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View Full Version : 90cc A/C Piston& Cylinder specs?



stoneman
11-11-2008, 01:59 PM
Where can I find the specs for a 2006 90cc a/c drr?
I pulled the topend and want to check the service limits.

Also what should the piston to cylinder clearance be on a new topend?

stoneman
11-12-2008, 05:17 PM
no one?
so you guys just unpack your new piston and rings from the box slap it all together and let it eat?:eek2:

stoneman
11-14-2008, 02:54 PM
Found this info on gforcemotorsports.com

A Clearance between Piston and Cylinder: 0.035~0.040mm
B Warpage Limit of Cylinder Head: 0.03mm
C Piston Side Clearance: 0.03~0.05mm
D Tip Clearance of Piston Ring: 0.15~0.35mm
E Spark Plug: BP8HSA-R (NGK)
Clearance: 0.9~1.0mm