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Internal Wastegate Question...

Tebie

By Tebie,
in Engines & Forced Induction

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Tebie Rising Star

Tebie

Posted
Posted

hi all,

i have a gt3076r with a internal wastegate

is it possible to weld the internal wastegate shut and use a external wastegate?

would that work?

would there be any benefits from this?

im just curious, i just want to get the right information because ive been told many different things

thanks

chris

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Well you'll only have benefits if the internal wastegate doesnt work correctly.

If its a proper Garrett housing, then it wont have problems and therefore you do not need one.

It will work, but i dont see the point. But the external gated version if you want it (they are cheaper too for just the turbo as the rear housing has no gate setup on it etc)

dano4127 Veteran

dano4127

Posted
Posted

But he is not going to get any benefits if the internal gate is working perfectly fine

If the turbo is new just take it back to the store and swap it for an external housing then go buy a waste gate

I am running a GT3582 with internal gate and no problems 15psi / 260rwkw

dangerman4 Mentor

dangerman4

Posted
Posted
But he is not going to get any benefits if the internal gate is working perfectly fine

If the turbo is new just take it back to the store and swap it for an external housing then go buy a waste gate

I am running a GT3582 with internal gate and no problems 15psi / 260rwkw

i agree dano

im also running a 3582r-iw at 330 rwkw's at 24 psi with no boost issues

but if the man's convinced on chaning for some reason, dont weld the standard one just change housings.

dano4127 Veteran

dano4127

Posted
Posted
i agree dano

im also running a 3582r-iw at 330 rwkw's at 24 psi with no boost issues

but if the man's convinced on chaning for some reason, dont weld the standard one just change housings.

Nice, I am hoping to push it up to around 20psi next tune to see what it does, what size rear you running?

At the end of the day if I had to go external with my setup I will just weld the gate cause the price of housings from garrett are nuts considering I probably wouldn't be able the sell the IW housing too easily

At this stage I honestly dont see the internal gate being a problem...

dangerman4 Mentor

dangerman4

Posted
Posted
Nice, I am hoping to push it up to around 20psi next tune to see what it does, what size rear you running?

At the end of the day if I had to go external with my setup I will just weld the gate cause the price of housings from garrett are nuts considering I probably wouldn't be able the sell the IW housing too easily

At this stage I honestly dont see the internal gate being a problem...

.82 and mines a auto rb25

Tebie Rising Star

Tebie

Posted
  • Author
Posted

the be 100% honest

the only reason why the though of welding the internal gate shut was because i want a top mount manifold

and every single damn manifold i have come across all are made for external wastegates

so the thought of welding the internal gate shut popped up in my head... :P

dano4127 Veteran

dano4127

Posted
Posted
the be 100% honest

the only reason why the though of welding the internal gate shut was because i want a top mount manifold

and every single damn manifold i have come across all are made for external wastegates

so the thought of welding the internal gate shut popped up in my head... :blink:

you can still run it high mount, Mine is!

Rather than bastardize your turbo just weld a bit of plate over the gate pipe - that's exactly what I have done

dano4127 Veteran

dano4127

Posted
Posted

yeah of course it works!

Will cost you next to nothing if you have the manifold off the car...

Then if one day you feel the need to have an external gate and screamer its just a matter of grinding off the plate and putting an external on.

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

make a plate and bolt it to the manifold, use locktight and use some high temp goo around it to make sure it seals properly.

that way you don thave to take the manifold off if you change your mind

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