oilway in early triple motor

[mauricejota7604]

I have seen people talking about that lack of an oilway in the early triple motors to feed the primary can anyone tell me if they have drilled a hole low in the case to allow oil to flow to the primary?
Thanks M.

 

[jotacorsa]

yes, in same position as later production

 

[Scrumpy]

Is that additional hole in the case seen as a "must have" by the experts?

There was a recent thread on this subject. Not sure if the thread was dedicated to this or the subject evolved as the thread progressed.

Scrumpy

 

[Vince]

Do a seach on my name and THAT thread should come up,it was about a month ago

 

[Dellortoman]

G'day Maurice, Stefan

Here's the earlier thread http://laverdaforum.com/forum/index.php/topic,81600.0.html

Don't drill a lower hole. It won't fill the primary case, it'll actually drain oil out of the primary case because the sump oil level is lower than the oil level in the primary case.

Early models relied on the chain running in an oil bath in the primary case. Oil finds its way into the primary case via the feed to the left side main bearing and fills it up to the level of the hole. Later models had oil feed to the primary chain, so don't need the primary case to be full of oil, which is why they have a lower drain hole.

Cheers,
Cam

 

[Vince]

There is a quite strong jet of oil aimed directed right at the chain in at least 120 Jotas with fast flow into the main case,both systems work but mixing between either the slow to fill and drain earlier method and the direct squirt and fast drain to sump later method could be a problem.

 

[mauricejota7604]

Where is this direct jet of oil on a 120?
M.

 

[Vince]

Its high on the primary case and towards the front,squirts on the upper chain run,Will did lots of presurising the drillings with an pump type oil can and found it on his 120 Jota,he did a post under Jugs a while ago,I think he did some pics with it.

 

[Dellortoman]

Here's the thread Vince referred to, with Will's post about the primary chain lubrication:
http://laverdaforum.com/forum/index.php/topic,80316.msg128753.html#msg128753

 

[mauricejota7604]

My 120 Jota motor has no oil jet to feed the primary chain?
M.

 

[Vince]

Maurice have you looked at the pic posted on the link 3 posts back,does you bike not have the same drilling in the pic,there is a strong stream of oil being squirted out of the inner primary case wall

 

[breganzane]

Maurice,
The hole is VERY small, perhaps only 0.5mm or so, you really have to look for it.  They obviously didn't want to lose too much of the near-zero oil pressure by having any larger port so close to the pump.
Cheers
Steve B