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looks like I'll be getting another turbo sooner than I originally thought

jlee

jlee

Lifer
pulled/replaced the Forester's exhaust today:
exhaust1.jpg


exhaust2g.jpg


I checked the turbo when the downpipe was off and noticed some sideways and in/out play. I was going to wait 'till spring, but I might take care of this sooner than later just to be safe...anyone selling a VF39? 😀
 
punjabiplaya said:
how much can that bottom end handle? I guess you'd probably have to get built to go much bigger.
Click to expand...

No idea, but the transmissions will start to get unhappy at 375-400hp (so I've heard). My engine is very similar to an 04 STi (with VF39, intercooler and STi exhaust, I could run an STi ECU plug-n-play).

With the stock turbo and an Accessport tune I should be around 285hp/310tq. A VF39 / STi intercooler brings torque up to 323, but the powerband is beautiful..basically 300+tq from 3k to 5k. If I went and got a real tune, I imagine I'd be much better off.

This is my winter driver and my summer backup for if I break the MR2, so I don't want to do anything too crazy.
 
You're really tempting me to open up the 2.3 on my S70 and see what I can get out of the ol' T5. There's a lot of headroom in that little engine. Maybe when I have money again after I'm out of Law School.

ZV
 
Side to side is normal, in and out is usually due to bov/cbv not working like they are suppose to and old clog catalytic converter.
 
Why not just rebuild it?

When I had my Saab 900se (Turbo) I just got a kit from eBay and rebuilt it. Very easy. Hardest [art was getting one ring off and just took it to a trans shop to get it off. I could get it back on.
 
Marlin1975 said:
Why not just rebuild it?

When I had my Saab 900se (Turbo) I just got a kit from eBay and rebuilt it. Very easy. Hardest [art was getting one ring off and just took it to a trans shop to get it off. I could get it back on.
Click to expand...

As far as I am aware they are not rebuildable.

I wish I could help you, I sold my 5,000 mile new VF43 to a friend earlier in the year for damn near nothing, along with my TMIC and injectors/associated crap.
 
RGUN said:
As far as I am aware they are not rebuildable.

I wish I could help you, I sold my 5,000 mile new VF43 to a friend earlier in the year for damn near nothing, along with my TMIC and injectors/associated crap.
Click to expand...

doh! Thanks though!

HarryLui said:
Side to side is normal, in and out is usually due to bov/cbv not working like they are suppose to and old clog catalytic converter.
Click to expand...

This much side to side is not normal. This isn't my only turbo car. 😉
 
RGUN said:
As far as I am aware they are not rebuildable.

I wish I could help you, I sold my 5,000 mile new VF43 to a friend earlier in the year for damn near nothing, along with my TMIC and injectors/associated crap.
Click to expand...


Unless its welded it can be rebuilt.

Here is a refresh kit with bearings for the VF39...

http://cgi.ebay.com/ebaymotors/Turb...ptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

2 x Journal Bearing
1 x Thrust Bearing
1 x Piston Ring (Comp.)
1 x Piston Ring ( Turbine End)
1 x Thrust Flinger
1 x Thrust Washer
1 x shaft nut
3 x screw (Thrust bearing)
4 x screw (Seal plate)
5 x screw (Comp. Housing)
Application
l SUBARU: EJ20 / EJ25 engine : IHI VF30, VF35, VF37, VF39, VF43
 
Marlin1975 said:
Unless its welded it can be rebuilt.

Here is a refresh kit with bearings for the VF39...

http://cgi.ebay.com/ebaymotors/Turb...ptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories

2 x Journal Bearing
1 x Thrust Bearing
1 x Piston Ring (Comp.)
1 x Piston Ring ( Turbine End)
1 x Thrust Flinger
1 x Thrust Washer
1 x shaft nut
3 x screw (Thrust bearing)
4 x screw (Seal plate)
5 x screw (Comp. Housing)
Application
l SUBARU: EJ20 / EJ25 engine : IHI VF30, VF35, VF37, VF39, VF43
Click to expand...

Unless they know something that no one else in the Subaru community knows, then no, IHI turbos are not rebuildable. Now, this may have changed in the time that I have been running a Garrett, but I certainly wouldnt risk my motor with cheap ebay parts. Lets not forget that these things are spinning potentially in excess of 100,000rpm, and any hiccups could take out the motor.
 
Look like you're putting a decat exhaust on there Jlee. The best part is the greater sound you get. I dropped from two cats to one on mine, just so I could pass emission testing without dropping and replacing the exhaust every year.

As for how much power the motor can take, it's pretty much always the trans you need to worry about first, the H4 motors are very strong. They really don't like going lean, though. #2 piston is the favourite for getting hottest first, IIRC.
 
