Wastegate On The Turbine Housing

[Marsh]

Was wondering if anyone has tried anything like this......

A T3 rear housing could be used with an external waste gate and you get to keep the standard manifold? Giving you a few very good options as far as T3 rears go anyway

Just reading the forum and it looks like most ppl are sort of stuck with T4 .7ar front /standard rear or they go the whole hog with manifold and T4XXXR

How much can the stock fg manifold handle? My guess it would be enough for 80% of the punters

If anyone has any advice or comments I'm all ears

[Ralph Wiggum]

Been done in various incarnations by quite a few people. Problem is waste gate @ 90deg to gas flow like it is in your picture can reduce flow capacity by up to 50% (this figure comes from Turbosmart)

[Marsh]

That was one of the queries I had but looking at some setups from reputable manifold builders I have noticed that most of the time the waste gate has this sort of orientation

This is a 6 boost rb26 manifold w.gate is at 90 deg

Edited 03/05/11 01:20 PM by hiddeous
Quote removed

[Tocchi]

works for me

[Ralph Wiggum]

Not saying wont work, merely that its not the ideal setup. Search through Rap1d´s post and have a look at how he setup his ext on his factory turbo and then gt42

[Marsh]

Any links to his threads?

Tochi have you got any details on who did the work? And if you have had any issues with it at all.

I don't see how your setup differs in theory to the 6 boost manifold, port location is only 30 mm up stream and on the other side of the flange.it has the same angle

[Ralph Wiggum]

Check his forum for threads mate, they arent had too find

[Tocchi]

ovaboost did the wastegate positioning for me.

no issues so far, holds 465rwkw at 25psi.

[Marsh]

holds 465rwkw at 25psi.

Is this on an Xr6t or is it the car in the photo that you have posted earlier?

[messna]

like this ???