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Announcements / Update
« Last post by admin on Today at 11:41:28 AM »
Updated the discussion board to latest version, let me know if anything broke.

175 & 200 Talk / Bypass Oil pump and run premix?
« Last post by jjwithers on Today at 03:27:57 AM »
I'm starting to pull my hair out dealing with the leaks and questioning if the oil pump is working. I'm still running premix because I am breaking the engine in. 
My right side smokes a bit.  I think its getting too much oil because of the black goo coming from the pipes.
Can I keep running premix and skip the injection pump? or does that pump send oil in places the premix doesn't get to. 

50, 60, 90 & 100 Talk / Re: Where is 100 TMX specific manual?
« Last post by moonpup on Yesterday at 10:42:18 PM »
50, 60, 90 & 100 Talk / Re: Where is 100 TMX specific manual?
« Last post by moonpup on Yesterday at 10:40:42 PM »
Thought I'd post this to this thread despite it's age so that future "searchers" might find it.

This is a TMX/GP specific parts supplement that I got with some other manuals.
350 Talk / Shout Out to Steve Reed
« Last post by nysz1b on Yesterday at 12:14:57 PM »
Just want to give a"shout-out" to Steve Reed who removed the (redundant) crank end seals from my  '67 GTR crank. He also replaced the rotary valve seals, and installed new shift drum springs. Now I can get serious on this restoration. Hope to have the bike on the road by late summer. Will post photos of the progress. Thanks again, Steve!

350 Talk / Re: 1971 GTR 350 Not Shifting
« Last post by BRT-GTR on Yesterday at 10:27:36 AM »
           Something similar has been reported before but the cause was never fully pinpointed, see here :-
       A few long shots :-
       Could the crankcases be distorted ?  This could happen if they have been bolted up with a knock pin not seated in the bearing recess, particularly the one that locates the smaller needle bearing on the gearbox output shaft. It's close to the shift dum. Any evidence of the knock pins being pushed down, cracked boss below ?

      Are the bearing 'c' rings correctly located. The 3 thicker ones look very similar but one of them is slightly larger diameter and goes on the right side of the crankshaft. The other two fit the 6305N bearings for the gear box.

     It has recently come to light (to me), via an article in the VJMC magazine, that the modern spec for the groove machined into Ntype bearing outer ring has changed since the late 60s when our bikes were built.  The groove is now narrower and the BS 'C' ring will not fit, being too thick ( checked on some modern KOYO 6305N gearbox bearings, I've recently bought). Article referred to the 6205N bearing  for a Kawasaki  H1 clutch shaft. The thin outer rim of the modern bearing had been broken off by the old 'C' ring being forced into the groove when the cases were bolted together.
    This could distort the cases and jam the shift drum if modern 6305N bearing is used with original 'C' ring on a BS 350 engine. Something to be aware of and bear in mind.                                                                   Brian.
350 Talk / Re: 1971 GTR 350 Not Shifting
« Last post by Bridgestoneboy on March 18, 2018, 04:30:47 PM »
 For starters I'd like to thank everyone who has provided some feedback on what the issue might be. Since then I have double checked everything but I am somehow still having the issue. It seems that it will not shift once the cases are pressed together, even with the shift drum alignment bolt loose and not overtightened. Even with the bolts just snug, nothing more, it binds up and will not shift. Of course I'm am attempting to shift the gears by hand but I am constantly rotating the transmission as I shift through the gears so I don't think it's as simple as the gears not locking into each other. I am lost at this point  :o Thoughts...?
Chibi, Tora, Taka Talk / Re: converting rotary transmission to return-type
« Last post by OldSwartout on March 17, 2018, 06:46:33 PM »
The SR175 just had the guide pin in the 5th gear shift fork permanently pinned inward to the shift drum groove, preventing the drum from rotating past fifth, as if the external lever on the DT175 was in the return shift position. Nothing more than a drilled hole in the fifth gear shift fork and a cotter pin.
175 & 200 Talk / Re: Parts availability - in the UK.
« Last post by OldSwartout on March 17, 2018, 06:40:33 PM »
I thought so.
175 & 200 Talk / Re: Parts availability - in the UK.
« Last post by mybridgestones on March 17, 2018, 04:18:12 PM »
Yes Karl, you're right - i actually meant that.
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