quickest spooling!
09 July 2011, 07:05 PM
#1
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quickest spooling!
hi,which turbo is the quickest spooling out of vf24,vf34 and vf35?
what differences would i experience between vf24 to vf35.and vf24 to vf34?
what are the capabilitys of them all?
thanks.
what differences would i experience between vf24 to vf35.and vf24 to vf34?
what are the capabilitys of them all?
thanks.
09 July 2011, 07:14 PM
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The VF43 from a hawkeye sti 
Only joking. I assume the smaller the turbo the quicker it would spool but you sacrifice the ability to hold boost to higher rpm so get lower top end power - so I think it is a compromise between good spool with mid-top end power. That's why twin turbo combos work well..small turbo to help the low down spool at lower revs and then big turbo takes off where the small quicker spooling one runs out of puff, like on the Supra or 335 bmw, and of course GTR. Although Subaru don't do twin turbo set ups on the Impreza.
Only joking. I assume the smaller the turbo the quicker it would spool but you sacrifice the ability to hold boost to higher rpm so get lower top end power - so I think it is a compromise between good spool with mid-top end power. That's why twin turbo combos work well..small turbo to help the low down spool at lower revs and then big turbo takes off where the small quicker spooling one runs out of puff, like on the Supra or 335 bmw, and of course GTR. Although Subaru don't do twin turbo set ups on the Impreza.
09 July 2011, 07:17 PM
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The VF43 from a hawkeye sti Only joking. I assume the smaller the turbo the quicker it would spool but you sacrifice the ability to hold boost to higher rpm so get lower top end power - so I think it is a compromise between good spool with mid-top end power. That's why twin turbo combos work well..small turbo to help the low down spool at lower revs and then big turbo takes off where the small quicker spooling one runs out of puff, like on the Supra or 335 bmw, and of course GTR. Although Subaru don't do twin turbo set ups on the Impreza.
Only joking. I assume the smaller the turbo the quicker it would spool but you sacrifice the ability to hold boost to higher rpm so get lower top end power - so I think it is a compromise between good spool with mid-top end power. That's why twin turbo combos work well..small turbo to help the low down spool at lower revs and then big turbo takes off where the small quicker spooling one runs out of puff, like on the Supra or 335 bmw, and of course GTR. Although Subaru don't do twin turbo set ups on the Impreza.what are your thoughts on vf43?
09 July 2011, 07:22 PM
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No not laggy at all. I can hear and feel it starts spooling by 2500-2600 (with a decat downpipe) and full boost is reached by 3000rpm. Mine's the standard turbo and I've been told good for up to 380-400bhp, with supporting mods.
Does Andy do twin turbo set up packages?
Does Andy do twin turbo set up packages?
Last edited by matth76; 10 July 2011 at 10:28 AM.
09 July 2011, 07:38 PM
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Honestly I'm not sure. Someone else may be able to better answer that question. Duncan or Simon will know. I guess it is partly down to the map but also the mechanics of how removing the cat in the downpipe allows the turbo to start spooling up earlier as the exhaust gasses can be released quickly (I assume). Before I removed the cat it would spool up around 2800 (only guessing mind you but that is when I felt the shove of the turbo). Now it is coming in about 300rpm earlier. I don't think the 2.5ltr will make it spool any differently to a 2.0ltr. I'm not sure on the differences on the above turbos you mentioned I'm afraid. I think the VF43 is a good compromise though but I'd be interested to know how the other turbos compare too. Billet turbos are supposed to be very quick spooling but they're pricey.
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09 July 2011, 07:58 PM
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Normally you will find between 2 similar sized turbo's that the one which is a low friction roller bearing turbo will spool up quicker.
Out of the ones you have pointed out,2 are roller bearing turbos, those being the vf24 and vf34, the vf35 is a sleeve bearing turbo, same with the vf43.
Tony
Out of the ones you have pointed out,2 are roller bearing turbos, those being the vf24 and vf34, the vf35 is a sleeve bearing turbo, same with the vf43.
Tony
09 July 2011, 08:16 PM
#11
Yes these difference will affect spool,but you can gain with some addons like Harvey Up pipe and ported headers which will help bring spool down.
here is RR from one which have fitted VF43 on classic
Jura
10 July 2011, 12:29 AM
#15
I have the vf34 on my type r 2.0l currently running 300bhp was at 330.
not the most powerfull out there but does make for a cracking drive with the short ratio gear box i even went back to the standard 16 inch wheels and i think its better know than it has ever been for tail out and sideways action very controlable and predictable with a very nice mix of power and driveability.
And as i don't race or drag it fun is more important to me than power.
i'm even talking myself out of going for 500bhp whilst writing this.
not the most powerfull out there but does make for a cracking drive with the short ratio gear box i even went back to the standard 16 inch wheels and i think its better know than it has ever been for tail out and sideways action very controlable and predictable with a very nice mix of power and driveability.
