VF22, anyone running one in a ra gc8?

[ADIKT]

If your going to spend that much on a new turbo... you might aswell get a steve murch td05.. Support locals. Youll still see good results. better than a 22 or a 34 anyway...

[funkytown]

to the OP - whats the purpose of swapping turbos.

By that i mean - what are you're goals for the car in its use, what power do you aim to make?

 pedro said:

I have got a VF22 on my v4 coupe,close ratio box,and prefer it to the VF23 i swapped from.

The 22 is a bit slower to build boost but once spinning it pulls good.

With the close ratio box you are cruising at around 3500rpm @ 110ks and the turbo is just below its boost threshold,so the power is right there when needed but not coming in at highway speed.Thats how i like it.

interesting - the old gt3071r i used was exactly the same as this, 3500 it would come on like a storm, but went on to make 290kw. Perhaps looking in the VF range alone is to narrow, they certainly arent the be all and end all of options, hence why asking what the OP wants to achieve.

* these threads always get me as people give what THEY think is the best option to them, rather than asking or thinking about what the OP might really want from the change.

[madmike]

Just put on a Holset...

Holset rock!

[X]

$3500 including fitting?

reason why they swap for a vf22 is direct bolt on and its cheaper then a gt30 turbo. but a 2nd hand turbo can easily be a tired one that wont puff out as much as it was once new. a MSI turbo is probably is the best option as for bolt on same as a kenigawa ones which are half the price of a brand new vf22

[spark_38]

That dyno plot was with the VF28 - gained an extra 30kW just from going Possumlink to G4. Easy power there! Possumlink was rather annoying; kept stalling.

Back to original q: what are you using car for? Top speed: tracks and drag racing? Or response: daily driving & auto crosses?

I am aiming for top speed (track work), don't care too much for auto-x events - unless it's like slipway where one can do skids and donuts So I should really be looking at a Holset or Garrett.

Looking thru the Megameet pics - the south island guys have the right idea. Some nice big turbos there!

[dzk]

The car I only use in the weekend, I just wanted to know what the vf22 felt like since there are quite a few posts on here regarding their power and also people asking for them in the wanted section nearly every week.

My car is a v3 which should have vf23 factory so never got to experience of the p20 housing as I understand from posts on here, vf23,24,28,29 are all quite similar, just the p20 turbos (vf23, vf22) last a lot longer in the rev range.

From all the info provided, I guess I should look at exhaust and g4/tune since gc8's can't be flashed like the v7 onwards. I don't use the car for track days or anything like that, just wanted a bit more power than what it currently puts out.

If I could gauge what it would be like with a vf22 just cruising around to see how much lag they have.

Still waiting for any offers on a ride in one;)

[B4 2000]

http://i203.photobucket.com/albums/aa204/spark_38/Type%20R%20coupe%20pics/power.jpg[/img]

if you compare the two graphs, it shows the VF22 is far superior everywehre, even as low as 3000RPMs

in saying thi, i don't know what else Chris might have to allow him a great early power band with the VF22 over Spark38's VF28

[X]

you can see that the vf28 starting to die out on power at 5500rpm where the vf22 just wanna keep on going

[spark_38]

It should also be noted my VF28 was 'dodgy', it died shortly after a thrashing at Hampton Downs - seized due to bent shaft. It had the guys at Shred stumped too when they were tuning it - they claimed a VF28 should have offered better mid-range performance.

Also the so-called 'lag' in the VF22 can be dialled out in the Link ECU, or any aftermarket ECU (for that matter).

Below is the 'road tune' on a Possumlink, with the VF22? Notice it doesn't start dropping off until 7,000rpm - a dyno tune would have yielded a more smoother response as the power curve should almost be linear

[Swindog]

The above plot looks very very similar to the curve of my old stuffed vf22...it yeilded the same figures.

[Guest]

genuine new vf22 $1900 http://www.drivenperformance.co.nz/scripts/prodView.asp?idproduct=1204

these guys do club discounts too i think

[Swindog]

And a VF22 from Subaru direct is $10k.

[spark_38]

 evowrx said:

genuine new vf22 $1900 http://www.drivenperformance.co.nz/scripts/prodView.asp?idproduct=1204

these guys do club discounts too i think

That's roughly on-par with BNT, at 25-30% trade price. Although I think Driven maybe slightly cheaper!

