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#11 Re: A15 piston-to-bore clearance
TexasMidget Posted on: 2016/7/24 4:35
Block was decked and GX head shaved for a total of about 10 thousandths. Should I be concerned with piston to valve clearance?


#12 Re: A15 piston-to-bore clearance
ddgonzal Posted on: 2016/7/24 4:39
According to that Nissan factory service manual, #1 is not loose, it is within spec

FSM: Piston clearance to cylinder block: 0.0010-0.0018 (inch)

Quote:
Clearance is

1. 0.0018
2. 0.0014
3. 0.0016
4. 0.0011


#13 Re: A15 piston-to-bore clearance
Rallytwit Posted on: 2016/7/26 2:49
My spare GX head has had something like .040 taken off of it. Unless you are running a really high lift .460ish I'd wouldn't worry about .010. Check the link below, its for Datsun Cherry / F10 but the motor portion of it is a great resource since they are A-Series powered.

http://www.datsuncherry.ch/PDF/Rennteile75.pdf



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