RGUN said:
Unless they know something that no one else in the Subaru community knows, then no, IHI turbos are not rebuildable. Now, this may have changed in the time that I have been running a Garrett, but I certainly wouldnt risk my motor with cheap ebay parts. Lets not forget that these things are spinning potentially in excess of 100,000rpm, and any hiccups could take out the motor.
Click to expand...


They are rebuildable. A simple google search you can find plenty of pics showing the rebuild.
http://www.mx6.com/forums/1g-faq-fo...rhf55-vf39-vf30-turbocharger-rebuild-how.html


And if you think the rpms is what does a turbo in, please stop giving "advice" out as you need to learn how a I.C.E. works first.

I have rebuilt turbos and worked on many turbo cars, let alone owned one. Just because some owners don;t know a lot about cars does not mean what they think it true. There may have been a time when parts were not out there, but as I linked to above they excist now. The only one I see there being issues with is the RHF5HB Ball bearing turbo. I don;t know if there are aftermarket parts out there.
 
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Marlin1975 said:
They are rebuildable. A simple google search you can find plenty of pics showing the rebuild.
http://www.mx6.com/forums/1g-faq-fo...rhf55-vf39-vf30-turbocharger-rebuild-how.html


And if you think the rpms is what does a turbo in, please stop giving "advice" out as you need to learn how a I.C.E. works first.

I have rebuilt turbos and worked on many turbo cars, let alone owned one. Just because some owners don;t know a lot about cars does not mean what they think it true. There may have been a time when parts were not out there, but as I linked to above they excist now. The only one I see there being issues with is the RHF5HB Ball bearing turbo. I don;t know if there are aftermarket parts out there.
Click to expand...

Don't presume my level of knowledge. Did I say that rpm was what does a turbo in? Any imbalance at all in the assembly will not be tolerated at the rpm's demanded by the turbo.
 
DivideBYZero said:
Look like you're putting a decat exhaust on there Jlee. The best part is the greater sound you get. I dropped from two cats to one on mine, just so I could pass emission testing without dropping and replacing the exhaust every year.

As for how much power the motor can take, it's pretty much always the trans you need to worry about first, the H4 motors are very strong. They really don't like going lean, though. #2 piston is the favourite for getting hottest first, IIRC.
Click to expand...

It's catted - just one vs two, though. I also still have the stock up pipe with cat, which will go - not a big fan of the possibility (however remote) of cat pieces getting ingested by the turbo.
 
RGUN said:
Unless they know something that no one else in the Subaru community knows, then no, IHI turbos are not rebuildable. Now, this may have changed in the time that I have been running a Garrett, but I certainly wouldnt risk my motor with cheap ebay parts. Lets not forget that these things are spinning potentially in excess of 100,000rpm, and any hiccups could take out the motor.
Click to expand...


IHI turbos are completely rebuildable.

the bulk of the import community is full of pimple faced 16 year kids who think 300hp is impressive.

I can think of 30 shops off the top of my head that can fix that turbo to better then new specs.
 
jlee said:
I can run a VF39 with an Accessport tune and it is bigger than what I have stock. If I do anything else I'll need to find an AWD dyno and a guy who can tune it.
Click to expand...
Infamous Tuning can do remote road tunes. You buy the cable and use a laptop to data log. They send you a base tune, you run it and datalog. They refine. You get I think up to 7 retunes with the same hardware over a month or so to make sure everything is smoothed out. People have had very good results with them and the price is reasonable.

http://www.infamoustuning.com/

I'll be doing that if I decide to keep my car. It should provide a bit more power and a smoother tune than Cobb.
 
so this is the official turbo thread? 😀
I'm ordering a new Emusa turbo for my cummins tomorrow. I can get a hybrid hx35/40 clone for 330 shipped.
EDIT: pulled the trigger!
 
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fbrdphreak said:
Infamous Tuning can do remote road tunes. You buy the cable and use a laptop to data log. They send you a base tune, you run it and datalog. They refine. You get I think up to 7 retunes with the same hardware over a month or so to make sure everything is smoothed out. People have had very good results with them and the price is reasonable.

http://www.infamoustuning.com/

I'll be doing that if I decide to keep my car. It should provide a bit more power and a smoother tune than Cobb.
Click to expand...

Interesting. A good friend of mine did that with his LGT (but he did the tune himself) - I'm a bit leery of that, seeing as I want someone with a bit more experience doing it..so that might not be a bad idea at all.

ModestGamer said:
IHI turbos are completely rebuildable.

the bulk of the import community is full of pimple faced 16 year kids who think 300hp is impressive.

I can think of 30 shops off the top of my head that can fix that turbo to better then new specs.
Click to expand...

Who said 300hp was impressive? 300whp is about the limit of my transmission, so I don't intend on going much higher than that. It is a daily, and I have an MR2 to break stuff on. 😛
 
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