I've got a 22r that I'm rebuilding to use with a camden blower.. Just spent $650 on friggin' 8.5:1 forged pistons, so I want to get this darn thing right.
Had the crank checked at a machine shop. Turned out fine, so they polished it and said it was STD/STD size. I assume that's main/rod bearing size.
Ordered a set of engine bearings from www.engnbldr.com - he seems to know a bit about 22r and has had good recomendations. Anyway, I install my crank and main bearings, everything is fine. Crank will turn by hand. Install the pistons, everything is OK, I can turn without major effort.
Now I torque the rod bearnings down, even if just on one rod and the thing will barely turn and requires major effort. So, I supsect that I've got oversized rod bearings on a motor that doesn't need them.. Any other guesses?
I checked the old rod bearnings, other than being a different brand, they are marked STD. The new ones are marked .25, which doesn't particularly make sense.... Maybe I just didn't get what I asked for.
Any way to measure these guys other than plastigauge?
-d
OLD:
Fm
3950CPA
PU
STD
NEW:
C4129 AM
8E 0.25
Maybe .25mm = .010 over? hmmm...
Had the crank checked at a machine shop. Turned out fine, so they polished it and said it was STD/STD size. I assume that's main/rod bearing size.
Ordered a set of engine bearings from www.engnbldr.com - he seems to know a bit about 22r and has had good recomendations. Anyway, I install my crank and main bearings, everything is fine. Crank will turn by hand. Install the pistons, everything is OK, I can turn without major effort.
Now I torque the rod bearnings down, even if just on one rod and the thing will barely turn and requires major effort. So, I supsect that I've got oversized rod bearings on a motor that doesn't need them.. Any other guesses?
I checked the old rod bearnings, other than being a different brand, they are marked STD. The new ones are marked .25, which doesn't particularly make sense.... Maybe I just didn't get what I asked for.
Any way to measure these guys other than plastigauge?
-d
OLD:
Fm
3950CPA
PU
STD
NEW:
C4129 AM
8E 0.25
Maybe .25mm = .010 over? hmmm...