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Discussion Starter · #1 ·
Looking for this spec on the OEM springs, I have the installed heigts and pressure figures (closed and open valve), but need the coil bind height spec. Thanks.
 

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Discussion Starter · #2 ·
Found them!...took me a couple of days and a re-install of Internet Explorer, but here they are....might as well share them....right?...
Intake: 1.250"
Exhaust: 1.090"

....OEM's don't even support the B-303 if the .060" gap from coil bind is followed.
 

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The E cam will work and it has more lift than the B.
 

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Discussion Starter · #5 ·
They "work", but performance is hurt and the "risk" of valve float and coil binding is there....look at the numbers:

Intake:
Valve Closed Installed Height: 1.8"@82#
Valve Open Installed Height: 1.33"@230#
Coil Bind Height: 1.250"
Lift to Coil Bind: .530"

Exhaust:
Valve Closed Installed Height: 1.6"@85#
Valve Open Installed Height: 1.15"@226#
Coil Bind Height: 1.090"
Lift to Coil Bind: .510" = why they work until .500"

The B and E will "work", but with less than the recommended minimum .060" gap from coil bind height, reason why FRPP "recommends" the A50 springs upgrade for all the alphabet cams, and Crane the 96803-16 for the Powermax 2040(E-303).


<font size=-1>[ This Message was edited by: Joel50 on 3/22/06 7:09am ]</font>
 
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