Connecting rod oilway

pierodn · Sep 30, 2016

Hi.
The connecting rids dont have the oilway.
I have bought the new conrids shells that have the oilway.
Is better to machine the oil way to the conrods?
What is the measure of the hole?
Thank you
Piero

Mike B · Oct 5, 2016

I think I would be more concerned with what conrods are in that engine, as they can not be original, as they all came with oil holes. If someone put earlier Norton rods in the engine without oil holes, then I believe those rods are weaker and should not be used. If they are an aftermarket rod, then they may, or may not be ok. The oil holes themselves are not important. In any case, do not modify the ones you have!

Mike B.

pierodn · Oct 5, 2016

Hi Mike,
The conrods are stock, the numbers stamped on are those original.
Any way, the conrods of my Atlas didnt have the oil way.
Ciao
Piero

Mike B · Oct 6, 2016

I believe the rods with the squirter holes came out with the high volume oiling system (six start oiling system), which was the early part of 1966. An Atlas made before that should have the plain rods, and P11's of course came out in 1967. I don't know the answer, but something is incorrect.....got pictures?

Mike B.

lcrken · Oct 6, 2016

Correct, at least according to Roy Bacon. His book states that the oil holes were added in 1966. It's been pretty well established since then that the oil holes are not necessary. Lots of miles put on engines with Carrillo rods with no oil holes, with no issues.

Ken

texasSlick · Oct 6, 2016

lcrken said:
Correct, at least according to Roy Bacon. His book states that the oil holes were added in 1966. It's been pretty well established since then that the oil holes are not necessary. Lots of miles put on engines with Carrillo rods with no oil holes, with no issues.

Ken

File in FWIW Department:

I suspect there were special factory builds intended for the race track that incorporated six start oil pumps and con rod squirt holes well prior to 1966. The only evidence I have for this suspicion is my factory new Atlas, dispatched from factory May 1962, had a six start pump and squirt holes. I reason it was built for the track, but somehow got released into the main distribution. There are several other anamolies about the bike that lend credence to this hypothesis.

I agree with Ken ..... the squirt holes are not necessary.

Slick

grandpaul · Oct 7, 2016

texasSlick said:
I suspect there were special factory builds intended for the race track that incorporated six start oil pumps and con rod squirt holes well prior to 1966. The only evidence I have for this suspicion is my factory new Atlas, dispatched from factory May 1962, had a six start pump and squirt holes. I reason it was built for the track, but somehow got released into the main distribution. There are several other anamolies about the bike that lend credence to this hypothesis.

Did you own the bike from new? Or do you have indisputable provenance of it's originality in the state you describe?

pierodn · Oct 7, 2016

Hi.
In 1968 i was 11 old, i cannot be the first owner.
Ciao
Piero

texasSlick · Oct 7, 2016

grandpaul said:
texasSlick said:

I suspect there were special factory builds intended for the race track that incorporated six start oil pumps and con rod squirt holes well prior to 1966. The only evidence I have for this suspicion is my factory new Atlas, dispatched from factory May 1962, had a six start pump and squirt holes. I reason it was built for the track, but somehow got released into the main distribution. There are several other anamolies about the bike that lend credence to this hypothesis.

Click to expand...

Did you own the bike from new? Or do you have indisputable provenance of it's originality in the state you describe?

I have owned from new. NOC records state bike dispatched to Berliner May 1962. I bought April 1963. Why it took 11 months to cross the pond and get to a dealer is another mystery.

I wish someone could clear up the mysteries about this bike.

Slick