Two stroke oil Banjo bolts

[oilman]

Whats up with these banjo bolts for the two stroke oil. They have a little jet like thing at the lower end. But as far as I can see on my S2 the oil transfers at the big holes on the "top" hex end. were these bolts borrowed by Kawasaki from another application?

[III]

Apr 5, 2015 14:07:58 GMT -5 oilman said:

Whats up with these banjo bolts for the two stroke oil. They have a little jet like thing at the lower end. But as far as I can see on my S2 the oil transfers at the big holes on the "top" hex end. were these bolts borrowed by Kawasaki from another application?

If you think about the actual amount of oil that travels through that bolt over a minutes, or even a seconds time, that little opening at that end is plenty big enough and probably overkill compared to the consumption rate.

Plus if the design was poor we would all be using something different right???

[oilman]

You miss what I'm trying to say. The small hole at the very bottom end seems to go nowhere. Perhaps on some of the bigger triples there is a separate oil gallery to the main bearings? On the S2 it looks as though there is only one gallery which leads to the intake port. I have no issues with the size. It seems the right size. If it went somewhere.

[shiloh]

If I`m reading this right, the big hole(s) near the hex end receives oil from the lines, the little one at the other end allows oil into the engine.
Thats the way it is on my S2, and it works.

[JA-Moo]

Not a big deal, the bolts are just the same for the triples. The jets are for the H series, no need to make other ones for the S series.....

[oilman]

Thanks Ja-Moo. I was thinking it must be something like that. I was having panic attacks that there was some hidden passage I could not find.

[JA-Moo]

The S series just don't have the oil passages to the left bearings like the H series.

[oilman]

Well I made up this little contraption to measure oil pump output. I also took time to clean out the oil tank and change the feed hose.






I found that the oil pump seemed ok wide open. But I could not detect any oil flow at 2500 rpm or lower. I spent some time trying to adjust the cable. Then swapped out the pump for another old one I have. The second would put out a tiny amount of oil at 2500. But I think it might take days to get the 3-4 ml per 3 min. the manual was talking about.

I think until I find a better pump I will be going pre-mix. I know I'll hear complaints about that. But I firmly believe in the KISS system. The stock oiling system is not my definition of KISS.

As an aside.

1: Does anyone have tips on how to produce more smoke? Is there an aftermarket super smoke oil brand? All I can find on the net is a bunch of wankers trying to stop there 2-smokers from smoking. WTF?

2: Can I get away with drilling a tiny hole at the lowest point in the chambers. It would save me taking the pipes off to drain after every ride.

[Curtis]

Castrol super 2 stroke for oil

[shiloh]

Hi, my s2 pump had the same symptoms, if you carefully disassemble the pump, laying the parts out as you go(makes it easy for re-assembly), you`ll notice there`s not much to it, except some O-rings etc. Replace those with appropriate sized ones, and it`ll probably work fine, as mine did; Unless you notice a lot of wear, then it should be replaced
.
Be careful re-attaching the lines, the threads strip real easy.

PS: Klotz bean oil makes smoke and it smells nice, or some big red if you can find it.(probably not made anymore)
     But if you make toooo much smoke you`l prob get pulled over by some tree hugg`n  Green bean.

PSS;  I think you could drill your chambers for draining, and use a small screw to plug the hole, I was thinking of doing the same thing.

[oilman]

Thanks Shiloh. I'll have a go at rebuilding the pump eventually. Although my research (all 3-5 min. of it) points to the S series as being premix friendly. So the pump is a little ways down on the list.

I got hailed by someone at a stop light a few years ago. "Hey buddy nice exhaust!", at that moment I knew I had arrived.

[speedgeeza]

Is oil pooling in the pipes a common issue then? When I took the Denco pipes off my H2 to clean, quite a pool of oil came out of one of them. Rather surprised. I'd have thought that when everything got hot the oil would have burn't off quicker than it could build up.

[JA-Moo]

The oil pumps are a positive displacement type, and you can't get a more simple design. The only real way it can't produce oil pressure or volume would be stuck check valves. damage to the pump piston, or a blockage in the feed line. Have you checked the screen in the oil tank nipple? Plus the pump pumps almost no oil at low rpm as hardly is needed. There have been multiple instances where motors have gone 70+ miles after they ran out of oil.

[oilman]

Ja-Moo. Initially I did not clean everything. I cut corners. I assumed if the bike was running ok oil wise before.....

But when I started it up for the first time and primed the pump we had that situation with the grey coloured oil on the left cylinder. I popped the jug off and could find nothing wrong. And then decided to give the oiling system a good look over. The check valves seem to be fine. They open, they close and oil does not leak out. I cleaned out the oil tank. There was some sort of white'ish sludge there. No screen at the nipple in my tank. Tank vent is clear. It seems to me it would be easy to get a bit of grit or foreign material in there and plug up a check valve or oil passage in the head. Coming from a mostly dirt bike back ground pre-mixing just seems "safer" to me.

Anyways I'm not planning to ride the bike anytime soon. I am collecting parts off ebay to clean up some of the bits and pieces that I am unhappy with. That will take months. My main goal for this year was to get it back together in case I drop dead or something. I had bits stored in the garage, bits in storage sheds, bits all over the place. I was worried if left to my wife it would all just get hauled off to the dump. So job one is done. The to do list goes something like this. Proper spark wires and plugs, done. New snorkels for my stock air intake, found a guy on ebay selling new ones. just waiting on paypal. I want to convert to a drum front brake. I have a 19" wheel from a CL350 Scrambler. Had it on the bike today. Going to get a local machinist to make up some parts. Not sure about the speedo cable but found new brake cable to order eventually. Debating on new chrome rims or the Akront knock offs. Want to get the spare spark plug holder and tool kit knock offs. At the end of the list is the pump. By the time all this is done it will be winter again.

[oilman]

Apr 15, 2015 14:29:53 GMT -5 speedgeeza said:

Is oil pooling in the pipes a common issue then? When I took the Denco pipes off my H2 to clean, quite a pool of oil came out of one of them. Rather surprised. I'd have thought that when everything got hot the oil would have burn't off quicker than it could build up.

All I know from my limited knowledge. With the old 70's dirt bikes I like, it seems like a good idea to drain the pipe now and then and make sure the muffler / spark arrestor gets cleaned out too.