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Author Topic: CP Pistons-Clearance Specs Needed!  (Read 3196 times)

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Hoist!

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CP Pistons-Clearance Specs Needed!
« on: February 09, 2008, 03:56:53 PM »
Does anyone have CP Piston's piston to cylinder clearance specs. I'm looking for their forged piston "loose" fit and "tight" fit cold clearances. Should be something like 0.002" tight, and 0.035 loose, or whatever their recommendation is. Vern is fitting my pistons himself since we're not getting them setup right from the vendor. Wes has his pistons made per his spec by CP. But Vern wants to fit them himself and we need CP's specs. TIA if you can get this for me. :2vrolijk_21:

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johnsachs

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Re: CP Pistons-Clearance Specs Needed!
« Reply #1 on: February 09, 2008, 04:14:37 PM »
Hoist,
Use .0025" measured at the bottom of the skirt.
John
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Hoist!

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    • CVO1: '07C FLHRSE3, BLACK ICE OF COURSE, CUSTOM 110" TC 6-SPEED +++, "CYBIL"!!!
    • CVO2: '99 FXR3 BRIGHT & DARK CANDY BLUE W/FLAMES, STAGE II 80" EVO 5-SPEED +++, "JOY"!!!
    • CVO3: 4: & 5: '85 FXWG BLACK w/CUSTOM FLAMES, 110" EVO 6-SPEED +++ CVO style!!!; '08 NSMC PROSG CUSTOM FXR BASED PRO STREET BLACK, 89" EVO 5-SPEED, VERY FAST!!!; '09 NSMC HSTBBR CUSTOM RIGID HOISTBOBBER, SILVER METALFLAKE BATES SOLO SEAT & TIN w/BLACK WISHBONE FRAME, 80" EVO (w/Shovelhead bottom end) 4-SPEED! VERY COOL!!!
Re: CP Pistons-Clearance Specs Needed!
« Reply #2 on: February 09, 2008, 04:17:23 PM »
Quote from: johnsachs on February 09, 2008, 04:14:37 PM
Hoist,
Use .0025" measured at the bottom of the skirt.
John

Thanks John. Is that the mid-point clearance, or is it on the loose or tight side? We don't want it too loose for longer life and less noise. But I beat on it pretty good, and don't want it too tight either. Thanks again. :2vrolijk_21:

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johnsachs

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Re: CP Pistons-Clearance Specs Needed!
« Reply #3 on: February 09, 2008, 04:22:10 PM »
Hoist,
The very BOTTOM of the skirt,with the PISTON and CYLINDER at the exact SAME TEMP.
John
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Hoist!

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    • CVO1: '07C FLHRSE3, BLACK ICE OF COURSE, CUSTOM 110" TC 6-SPEED +++, "CYBIL"!!!
    • CVO2: '99 FXR3 BRIGHT & DARK CANDY BLUE W/FLAMES, STAGE II 80" EVO 5-SPEED +++, "JOY"!!!
    • CVO3: 4: & 5: '85 FXWG BLACK w/CUSTOM FLAMES, 110" EVO 6-SPEED +++ CVO style!!!; '08 NSMC PROSG CUSTOM FXR BASED PRO STREET BLACK, 89" EVO 5-SPEED, VERY FAST!!!; '09 NSMC HSTBBR CUSTOM RIGID HOISTBOBBER, SILVER METALFLAKE BATES SOLO SEAT & TIN w/BLACK WISHBONE FRAME, 80" EVO (w/Shovelhead bottom end) 4-SPEED! VERY COOL!!!
Re: CP Pistons-Clearance Specs Needed!
« Reply #4 on: February 09, 2008, 04:26:36 PM »
Quote from: johnsachs on February 09, 2008, 04:22:10 PM
Hoist,
The very BOTTOM of the skirt,with the PISTON and CYLINDER at the exact SAME TEMP.
John

Understood John, thank you. But do you have CP's specs at all?

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johnsachs

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Re: CP Pistons-Clearance Specs Needed!
« Reply #5 on: February 09, 2008, 04:43:44 PM »
Hoist,
Yes,that's their SPEC.,and what I've been using with NO issues whatsoever.
John
 :)
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Hoist!

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  • This chit ain't ROCKET SCIENCE!!!!

    • CVO1: '07C FLHRSE3, BLACK ICE OF COURSE, CUSTOM 110" TC 6-SPEED +++, "CYBIL"!!!
    • CVO2: '99 FXR3 BRIGHT & DARK CANDY BLUE W/FLAMES, STAGE II 80" EVO 5-SPEED +++, "JOY"!!!
    • CVO3: 4: & 5: '85 FXWG BLACK w/CUSTOM FLAMES, 110" EVO 6-SPEED +++ CVO style!!!; '08 NSMC PROSG CUSTOM FXR BASED PRO STREET BLACK, 89" EVO 5-SPEED, VERY FAST!!!; '09 NSMC HSTBBR CUSTOM RIGID HOISTBOBBER, SILVER METALFLAKE BATES SOLO SEAT & TIN w/BLACK WISHBONE FRAME, 80" EVO (w/Shovelhead bottom end) 4-SPEED! VERY COOL!!!
Re: CP Pistons-Clearance Specs Needed!
« Reply #6 on: February 09, 2008, 04:54:26 PM »
Quote from: johnsachs on February 09, 2008, 04:43:44 PM
Hoist,
Yes,that's their SPEC.,and what I've been using with NO issues whatsoever.
John
 :)

Thank you. I'll pass it on to Vern, my builder. These specs aren't on CP's website. :2vrolijk_21:

Hoist! 8)
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"We wanna be free to ride our machines without being hassled by The Man!"

Traxxion Dynamics Suspension Rules! "It ain't braggin' if you can back it up!"

"Cause I'm sitting on top of the world!" (zoom in on satellite map in my Profile)
 

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