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Old 05-01-2020, 12:50 PM   #851
WRXnick16
Scooby Specialist
 
Member#: 447898
Join Date: May 2016
Chapter/Region: BAIC
Location: W Sac, CA
Vehicle:
2016 WRX (traded)
2019 STI CWP

Default

Quote:
Originally Posted by az06wrx View Post
Hmm, maybe you're correct after all

https://forums.nasioc.com/forums/sho...&postcount=519

Quote:
Originally Posted by charlesholmes33 View Post
Amazing thread and resource. To the OP

IHI VF56
Very similar to the VF42 model in terms of spool and capacity, the VF56 is a roller-bearing turbo and is similar in size to the VF42 turbo, but the twin-scroll exhaust housing is even a little larger still and yields faster spool-up and a superior top-end. The VF56 can be found on the R205 and the S206

FYI: The VF42 is also the turbo they used on the Legacy S402.
The post that you referenced is slightly inaccurate.

The Legacy STI S402 used the very rare VF51. This turbo isn't even documented on most of the common online Subaru IHI turbo lists. The VF51 was exclusive to the S402 with only 402 units made. It has a 9 blade turbine wheel and 6+6 straight blade profile compressor wheel.

VF51
RHF5H
14411AA790





The VF42 (144114S000) was used exclusively on the S203 & S204 (~1155 units). This turbo featured a larger diameter (48.5mm) 6+6 compressor wheel, 9 blade turbine wheel (instead of 11), twin scroll P25 turbine housing, and RHF5HB ball bearing CHRA.

The VF56 was exclusively used on the R205 (400 units).

The VF58 was used on the S206, S207, S208 & Type RA-R. This is the best turbo that IHI ever made for Subaru. It may not be the rarest, but it's the most sought after and nearly impossible to purchase a replacement.. even with proof of ownership.

Giorgio @ Advanced Sports Engineering Lab has the only VF58 that IHI ever sold to the public. It was used on his 01/01 Forester STI concept car that was built in collaboration with STI allowing him exclusive access to all of their rarest parts.. even those discontinued and unavailable to the public.
https://www.facebook.com/advancedspo...7374465019605/

Let me know if you're interested in obtaining any of these rare turbochargers or would like additional information on them. I'm happy to help.
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Old 05-01-2020, 06:54 PM   #852
az06wrx
Scooby Newbie
 
Member#: 463777
Join Date: Mar 2017
Default

Quote:
Originally Posted by WRXnick16 View Post
The post that you referenced is slightly inaccurate.

The Legacy STI S402 used the very rare VF51. This turbo isn't even documented on most of the common online Subaru IHI turbo lists. The VF51 was exclusive to the S402 with only 402 units made. It has a 9 blade turbine wheel and 6+6 straight blade profile compressor wheel.

VF51
RHF5H
14411AA790





The VF42 (144114S000) was used exclusively on the S203 & S204 (~1155 units). This turbo featured a larger diameter (48.5mm) 6+6 compressor wheel, 9 blade turbine wheel (instead of 11), twin scroll P25 turbine housing, and RHF5HB ball bearing CHRA.

The VF56 was exclusively used on the R205 (400 units).

The VF58 was used on the S206, S207, S208 & Type RA-R. This is the best turbo that IHI ever made for Subaru. It may not be the rarest, but it's the most sought after and nearly impossible to purchase a replacement.. even with proof of ownership.

Giorgio @ Advanced Sports Engineering Lab has the only VF58 that IHI ever sold to the public. It was used on his 01/01 Forester STI concept car that was built in collaboration with STI allowing him exclusive access to all of their rarest parts.. even those discontinued and unavailable to the public.
https://www.facebook.com/advancedspo...7374465019605/

Let me know if you're interested in obtaining any of these rare turbochargers or would like additional information on them. I'm happy to help.
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Old 05-06-2020, 09:36 PM   #853
squaresandcubes
Scooby Newbie
 
Member#: 512837
Join Date: Mar 2020
Default Spool / HP Numbers

Are these HP numbers based on pump gas? ie 91.
squaresandcubes is offline   Reply With Quote
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