What's a "frisbee"?
Burning Brakes
Joined: Feb 2008
Posts: 988
Likes: 7
From: Sarasota Fl
On the left is the frisbee and on the right is the water pump pulley:
Here it is in the stock configuration - again, the frisbee is on the left, or towards the front of the car and the water pump pulley is immediately to its right, followed by the water pump:
Here it is with the frisbee 'tossed' (putting on the belt is 20X easier BTW). You will have to add some washers under each water pump pulley bolt to compensate for the missing thickness of the frisbee (I measured with a micrometer and the frisbee thickness is exactly the same as a standard zinc grade 5 washer). The water pump pulley is the one with 4 bolts with washers under each one:
Hope that helps,
Jonathan
Here it is in the stock configuration - again, the frisbee is on the left, or towards the front of the car and the water pump pulley is immediately to its right, followed by the water pump:
Here it is with the frisbee 'tossed' (putting on the belt is 20X easier BTW). You will have to add some washers under each water pump pulley bolt to compensate for the missing thickness of the frisbee (I measured with a micrometer and the frisbee thickness is exactly the same as a standard zinc grade 5 washer). The water pump pulley is the one with 4 bolts with washers under each one:
Hope that helps,
Jonathan
Last edited by janarvae; Dec 20, 2008 at 10:14 PM.
Thread Starter
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 79
From: Monroe OH
NCM Sinkhole Donor
Thanks for the clarification on that. I know I had that off when I changed my crank pulley, but doesn't that hold the water pump pulley in place? What's the performance benefit if it can be safely removed? 
Thread Starter
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 79
From: Monroe OH
NCM Sinkhole Donor
Thanks for the illustrations, I had replied to cruisinart before your ills. came through. I must have changed my wp pulley also, it doesn't have lips on either side, like the one in your picts. Thanks a lot for the replies.
Le Mans Master
Joined: Jul 2007
Posts: 5,043
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From: Tampa Florida
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From: middle of Illinois
Burning Brakes
Joined: Feb 2008
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From: Sarasota Fl
Team Owner
Joined: Dec 2000
Posts: 90,675
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From: SE NY
Cruise-In II Veteran
What's the performance benefit if it can be safely removed?
When the A/C compressor was changed in '88 (through '91) the frisbee was added to the WP pulley to dampen out vibration caused by A/C compressor on/off cycling, story on my site.
The introduction of the #113 D-port heads in '88 brought 10chp additional but the frisbee took it away due to the added rotary inertia needed to accelerate the frisbee disc.
So tossing the frisbee realy does bring "free HP" for the late L98s.
Le Mans Master
Joined: Jul 2001
Posts: 8,183
Likes: 3
From: Santa Maria, CA
Mine became the "anti-theft device" of the bathroom key for the shop where I used to be.
I still remember the looks on people's faces when they would ask to use the bathroom and we would give 'em the frisbee.
"WTF is this thing?!"
I still remember the looks on people's faces when they would ask to use the bathroom and we would give 'em the frisbee. "WTF is this thing?!"
Last edited by pablocruise; Dec 21, 2008 at 04:20 AM.
Race Director
Joined: Nov 2003
Posts: 12,221
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From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Race Director
Joined: Nov 2003
Posts: 12,221
Likes: 446
From: Overland Park Kansas
2020 Corvette of the Year Finalist (appearance mods)
C4 of Year Winner (appearance mods) 2019
Thanks!
