gearhead437
Well-Known Member
- Local time
- 11:27 AM
- Joined
- Jan 11, 2020
- Messages
- 277
Dear Fellow Gearheads-After checking my HF inch pound torque wrench and 1/4" socket adapter, I am wondering if anybody has any feedback on assembling a California Engines Pk 80 kit.
Broke two studs on my 49cc Grubbee years ago and it was not fun replacing those. Ending up tossing the torque wrench and using mechanics feel. Lasted until it was stolen.
I realize that the studs have to bottom out, otherwise one can get a false reading. I also know that Loctite or oil can also cause a false torque reading. Does anyone know what size the Acorn nuts are on the California Pk80 engines and if one needs a long metric socket?
Although I was told 12 foot pounds, I was going to start with 8, then 10 and then 11 and then stop until I ran it. Then I was going to let it cool off, check for any loose fasteners, and then tighten to 12 foot pounds (144 inch pounds) if needed.
The Bikeberry 66 cc assembly video recommends "snug" for torque value and perhaps this is to prevent people from overtightening? Heck, I just discovered that most engines are NOT shipped assembled due to liability issues and that one must ensure that the piston ring gaps face the intake port and not the exhaust port, correct?
There are pressed in pins that ensure that the rings are staggered, but if the piston is inserted in the jug incorrectly, regardless of the arrow, the rings can break from hitting the exhaust ports, correct?
I know about the piston arrow needing to point to the exhaust port, but there could be an issue with quality control and the arrow is stamped on the wrong side, not that China products have QA issues
Anyway, I appreciate any detailed feedback from anyone that has had to deal with this particular engine kit, okay? TIA-Gearhead437
Broke two studs on my 49cc Grubbee years ago and it was not fun replacing those. Ending up tossing the torque wrench and using mechanics feel. Lasted until it was stolen.
I realize that the studs have to bottom out, otherwise one can get a false reading. I also know that Loctite or oil can also cause a false torque reading. Does anyone know what size the Acorn nuts are on the California Pk80 engines and if one needs a long metric socket?
Although I was told 12 foot pounds, I was going to start with 8, then 10 and then 11 and then stop until I ran it. Then I was going to let it cool off, check for any loose fasteners, and then tighten to 12 foot pounds (144 inch pounds) if needed.
The Bikeberry 66 cc assembly video recommends "snug" for torque value and perhaps this is to prevent people from overtightening? Heck, I just discovered that most engines are NOT shipped assembled due to liability issues and that one must ensure that the piston ring gaps face the intake port and not the exhaust port, correct?
There are pressed in pins that ensure that the rings are staggered, but if the piston is inserted in the jug incorrectly, regardless of the arrow, the rings can break from hitting the exhaust ports, correct?
I know about the piston arrow needing to point to the exhaust port, but there could be an issue with quality control and the arrow is stamped on the wrong side, not that China products have QA issues
