Rb25det Gt3076r Housing Advice.....

[JonnoHR31]

As for those twin scroll turbine housings from ATP , have a look inside them if possible because some people reckon they're a bit dodgy looking . I've no idea who makes them and no ones said they have Garrett markings on them so anyone's guess .

A .

just received myne yesterday. has ATP cast onto the housing so i assume its made by them. some of the machining leaves a little to be desired and the outlet area looks like a choke point but hopefully it'll work a lot better than the IW housing i have at the moment.

some shitty phone pics. thats a 3" v band flange sitting on both sides to give you an idea of the small diameter inside, very different to the garrett housings which are a smooth and progressive opening from the turbine size to the flange size as in the first pic.

Edited August 4, 2010 by JonnoHR31

[wolverine]

More pics higher res pics please and definitely needs to go in the GT30 thread or a new ATP twin scroll thread.

[JonnoHR31]

will see if i can find a better camera round here

[JonnoHR31]

found one. anything in particular you want to see? took shitloads of photos anyway. one more thing i noticed is theres no machined area around the bolt holes for a nut to seat, might have to get into it with the grinder.

http://s224.photobucket.com/albums/dd251/JonnoHR31/turbo/

[Lithium]

Is that a twin scroll internally gated turbine housing?

In regards to other questions asked here, the 1.06a/r T4 twin scroll GT3076Rs spool AWESOME in all the cases I have seen - quicker than the .82a/r T3 housing when used with a proper T4 TS manifold. It'd go very very nicely!

Hell, a GT3582R with a 1.06a/r T4 Twin scroll housing spools similar to a .82a/r T3 GT3076

[JonnoHR31]

na its external t4 1.06. the 3 pics towards the end are the housing i have been using previously which is a t3 IW .82

[wolverine]

Are you are using a HKS cast manifold.

[JonnoHR31]

going to be yes

[juggernaut1]

When your fit the CHRA you might want to check how far the CHRA bolts protrude into the volute. Try and grind them back so they are flush with the inner wall if you can.

This is a tip that Full-Race mentions on their web page with regard to the .78 twin scroll housing....it might apply to the 1.06 housing as well.

Edited August 6, 2010 by juggernaut1

[JonnoHR31]

yer was thinking about that when i noticed the holes are drilled and tapped right past the first passage into the divider. will see how it goes

[Russman]

n regards to other questions asked here, the 1.06a/r T4 twin scroll GT3076Rs spool AWESOME in all the cases I have seen - quicker than the .82a/r T3 housing when used with a proper T4 TS manifold. It'd go very very nicely!

That's good to hear...