Ysi?
Burning Brakes
Joined: Dec 2015
Posts: 1,096
Likes: 322
From: Denver Colorado
Using the formula:
MaxEngineRPM * (LowerPully / UpperPulley) * BlowerRatio = MaxBlowerRpm
or
6600 * (7.75" / UpperPulley) * (3.6) = 52,000
We can see to spin the V3 at it's max RPM at the engine's max RPM, we'd use a 3.54" upper pulley.
Racer
Joined: Sep 2015
Posts: 434
Likes: 67
From: Upper Marlboro MD
The innovator's lower pulley is 7.75" and the supercharger does a 3.6:1 step up. V3 Si and Ti can be spun at 52,000 rpm.
Using the formula:
MaxEngineRPM * (LowerPully / UpperPulley) * BlowerRatio = MaxBlowerRpm
or
6600 * (7.75" / UpperPulley) * (3.6) = 52,000
We can see to spin the V3 at it's max RPM at the engine's max RPM, we'd use a 3.54" upper pulley.
Using the formula:
MaxEngineRPM * (LowerPully / UpperPulley) * BlowerRatio = MaxBlowerRpm
or
6600 * (7.75" / UpperPulley) * (3.6) = 52,000
We can see to spin the V3 at it's max RPM at the engine's max RPM, we'd use a 3.54" upper pulley.
Last edited by jacksnorm; Nov 15, 2016 at 02:47 PM.
Thread Starter
Instructor
Joined: Jul 2015
Posts: 210
Likes: 32
From: Raleigh
When I first inquired about the ysi I didnt realize it was a decent amount of labor. I thought it would be just swapping head units. Not the case.lol
I'm Batman..
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
3.47" is what I have on my Si trim which put my blower at max output. If you do choose to move forward with the ysi, about how much would you he wanting to sell the T trim headunit for?
Racer
Joined: Nov 2008
Posts: 495
Likes: 50
So i have a v3 ti trim blower right now and put down about 825rwhp car has run 9.74 in the qtr and consistently runs 9.8-9.9. I already have heads/cam/intake/meth on e50. Ive upgraded the hpfp and injectors as well. Im debating on either changing the pulley on my blower and doing lpfp so i can hopefully run straight e85 or saying screw e85 and running a ysi and c16.
As of now i hate screwing around trying to get my blend right with e85. Its kind of a nausance and never end up with the e50. Its always up or under. E50 which if its over i have to add more 93 since ill run out of fuel. Half the time i end up going to the track with almost a full tank cuz of playing with the blend.
So which direction would be best to go with? Both cost about the same. So cost isn't a deciding factor. With the ysi i will have more room to grow but my goals now are to be around 9.3-9.4 in the qtr. And would like some more torque as well.
Also going with the ysi would i need the lpfp? Or will i be fine as long as im not trying to run e85?
Thanks for any input
As of now i hate screwing around trying to get my blend right with e85. Its kind of a nausance and never end up with the e50. Its always up or under. E50 which if its over i have to add more 93 since ill run out of fuel. Half the time i end up going to the track with almost a full tank cuz of playing with the blend.
So which direction would be best to go with? Both cost about the same. So cost isn't a deciding factor. With the ysi i will have more room to grow but my goals now are to be around 9.3-9.4 in the qtr. And would like some more torque as well.
Also going with the ysi would i need the lpfp? Or will i be fine as long as im not trying to run e85?
Thanks for any input
Thread Starter
Instructor
Joined: Jul 2015
Posts: 210
Likes: 32
From: Raleigh
not sure on how much i'd sell it for yet. I need to do some research to come up with a fair price.
Burning Brakes
Joined: Dec 2015
Posts: 1,096
Likes: 322
From: Denver Colorado
What is involved other than swapping the lower Innovator's pulley for a 10-rib one and swapping the head unit? Is the V7 YSi not self-contained and require some oil plumbing?
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Joined: Jul 2005
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Thread Starter
Instructor
Joined: Jul 2015
Posts: 210
Likes: 32
From: Raleigh
Yes i made the switch to the Ysi. I gained a 100whp/tq through the midrange and 65whp/110tq peak. On e35. I really need a lpfp upgrade. Car pulls soo much harder. Can't wait to get to the track and see what she'll do. Hopefully in the next couple weeks ill get a chance.
Racer
Joined: Sep 2015
Posts: 434
Likes: 67
From: Upper Marlboro MD
Yes i made the switch to the Ysi. I gained a 100whp/tq through the midrange and 65whp/110tq peak. On e35. I really need a lpfp upgrade. Car pulls soo much harder. Can't wait to get to the track and see what she'll do. Hopefully in the next couple weeks ill get a chance.
Thread Starter
Instructor
Joined: Jul 2015
Posts: 210
Likes: 32
From: Raleigh
Racer
Joined: Nov 2008
Posts: 495
Likes: 50
Yes i made the switch to the Ysi. I gained a 100whp/tq through the midrange and 65whp/110tq peak. On e35. I really need a lpfp upgrade. Car pulls soo much harder. Can't wait to get to the track and see what she'll do. Hopefully in the next couple weeks ill get a chance.
Thread Starter
Instructor
Joined: Jul 2015
Posts: 210
Likes: 32
From: Raleigh