16G vs VF8?

livestrong14 · Post by **livestrong14** » Fri Dec 07, 2007 4:28 am

Pro's? Con's? Opinions? Comments?

Thanks

BXSS · Post by **BXSS** » Fri Dec 07, 2007 1:58 pm

I think I read (in here somewhere) that the VF8 is between a TD04 & a TD05-16G in size.
I've never seen one in person so I can't say for sure.

I see JDM 90* inlet 16Gs frequently enough to know the exhaust housings tend to crack @ the v-band clamp (but they can be TIG'd) & up/dn pipe bolt down areas, and they are decently sized for a stock turbo.

legacy92ej22t · Post by **legacy92ej22t** » Fri Dec 07, 2007 2:57 pm

My buddy Scott (Tleg93) is running a VF8 and I had a 16G on my '92. Visually, the VF8 looks almost as big as the 16G but the 16G is definitely bigger and pushes a lot more cfm.

I can't give you a fair comparison on performance because supporting mods were different and also his car is a 4eat where as mine was a 5mt and I ran more boost. It seems like a nice snail though.

SemperGuard · Post by **SemperGuard** » Fri Dec 07, 2007 4:46 pm

VF11 TD04 VF10 VF8 VF12 TD05-16G

smallest to largest.

Imprezive · Post by **Imprezive** » Fri Dec 07, 2007 4:58 pm

Yeah, a 16g is a bit bigger than a vf8, but both will net you damn good power.

SemperGuard, I'd consider the vf10 smaller than the td04, or at least less capable because of their age. Maybe you know something I dont?

Adam West · Post by **Adam West** » Fri Dec 07, 2007 6:57 pm

This might be helpful...

http://www.ztechz.net/id7.html

farfrumwork · Post by **farfrumwork** » Sat Dec 08, 2007 12:36 am

I'd say the 16G is 10% more flow than the VF8.

I have a VF12, which In think flows the same as a VF8 (but has better spool?). And through trying to research the VF12 I found statements that the 16G is about 10% over the VF12.

I saw the wheel sizes for a 16G on the link Adam just posted. I have the wheel sizes for the VF12 in the garage somewhere on a piece of paper. I'll find it and report back maybe tonight. I know it is not "all" of what makes a turbo, but it's a good start.

The VF8 has a 20-R exhaust housing right? The VF12 does.... Not sure if it means the same thing as the P-20 exhaust housing that the VF22/23 run (I think it's both of those)

BUT - if you are looking to upgrade the VF8 you have now, I'd speculate that you would want ot go either Big 16G or larger to get much cost benefit - but I've been wrong before.

-Chad

livestrong14 · Post by **livestrong14** » Sat Dec 08, 2007 2:35 am

Thanks for the replies guys! Thanks Adam for the link.

farfrumwork · Post by **farfrumwork** » Sat Dec 08, 2007 6:14 am

From the link Adam posted:

TD05H-16G has 16G compressor wheel: 46.5mm inducer and 57mm exducer wheel. Turbine side has H style turbine wheel: 49mm exducer, 56mm inducer wheel. Mitsubishi rates TD05-16G 520cfm @ 2PR (14.7psi).

I only have the measurements for the turbine (exh) for the VF12, which would most likely be th same for the VF8:
46mm exducer, 53mm inducer

So the 16G has a bigger exh wheel at least...

SemperGuard · Post by **SemperGuard** » Sat Dec 08, 2007 7:49 am

Imprezive wrote:SemperGuard, I'd consider the vf10 smaller than the td04, or at least less capable because of their age. Maybe you know something I dont?

I don't have the size of the compressor exducer, but everything else is larger on the VF10, so I think for the sake of size the VF10 is bigger than the TD04. Of course MHI's generally spool quicker than IHI's of the same era.

farfrumwork wrote:I'd say the 16G is 10% more flow than the VF8.

I have a VF12, which In think flows the same as a VF8 (but has better spool?). And through trying to research the VF12 I found statements that the 16G is about 10% over the VF12.

I saw the wheel sizes for a 16G on the link Adam just posted. I have the wheel sizes for the VF12 in the garage somewhere on a piece of paper. I'll find it and report back maybe tonight. I know it is not "all" of what makes a turbo, but it's a good start.

The VF8 has a 20-R exhaust housing right? The VF12 does.... Not sure if it means the same thing as the P-20 exhaust housing that the VF22/23 run (I think it's both of those)

BUT - if you are looking to upgrade the VF8 you have now, I'd speculate that you would want ot go either Big 16G or larger to get much cost benefit - but I've been wrong before.

-Chad

The VF8 and VF12 have the same turbine and housing. The VF12 has a larger compressor blade, and I forget if the housing is larger.

20R and P20 are the same measurements as far as IHI is concerned, but they are definately not the same housings. R housings are for RHB's, and P housings are for RHF's Newer design.

farfrumwork wrote:From the link Adam posted:

TD05H-16G has 16G compressor wheel: 46.5mm inducer and 57mm exducer wheel. Turbine side has H style turbine wheel: 49mm exducer, 56mm inducer wheel. Mitsubishi rates TD05-16G 520cfm @ 2PR (14.7psi).

I only have the measurements for the turbine (exh) for the VF12, which would most likely be th same for the VF8:
46mm exducer, 53mm inducer

So the 16G has a bigger exh wheel at least...

Just to add more fuel to the fire VF39 turbine is 52.5mm/47.5mm in/ex. So a slightly larger exducer, and slightly smaller inducer than a VF8/12. Compressor is 46.50mm/60mm in/ex. VF8 compressor is 46mm/60mm in/ex. VF12 compressor is 47mm/60mm in/ex. Of course you're comparing RHB to RHF, so extrapolate what you will.

Oh and a TD05-16G small is 46.5mm/60mm in/ex on the compressor.

farfrumwork · Post by **farfrumwork** » Mon Dec 10, 2007 10:41 pm

Cool. great info!

SemperGuard · Post by **SemperGuard** » Sat Dec 15, 2007 6:48 pm

I was wrong about the VF12 compressor. In/ex is 45mm/56mm as per these pics stolen from mx_masta at mx6.com:
http://img120.imageshack.us/img120/521/1000085od9.jpg
http://img120.imageshack.us/img120/4623/1000084bf0.jpg

OH and vf40 (05-06 LGT) is 52.5/40 turbine in/ex 43.5/56.5 compressor in/ex. Again, this is an RHF5 turbo.

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16G vs VF8?

16G vs VF8?