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Author Topic: P3R Crank - Updating the 120r  (Read 13736 times)

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Unbalanced

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Re: P3R Crank - Updating the 120r
« Reply #45 on: August 16, 2017, 10:26:59 PM »
outter cover - has slits on both sides to all you to pry it apart
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Re: P3R Crank - Updating the 120r
« Reply #46 on: August 16, 2017, 10:28:15 PM »
Timing marks on the gears for line up.
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Re: P3R Crank - Updating the 120r
« Reply #47 on: August 16, 2017, 10:29:18 PM »
Timing marked for each gear
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Re: P3R Crank - Updating the 120r
« Reply #48 on: August 16, 2017, 10:30:24 PM »
spring with check ball behind it
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Re: P3R Crank - Updating the 120r
« Reply #49 on: August 16, 2017, 10:31:29 PM »
gear behind the bolt.  also had a snap ring.
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Re: P3R Crank - Updating the 120r
« Reply #50 on: August 16, 2017, 10:32:10 PM »
Reed Valve
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Re: P3R Crank - Updating the 120r
« Reply #51 on: August 16, 2017, 10:32:54 PM »
Seal which was not seated upon inspection on the reed valve.
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Re: P3R Crank - Updating the 120r
« Reply #52 on: August 17, 2017, 09:29:01 AM »
Hi Harry,

You are not going back in with this S&S proprietary pump/camplate setup?  Right?

You are disposing of all this and using the S&S blue cam plate and three stage pump? Right?

Thanks for the great photo shots.
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P3R Crank - Updating the 120r
« Reply #53 on: August 17, 2017, 10:53:19 AM »
For the moment I am going back to it the gear drive system.  One motor Wifeys will have bluepump and plate and mine will have gear drive.   If I have issues again I will change it.   Too short on time to dink with the conversion
« Last Edit: August 17, 2017, 10:55:59 AM by Unbalanced »
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Re: P3R Crank - Updating the 120r
« Reply #54 on: August 17, 2017, 12:10:04 PM »
Cool,  talk to Jim at MF about the reed valve thingy before sticking that back in.
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Re: P3R Crank - Updating the 120r
« Reply #55 on: August 17, 2017, 12:13:40 PM »
I don't have a good understanding of how this reed valve works and I am most likely wrong but does it somehow control cam chest and crankcase pressure??

Maybe that seal blew out?  Maybe it needs some sort of retaining ring?
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Re: P3R Crank - Updating the 120r
« Reply #56 on: August 17, 2017, 07:23:33 PM »
The reed valve is designed to eliminate oil carry over.   The seal blowing out I believe is from rings allowing pressure by them adding to crank case pressure.   Going add venting and see what happens in round 3
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P3R Crank - Updating the 120r
« Reply #57 on: August 17, 2017, 08:28:06 PM »
Cases are back,

Oil pump, cams, new tensioners installed and ready to go.

Timken is in and oilers reinstalled.

Cases go together tomorow and the mockup starts.    Had to wait on a 12 dollar washer for the center screw of the cases.   





« Last Edit: August 17, 2017, 08:33:45 PM by Unbalanced »
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Re: P3R Crank - Updating the 120r
« Reply #58 on: August 17, 2017, 08:31:17 PM »


Found pitting on the exhaust valves for the S&S heads :(.  Intakes were fine.   Expensive exhaust valves for the S&S Motor.   John said 60 bucks a piece cause their made from Inconel ???   The 120r heads were fine.
« Last Edit: August 17, 2017, 09:45:27 PM by Unbalanced »
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Re: P3R Crank - Updating the 120r
« Reply #59 on: August 17, 2017, 10:47:38 PM »
2nd P3R Crank being cut
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