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120r ccp

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Old Feb 6, 2020 | 07:26 AM
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Default 120r ccp
I’m new to the site, so I apologize if it’s already been asked but I did search and simply can’t find anything... Looking to determine what the cold cranking pressure on a 120r (original build) should be. I’m at 800ft, the engine has around 10k on it, I currently am getting 178/178. Thanks in advance.
 
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Old Feb 6, 2020 | 09:59 AM
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According to the calculator on Big Boyz website their compression calculator says it should be somewhere around 174. I'd say you're pretty close to that.
 
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Old Feb 6, 2020 | 10:49 AM
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From what I read, the 120r should crank 175-185 out of the box. I would say yours is where it should be.
 
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Old Feb 6, 2020 | 11:15 AM
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Sounds almost too good to be true! Ride on....
 
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Old Feb 6, 2020 | 09:22 PM
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What’s it get when the engine is at operating temp? Just curious is all.
 
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Old Feb 7, 2020 | 06:47 AM
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Originally Posted by Madnss
What’s it get when the engine is at operating temp? Just curious is all.
I didn’t check to be honest. Maybe I should have, but from what I read the engine was supposed to be cold during the test. Open throttle, fully charged battery, no plugs in cyls with them grounded, unplugged compression releases.
 
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Old Feb 11, 2020 | 04:28 AM
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If looking for more stream, a Wood 9B is a GREAT plug/play cam for that.
HUGE increase in useable torque.
Scott
 
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Old Feb 11, 2020 | 12:30 PM
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Originally Posted by Hillsidecycle.com
If looking for more stream, a Wood 9B is a GREAT plug/play cam for that.
HUGE increase in useable torque.
Scott
I read some of your old posts Scott, seems like a great choice. Just concerned about the crank with the additional torque. Might have to just address that while issue while I’m this deep in it.
 
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Old Feb 12, 2020 | 09:28 AM
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They seem to be tougher than the interweb, will lead one to believe.
Scott
 
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Old Feb 16, 2020 | 07:10 PM
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Default Stuck clutch hub
Clutch hub is stuck... Clutch hub nut is off, but the basket won’t release off the shaft. Do I need the Jim’s puller?
 
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