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nzdatman
Re: Valve to piston clearance
#1
Home away from home
Joined:
2000/11/8 8:58
From Taupo New Zealand
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Posts: 595
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Quote:

dattoman_1000 wrote:
Yes I run the same piston in mine
Never kissed a valve and planning on a fresh build using the same pistons again
I run 1.65:1 roller rockers too with this cam.

Check your valve to bore clearance if your running big valves... just to be sure... they were notched out alittle at the factory.
Might not be an issue but doesn't hurt to check.


How the hell have you not had valve clearance issues? Are your valve seats sunken deeper in to the chamber and head face not planed down at all?
I ran flat top mazda pistons at zero deck height, 0.6mm off the head face and had to cut pockets in the pistons tops for clearance.
I have been told you can run as little as 1mm clearance on inlet valve and 2mm on exhaust, sometimes even less. Have also seen pistons with evidence of valve contact as well though.

Posted on: 2015/12/12 8:56
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Subject Poster Date
     Valve to piston clearance thaifrog 2015/12/9 15:09
       Re: Valve to piston clearance ddgonzal 2015/12/9 22:47
       Re: Valve to piston clearance thaifrog 2015/12/10 2:53
       Re: Valve to piston clearance D 2015/12/10 3:30
         Re: Valve to piston clearance ddgonzal 2015/12/10 3:55
       Re: Valve to piston clearance D 2015/12/10 3:59
       Re: Valve to piston clearance thaifrog 2015/12/10 9:30
       Re: Valve to piston clearance thaifrog 2015/12/10 9:57
       Re: Valve to piston clearance dattoman_1000 2015/12/10 10:52
         Re: Valve to piston clearance nzdatman 2015/12/12 8:56
       Re: Valve to piston clearance D 2015/12/10 12:15
       Re: Valve to piston clearance D 2015/12/10 12:17
       Re: Valve to piston clearance thaifrog 2015/12/10 13:33
       Re: Valve to piston clearance thaifrog 2015/12/12 10:12
       Re: Valve to piston clearance Dundee1000 2015/12/14 9:03
         Re: Valve to piston clearance dattoman_1000 2015/12/14 10:22
       Re: Valve to piston clearance nzdatman 2015/12/16 8:16
       Re: Valve to piston clearance thaifrog 2015/12/16 10:10
         Re: Valve to piston clearance dattoman_1000 2015/12/16 13:15




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