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Old 05-03-2002, 11:04 PM   #1
Austin
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Default Need VF29 Info

Specifically: How early will the VF29 spool?

With a drop in ITG panel filter, silicon IC hoses, ported TB/knife edged throttle plate, catless exhaust w/2.5" downpipe and 3" catback, I can make 1 bar of boost pressure by 2250 rpms in 3rd and 4th gears on a flat road. Currently I'm using a Vishnu unichip.

VF29 users - when do you spool, and what is your setup?

As soon as I install my tec3, I'd like to move up to a slightly larger turbo... but since autox is what I love, I need to go only *slightly* bigger, and the VF29 seems like the choice...

Thanks
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Old 05-04-2002, 12:04 AM   #2
sherifx
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They're typically hard to find... - my info

sherif
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Old 05-04-2002, 01:12 AM   #3
Austin
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Quote:
Originally posted by sherifx
They're typically hard to find... - my info
I know... but I want one...
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Old 05-04-2002, 01:55 AM   #4
SKC
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From memory, my VF29 in 4th gear was making 1.1 bar by about 3100 rpm. For autocross, rally or 2.0ltr street use it is the best option IMO.

SKC
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Old 05-04-2002, 09:26 AM   #5
titsataki
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since they are not so common in the US they are a bit pricey. I think Cobb tuning puts one on their RT spec. I think they sell it for around $1500-1600(US). Maybe we can set a group buy.

cheers

Nick
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Old 05-04-2002, 09:36 AM   #6
PadreWRX
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Yes, from my experience it's >3000rpm. What helped me most was an uppipe, which made spool-up a lot quicker. Can't give you exact numbers since I did it concurrent with other mods, but they advertise 500rpm quicker.

Padre
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Old 05-04-2002, 09:44 AM   #7
Somber
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look at the performance plots here:

http://cobbtuning.com/aps-cobb/aps/rtperformance.html

the RT Spec was using a VF29 at the time - tho I expect they will be shifting to the new APS Turbos...
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Old 05-04-2002, 09:51 AM   #8
Austin
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Quote:
Originally posted by SKC
From memory, my VF29 in 4th gear was making 1.1 bar by about 3100 rpm. For autocross, rally or 2.0ltr street use it is the best option IMO.
3100 rpm... What kind of boost controller were you using?
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Old 05-04-2002, 09:53 AM   #9
Austin
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Quote:
I think Cobb tuning puts one on their RT spec. I think they sell it for around $1500-1600(US).
Cobb tuning is great but they don't really try to be competitively priced... The best price I've found so far is $1200...
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Old 05-04-2002, 11:04 PM   #10
SKC
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Quote:
Originally posted by Austin
3100 rpm... What kind of boost controller were you using?
At the time I was using the VF29 on the 2.0 I was just using the Unichip EBC. The tuning was quite aggressive in terms of A/F to try and get some heat and gas flow to aid spooling.

Cheers,

SKC
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Old 05-05-2002, 12:09 AM   #11
titsataki
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Quote:
Originally posted by Austin
Cobb tuning is great but they don't really try to be competitively priced... The best price I've found so far is $1200...
$1200 is not that bad. I guess the VF30 can be had for around $1050 shipped (Adam from Z1 has a nice deal going- very tempting..)

I know dyno numbers are not so relevant but I am curious how does it compare to the VF30 AWHP. If I am going to get a new turbo I would like to be at around 275AWHP. I know the VF30 has not problem making that. I also would like to make it at the lowest possible boost (stock engine, upgraded TMIC).

SKC how much boost did you run?

Cheers

Nick
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Old 05-05-2002, 12:25 AM   #12
SKC
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Quote:
Originally posted by titsataki

SKC how much boost did you run?
Nick,

With that setup I ran 18 lb boost upto 4400 rpm, and then the boost tapered to 14 lb by the redline. The car made 170kw ATW compared to the std power on that dyno of 88-90kw ATW.

Cheers,
SKC
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Old 05-05-2002, 02:26 AM   #13
Austin
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Quote:
Originally posted by titsataki
$1200 is not that bad. I guess the VF30 can be had for around $1050 shipped (Adam from Z1 has a nice deal going- very tempting..)
I stopped in at a local turbo shop a few days ago and got a quote of $800 for a VF30. Of course I'd have to pay Washington state's silly 8.5% sales tax on top of that, but... He's still checking on the VF29, but I'm hoping I can have one for less than a grand.
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Old 05-05-2002, 09:34 AM   #14
titsataki
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Quote:
Originally posted by Austin
I stopped in at a local turbo shop a few days ago and got a quote of $800 for a VF30. Of course I'd have to pay Washington state's silly 8.5% sales tax on top of that, but... He's still checking on the VF29, but I'm hoping I can have one for less than a grand.
Are you serious? for a new VF30 and a new VF29? Maybe we can get a few people for a better price? run it by the shop and PM me. (lol I do not have to pay the tax )


cheers

Nick
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Old 05-05-2002, 09:37 AM   #15
titsataki
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Quote:
Originally posted by SKC


Nick,

With that setup I ran 18 lb boost upto 4400 rpm, and then the boost tapered to 14 lb by the redline. The car made 170kw ATW compared to the std power on that dyno of 88-90kw ATW.

