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Old 09-21-2011, 07:51 AM   #301
Shaun@ScoobyNet
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Quote:
Originally Posted by blakjak00 View Post
From what I see the LM450 keeps pace in spool up with the VF37, but it just keeps on going. Very nice to see!
The Billet LM400 matches the VF lowdown and then parts company quite early on.

The Billet LM450 isn't quite as good lowdown.

IMO the Billet LM450 is an outstanding turbo that doesn't lose that much down low to the VF, but still manages to give you 450bhp.

For a 2ltr this is pretty outstanding.

If you want to read something for a few hours (lol), have a look at all the documented work done on the car so far: http://bbs.scoobynet.com/projects-40...a-hawkeye.html
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Old 09-22-2011, 07:40 AM   #302
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That lm450 billet looks like the dream twinscroll . Such workmanship .
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Old 09-22-2011, 09:36 PM   #303
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Great stuff, still waiting on USDM 2.5 numbers.
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Old 09-26-2011, 12:34 AM   #304
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Originally Posted by BigRigger View Post
Great stuff, still waiting on USDM 2.5 numbers.
Same here. I've got a VF37 now, and need to resolve a few small issues with my setup. If the blouch 2.5 twin scroll will provide a pretty big gain I may think about sending my turbo out, but I'd want to see back to back WHP graphs on a 2.5 rather than the BHP graphs on the 2.0.
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Old 09-26-2011, 12:41 AM   #305
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My vf36 is on the way out too, I'm not sure I want something bigger or just get a vf34 and swap my housings onto it.

decision time.....
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Old 09-26-2011, 10:55 AM   #306
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Originally Posted by Pinned View Post
Same here. I've got a VF37 now, and need to resolve a few small issues with my setup. If the blouch 2.5 twin scroll will provide a pretty big gain I may think about sending my turbo out, but I'd want to see back to back WHP graphs on a 2.5 rather than the BHP graphs on the 2.0.
Torque should dramatically increase on a 2.5. BHP should also increase for the same level of boost from a 2ltr to 2.5ltr. My figures for the LM450 Billet are based on a boost level of 1.6bar at peak power on a totally standard JDM 2ltr.
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Old 09-26-2011, 11:27 AM   #307
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Originally Posted by Pinned View Post
Same here. I've got a VF37 now, and need to resolve a few small issues with my setup. If the blouch 2.5 twin scroll will provide a pretty big gain I may think about sending my turbo out, but I'd want to see back to back WHP graphs on a 2.5 rather than the BHP graphs on the 2.0.
Torque should dramatically increase on a 2.5. BHP should also increase for the same level of boost from a 2ltr to 2.5ltr. My figures for the LM450 Billet are based on a boost level of 1.6bar at peak power on a totally standard JDM 2ltr.
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Old 09-26-2011, 06:40 PM   #308
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Quote:
Originally Posted by JDwhiteWRX View Post
My vf36 is on the way out too, I'm not sure I want something bigger or just get a vf34 and swap my housings onto it.

decision time.....

didn't know you could just swap housings, that would make for a cost friendly refurbish.
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Old 09-26-2011, 08:42 PM   #309
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Quote:
Originally Posted by Rez1138

didn't know you could just swap housings, that would make for a cost friendly refurbish.
Not sure if this will work or even be worth the hassle.
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Old 09-26-2011, 10:05 PM   #310
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I'm not sure exactly whats involved but the guy who tunes my car told me to do this and has like 30 years experience building suby motors and runs vf36 on his rally car.
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Old 09-26-2011, 10:09 PM   #311
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Quote:
Originally Posted by JDwhiteWRX
I'm not sure exactly whats involved but the guy who tunes my car told me to do this and has like 30 years experience building suby motors and runs vf36 on his rally car.
I think for the cost, you'll be better of sending it to Blouch. I dunno about using a VF34 in a VF36 housing, I'd ask someone who has worked with them.
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Old 09-26-2011, 11:06 PM   #312
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My understanding is the ball bearing vf series turbos are not rebuildable but the rear housings are interchangeable. A vf34 is basically the same as a vf36 with the exception of the twin scroll rear housing (P25). You can put a P20 or P18 housing on a vf36 in 5 minutes by removing the v-band, no reason why you cant swap the P25 housing onto the vf34 and have a vf36.

Also Blouch is a long way from Australia.

Last edited by JDwhiteWRX; 09-27-2011 at 01:25 AM.
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Old 09-27-2011, 07:45 AM   #313
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I believe that they're interchangeable, but I don't believe that once the swap is done, the resulting hybrid is a VF36.

However, I did read that people ran this kind of swaps with no problems and I also believe that the actual differences between misc. VF series are small, in terms of flow and spool.

