18th, 2011 at 01:42 PM

Depends if the chrome is on the inside or outside.

If on the outside, it will refect some of the heat, but I'd say it wil make a minimal difference as you are still sucking air from the same place.

Smiley - February 18th, 2011 at 02:23 PM

Quote:
Originally posted by cam070
Depends if the chrome is on the inside or outside.

If on the outside, it will refect some of the heat, but I'd say it wil make a minimal difference as you are still sucking air from the same place.


As far as I can tell it's only on the outside.



Smiley :cool:

Sides - February 18th, 2011 at 02:36 PM

How much wood would a Woodchuck chuck if a Woodchuck could chuck wood ???

:D

Chrome will reflect more heat to some extent and stop it absorbing some... but then since the manifold is shiny it also won't disperse heat as well as if it was matt (shiny objects have less surface area)... so yeah, prolly no definitive since it would vary with the amount ambient heat compared to radiant heat answer !!!

:lol:

(subtitle : stuff knows for sure, but prolly no noticeable difference)

Smiley - February 18th, 2011 at 02:46 PM

Quote:
Originally posted by Sides
How much wood would a Woodchuck chuck if a Woodchuck could chuck wood ???

:D

Chrome will reflect more heat to some extent and stop it absorbing some... but then since the manifold is shiny it also won't disperse heat as well as if it was matt (shiny objects have less surface area)... so yeah, prolly no definitive since it would vary with the amount ambient heat compared to radiant heat answer !!!

:lol:

(subtitle : stuff knows for sure, but prolly no noticeable difference)


Cool man. Thanks for your reply. I was more worried about whether it was going to flamethrower my engine or some thing really bad.


Smiley :cool:

Joel - February 18th, 2011 at 03:11 PM

It will make the best part of sweet FA difference.

I've got 2 identical weber DCN carbs and twinport manifolds that I've had on the same engine.

One manifold is chrome the other is just bare and it makes absolutely no difference.

The charge is moving that quick that it doesnt have time to stop and absorb or shed heat because of whats on the outside of the manifold.