scooby2004Lee

iTrader: (1)

Got to find out which of these turbos is better, anyone have any knowledge (ACCURATE) please...thanks guys

cossie_eater

iTrader: (5)

would like to no this one to?

addison

Information about all VF Turbos - ClubWRX Forum - Subaru Impreza WRX and STi Community and Forums

cossie_eater

iTrader: (5)

cheers good reading. but any personal exsperience from these turbos?

scooby2004Lee

iTrader: (1)

Makes a good read... but doesnt say which is newer OOORRR which has more power!! Someone has to know which of these is more useful to use??? Dig deep guys i really want to know this??

addison

This may help, what power are you after? what will you use the car for? track or road

http://www.andyforrestperformance.co.uk/index2.html

joz8968

iTrader: (13)

Both turbos are reasonably quick-spooling 320-340bhp at the flywheel jobs. Possibly 350+ if lucky.

The 35 is a conventional thrust bearing; the 34 a roller bearing.

The 35 is supposed to spool a little eariler than the 34... And the 34 allegedly has a bit better top end.

As for which is newest - don't know. But I'm gonna guess it's the 34 ... But by how many weeks/months/years, haven't the foggiest.

scooby2004Lee

iTrader: (1)

Thanks joz for that info, defo fink the 35 might be newer lol, but basically there about the same right?? the info i got direct from subaru is that the VF35 is used in the 04 WR1 and therefore was the latest built (out of the two). Also i belive the 35 is slightly bigger??
Thanks to you two addison, good piece of info, using my car on road, maybe do the odd quarter mile but not racing. Just want to feel that pull you know!!

addison

IHI VF35 (425cfm, 250-325whp, Bolt-On) This is the standard equipment turbocharger used on the JDM Subaru Impreza WRX. The VF35 is similar to the VF34. It utilizes the same compressor housing and the same compressor inducer size. The differences are in the divided thrust-bearing design and the P15 exhaust housing. This allows the VF35 to spool slightly quicker than the VF34 at the cost of less top-end performance. Expect to achieve full boost with the proper mods and a quality tune between 2800-3300rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.

addison

Description:
The IHI VF-34 Turbo is found on the limited production Subaru v7 WRX STI-RA (GDB). This turbo is differentiated from the VF30 through it's more advanced bearing design. The bearing design allows for much quicker turbo spool-up (depending on tuning, 300-500+ RPMs over the VF30), while retaining the power capabilities of the VF30. The VF34 is capable of 350+ HP (~300+whp) This turbo is a direct bolt-on for all GC8, GDA, GDB EJ20 turbo engines. This is an excellent replacement turbo for those looking for substantial power gains while maintaining streetability

scooby2004Lee

iTrader: (1)

Addison, does that mean ive done the right thing then mate, i just bought a VF35 brand new to go on my 2004 WRX! i've already replaced the down-pipe and up pipe (inc de-cat) middle and rear brand new, walbro fuel pump brand new, flat panel filter, just bought 565cc pink injectors and as i said the VF35!! Do you think that was the right choice?? Hoping to get around the 330bhp mark (Love to get more but...)

99greenwagon

iTrader: (39)

i have a vf35 fitted to my uk 99 wagon,it has ninja sports cat downpipe,2.5 mid section de cat and a scoobysport backbox,sti 5 top mount,walbro,it was mapped to 297bhp and 303lbft torque,1.36 bar ,im happy with the results bearing in mind that headers and injectors are standard.the car has been transformed and i love it,i havent had any experienced with the vf34 so wether u have made the right choice or not i wouldnt know,my mapper said that the 34/35 are almost identical.one thing i can tell u is u are likely to fetch 320/330 and u will enjoy.

scooby2004Lee

iTrader: (1)

thanks mate, thats great news!! i will keep you posted with the results!!

bighead

iTrader: (1)

vf34 is a better turbo

scooby1doo1

iTrader: (7)

Just found this tis is why i bought the VF34

http://bbs.scoobynet.co.uk/general-t...vf34-vf35.html

99greenwagon

iTrader: (39)

so what my mapper says is incorrect??????????,as stated,they are like for like,almost identical.both producing roughly the same power figures! but if u think the vf34 is better then fair enough thats your opinion,the vf34 is more expensive because of the roller bearing design,and this is why alot more people opt for the 35 as its a good turbo at a good price.i personally have read up alot before i chose which one to go for.if i thought there was alot of difference between the 2 then i would have saved up more pennies for the 34.i went for the 35 with respect to what i was told by my mapper who is very experienced with mapping cars with these turbos.

johan84

you are all talking about from 300 to 400hp

but how much power/turbo pressure can an standard wrx/sti engine handle? without eny internal upgrades of pistons or rods.......



gr jm