Lest you be thinking that the R90S has not been out much this summer, the reverse is true. It has been out a bunch on routine runs to Home Depot, and a MAC PAC breakfast or two. It even did a work commute one day. It has a finnicky ignition switch, which I need to look at this winter, but the bike runs better and better each time I take it out. It seems to really like the octane boost that I throw in it periodically, so I’m sure the winter blend gas that is beginning to show up will make it a challenge to find the good stuff that it likes. There have only been a couple of minor issues to contend with. The first is the mirrors. There is no position where they work effectively for me, so I have positioned them as well as possible for now while I figure out alternatives. The second is the squeak that I thought was the air breather valve, but it is not. You only hear it at idle warmed up, so it is another item to be tracked down.
On your '74 R90S, clockwise, do you need a functional, dependable (quartz, new style), or do you want the "holy grail" undependable, mecanical" (white numeral) original unit? I may have a clock for you. Mirror wise, I went with the later ('85-on) black,no locknut,easily adjustable on the fly, and reversable units (plastique) Squeek wise, the noise may be the rear main seal causing the old style "disc type" breather to "gobble". The crankcase, which is a big air compressor, really, may be intaking air from the front seals (alt./crank, and cam/points), or piston blowby, are creating too much air for the oldstyle breather to function. If you haven't changed the uriganal rear main (white, single lip with spring), this might be a good time, as they have gone thru a couple of major improvements. the newest has a brown inner lip (teflon) and has 4-5 sealing ribs, which seem to not cause condensation (corrosian). The new style "reed type" breather is the simplest, most effective fix. There is a new style "vertical exhaust' type cover with hose, that helps the "flo" if you can find it still.-Robert Caruthers P.S. If you're really interested, I may be selling a '66 crewcab I restored 10 years ago. It will go 75mph, and has front disc brakes, almost no rust, with undercoating, and retractable sholder harnesses. I'm looking for a new Ford Transit Connect van, which has airbags.
On your '74 R90S, clockwise, do you need a functional, dependable (quartz, new style), or do you want the "holy grail" undependable, mecanical" (white numeral) original unit? I may have a clock for you. Mirror wise, I went with the later ('85-on) black,no locknut,easily adjustable on the fly, and reversable units (plastique) Squeek wise, the noise may be the rear main seal causing the old style "disc type" breather to "gobble". The crankcase, which is a big air compressor, really, may be intaking air from the front seals (alt./crank, and cam/points), or piston blowby, are creating too much air for the oldstyle breather to function. If you haven't changed the uriganal rear main (white, single lip with spring), this might be a good time, as they have gone thru a couple of major improvements. the newest has a brown inner lip (teflon) and has 4-5 sealing ribs, which seem to not cause condensation (corrosian). The new style "reed type" breather is the simplest, most effective fix. There is a new style "vertical exhaust' type cover with hose, that helps the "flo" if you can find it still.-Robert Caruthers P.S. If you're really interested, I may be selling a '66 crewcab I restored 10 years ago. It will go 75mph, and has front disc brakes, almost no rust, with undercoating, and retractable sholder harnesses. I'm looking for a new Ford Transit Connect van, which has airbags.
Robert, thanks for your comments. I do have the newer reed type breather installed, so the issue is elsewhere. I missed your comments for some reason, so I will followup on the crewcab. Cheers.