Author Topic: Two connecting rod oil holes  (Read 472 times)

Offline coater87

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Two connecting rod oil holes
« on: 04.10. 2016 02:16 »
 Both my right and left connecting rods have oil holes. Those are the rods that were in the motor in 1971.

 Should I plug the right hand rod, or just let it be?

 What's your thoughts on this?

 I thought my new big end shells would only have one side drilled, unfortunately all four shells have the same hole.

 If you think it should be plugged, how would you go about this?
Central Wisconsin in the U.S.

Offline Rocket Racer

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  • A kiwi with a racing A10 rig and too many projects
    • NZ Classic Sidecar Racing
Re: Two connecting rod oil holes
« Reply #1 on: 04.10. 2016 03:49 »
IMHO You dont want a hole on the timing side rod, but its obviously lasted ok so can't have caused too many problems for you.
On both my A10's (super rocket and alcohol road rocket) neither rods have holes left open.
My suggestion would be to plug both, if you still trust them.
However If its apart might be time to invest in some fresh rods  *eek*.
Forty five year old + rods (in it since '71) and rod bolts don't really sound like an asset to me   *doubt*, but I expect my engines to rev so am not a fan of recycling old rods.
If you keep them I'd be getting them crack tested and shot peined.
Tim
A good rider periodically checks all nuts and bolts with a spanner to see that they are tight - Instruction Manual for BSA B series, p46, para 2.
New Zealand

Offline coater87

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Re: Two connecting rod oil holes
« Reply #2 on: 05.10. 2016 01:01 »
 Ooops,

 I confused you. The rods are the ones that were in the bike in 71 when it was torn apart and left in pieces. Supposedly never rebuilt, which I can believe because everything was on standard.

 Weird that I had two left hand rods though. *conf*

 I had the rods checked over, they are in great condition for 60 year old parts so thats no a concern. Did go with ARP rod bolts though.

 Talking to some of my American bike friends, I got 5 different solutions.

 Peen the hole over on the side I dont want to oil.

 drill, tap and plug the hole

 fill the hole with JB weld

 Dont worry about the hole

 Buy an old Harley instead... *countdown*

 I dont know about any of that. *conf*

Central Wisconsin in the U.S.