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BIKELAND > FORUMS > ZX-14.com > Thread: super sport head piston to valve NEW TOPIC NEW POLL POST REPLY
joseph702


Zone Head
Posts: 598
posted June 24, 2012 12:27 PM        
super sport head piston to valve

i know to check piston to valve clearince is not tdc but were do i start? any one know around wha degree ? working on it right now so any help would be nice ty .

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davisag


Expert Class
Posts: 103
posted June 24, 2012 02:00 PM        
around 12 degrees before tdc for the ex and 12 degrees after tdc for the inlet, you lookin 1 mm clearance for the inlet and a little more for the ex
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joseph702


Zone Head
Posts: 598
posted June 24, 2012 02:36 PM        
thank u
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Y2KZX12R


Needs a job
CompetitionCNC.com
Posts: 3752
posted June 24, 2012 06:09 PM        
+1

I usually find 8-10 BTDC is the closest point on the exhaust and 8-10 ATDC for the intake.

Its best to check it at 6 8 10 and 12. you will see it cet closer and then further.

Piston to valve clearance depending on your springs and the major intensity of the cam grinds. Typical is no less than .040"-.050" on the intake and .050"-.070" on the exhaust.

Stay to the high side if the major intensity is below 24.
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Y2KZX12R
CompetitionCNC.com

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