Yes, people I did do a search but it seems I'm not using the right combo of words for the search cause I came up empty.

I'm looking for a quick guide for the Vortech V2 S/C and it's various pulley sizes and what they equal to as far as boost.

i.e. a 3.33" pulley = 6-7 lbs of boost....etc.

No, it's not on a Maxima, but being that it's a V2 Vortech it really shouldn't matter. Boost is boost if it's coming from the same kind of S/C. It is also intercooled, front mount, air-to-air, if that matters.

Thanks guys.

 

fast lexus perhaps?? heh.

 

Actually, it does matter what the application is, since the blower makes the most boost pressure at its outlet, and the pressure drops due to piping resistance by the time you get to the intake manifold where the pressure is measured with a boost gauge. Also, an engine that breathes better than another will make the boost pressure lower. But anyway, for a V2 on a Maxima, the boost pressure vs pulley size is approximately:

3.6 - 7 psi
3.33 - 9 psi
3.25 - 10 psi
3.125 - 11 psi
2.87 - 13 psi

 

with an intercooler, you might read lower boost than what you supposed to get

 

what are you putting a V2 on. I saw your gs400 with a procharger at NOPI. Nice ride man.

Matt

 

And different engines have different crank pully diameters. The ratio between the crank pully and SC pully determine the speed at which the blower is turning, which will determine how much boost is produced.

 

That's what it's on, my GS400. It's a Vortech V2 supercharger, but I was trying to up the boost a little. I'm limited on stock internals due to high compression from factory.

I just thought that it would be kinda like nitrous jets...set sizes=set lbs of boost. Guess stephenmax makes sense. The crank pulley vs. S/C pulley and total overall pipe will make a little difference on on the amount of boost the engine sees. I know the intercooler will make me loose some pressure, but Millen says one thing and my gauge says yet another.

I will find out for sure on Thurs. when I go to the dyno to tune in the S-AFCII.

BTW, Here is what the setup looks like:

http://www.clublexus.com/gallery/sho...cat=500&page=1

 

very nice

 

Very, very nice!

 

Thanks guys.

 

NIce Nice!!!!

 

very nice~

which company manufactures the kit?

 

It's made by Rod Millen. The S/C is actually a Vortech piece and the intercooler is made by Spearco.

 

sounds like a SORRY a** excuse to me...



j/k ..

you know I love ya

 

sounds like he wants to go 3.25 youll love 3.25, I did

 

Yall both know that I aint' skeered!!!!

 

lets us know if you decide to go there, I still want a ride when ever we meet up again, and then some footage to go with it

 

I'm ready when you are. I went to the dyno today and the car is only seeing 5lbs of boost. I'm trying to research what size I need to go up to 7-8 lbs of boost.

 

I hope to read about anopther encounter with a vette with the new setup

 

If I ever get 8lbs of boost....he'd better be modded.

 

With what you have Now if it aint a z06, I'll put $5 on you.. if you make 8 PSI and it's a z06, I'll put $5 on you

 

you said you wanted 8PSI, you can put the 3.25 pulley and not sinch the belt down too tight and it will put you @ 8PSI. Why do I say that, because I was seen 8PSI the last few days of my SCER and also when I took it off I forgot that I had loosened the belt on purpose prior to leaving NC, I was only seen 10 @6600RPMs, but remeber you have the intercooler -?? PSI

 

I really, really don't like that idea. The odds of the belt skipping a rib and shreading go way up.

If you want 8psi, put the 8psi pully on there, or adjust your BOV to bleed a little.

 

Jaime I love ya bro, but I'm with ejj on that. My belt was slipping on the dyno yesterday @ 6k and while it was doing that I lost 20+HP just from the slipping.

I'd rather get the right pulley and just call it a day. A guy on our website told me the other day that he is running 8.5 lbs w/o any problems for 1.5 yrs now. I emailed him to give me his pulley combo to compare before I go and order or get any size from you. It's not that I don't trust you, cause I do, it's just that with the crank pulley I have I don't know that size to make sure that it's the same as yours. If I have a bigger or smaller pulley, it's going to totally change the ratio and therefore it's not going to net the same.

I'm just worried of going to high since the motor is high compression already.

I don't have one of THOSE motors laying around. If it was the max, it would be ok, but not the Lex.

 

you dont like the idea, but the fact is that I got back from NC on July 24, I been riding/racing around on a somewhat loose belt but had enough tension that it did not squeal. I guess from working on belts so much I calculated a perfect amount of tension. Explain how is the belt going to skip a rib if you have no alignment problems?

also when you accelerate the belt if you have not noticed the belt sinches itself down, get under there and see what I am seen.

If you mean a completely loose belt thats not what I meant, I had rode and dynoed with a loose belt to the point where I only saw 5.9PSI and CBR was with me when that happened, remember that day when you paid for me to dyno? now you see what I am talking about CBR I got you man, we have to get together sometime.

 

How bout a G35 or Evo8?

lol

 

Fact is this: if you're loosing boost, that means you have incorrect tension. If you have incorrect tension you risk having a belt do something strange...pop off a rib is just one possability.

If it works for you, great. I wouldn't be recommending it as a way to bleed boost though. Its not really smart.

 

Lets see who knows what they are talking about here with blowers and belts?

This is a real life situation here and happened about 4 weeks before NOPI

A member here on the org. decides he wants to SC his car, blower got installed and on his way home belt shreds. You remove the blower and notice pullies are about to melt and he needs to go to Jacksonville florida and cant afford another shredded belt and wont get home if the pullies melt, he comes up to crying for help, what would you do to help him out to prevent another shredded belt and for the plastic pullies not to melt on him on his way back to atlanta from Jacksonville?

Lets see whats smart and whats not smart? Ill give you your answer an you can ask the member and all activities I have witness him do on the freeway

 

I gotcha.

I remember.

I'm ready when you are.

 

That's super. There's still a right way and a wrong way to adjust your max boost.

 

alrighty then, no big deal, I just know what I was talking about

 

LOL -

French fries and gravy tonite Jaime