vortech v2 si

I cant find a solid answer to this question .
Whats the max real world boost a v2 si can push ? 17PSI ?
Is it capable of 800hp on e85 intercooled ?

Boost #'s don't mean much. Same pulley will make 12psi on one motor and 18 on another, better your heads and everything will reduce your boost and and intercooler will as well

that said, guys using the V3 Si (same blower but self lubricated) are making over 700whp on Coyote engines

That's what I was figuring but I know vortech list like a (max boost) and hp. I have seen people overspin them which I took as producing more boost. But I forget boost is a measure of restriction.

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I run my V2 Si with 3.125” and 10% OD crank. The motor spins to 7k rpms which puts the blower a few thousand over max impeller speed. However, you would also need to factor slip.

I have a std bore 4.6 with 17cc pistons, TFS 44cc heads and off the shelf TFS cams with the bigger specs. Bought all of this 2010-2011. Surprisingly it made 16psi and with 91 octane put out 615hp to the wheels. The PI intake was a restriction at 6krpms.

I don’t see 800hp but maybe 700 with the right intake and cams. But then you would only have top end power like above 5-5500 rpms.

I forgot to mention this is going on a 4 valve. I currently make 500 at 10 psi

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It’s been a bit since I read specs but out the box TFS 2 valve heads out flow CFMs or match C or B type 4 valve heads.

If you’re in search of 800hp this baby blower won’t cut it. You will be better off starting with a JT trim.

I would be running 10:25:1 compression and e85.i belive this will help

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v2 si is rated to 52000 rpm, 22psi and 1150 cfm of flow, so depends on the engine combo , etc how much power it can make

on a coyote for example you could see 800 ish psi, on a 99, i think your going to come up a little short on powre unless the motor is built to make some big n/a power, i think you would need at least a ti trim

I will be rebuilding it with 60k bearings

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I totally understand what all of you are saying better to have a bigger blower than to max out a smaller blower

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not necessarily , you want to be close to peak effiiciency, but you need a blower that will do what you need it to.

Cobragixxer9994 said:

I will be rebuilding it with 60k bearings

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Bearings are only one part of the equation. The impeller and housing can only move so much air.

true i do have a billet impeller blade. So my housing would be the only remaining limiting factor

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