blown 944

what size is the turbine housing??

Not sure if you are aware but Holset only uses a few sizes of turbine wheels and the non gated housing are very easy to come by

Raceboy

It's 17 cm2. I'm aware of the turbine housings but it doesn't bother me much since it's like that already from the factory.

2bridges

Sid - you have me thinking.

that housing seems ideal for a guy with fab skills (a.k.a. you) to whip up a crossover to try out true "twin scroll"

Flange at turbo end might be a little tricky to keep isolated, but you can do it! I would love to know the yield in this application

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WAIT
suspect headers would have to be 1,3 and 2,4 for this to be of any benefit.
bummner

blown 944

the t3 size holsets may be a little bit difficult but the larger would be pretty easy I think.

funny that you mention this, as I have a T4 .69 ar divided housing sitting on the shelf at my house that is for the same turbine wheel and DP. I also have an old set of headers off my Chevy Luv (way custom, I never could resell, engine was back 8 ") they have quite a few mandrels in them to use.

So all that would really be needed is another t4 flange and some piping

Or I could just get a t3 flange and use the holsets I have 2 of those.

It would be hard to do a direct comparo but I think that comparing the .58 t4 and the .69 t4 divided would be the best route and considering I am most used to that hotside I should be able to tell what it is doing pretty easy. Of course I won't get all "NIZE" or anything , but I feel I could give an honest report.

Problem with all of this is that this is "supposed" to be and stay my DD and I am "supposed" to be getting to work on the light car. It is very reminisent sp? of when I had my 66 prostreet nova and my 69 camaro. The Nova got so out of hand that is was not streetable so I started modding my 69 again and before I knew it they were both out of hand 8 & 9 second street cars Of coarse this time $$ is not the same so I should be able to keep myself in check

blown 944

HMMM those damn headers just saw that. Of coarse what's a little more welding

I have heard that the twin scroll also changes the sound to more of a Boxer 4 sound too??

anyone have a good conversion chart for the cm2 to inches, or to be more precise to a .58 ar using a 2.54 exducer??

2bridges

I feel your pain!

Still working a pro-street 1949 ford coupe - three different drivetrains to date, has yet to make it on the road HAHA.

I just need to figure out how I can retire and still manage to keep the income coming in so I can get caught up on my projects

RPHARRIS

Yea dude, what's going on with the mule?

The Holset looks like a slick setup btw! If you can keep that clutch in one piece for an entire run I think you'll be the next guy in the 11s.