Really??? Can we make an OLD SCHOOL MOTO forum that doesn't have Liquid Cooled, Single Shock, Power Valved, double Disk Braked bikes please? There has been no innovation since 1989. None! Just "refinements" and cheater 4-strokes with twice the displacement ... more »
Added reply in a thread 1980 Yamaha YZ175... 9/15/2015 6:20 AM
Max, I've thought of that too, but I get a little nervous putting so much heat into a precisely machined cylinder like a fork lower. With my luck it would end up binding at the end of the stroke or something! Both components changed in about 81 or 82. ... more »
Added reply in a thread 1980 Yamaha YZ175... 9/14/2015 12:48 PM
Hey Mike P. Sweet bike! I've got a '79 YZ125 that I race and I've got a DLS front brake for it. I'm intrigued by your setup. I was waiting to machine a plate to relocate the 3:00 slot to the 1:00 position, but I see you went ahead and installed it with ... more »
Added reply in a thread 1980 Yamaha YZ175... 6/10/2015 8:14 PM
Looking at my 125J, I would have to make a governor cover plate and eliminate the water pump. This is easy stuff and can be done with regular people's tools (I'm a machinist but sometimes I revert to the die grinder and hack saw when I don't have access ... more »
Added reply in a thread 1980 Yamaha YZ175... 6/10/2015 9:21 AM
It's right side ignition, right? Spins clockwise? If they're on the same side, then yes. Yamaha has used the same backing plate mounts and shaft taper forever.
Added reply in a thread 1980 Yamaha YZ175... 6/10/2015 8:23 AM
I'm not sure, but being a yamaha, it's a good chance. Take a look into partzilla and compare shaft end bearings and such...
Added reply in a thread 1980 Yamaha YZ175... 6/10/2015 6:29 AM
If it were me, I would look into using the IT motor, cases etc, and drop the YZ125 close ratio trans into it if possible. If you want the 175 motor to wring out like the 125, then you will need to raise the exhaust port a little and rework the head for ... more »
Added reply in a thread 1980 Yamaha YZ175... 6/9/2015 5:36 AM
Which rod is longer? If the YZ rod is longer, you could keep it and make a spacer to lift the cylinder so the piston meets the deck of the 175 cylinder. Or mill some off the top and bottom of the cylinder to get correct deck height. You'd have to adjust ... more »
Added reply in a thread Project Impossible? - updated 5/12/2015 12:01 PM
Amazing work Heck! That pipe looks absolutely gorgeous!
Added reply in a thread Bike recovery at Diamond Don's? 4/22/2015 10:16 AM
I think his bike came out a little cleaner than you're KDX, Sir Roostalot! That's a great war story.
Added reply in a thread 82 or 83 Rm 125 silencer ? 4/22/2015 10:11 AM
Looks great! I just picked up an '82 myself. I think the silencers were different between those years... Different placement of the pipe-to-silencer joint. So I think you lucked out with that purchase!
Added reply in a thread 90's bikes? 4/15/2015 9:42 AM
This may be the sad truth. I didn't think about that when I started my ornary rant.
Added reply in a thread 90's bikes? 4/13/2015 4:44 AM
That's a great point. The reason I started this post wasn't to stir the pot or be a troll. I guess I was just looking for some convincing, since a lot of bikes I see on here just seem "new" to me.
Added reply in a thread 90's bikes? 4/10/2015 8:17 AM
All good points except that I'm talking about 90's bikes, not that '87 that you posted. IMHO, this '95 YZ125 isn't much different (looking) than the 2015 that you posted. Minor tech upgrades...Smaller bearing here larger axle there, wavy rotors and new
Added reply in a thread 90's bikes? 4/10/2015 6:32 AM
Sorry for the rant. I do get it and I do realize that my avatar is me on my Mono shocked, disk braked 490. AND I just bought a 1982 RM125. My first liquid cooled bike in 20 years. I guess I'm just nostalgic about the 70's and 80's when most of the really ... more »
Added a comment about member blog Racing the 500 GPs (part 6) 3/24/2015 9:26 AM
Added reply in a thread YZ125 1979 Race build 3/13/2015 6:13 AM
I did drill the reed stops. Having no access to a mill at the time, they came out OK, but not perfect. I worry about the reeds opening too far and fraying from hitting the insides of the reed cavity. I guess I'll have to see what it looks like when it ... more »
Added reply in a thread YZ125 1979 Race build 3/12/2015 6:56 AM
I dug out the old RF Boost Bottle out of the spare parts bin and cleaned it up a bit. Thanks to Fastguystuff for making these decals too!
Added reply in a thread Just picked up a kx 125, what do you guys think? 2/24/2015 10:11 AM
Looks like a new bike to me... Nice score, but is that really Old School??? OTOH, I guess I'm just being cranky. It's a two stroke and we need to support our fellow oil burners. That is a sweet ride.
Added reply in a thread YZ125 1979 Race build 2/4/2015 9:45 AM
That's definitely it. Thanks! Only problem is I don't have a cool WB sticker that says "Monoshocks" underneath. Actually haven't seen one before, but now I see it in the old school picture too.