Author Topic: CCP  (Read 583 times)

Offline sean

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CCP
« on: 03.01. 2013 01:25 »
Hi
what kind of reading should I be getting on a 1962 super rocket [stock motor] on the compression guage ?
thanks

Offline saltbox Alf

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Re: CCP
« Reply #1 on: 04.01. 2013 00:09 »
In general terms the reading should be between 120 up to 160 lbs, unless you are running 10.5 to 1 or somthing as exotic :o, the most important thing being the cylinders should be within a few pounds of each other, if not, then time to investigate why not.
If you are getting 100 lb or  less, time for a rebuild!
I like bike, especially my 61'SR

Offline sean

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Re: CCP
« Reply #2 on: 04.01. 2013 00:40 »
thanks
this is a stock motor no hc pistons or anything ......been sitting for a long time just checking things over as the rings were stuck in the barrel

Online muskrat

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Re: CCP
« Reply #3 on: 04.01. 2013 19:32 »
G'day Sean, ditto what Alf said. If the rings were stuck in the bore I'd at least throw new rings in and if there is any etching in the bore a rebore next size up with new pistons & rings.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7