Cheers,
SKC
kool.. now I remember you mentioning it before...18psi sounds very nice. I know the dyno power is just a number but the improvement vs stock is what counts.

Cheers

Nick
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Old 05-05-2002, 01:29 PM   #16
snookem
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SKC

Why did you taper the boost from 18psi to 14psi.

Using stock injectors maybe??????

Hey, I'm from the Gold Coast
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Old 05-05-2002, 01:56 PM   #17
JaMa
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Default Re: Need VF29 Info

Quote:
Originally posted by Austin
Specifically: How early will the VF29 spool?

With a drop in ITG panel filter, silicon IC hoses, ported TB/knife edged throttle plate, catless exhaust w/2.5" downpipe and 3" catback, I can make 1 bar of boost pressure by 2250 rpms in 3rd and 4th gears on a flat road. Currently I'm using a Vishnu unichip.

VF29 users - when do you spool, and what is your setup?

As soon as I install my tec3, I'd like to move up to a slightly larger turbo... but since autox is what I love, I need to go only *slightly* bigger, and the VF29 seems like the choice...

Thanks
Ya know, if price is an issue, you can go with ANY of the VF24, VF28 or VF29 turbos. They are all VERY similar in performance and you may be able to pick up one of the older models, brand new, for a lot less money. Accoding to people in the UK and down under these can spool in the 2500rpm range if properly tuned.

JaMa
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Old 05-05-2002, 04:47 PM   #18
Austin
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Default Re: Re: Need VF29 Info

Quote:
Originally posted by JaMa
Ya know, if price is an issue, you can go with ANY of the VF24, VF28 or VF29 turbos. They are all VERY similar in performance and you may be able to pick up one of the older models, brand new, for a lot less money. Accoding to people in the UK and down under these can spool in the 2500rpm range if properly tuned.
Price really isn't an issue. I have engine management, bigger injectors, exhaust... everything I would need to put a real monster turbo... But I like autox, and I want to stay with a small, quick spooling turbo.

That being said, If I can get the turbo I want for $1000 instead of $1200 or $1500, I'd rather pay $1000.

The VF29 should be the quickest spooling of the three that you mentioned. You said "these can spool in the 2500rpm range" - are you saying that all three can spool that low, or just the vf29? And what do you mean when you say spool? Quantify, please
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Old 05-05-2002, 05:45 PM   #19
SKC
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Jama,

Yes they are all similar, but the VF29 will spool slightly faster than the 24/28. The principal advantage over the 24/28 is efficiency of the blade & bearing design, and the use of inconnel for the wheelset. Correct tuning is very important for low spool time, but the 29 cannot make useful boost at 2500.

Snookem,

Hi! A fellow QLD'r - small world eh! Boost was tapered for a few reasons. The boost was set to run in the most efficient range. More boost would have resulted in more power, but was starting to slip out of the efficient range of the compressor map. The car was tuned for maximum torque and throttle response, not for peaky top end power or bragging rights although 90%+ increase over std with a TMIC was not bad. Anyone who drove the car was amazed at the amount of midrange punch which made it a very quick road car, and a tight road course demon. Injectors cycles (std 550 yellow injectors) were fine and the car was using at the time a 248 ltr Bosch Motorsport pump. Also, although more top end power was achievable, I was not interested in pushing the std internals and drive train any harder. It fact, one of the thing I like about the way it was tuned is that it could be driven very quickly and easily and yet I would still not have to rev it past 5500-6000rpm unless I wanted to to. Compared to some mates cars equipped with anything from VF22s to Trust T76 (full boost at 5500rpm) I was faster everywhere other than an all out drag with the appropriate 5000rpm+ dump. The car still managed to run consistent 1:02s around Lakeside International.

Cheers,
SKC
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Old 11-17-2006, 12:08 AM   #20
WRXRallyBlue
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Does anyone know which model the VF29 comes off of?
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Old 11-17-2006, 12:22 AM   #21
RallyImprezive
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some great info in this thread. Very nice
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