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Upgrading turbo - VF34 or VF35?

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Old 17 September 2008 | 03:35 PM
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Originally Posted by BOB'5
Yes, would recommend:
  • Bigger Injectors
  • Intercooler (STi 8 TMIC or FMIC)
  • Uprated Clutch
  • Headers
  • Air filter/induction
  • Remap
Am sure I've missed a few bits...

Gearbox will be on borrowed time IMHO.

Best to set out a budget.
Bob Couldn't he just have a reduced map with boost down etc so he is not using the turbo to the max then when he is ready he can add more mods knowing he doesn't have to get another turbo?

Basically all he would then need to do is get the Sti bits in his wrx e.g. the 550cc injectors, tmic, etc when he is ready.
Old 17 September 2008 | 03:42 PM
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Originally Posted by New_scooby_04
To clairfy: I was comparing the VF35 and VF34 mate, not the 18G sorry for the confusion!

The 18G is a step up in terms of output from both of the above. I'd have one....were it not likely to spell the end of my gearbox!

Ns04
I know thats why I quoted you in full. I was actually agreeing with your statement and just adding that the 18G gives even more for not that much more money (for the turbo that is)......
Old 17 September 2008 | 03:56 PM
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If i got the 16g, could i then upgrade to an 18g wheel and housing? or does it not work like that?
Old 17 September 2008 | 04:02 PM
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what is the limit of a VF35 of anyone know's without it going pop??
Old 17 September 2008 | 04:10 PM
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Originally Posted by AS87
If i got the 16g, could i then upgrade to an 18g wheel and housing? or does it not work like that?
If you got the 16g with supporting mods and used it at the top end of its capability, the mods list would be pretty much the same.

Best to set a budget and do it that way or costs will just spiral out of control.
Old 17 September 2008 | 06:02 PM
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Originally Posted by BOB'5
Yes, would recommend:
  • Bigger Injectors
  • Intercooler (STi 8 TMIC or FMIC)
  • Uprated Clutch
  • Headers
  • Air filter/induction
  • Remap
Am sure I've missed a few bits...

Gearbox will be on borrowed time IMHO.

Best to set out a budget.
Also add uprated fuel pump.
Old 17 September 2008 | 06:31 PM
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Originally Posted by Mother Theresa
I swapped from a Vf35 to a Td05-18g and the latter made me smile alot more.
ditto

Stand corrected on the 34 spooling quicker than the 35. thought it was other way round. learn something new

go 18g
Old 17 September 2008 | 06:44 PM
  #38  
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What size injectors would i need? Would STI injectors be good enough? and clutch?

I was planning on the remap and STI intercooler anyway and already have new air filters.

Thanks for all the help guys.
Old 17 September 2008 | 07:29 PM
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sti pinks would be fine
Old 17 September 2008 | 09:15 PM
  #40  
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Just fitted a VF43 to my 22B in conjunction with -

WR1 TMIC
550's
Harvey Smith ported headers/up-pipe
Simtek ECU (mapped by Bob Rawle)
H&S sportcat downpipe and BB

Result - 368bhp/340ftlb @ Motoscope.

No lag and very nice top-end.
Old 18 September 2008 | 12:53 PM
  #41  
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Originally Posted by New_scooby_04
There really isn't that much difference between the two: differences in supporting mods and between individual cars amount to more. 35 spools a bit sooner, 34 capable of a bit more top end. My 35 makes 338bhp and a chunky 343ft lbs. Tidgy, who has a very similar set up to me cracked 340bhp, but got less torque. Both very good turbos for the road, however, the VF35 can usually be had significantly cheaper and is thus the one to go for.

Ns04

you called? lol

as said 35 and 34 are very similar indeed, the roller bearing is designed to make spool up in line with the 35 but allow for better top end, sems to do the trick, but we aint talking huge mamounts here.

in reality theres sod all difference on the road between the two.

the winning factor is the 35 can be had cheaper, alot cheaper, due to second hand units being easy to find (off new age sti).

however i found that price wise your only talking £100 difference between the two if you buy them brand new so depends if you want that few extra ponies.
Old 18 September 2008 | 01:32 PM
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Originally Posted by Tidgy
you called? lol

as said 35 and 34 are very similar indeed, the roller bearing is designed to make spool up in line with the 35 but allow for better top end, sems to do the trick, but we aint talking huge mamounts here.

in reality theres sod all difference on the road between the two.

the winning factor is the 35 can be had cheaper, alot cheaper, due to second hand units being easy to find (off new age sti).

however i found that price wise your only talking £100 difference between the two if you buy them brand new so depends if you want that few extra ponies.
Oh, one further difference in the VF34s favour is that it seems a less prone to compressor surge than the VF35.
Old 19 September 2008 | 01:15 AM
  #43  
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The vf34 imo is slightly superior to the vf35. So don't pay too much over a vf35 for it.

VF34p20 - a vf34 with a p20 exhaust housing have done 11.8 qtrs. So they are a handy turbo for the street.

If you get either turbo port the wastegate / housing.

On a good setup 370hp+ is achievable with meth.

How much more power can I squeeze out of my VF35 [Archive] - ScoobyNet

Last edited by typeRv4; 19 September 2008 at 01:17 AM. Reason: extra info
Old 19 September 2008 | 11:20 AM
  #44  
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Originally Posted by AS87
What size injectors would i need? Would STI injectors be good enough? and clutch?

I was planning on the remap and STI intercooler anyway and already have new air filters.

Thanks for all the help guys.
BTW my sti pinks (which are good enough for the 18G) will also be up for sale in a months time
Old 19 September 2008 | 12:09 PM
  #45  
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OP asked
upgrading turbo - VF34 or VF35? VF34 all the way
Old 19 September 2008 | 01:52 PM
  #46  
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Reno, drop me a line when they are for sale. I might be interested!
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