[A_Tiny_Chipmunk]

i have a JDM 98 GC8 stock vf22 and yellow tops. the lag can be abit annoying, but over 3.5k rpm it spools fast and the kick is intence

[Guest]

 A_Tiny_Chipmunk said:

i have a JDM 98 GC8 stock vf22 and yellow tops. the lag can be abit annoying, but over 3.5k rpm it spools fast and the kick is intence

that aint lag ^^^^

[funkytown]

 evowrx']

[quote name='A_Tiny_Chipmunk said:

i have a JDM 98 GC8 stock vf22 and yellow tops. the lag can be abit annoying, but over 3.5k rpm it spools fast and the kick is intence

/quote]

that aint lag ^^^^

for the top end power they can offer, thats definitely laggy.

[Guest]

 funkytown']

[quote name='A_Tiny_Chipmunk said:

i have a JDM 98 GC8 stock vf22 and yellow tops. the lag can be abit annoying, but over 3.5k rpm it spools fast and the kick is intence

/quote]

that aint lag ^^^^

for the top end power they can offer, thats definitely laggy.

from what everyone says vf22 are around 3800-4500rpm generally with frontmount? i reckon my vf23/frontmount spools better than the td04/topmount setup. vf23 is bb i know but i still wouldve expected the opposite.

im just used to boost later with bigger turbos/smaller engines i guess. i prefer to change down for boost it keeps economy on keel.

[funkytown]

perhaps tongue in cheek - but you look at some of the holset boys, the garrett guys, even the vf34's & twinscroll vf3X turbos.

To the former i've seen them make the same curves in the low mid range and peak out +50-100kw in the top end.

to the later they make similar top end and totally smash a vf22 down low.

TL:DR, vf22's are very old technology now imo - there are far superior options out there. but they are cheap and can net some good kw for $$ and amount of custom work required (usually nil).

[Guest]

the holset words goin round a tad at the moment. twinscroll is a bit different to single but your setup showed up the low/mid of garrett compared to vf23.

did you look at the bolt up gt3076? seen them on ebay but too many $ for me.

[funkytown]

 evowrx said:

the holset words goin round a tad at the moment. twinscroll is a bit different to single but your setup showed up the low/mid of garrett compared to vf23.

did you look at the bolt up gt3076? seen them on ebay but too many $ for me.

the only thing to note about the Holsets is i believe the hx35 is the smallest they do, and on a plain jane ej20 with out AVCS, Twinscroll or increased capacity they are lag monsters. So they require reasonably large custom mods to work well.

Word of the week as there are some good builds from Chch, next week we'll have a new flavour im sure.

the bolt on GT stuff i dont personally like - they use smaller exhaust wheels and small housings, T25 vs T3/4 which i personally think defeats the point of owning one.

Note there have been several reasonably good results using the bolt in options but in gt3071 sizing, not the 76.

also note the t3 based gtX3076 is a touch more laggy than the gt3071 / vf23 example and i don't think its appropriate for a road going car without the same AVCS / Twinscroll / capacity improvements mentioned above however it still does perform better than an hx35 from what i've found. As a race car turbo its an animal.

[Pappu1]

get the vf22 man

its not laggy in the grand scheme of things and offers a much better feel over the vf28 - on the mid to top anyway

if u ca get it cheap then its a good investment and shouldnt even need a tune to get going

[boon]

VF34 is the shiznits on a road car.... just saying

I get lots and lots of boost veeeery early on.

[scooby-wrx]

V3 STI RA - I swapped my factory VF23 for a VF22 ( due to the 23 shredding the blades... ) I'd rather the 23 to be honest, had better response. The 22 is not bad though, pulls all the way through the rev range. If you can, I'd go for a twin scroll as they're very impressive! The VF36 or VF37 are rather sought after.

[Johnnynz]

 spark_38 said:

Also the so-called 'lag' in the VF22 can be dialled out in the Link ECU, or any aftermarket ECU (for that matter).

How do they tune that out? I am going to a G4 plugin soon and was kind of curios what the Link might do for response.

OT slightly I know sorry but genuinely curious and may add another option to the OP on the reduce lag front.

Also can I suggest move to a tech forum some handy info in here for varying degrees of reader knowledge.