Turbo Manifolds

[jvs007]

hey ppl, jus browsing on ebay and noticed top mount manifolds for sale saying it will fit standard turbo's. i thought standard turbos were low mount ???

can sum body fill me in with sum knowledge pleease

Edited December 11, 2005 by jvs007

[GtstCoupe]

standard is a low mount, but you can go high mount with the whole external wastgate thing but low is good looks kinda more stock if you change turbos they still stay in the same location, as for the ebay high and low manifolds they sean to be pretty crappy quality and dont line up real well with motor and turbo ,a few guys here have used a hish mount and lots of modfications were needed to make it fit, and the stock one presuming you staying with a low mount turbo setup is good for power over 300kw maybe more , i one did see som usa made ones one there and looked of good quaility very similer to the trust one.

moral of the story ,stickwit what ya got

[paulr33]

you wont gain much by fitting a highmount manifold for the stock turbo, other than looks in the engine bay and possibly reliability issues from the crap manifold

[RedDrifter]

I got a xs power lowmount manifold and it was a fairly straight forward to fit.

It changed the note of the engine a little (little smoother) but I dint really notice any power increase to be hournest.

I recon stick with your stock one and if you rewqire more flow get the stock one flowed etc.

[7yphon]

But the stock one looks ugly

[RedDrifter]

But the stock one looks ugly

<{POST_SNAPBACK}>

Yeah I guess it does.(Cast manifold compared to the stainless runners )

[R31Nismoid]

ebay manifolds *shudders*

[RedDrifter]

With the XSpower manifolds I have noticed the top mount ones are made of 321 stainless compaired to the 304 stainless steel the stock mounted ones are made from.

[hanja~13~]

hey guys new to this but was just wondreing wots more benedficial a high or low mounted turbe for power output???

[R31Nismoid]

none

[jvs007]

i thought ppl went high mount jus to fit bigger turboz in which made more power.

didnt think there was enuf room down there for bigger compressors.

[R31Nismoid]

ive seen a TA45 low-mounted.

there is always room

[RedDrifter]

Yeah there is alway room just a pain in the neck to install.

[ebola]

But the stock one looks ugly

<{POST_SNAPBACK}>

so?

and I do believe that there is a potential power difference between hight-mount and low-mount turbos.

hight mount can make more power.

because the speed of the exhaust flow is porportional to the temperature, and there is less time for exhaust heat to bleed out of the manifold on a top mount.

Thats the theory. Though I dont think it makes a difference on any sane (or even semi-sane) budget.

I also THINK that a high mount turbo gives better airflow? or is easier to keep cool or something...

[Guilt-Toy]

Because the turbo is so far away from the head it does give the engine a lower running temp which will allow you to run more advance timing which means extra power yes

So a high mount would allow for a more agressive tune... Thats what I was told =)

so?

and I do believe that there is a potential power difference between hight-mount and low-mount turbos.

hight mount can make more power.

because the speed of the exhaust flow is porportional to the temperature, and there is less time for exhaust heat to bleed out of the manifold on a top mount.

Thats the theory. Though I dont think it makes a difference on any sane (or even semi-sane) budget.

I also THINK that a high mount turbo gives better airflow? or is easier to keep cool or something...

<{POST_SNAPBACK}>

[jvs007]

so does that mean the shiny flashy polished manifolds dont gain power its just to suit the high mount set up ???

[r33_racer]

more or less yes!

i have an xs power one and its ss..its gusseted with webs and supports from all runners and the exhaust flange is also the same..pretty bloudy good for a cheap manifold..only prob was the holes didnt line up..i had to die grind the bitches out to suit.

They reckon manifolds made from steam pipe are better...which is true..cause ss does get brittle after it is exposed to too much heat. where a high tensile pipe like chromemoly would never crack or break. but usually costs an arm and a leg.