Willys Jeep CJ2A -46 project | Governor things |
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PLO
Member Joined: 28 Sep. 2016 Location: Sweden Status: Offline Points: 48 |
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Good afternoon! (Swedish time)
I have now awakened the Jeep and started to disassemble the engine. Got comp issues at the end of last summer. But I am stuck trying to figure out what dimension of the pistonrings and bearings I have. Is there anyone here who knows? Im going to replace with new. These are the pistons in the engine. And these are from my other engine on the side. What size is that? Bearings, is it standard dimension? Edited by PLO - 22 Mar. 2020 at 7:10pm |
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Ol' Unreliable
Member Joined: 25 Sep. 2016 Location: CO Springs CO Status: Offline Points: 4226 |
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Not sure about the bearings, but the piston in your hand appears to be about .050" oversize, if it is reading "80.60". I presume that's 80.60 mm, which is 3.173". Close to .050" over if a standard piston is 3.125". The second piston with the "030" stamp is .030" oversize, so that piston should be 3.155", or close to 80.09 mm. In other words, both those engines have been bored, possibly more than once each.
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There's a reason it's called Ol' Unreliable
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Bruce W
Member Joined: 29 July 2005 Location: Northeast Colorado Status: Offline Points: 9611 |
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Standard bore is 3.125", standard piston diameter is 3.1225" - 3.1245".
It's all on page 54 of the Service Manual for Universal Jeep Vehicles. You do have a service manual, right? So, yeah, .050" oversize would be 3.1725" - 3.1745". BW
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It is NOT a Jeep Willys! It is a Willys jeep.
Happy Trails! Good-bye, Good Luck, and May the Good Lord Take a Likin' to You! We Have Miles to Jeep, Before We Sleep. |
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PLO
Member Joined: 28 Sep. 2016 Location: Sweden Status: Offline Points: 48 |
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Thanks guys for making it clear. Im going to order .050” pistonrings if the piston is around 80.60mm. Yeah your totally correct Bruce W, I have service manual but I was not 100% sure I got it right, not use to inches
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Bruce W
Member Joined: 29 July 2005 Location: Northeast Colorado Status: Offline Points: 9611 |
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PLO said, "Yeah your totally correct Bruce W, I have service manual......"
Actually, I was diggin' on Ol' Un about it more than you. BW
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It is NOT a Jeep Willys! It is a Willys jeep.
Happy Trails! Good-bye, Good Luck, and May the Good Lord Take a Likin' to You! We Have Miles to Jeep, Before We Sleep. |
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PLO
Member Joined: 28 Sep. 2016 Location: Sweden Status: Offline Points: 48 |
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Measurement update today.
I've measured pistons, crankshaft and cylinders So the following was the result: Pistons 80.58mm (3.172") Cylinder bore 80.70mm (3.177") Crankshaft 48.20mm (1.898") I was checking the service manual but could not find the standard dimension on the crankshaft. What dimension on the connecting rod bearings should I order to fit 48.20mm (1.898")? |
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Bruce W
Member Joined: 29 July 2005 Location: Northeast Colorado Status: Offline Points: 9611 |
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Page 55, almost halfway down, under CRANKSHAFT:
“Crankpin Journal Diameter........ 1.9375” to 1.9383” “ Yours are .040” undersized. Maybe you’re not used to the term “Crankpin”. BW
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It is NOT a Jeep Willys! It is a Willys jeep.
Happy Trails! Good-bye, Good Luck, and May the Good Lord Take a Likin' to You! We Have Miles to Jeep, Before We Sleep. |
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PLO
Member Joined: 28 Sep. 2016 Location: Sweden Status: Offline Points: 48 |
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Amazing! Thanks. No I had no idea, crankpin.. haha. Now im going to order the parts. |
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Ol' Unreliable
Member Joined: 25 Sep. 2016 Location: CO Springs CO Status: Offline Points: 4226 |
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Hey, I downloaded a copy of the service manual. I have it here...somewhere...
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There's a reason it's called Ol' Unreliable
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PLO
Member Joined: 28 Sep. 2016 Location: Sweden Status: Offline Points: 48 |
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I ran in to some issues with the pistons so it took longer than expected..
They looked wierd with 3 pistonrings instead of 2. So I also orderd new pistons to match the pistonrings I bought. But now everything is working and its up and running with new pistons, rings and bearings. So its ready for the summer and some new problems haha! Is this normal with 3 rings instead of 2? |
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Ol' Unreliable
Member Joined: 25 Sep. 2016 Location: CO Springs CO Status: Offline Points: 4226 |
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If I recall correctly, there is not supposed to be a ring in that top groove.
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There's a reason it's called Ol' Unreliable
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PLO
Member Joined: 28 Sep. 2016 Location: Sweden Status: Offline Points: 48 |
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Hi everyone!
I came across this King Seeley governor. (Serial 26510-400) From what I understand this is the variable speed version. I have the rest of the parts needed to get this to work except mounting bracket, carburetor linkage, hand pulley and a belt. So if you have anyting of this, im happy to buy it! Send me a PM
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