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gcg sell something like your suggesting, can be seen on the uas website in the turbo section!!! that would give you an idea then get someone to build it or maybe gcg will exchange yours for one etc...

link to page

http://www.uniqueautosports.com/pricelists...list_turbos.htm

I actually had the turbosmart ultra gate welded onto my exhaust housing. do a search in this thread for "trust td06 stage 1" and that should bring up a link with some photo's of how it was done, if you cant find them PM me and I will email them to you. This way it can be bolted onto the stock manifold without too much modification, from a flow point of view though you want to get rid of the stock exhaust manifold as its flow is shite.

ive seen that, where an external gate is welded onto the exaust housing.

my only question would be - does it seriously effect the exaust flow?

it makes alot of sense for the flow to follow that snail shape and push the turbine around, but would changing the direction anywhere in that housing reduce flow properties?

just a question out of curiosity

paul is it easy to weld?

a bloke i know told me it couldnt be welded to the manifold cos its cast.... but a turbo yeah?

also who could do it? any good turbo place like AVO or somethin over here in the eastern states? also how much has the guy over there charged to do this (i forget his name now but i read it in ur post from a while ago)

Here is a pic of what i did to mine. I did all the machining work myself then had the block welded to the stcok manifold, this cost over $200 to be done as it needs to be heated then welded then cooled slowly, then it needs to be faces as the manifold distorts because of the heat. If you got someone to do the job for you it would be over 400.

Welding the gate to the housing is ok, but does not work as well, either does modding the stock manifold, i would just get it done propely with a new manifold or buy a diff turbo.

Sorry Clint32, but a wastegate can be too big, they bypass too much exhaust gas, tubine slows and the boost drops so the wastegate closes. Then the boost climbs and they open again. Then they bypass too much exhaust gas, tubine slows and the boost drops so the wastegate closes again. This cycling causes surging as the boost moves around and also wears out the wastegate.

Get the right size is my recommendation.

Originally posted by Sydneykid

Sorry Clint32, but a wastegate can be too big, they bypass too much exhaust gas, tubine slows and the boost drops so the wastegate closes.  Then the boost climbs and they open again.  Then they bypass too much exhaust gas, tubine slows and the boost drops so the wastegate closes again.  This cycling causes surging as the boost moves around and also wears out the wastegate.

Get the right size is my recommendation.

Cool thought something like that would be the case..

What size for a T04E as Kamikaze said? ;)

Originally posted by Clint32

Here is a pic of what i did to mine.  I did all the machining work myself then had the block welded to the stcok manifold, this cost over $200 to be done as it needs to be heated then welded then cooled slowly, then it needs to be faces as the manifold distorts because of the heat.  If you got someone to do the job for you it would be over 400.  

Welding the gate to the housing is ok, but does not work as well, either does modding the stock manifold, i would just get it done propely with a new manifold or buy a diff turbo.

dude that manifold must flow shit coz each runner is a different size?

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