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Old 12-11-2002, 02:14 PM   #1
Sordid Philosopher
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Question What's HP rating on IHI VF30 turbo?

Hi, I have a VF 30 and I've never seen it advertised as a 350 hp turbo or the like.

What I am considering is upgrading my turbo, but only if it IS an upgrade. I see Garrett turbos rated at 320, 400 and 450 hp what is the hp rating on my VF 30? I also see the PE turbos rated at 400 and 450 hp (which I am guessing are Garrett parts inside of an IHI housing).

Thanks for any input (Yes I did many searches but searching on turbos results in so many hits it is very hard to sort through).
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Old 12-11-2002, 02:23 PM   #2
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bump, i couldn't even find the cfm rating for the VF30 or 34.
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Old 12-11-2002, 02:44 PM   #3
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There is a post in the Engine Management Forum with a guy who made 320whp on C16 (leaded race gas) and around 300 whp on 93 with what sounded like a semi-conservative tune. I bet you could probably squeeze a bit more out of that turbo though. But I would think it would be safe to say that 300-330 is what the VF30 is capable of spitting out
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Old 12-11-2002, 02:59 PM   #4
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Yep... That's me with TXS's help. But, if you consider that the 321 and 300 numbers are at the wheels, you could say I am making 350-400 hp at the crank based on how you believe the drivetrain losses are.

Hopefully, when we get our active AWD chassis dyno in (it might be a year or so ), I am going to put my car on it and motor it to see what the drivetrain losses are. With an active dyno, I can use the dyno to spin the drivetrain and whatever force it takes to do that is the loss due to the drive train.
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Old 12-11-2002, 03:15 PM   #5
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Default Re: What's HP rating on IHI VF30 turbo?

Quote:
Originally posted by Sordid Philosopher
Hi, I have a VF 30 and I've never seen it advertised as a 350 hp turbo or the like.

What I am considering is upgrading my turbo, but only if it IS an upgrade. I see Garrett turbos rated at 320, 400 and 450 hp what is the hp rating on my VF 30? I also see the PE turbos rated at 400 and 450 hp (which I am guessing are Garrett parts inside of an IHI housing).

Thanks for any input (Yes I did many searches but searching on turbos results in so many hits it is very hard to sort through).

FYI.
The PE turbos do not use Garrett parts. They are hybrid turbos assembled by PE using newer IHI parts. They use the newer Center cartridge that uses dual Ceramic Ball bearings(vs. the older Ceramic Roller type bearings on the VF series) and the Compressor housing is from an RX series IHI. The 1818 uses the P18 IHI exhaust housing as does the VF30. The 1820 uses the P20 housing as does the VF22. The P20 is the largest exhaust housing IHI makes in that form factor. The compressor side of the 1818 and the 1820 are exactly the same as is the center section. Both flow the same amount of air. The 1820 has more top end power because it flows more exhaust out easier.

Your VF 30 is worth 250-300 whp depending on the tune Extreme tunes with 117 octane leaded fuel have netted a touch more but that is really over spinning the turbo. Its probably happy to make 250-260whp and last.

The PE turbos shine at higher boost pressures. If you have ever seen a PE compressor map you will see that the sweet spot is 20-22 psi. The problem is that you cant do this on pump fuel without having to reduce advance to the point that the increased boost is not worthwhile.

From the Dyno charts I have seen on these forums and from my exerience with the PE turbos are going to make another 20-30-40whp over your vf30 at similiar boost pressures. Once over the 18 psi range they will make more like 50 whp and on extreme tunes expect 60-70 whp over your VF30. Recently a 1820 car laid down 376whp on race fuel.

For example. "most" VF30 cars that are tuned for pump fuel will trap 105-108mph in the 1/4 at 18-19 psi of boost. My 1820 car tuned with the Utec and 91 octane pump fuel just trapped 112.5 mph on 18 psi. I expect it will trap about 115mph on race fuel because another Iclubber with this combo trapped 113mph on 93octane fuel. 6-10 mph trap increase is substantial between the VF30 and the PE's.




CT
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Old 12-11-2002, 04:39 PM   #6
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I would agree with what CT said.

I think it is a fair assumption to say that the VF30/34 are capable of less flow than the VF22 which has a slightly larger compressor. For all practical intents and purposes, the VF22 is capable of around 480CFMs maximum according to the compressor map (pushing it to the limit). By my reckoning this equates to around 350HP (crank).

I think, therefore that it's safe to say that the VF30 is efficient at significantly less than 350 crank horsepower without a second power adder.

330WHP from a VF30 and no Nitrous? That particular VF30 is going to have a very short lifespan..

-Pace

Last edited by pace; 12-11-2002 at 04:46 PM.
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Old 12-11-2002, 05:22 PM   #7
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Quote:
Originally posted by pace
I would agree with what CT said.

I think it is a fair assumption to say that the VF30/34 are capable of less flow than the VF22 which has a slightly larger compressor. For all practical intents and purposes, the VF22 is capable of around 480CFMs maximum according to the compressor map (pushing it to the limit). By my reckoning this equates to around 350HP (crank).

I think, therefore that it's safe to say that the VF30 is efficient at significantly less than 350 crank horsepower without a second power adder.

330WHP from a VF30 and no Nitrous? That particular VF30 is going to have a very short lifespan..

-Pace

20-22 psi would be my guess where anything past 15-15 is overspin at high rpms. If backpressure was measured pre turbine I bet it would have exceeded compressor pressure. Situations like this work because of large effecient intercoolers and upgraded cooling systems. Its not good for motor life and or turbo life.



CT
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Old 12-11-2002, 11:04 PM   #8
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this is some great info

thanks a bunch but FWIW, i witnessed two VF-30 make close to
300hp. one w/ FMIC at 18 psi and one w/ larger TMIC at 20 psi.
both daily drivers. maybe the IC made the little diff in power w/ the boost setting.
i think 300hp is the max hp (efficiently) a VF30 will make.
it would be nice to see more dyno's out there w/ the diff VF turbos
preferable 34/35.
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Old 12-12-2002, 01:35 PM   #9
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Default Missed the point....

Quote:
Originally posted by stickman
this is some great info

thanks a bunch but FWIW, i witnessed two VF-30 make close to
300hp. one w/ FMIC at 18 psi and one w/ larger TMIC at 20 psi.
both daily drivers. maybe the IC made the little diff in power w/ the boost setting.
i think 300hp is the max hp (efficiently) a VF30 will make.
it would be nice to see more dyno's out there w/ the diff VF turbos
preferable 34/35.
No offense, but I think you missed the point that pace and AZ were trying to make
Let's try it another way.....I once made a 2.0 liter pinto engine run 13.80s on spray, but it didn't make it home
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Old 12-12-2002, 09:28 PM   #10
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Default Re: Missed the point....

Quote:
Originally posted by n2xlr8n


No offense, but I think you missed the point that pace and AZ were trying to make
Let's try it another way.....I once made a 2.0 liter pinto engine run 13.80s on spray, but it didn't make it home
Exactly. Its amazing what you can do with what you have.... TXS is getting major power out of little VF30s and its just incredible. But my personal view is to do that with a larger turbo and have things lessed stressed. Not saying 300hp on a VF30 is bad but its alot for that little turbo for sure. People just need to realize that when you run stuff this hard stuff will break or it will wear out fast. I have excepted the fact that my engine will blow one day and I have the money to build another. Thats why things like nitrous are fun to me now because I am not to worried about it.. I have excepted the motors failure already. hehee.

CT
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