And as i don't race or drag it fun is more important to me than power.
i'm even talking myself out of going for 500bhp whilst writing this.
10 July 2011, 10:10 AM
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I have the vf34 on my type r 2.0l currently running 300bhp was at 330.
not the most powerfull out there but does make for a cracking drive with the short ratio gear box i even went back to the standard 16 inch wheels and i think its better know than it has ever been for tail out and sideways action very controlable and predictable with a very nice mix of power and driveability.
And as i don't race or drag it fun is more important to me than power.
i'm even talking myself out of going for 500bhp whilst writing this.
not the most powerfull out there but does make for a cracking drive with the short ratio gear box i even went back to the standard 16 inch wheels and i think its better know than it has ever been for tail out and sideways action very controlable and predictable with a very nice mix of power and driveability.
And as i don't race or drag it fun is more important to me than power.
i'm even talking myself out of going for 500bhp whilst writing this.
isnt the vf34 a 350 bhp turbo?
it is a good step up from a vf24? or not much different?
what mods do you have?
10 July 2011, 11:32 AM
#17
I don't like doing stupid speeds to get my kicks, as if you get it a little bit wrong things get messy real quick.
I'm close to standard only turbo fuel pump, fpr and simtec thats why i told you to go for front mount, bigger injectors as you will get half the money back selling your old stuff it makes more sense than to pay for two mapping /rolling road sessions and that should put you in the region your after.
I also don't fancy 2k for a gear box that i don't like the ratios in as i love the type r box again because it's mental but not stupid terminal speeds.
And the 95ron saves a few quid and a lot of messing around looking for fuel let alone the money spent on fuel just trying to find it.
10 July 2011, 12:34 PM
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Low boost and 95 ron, spool is nice and quick as its ball baring turbo, like i said i prefer drivability over power and find it a better combination for the purposes of getting it sideways more power is not always a good thing depends what you want from the car, i also went a knotch down on the rear antiroll bar and that helps make it a little more tail happy along with the 16's
I don't like doing stupid speeds to get my kicks, as if you get it a little bit wrong things get messy real quick.
I'm close to standard only turbo fuel pump, fpr and simtec thats why i told you to go for front mount, bigger injectors as you will get half the money back selling your old stuff it makes more sense than to pay for two mapping /rolling road sessions and that should put you in the region your after.
I also don't fancy 2k for a gear box that i don't like the ratios in as i love the type r box again because it's mental but not stupid terminal speeds.
And the 95ron saves a few quid and a lot of messing around looking for fuel let alone the money spent on fuel just trying to find it.
I don't like doing stupid speeds to get my kicks, as if you get it a little bit wrong things get messy real quick.
I'm close to standard only turbo fuel pump, fpr and simtec thats why i told you to go for front mount, bigger injectors as you will get half the money back selling your old stuff it makes more sense than to pay for two mapping /rolling road sessions and that should put you in the region your after.
I also don't fancy 2k for a gear box that i don't like the ratios in as i love the type r box again because it's mental but not stupid terminal speeds.
And the 95ron saves a few quid and a lot of messing around looking for fuel let alone the money spent on fuel just trying to find it.
ok,that makes good sense but why not just run your original vf24 for that power,seems a bit mad to have a vf34(350-360 capable turbo) and only be running it at 300bhp as the vf24 can do this?
ps. i also love the type r close ratio box!
10 July 2011, 01:53 PM
#19
The mapper went a bit pale on the run after the mapping session, and he's been in some quick cars and i was only trying a little bit
I'm also a believer of keeping everything well within the safe limits, though a fat lot of good that did me as i need another rebuild, still umming and areing about 500
Last edited by ditchmyster; 10 July 2011 at 01:59 PM.
10 July 2011, 02:06 PM
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It had the turbo change before i got it, i also have a full decat. and the vf34 is a better turbo and i'm not 100% but i would say probably the fastest spool of the ones you mention, does give a very nice kick as well,most people think i'm running a lot more bhp, and are quite supprised / ashen faced when they get a little taste of how quick it is, lol and i don't go mad with people in the car.
The mapper went a bit pale on the run after the mapping session, and he's been in some quick cars and i was only trying a little bit
I'm also a believer of keeping everything well within the safe limits, though a fat lot of good that did me as i need another rebuild, still umming and areing about 500
The mapper went a bit pale on the run after the mapping session, and he's been in some quick cars and i was only trying a little bit
I'm also a believer of keeping everything well within the safe limits, though a fat lot of good that did me as i need another rebuild, still umming and areing about 500
12 July 2011, 06:50 PM
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The VF24 will be the fastest spooling as it's the smallest, but it's not that small and regarded by many as the most "drivable" of all turbos. Then someone invented the billet turbo 
lighter = faster, sc36 is awesome
lighter = faster, sc36 is awesome
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