Hi All,

I currently own a JDM STI Blobeye and would like to know what Turbo is fitted to these as standard.

I have read its a VF37 but have also read that these are standard on the hawkeyes?!

All help appreciated.

Thanks

 

Vf36 afaik

Edit, sorry you're right vf37 is jdm 2003on

The 36 is on spec c

 

Thanks for that mate!

 

Just whilst there is some knowledge here on Turbos. I had a VF35 on my last STI which was 03. Recently got a bug STI, would it also have a VF35 or what turbo do the Bug STI's have?

 

Uk or JDM?

 

Same yes

 

uk bug sti is a vf35 bud, jdm (i think) is a twin scroll vf36 0r 37. some anoraks will jump in shortly lol.

 

Bugs wouldnt have got twin scroll if i am not mistaken....

 

jdm bugs had vf 34,s as they are roller bearing turbos as opposed to the 35 which is journal bearing. (again i think) lol. as soon as you said that it made sense that they didnt have twin scrolls doh!.

 

What do the VF49 turbo chargers come on as standard and what are they like?

 

from what ive read the vf49 is from the jdm hatchback sti,s. i think its twin scroll also so would be a bit of work to fit on a bug. best upgrade on a bug sti is probably an 18g or 20g maybe a vf43 or an sc 38 from scoobyclinic. there are others as well but those are the ones that spring to mind as im thinking of changing turbo on my bug sti soon.

 

Here is a list of specs I found online.


VF22
This turbo has the highest output potential of all of the IHI VF series turbos and is the best choice for those who are looking for loads of top end power. The top end power however, does not come without a cost. The VF22 spools significantly slower than the rest of the IHI models due to the larger P20 exhaust housing and is much less suited for daily driving than some of the other models. Although the largest VF series turbo, the VF22 is not quite optimal for stroked engines or those who wish to run more than 20PSI of boost.

VF23
This turbo is considered a great all-around turbo. Like the VF22 it utilizes the largest P20 exhaust housing. This housing is mated with a smaller compressor housing of the of the VF24. This turbo is considered optimal in applications with range from mild to slightly wild. It does not have the same top end power of the VF22, but spools up significantly quicker.

VF24
This turbo shares its compressor housing with the VF23 however, this housing is mated with a smaller (P18) exhaust side. The smaller characteristics of this turbo allow it to provide ample bottom end power and quick spool. This turbo is very popular for Imprezas with automatic transmissions and Group N rally cars.

VF28
This turbo came standard on the STi Version 5. In terms of overall size, it is smaller than the VF22, VF30 and VF34, and about same size as the VF23.

VF29
This Turbo is nearly identical to the VF24, with the same compressor and exhaust housings. However the compressor wheel in the VF29 is has been changed slightly. The changes made to the compressor wheel in this model are generally viewed as improvements, and as such this unit is typically chosen over the VF24.

VF30
The VF30 is commonly considered the best bang for the buck turbo in the IHI VF series line. A relatively new model the VF30 features the same exhaust housing as the VF24 but a larger compressor side similar to the VF22. The combination of these two parts results in increased output potential without the lag associated with the VF22. Although it doesn't offer the top end supremacy of the VF22, the VF30 is a great compromise between these unit and the quicker spooling models.

VF34
The VF34 is nearly identical to the VF30, with the same exhaust housing and compressor. However the VF34 goes back to the ball bearing design, and in doing so achieves full boost approximately 500RPM sooner than the comparable VF30. The VF34 is the most recent IHI design and as such costs slightly more than its counterpart. Top end performance and maximum output are identical to the 30.

VF35
VF35 The VF35 has identical internals as the VF30 and it uses divided thrust bearings. However, the exhaust housing is a P15 which means this turbo will have fantastic spool characteristics. This turbo is standard on the new WRX Type RA. LIMITED SUPPLY.

VF36
Roller bearing version of the twin scroll VF37, also has a titanium turbine and shaft for even quicker spool. Same compressor housing as VF30/34, however twin scroll P25 exhaust housing provides slightly better top end output due to reduced exhaust pulse interference. This turbo is good for 400HP and used on JDM STI Spec C from 2003 onwards.

VF37 (thrust bearing)
Enter the age of twin scroll IHI turbos. Same compressor housing as VF30/34, however has a new twin scroll P25 exhaust housing that provides slightly better top end output due to reduced exhaust pulse interference. Twin scroll also provides better spool up for improved low down response over the VF30/34. This turbo is good for 400HP and used on JDM STI from 2003 onwards.

VF38
Twin scroll turbo with titanium turbine and shaft. Smaller compressor housing than VF36/VF37 provides tremendous spool up capabilities but less top end than VF36/37. The spool capabilities of this turbo are demonstrated on the JDM Legacy GT, which reaches peak torque at 2400RPM.

VF39
Single scroll turbo used on USDM STI and latest 2.5L STIs released internationally. Smaller than VF30/VF34.

VF42
Exclusive turbo to the S203/S204 models, this features a twin scroll design with a slightly larger compressor than the VF36/37 turbos and different turbine design (more blades). The VF42 is a roller-bearing turbo and is likely of similar size to the VF22 turbo, but with twin scroll exhaust housing for faster spool and superior top end performance due to reduced exhaust pulse interference.

 

Cheers for the info bustaMOVEs, that is very handy to have.

Need to find out which one of the above I have in the MY03 Fozzy XT. Might be a completely different turbo than what you've listed.

 

Td04

 

Thanks for the replies. It's a UK model

 

Cheers for that!

I have read that on some spec sheets, but was always followed by guys on forums arguing the point, so took it with a pinch of salt.

 

Thanks for all the info!

Very useful :-)