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Added reply in a thread YZ125 1979 Race build 12/19/2014 7:25 AM

I eliminated the spacer on my shock during rebuild. It's got travel now!

Also running '79 forks and triples... The spacer that needs eliminated is just below the adjustable wrench in the pic below. That's the only difference between ... more »

Added reply in a thread Gyro Gearloose 12/17/2014 4:40 PM

Agreed, $140 is a screamin deal for a trick scoop. I wonder how durable it is. More than the plastic stocker? I've dumped my 490 on the left side more times than I can count, but the scoop hasn't gotten torn off like I expected.

Added reply in a thread Gyro Gearloose 12/17/2014 1:02 PM

I can't ride my 490 fast enough for the scoop to make a difference. But I keep it on there "for looks" hahaha

Added reply in a thread YZ125 1979 Race build 12/17/2014 7:42 AM

Interesting. Although I'm glad it's not something I have to worry about now. Sorry to hear about your career ending ride. YamaHOP suspension was a real problem back then. I don't recall of it was a packing issue or just because nobody had figured out ... more »

Added reply in a thread YZ125 1979 Race build 12/17/2014 7:00 AM

How was the '78 shock better than the '79?

Added reply in a thread YZ125 1979 Race build 12/16/2014 5:20 AM

Thanks MD! Yeah, I'll keep her around for permanent. I've got a lot into her, mostly labor, but all that I've done can't be appreciated as much by anyone else but me. A true labor of love. Great bike. Can't wait to dig into the motor in a couple months. ... more »

Added reply in a thread paint removal? 12/5/2014 9:39 AM

Laquer thinner works great too. Make sure to do a test spot first though. It shouldn't harm plastics or anodizing, but may take off factory paint.

Added reply in a thread 1980 Yamaha YZ175... 11/28/2014 11:47 PM

Awwwe, That sort of sucks SBH. I just took another look at the YZ125J and I really like the ergo's. I can't wait to start building it with my stepson and go racing with him. I do really like my '78 YZ125 for ergo's too though. Just realy different bikes... ... more »

Added reply in a thread 1980 Yamaha YZ175... 11/28/2014 11:58 AM

I hadn't thought about EXH port bias. The '81 is side port. But in '82 they switched to Center Port and kept it thru '84. '85 is when they stroked it from 50 to 57mm. Bore x Stroke 1982 YZ125: 56 x 50mm '8~ '84 IT175: 66 x 50mm IT200: 66 x 57mm Looks ... more »

Added reply in a thread 1980 Yamaha YZ175... 11/28/2014 8:02 AM

Maybe I had it backwards... I will have to do more research. My '82 that I'm thinking about converting to an air cooled 175.. I was thinking that I'd have to swap cranks for longer stroke, and top ends for air cooling. If I can use the same crank, that ... more »

Added reply in a thread 1980 Yamaha YZ175... 11/24/2014 2:25 AM

The 175 is basically a 125 motor stroked (same bore). Then the 200 is the 175 motor bored (same stroke). IIRC. EDIT (this is wrong and has been corrected below) Thanks SBH!

Added reply in a thread 1982 Yamaha YZ60 11/19/2014 5:11 PM

It's never too late to have a happy childhood! I'll founda vid of me a few years ago riding it. Can't even get into the powerband. But it's got OK low end for a mini. http://youtu.be/TML6GY5aiCM http://youtu.be/TML6GY5aiCM

Added reply in a thread 1982 Yamaha YZ60 11/19/2014 8:19 AM

"You think it's fast now? Swap an 81 YZ80 motor in it... " I kept the 60 lower end. YZ80 top end bolts right on. Lightened the crank, stuffed the cases, installed internal rotor YZ80 ign, did a ton of cylinder work, running a yz80 pipe, reeds, carb, ... more »

Added reply in a thread 1982 Yamaha YZ60 11/18/2014 4:58 PM

Hahhh! I thought that looked like a 3R0 front fender! Yep, ebay may get you some cash for it. You could also try Marks Vintage MX site. That's always great for making connections with similar owners. Where did you get the new plastic? Are you going to ... more »

Added reply in a thread 1982 Yamaha YZ60 11/18/2014 1:46 PM

These truely are great little bikes. I've got a 1980 YZ50, 1981 YZ60 and a 1983 YZ60 that's modified to keep up with modern pit bikes. I ride my 1983 all the time, following my kids around. They do scream! Plastics are somewhat rare, but easier to find ... more »

Added reply in a thread Name The Track 11/13/2014 10:53 AM

Still there... North of the highway, west of town. Looks like K-9 Kampus is right in the middle of the track. Looks like some of the track is still there too.

Added reply in a thread Name The Track 11/13/2014 9:37 AM

I wonder how many VitalMX'ers are zooming in on Google Earth right now. That track looks amazing. Would be cool if it weren't all condo's by now. Someone post a pic of the area please.

Added reply in a thread New to me 1980 CR125R 11/13/2014 9:31 AM

My first real job was in a machine shop. Took machining in high school too. Machined and welded for years after school until the US Army got ahold of my 19 year old drunken ass. I was making good money and having a little too much fun! Now I'm an engineer,

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Added reply in a thread New to me 1980 CR125R 11/13/2014 6:53 AM

Whoa! That swingarm is sick! Does anyone in the rest of the planet use that terminology? Sick Dude! That means like Touched, like Mental, like Wicked Pissa.... Tooling for that thing would cost 5-10 times what the actual piece costs I bet (including

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Added reply in a thread 1980 Yamaha YZ175... 11/12/2014 10:34 AM

Hey Mike. I just PM'd you. Need help with a similar build: Thinking about 175 crank, top end, clutch cover in a '82 YZ125 motor.... Any thoughts?