Vortech on 2.87 pulley?
 

I can't find anyone who has used the vortech with the 2.87 pulley and i was wondering what kinda whp and tq it is putting out on 93 pump gas.

That's 12.5 psi, your not gonna see that ran on pump gas because you have to retard the timing so much. Look at the 3.10? Pulleys which are around 10.5 psi, there's alot more people running pump gas on those, but once again, pump gas+8.5-10.5 psi = pretty much the same gains, this motor shines on e85.

Agreed. There are a few people on here running that pulley on E85 making 350+. I think fa20club might have had decent success with that pulley on pump. Ill have to find that thread.

Please do. I really want to run the vortech but I want 330whp


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Don't think that can happen running pump. He'll I had to upgrade my injectors/pump just to get 90% out of the stock pully, and I'm at 274whp.

There's still alot on the stock pully, I'm tuned for 92 octane.

That sucks. It is vortech it fa20 club.


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I have a 2.87 Pulley here that I'll sell you!


As far as peak numbers, we have seen 305hp on e60 with the stock pully with injectors and pump

the 2.87" will overspin the blower. The oil supply cannot keep up with it. And it is just a little much on the motor, the timing has to be pulled up top. I have a 3.125 on E85 pulling in the 300's my self.

Your exactly right, unfortunately I was being sarcastic because the pulley is pretty much worthless for this setup.

The car hits around 6000 rpms and falls on it's face when you try to use this pulley.

Yup... on E85 it can pull wonders but unfortunately will damage the blower over time. :(

But honestly.. on E85 on the 3.125 it is beast mode. I made ~ 2.5x + the HP of the baseline car at the dyno event i hosted. And i doubt there is an issue running the 8 ribbed 3.00 pulley that puts you smack at the maximum RPM this supercharger is supposed to handle.

So - Stock is 3.48, then there's 3.125, and 2.87 - I want to run pump gas - so 3.125 is probably the most useful one to nab?

And is the correct gates pulley for that setup the Hundai Genesis one?

Thanks!

NM - answered my own question.

3.25 pulley is what i want, with the Gates K060970 Belt.

To play devil's advocate, you could run a pulley like that with a wastegate and build boost faster. :iono:

A 2.87 pulley with an electronically controlled external wastegate tied to an octane/ethanol sensor would be a kickass tune.

off topic but yopu definitely listen to the Ticket with that awesome username! :thumbsup:

I thought about doing something like that, but at the end of the day I just want to keep it simple. I don't have plans to upgrade internals / clutch stuff yet, so staying under 300hp is ideal currently.

Well it was either that or Ragonk Force.

I was reading on the vortech website that anything above 10psi you will need to change the bypass valve?

I shredded the gates blue racing belt because it jump of the edge of the pulley when I hit the rev limiter. I'm now running the 1/2 shorter belt and it's been good so far 2500 miles. I was a bear to get on but possible.

How big is the crank pulley on the BRZ?

I'd have to measure one - which I have somewhere in my garage - but the OEM part number is 12305AA370 so you might be able to google it.

Thanks - Google says 5.826748713587742 - that may not be exact but it's close.

Do any of you have a part number for the belt required to run the 2.87 pulley? I plan on running it soon with 93/E85 Currently making 363HP on E85

Currently running a 3.125 pulley on 93, maybe making somewhere in the upper 200's, never dynoed. Wanted the smaller pully mostly for a little earlier boost rampup, tuner pulled a bit of timing on the top end.

Related question: stock clutch is holding fine on the power it is making now, if I decide to go flex fuel and run E85, think a new clutch is necessary? I don't typically drive like a lunatic, no heavy slippage/launches, mostly just rolling in-gear stuff.

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