deviant1

where can i buy a 2.50 8 rib pulley with the slashes for extra belt grip for the vortech ysi blower with andy's A&A kit? ive tried one shop but they are extremely hard to do business with and would rather not name them. any ideas would be appreciated!!!

tlove32

http://www.reichardracing.com/pulleys.php

peelrubber

Also try Greg at blowerworks.net. Greg recently made a slotted pulley for my ECS Paxton Novi 1500. Greg can send you pics.

DOUG @ ECS

You will be way over the max RPM of that blower with a 2.5" pulley, just an FYI.

PowerLabs

By a full 10,000RPM when the engine is at 6500RPM, and 25,000RPM if you shift at 7K.
The belt tension is also over 1500lbs so it is almost guaranteed to slip.

TRIZ

You're gonna push that YSi pretty hard with a 2.5" What size crank balancer? Flop Drive installed?
Arun told me not to use the Reichard style pulley because you'll have to pull really high tension on the belt to minimize slip. A Reichard will shred a highly tensioned belt. Arun recommended a smooth head pulley and high tension.
Arun ran a 10-rib and a 2.7" or 2.75" pulley.

I started with a 3.3", now with a 3.1" pulley on YSi on A&A. Next is a 2.9" - all Reichard. Next one to buy will be a smooth 2.7".

0Steve@AandACorvette

you can also try aspracing.com for pulleys.

TRIZ

Doug,
The Mustang guys tell me the YSi starts to really shine at about 80,000 rpm!

deviant1

i have the 2.70 on there now and am not seeing more than 14 lbs of boost, it has the 10% innovative crank balancer pulley, my compression is at 8.8-1 i finally got hold of reichard racing and the pulley will be shipped out tommorow, thanks guys

DOUG @ ECS

Yeah I have been known to overspin a head unit or two also.

(but I have an easier time getting them fixed if they break)

You must have belt slip already, you should be making a lot more then 14lbs with that combo. Good luck with your build

Do you have a stock tensioner on the car?

tjwong

I am sure he is slipping, the last YSI I worked on was making 13 psi with a 3.125 pulley and a stock OD crank balancer.

0Taylor@DallasPerformance

What is the engine combo Deviant1? CID/topend?

Frans96ss

We have a 2.75 with stock diam. crank pulley and we make alittle over 16psi on a 434Cu in. We use Reichard racing pulley also with ALOT of tension and it works fine.

0Steve@AandACorvette

Need to try that with a 8" crank now and see what happens.

deviant1

its a stock block 427, stock crank, diamond low comp pistons, stock heads ported, andy's a&a 8 rib ysi, innovative 10% bigger balancer pulley setup, meth, 80 lb injectors etc....

TRIZ

You must have some slip. My 347 with a 3.125" pulley 8-rib + Innovator's West 8" balancer peaked at 18.7 psi with A&A YSi.

deviant1

negative no slip i am using the reichard racing pulley and not even a gatorback belt, just a regular goodyear belt!!!

95vettski

How much power are you putting down? Could you share a dyno graph?

BADZ

Wonder what a YSI/427ci and a 10% OD with a 2.7 blower pulley and the flip drive would make?

carlrx7

got any HPTuner logs you can post? i want to see that MAP line. i still bet slip.

-Carl