Hej guys,
thanks for your positive response on my bike and work.....
...reviving the XSJohn thread
Good ideas should be kept in mind and the persons who had them should be mentioned
... nice looking Standard.If it was in North America....
She is a North American, according to my documents registered first 12.12.1977, shipped to Germany in 1991. I own it since March 1994.
Standard...... Little red riding hood
..... Everything I have done, I did in the light of getting it back to stock without welding .... You do not have to weld in the motor, carbs, intake filter assy ........
I have been thinking of mounting a chrome version of that oil cooler to the front motor mount. How did you do it?
I took a steel plate piece (1,5 mm thick), a ruler, a marker, an angle grinder and cut out this layout
Drilled the wholes according to the oil cooler mounting (smaller distance), held it to the motor mount to check the position of the vertical slots in the mount, drilled some holes and fixed it with flathead allen screws
Not really road tested yet, but it feels stiff and stable.
Nice Hydraulic clutch as well.
Both, caliper and pump are stock parts of a Kawasaki GPZ 900. You have to bore out the clutch cover to fit the caliper and adjust the length of the clutch push rod
Caution on opening up the restrict hole.................XSJohn, opened up the hole to the head in conjunction with his oil pump work. Adding a better volume rate allowed for opening up the restriction and running more oil to the head, without compromising the Factory ratio of oil to the head and cases.
2m, has done some work on installing a High Ratio oil pump and opening up the restriction to the head, (keeping factory Ratios), for better lubrication and hopefully a quieter running engine
Okay, I thought i read that John did his mod with the original oil pump and the 0.2 mm larger restriction hole is because of the extra gravity and resistance that is caused by the oil cooler .... but I also read about the Johnism, some kind of special grammar that he used. Maybe I couldn't get all due to the fact that English isn't my mother tongue
....... thanks I will have an eye on that, but I think there is enough reserve in the system.
Why reserve? ... As far as I know the early XS 1 even had a smaller oil pump (6 mm thick) and a 5 mm hole in the banjo bolt, Yamaha changed this configuration to 8 mm at the pump and a 3 mm hole at the banjo bolt. Seems to me that they added an extra reserve to the original design to be absolutley sure about the quantity of the oil flow....
There are some discussions and of course some more opinons about this... my opinion is that the reduction is not only about reducing the oil flow to the head and to have a special ratio head/case, one of the main reasons for me is the Bernoulli effect of the reduction (Imagine to try to balance a table tennis ball on the air stream of a hair dryer, it will always fall to the side and not into the source of the stream). Especially at lower rpm and/or when the oil gets hot, the capacity of the pump is very low. Then the effect prevents the oil from sinking back into the main oil galley.....
But this are just my two pence, I'm just an interested amateur with a more or less good understandig of the pieces that I own for a longer time ... so no guarantee on this .....
Greetz,
Armin[/QUOTE]
