We're dropping another pulley size to 2.87, but...

reeber

10 Year Member

Mar 10, 2004

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Berlin, NJ

Aug 18, 2005

#1

• Aug 18, 2005

• #1

I am afraid of belt slippage. Anyone know a cheaper solution to prevent this than the 8-rib kits?

 

reeber

10 Year Member

Mar 10, 2004

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Berlin, NJ

Aug 18, 2005

#2

• Aug 18, 2005

• #2

I answered my own question... I bought the Reichard Racing "Ultra-Grip" 2.80 pulley..

 

Z28 KILR

Founding Member

Aug 4, 2001

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Columbus, OH

Aug 18, 2005

#3

• Aug 18, 2005

• #3

When I droped a pulley size I had to change the belt to a smaller size.

 

BooWFO

New Member

May 10, 2005

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Louisville, KY

Aug 18, 2005

#4

• Aug 18, 2005

• #4

So I take it you got the MAF taking care of? Still gunning for 600hp?

 

reeber

10 Year Member

Mar 10, 2004

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Berlin, NJ

Aug 18, 2005

#5

• Aug 18, 2005

• #5

600 HP is right around the corner. With the methanol and the 3.33 pulley, we made two pulls at 513 and 505 HP in 99 degree heat and hi humidity. The MAF was not the issue. Beleive it or not, it was the Diablosport Predator. It wasn't reading my EEC like it was supposed to. My mechanic hooked his computer up to it and made a pull and the loads were dead on. So, that was taken care of. Also, we noticed that the belt was slipping pretty bad on the pulley. The 515 HP only had 8-9 LBs. of boost. So, that's why I decided to change the pulley with the Reichard Racing piece, buy a couple of smaller sized belts to correct that issue

 

DBMSTNG

I fantasize about it being BIG!

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Apr 23, 2002

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not quite here

Aug 18, 2005

#6

• Aug 18, 2005

• #6

i have a 3.20RR pulley and it still slips.

 

reeber

10 Year Member

Mar 10, 2004

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Berlin, NJ

Sep 1, 2005

#7

• Sep 1, 2005

• #7

DBMSTNG said:

i have a 3.20RR pulley and it still slips.

Click to expand...

I haven't finished the tune on my car yet, so didn't go WOT, but how bad does yours slip? Enough to consider going 8 rib?

 

Gearbanger 101

Straight Outta Locash

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Aug 10, 2002

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Ontario, Canada

Sep 1, 2005

#8

• Sep 1, 2005

• #8

Best way to do it is with the 8-rib set up. Another solution to this is the use of a larger crank pulley. You could go with a Lightning (7.50") crank pulley and the match it to a 3.2" blower pulley as an alternative to the 2.90" blower pulley and 6.85" stock crank pulley. This would give you better belt wrap to eliminate slipping and still maintain the proper ratio.