There is a lot of bad information on the net about the VF series, Especially that VF list of turbos, that was copied and pasted accross the planet on the internet, with IHI never bothering to at least set things straight.
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Old 09-27-2011, 05:02 PM   #314
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Gonna be sending in my vf37 hotside to Blouch in a few days. For the 2.5 XT-R TS
Tune date is set in late November. We'll see how it goes.
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Old 09-27-2011, 05:34 PM   #315
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Quote:
Originally Posted by Vlad
I believe that they're interchangeable, but I don't believe that once the swap is done, the resulting hybrid is a VF36.
Plus the VF36 is a titanium wheel.
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Old 09-27-2011, 06:18 PM   #316
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I plan on checking what the wheel is made of in my dead vf36, I have equipment at work to do this. Actually it would be good to find a dead vf34 and compare the two.
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Old 09-27-2011, 07:15 PM   #317
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Quote:
Originally Posted by JDwhiteWRX
I plan on checking what the wheel is made of in my dead vf36, I have equipment at work to do this. Actually it would be good to find a dead vf34 and compare the two.
If it's a VF36 it's titanium.
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Old 09-27-2011, 07:31 PM   #318
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Quote:
Originally Posted by JDwhiteWRX View Post
I plan on checking what the wheel is made of in my dead vf36, I have equipment at work to do this. Actually it would be good to find a dead vf34 and compare the two.
Please post your findings.

I've looked at the VF series description and I found:
"VF36, the compressor is titanium"... nonsense. This would make it heavier than the alloy it is.
"VF36, the turbine is titanium". I think, if anything, the turbine wheel and shaft are both a Titanium Aluminide.

Hyper has said that the VF36 is not Ti Al, that only the VF42 is.

I've looked at the photos of the VF42 turbine blades, it seems that the oxyde on those is a bit more red than usually on the (I think) Inconel normal aloy.
The VF36 also seems to me to have red-ish turbine blades.

I've asked the question to Forced Performance, they seemed to aggree that Ti Al oxydates a bit more red-ish.
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Old 09-27-2011, 07:40 PM   #319
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I can only measure down to around 0.1 wt% and some alloys do contain trace amounts of certain elements but it should give a good idea of the alloy used.
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Old 09-27-2011, 08:02 PM   #320
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Quote:
Originally Posted by Vlad

Please post your findings.

I've looked at the VF series description and I found:
"VF36, the compressor is titanium"... nonsense. This would make it heavier than the alloy it is.
"VF36, the turbine is titanium". I think, if anything, the turbine wheel and shaft are both a Titanium Aluminide.

Hyper has said that the VF36 is not Ti Al, that only the VF42 is.

I've looked at the photos of the VF42 turbine blades, it seems that the oxyde on those is a bit more red than usually on the (I think) Inconel normal aloy.
The VF36 also seems to me to have red-ish turbine blades.

I've asked the question to Forced Performance, they seemed to aggree that Ti Al oxydates a bit more red-ish.
Subaru's website says the VF36 uses a titanium turbine wheel.
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Old 09-28-2011, 01:39 AM   #321
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I have a VF34 lying around for the sole purpose as a "swap" candidate if my VF36 ever blows. I can say for a fact that the VF52 compressor cover will swap on a VF36 or 37. I'll take my spare VF37 turbine housing and swap it onto my VF34 and let you know the results but from what I have seen, only the center cartridges vary in size. (BB cartridges are smaller than the JB ones) The wheels are for the most part the same. (With the main exceptions being the VF22/40/42 and 46) You can also easily turn a VF52 or VF43 into a VF37. I was talking to someone on here a while back that already did the VF37 turbine housing on a VF39.
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Old 09-28-2011, 01:48 AM   #322
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My next crazy though is this. Can't you overbore the VF37 turbine housing and weld in an inconnel "sleeve" so you could fit a 3076 CHRA in there instead of a 3071. hmmmmm.
(3071 is the largest you can fit in the stock housing)

Vlad,

You mentioned the aftermarket T/S housing you bought was larger? Was there more material around the turbine housing that could be machined over what the stock housing offers?
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Old 09-28-2011, 07:41 AM   #323
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Yes, there is more material.

As far as Subaru's site writing about VF36, do you mean Subaru of Japan, back in the days of the GD upto 2007?
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Old 09-28-2011, 08:08 AM   #324
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Quote:
Originally Posted by Mortal2None
I have a VF34 lying around for the sole purpose as a "swap" candidate if my VF36 ever blows. I can say for a fact that the VF52 compressor cover will swap on a VF36 or 37. I'll take my spare VF37 turbine housing and swap it onto my VF34 and let you know the results but from what I have seen, only the center cartridges vary in size. (BB cartridges are smaller than the JB ones) The wheels are for the most part the same. (With the main exceptions being the VF22/40/42 and 46) You can also easily turn a VF52 or VF43 into a VF37. I was talking to someone on here a while back that already did the VF37 turbine housing on a VF39.
I have done this twice, actually its very common, and the design of the compressor wheel changes over the years which I believe increases flow, but not the actual size
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Old 09-28-2011, 08:33 AM   #325
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Quote:
Originally Posted by Vlad
Yes, there is more material.

As far as Subaru's site writing about VF36, do you mean Subaru of Japan, back in the days of the GD upto 2007?
Yes Subaru of Japan. It was in all of their pr booklets for the Spec C.
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