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Spree cylinder is out of spec

Posted: Fri May 07, 2010 2:42 pm
by Gingerbread Man
My 87 Spree cylinder w/letter "C" measures 41.47mm, service limit is 41.050.

Is my cylinder too worn to use?

My compression is 79psi, will new rings fix my compression?

Re: Spree cylinder is out of spec

Posted: Fri May 07, 2010 3:38 pm
by CharlotteSpreeRider
You may be able to find oversize rings still, if you can, they should fix your compression.

Re: Spree cylinder is out of spec

Posted: Fri May 07, 2010 3:55 pm
by Bear45-70
Oversized rings won't get it done. You need a new oversized piston AND rings and then bore the cylinder to match the oversized piston. OH and 79 PSI is way below the minimum speced it the manual, 114 PSI minimum.

Re: Spree cylinder is out of spec

Posted: Fri May 07, 2010 4:07 pm
by Gingerbread Man
Ok so if I bore this to .50 over i'll be ok?

Re: Spree cylinder is out of spec

Posted: Fri May 07, 2010 6:36 pm
by devenex
You also have the option of utilizing one of Tazz's kits to replace the top end.

Re: Spree cylinder is out of spec

Posted: Fri May 07, 2010 7:21 pm
by Bear45-70
First off you need to see what size pistons are available. I have a 2 mm oversized piston in my goodie box to match the 2 mm oversized bore in a cylinder. But they are slated to go on my scooter this summer. As devenex said, one of Tazland001's 44 mm big bore kits is an option too.

Re: Spree cylinder is out of spec

Posted: Fri May 07, 2010 9:05 pm
by Gingerbread Man
I have 2 Spree's one has a TAZ 44mm kit coming in the mail. But on this one I would like to bore it. I can get either a .25 or .50 92 SA50 piston and rings from my Honda dealer. I will bore it at school next week so I need to know what size I should go to.

Re: Spree cylinder is out of spec

Posted: Fri May 07, 2010 9:28 pm
by odinxxix
think i would go with the .50 bore. get your matching piston and rings and get set for break in.

Re: Spree cylinder is out of spec

Posted: Sat May 08, 2010 2:51 am
by PimpinSpree
is there somewhere i can read about these "tazz's big bore kits"??????????

Re: Spree cylinder is out of spec

Posted: Sat May 08, 2010 11:51 am
by Gingerbread Man