Norvel 061 connecting rod (have you checked yours?)
05-12-2005, 08:38 PM
#1
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Norvel 061 connecting rod (have you checked yours?)
I bent the rod on my .061 doing things I shouldn't do - thats another story...
However, when my replacement parts came I noticed something curious. If you take a look at the lower bushing on the rod you will see that the lubrication hole is on opposite sides, indicating to me that the rod was installed differently in the two pistons.
I had a problem. Which one is correct?
A. The original
or
B. The replacement
The correct answer is C. Both of them. I talked with one of RCU's local experts and he said that he suspected the replacement is a better configuration but either will work AND it just so happened that Justin the Norvel Tech at SigMfg.com said the exact same thing. Justin stated that he tries to install it with the lube port on the leading side of the bottom of the stroke but they don't always come that way.
Weird. I would think the designers would have a preference. Anybody have an opinion?
However, when my replacement parts came I noticed something curious. If you take a look at the lower bushing on the rod you will see that the lubrication hole is on opposite sides, indicating to me that the rod was installed differently in the two pistons.
I had a problem. Which one is correct?
A. The original
or
B. The replacement
The correct answer is C. Both of them. I talked with one of RCU's local experts and he said that he suspected the replacement is a better configuration but either will work AND it just so happened that Justin the Norvel Tech at SigMfg.com said the exact same thing. Justin stated that he tries to install it with the lube port on the leading side of the bottom of the stroke but they don't always come that way.
Weird. I would think the designers would have a preference. Anybody have an opinion?
05-12-2005, 11:24 PM
#2
RE: Norvel 061 connecting rod (have you checked yours?)
Sometimes I wonder about how much actual R&D goes into these engines. Does the oil hole really contribute to longevity, or does it create a weak spot? If you want to see something sloppy, look at the mill work in the underside of the piston and compare it to the wrist pin axis........not even close to being square.
05-13-2005, 08:19 AM
#3
RE: Norvel 061 connecting rod (have you checked yours?)
ORIGINAL: combatpigg
<snip> .....
look at the mill work in the underside of the piston and compare it to the wrist pin axis........not even close to being square.
<snip> .....
look at the mill work in the underside of the piston and compare it to the wrist pin axis........not even close to being square.
If you were you referring to the notch in the skirt -- that's a clearance notch for the backplate. If it were something else, then ignore my rantings -- coffee hasn't kicked in sufficiently.
05-13-2005, 10:48 AM
#4
RE: Norvel 061 connecting rod (have you checked yours?)
No, I mean the cut out for the top of the rod, where it inserts into the piston. I have made a couple of my own NORVEL pistons, using theirs' as a model, and thought it was pretty haphazard to see their crooked work.
