Added reply in a thread FX350- no oil top-end torched! 5/30/2020 7:12 PM

I thought KTM fixed everybody's bikes for free ?

Added reply in a thread Help with 38mm carb on RM125 5/29/2020 10:08 PM

Try some dish soap. Went from a stock 34mm to a 38mm on vintage Yamaha MX360. Stock intake.

Added reply in a thread 1979 Yamaha YZ400 CDI 5/28/2020 3:13 PM

Don't think the bar is wired into the circuitry ,if I recall. The YZ80 system I used had one as well. Maybe it is more of a support system for the rotor / flywheel, in order to keep things in phase. Like a chain guide. Edit: Never had much luck on mixing ... more »

Added reply in a thread Elsinore CR250M GP cylinder 5/21/2020 5:12 PM

The 250 would have been great if they only would have made that cylinder standard, instead of optional.

Added reply in a thread Varner Motorsports issues 5/21/2020 9:43 AM

Added reply in a thread 1979 Yamaha YZ400 CDI 5/10/2020 6:17 AM

Tampa Bay area. Threw the stock 79 internal system on an old 88 YZ250 I came across with no fire. Went right on. Used to spend quite a bit of time at a local salvage yard with a few pullers. Learned that many Japanese bikes share the same 3-4 tapers ... more »

Added reply in a thread 1979 Yamaha YZ400 CDI 5/9/2020 7:06 PM

With the YZ80 system on my old 250F engine, it seemed like it would twist a few more R's than the 250 internal rotor. I was trying to get some flywheel weight on it for short track. Moose added 14 ounces to a new stock flywheel. It would twist.

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Added reply in a thread 1979 Yamaha YZ400 CDI 5/9/2020 7:50 AM

250 is internal rotor. 400 external flywheel. Do the wire lead plugs match ? Plug it in and see what happens. Surely the advance curve is different between the two boxes.

Added reply in a thread 1979 Yamaha YZ400 CDI 5/8/2020 4:49 PM

Stator and flywheel ? The tapers are different . 78 started the small case 250 era, and crank ends changed as well. I fit an 87 YZ80 system on a 79 YZ250F with minor work. The 400F uses the large taper crank ends, like the 73-75 MX250-360-400 , 76-77

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Added reply in a thread PW 50/ Broken oil feed nipple? 4/29/2020 4:07 PM

Pop that little plug out so you can adjust the air screw. Your repair looks good to me. I mean ,they are a dang moped engine. And I have used those China carbs on PW's. They work / run OK.

Added reply in a thread 2003 Yamaha ttr125l smoking bad!! 4/29/2020 4:02 PM

Just tighten the piston nuts.

Added reply in a thread Pw50 qt50 setup 4/22/2020 12:43 AM

I believe you need to use the QT pinion gear as well. The tooth count is different on both ,if I remember. Found an old QT and robbed the diff a while back. Basically just swapped the axles. Need a press. I let that whole assembly go cheap. Seems like ... more »

Added reply in a thread Update - 2019 kx450 top end 4/19/2020 8:12 PM

Never hear much about checking out the heads much when suggestions are given. Valve seats concentric ? Valves measure out ? Springs not sacked? Stem seals and keepers good ? The power in a four stroke is made in the head. Just seems like it would come ... more »

Added reply in a thread No compression on 2017 yz250f 4/19/2020 2:57 PM

Check the cam chain guides. Maybe jumped timed and bent a valve.

Added reply in a thread Varner Motorsports issues 4/19/2020 2:48 PM

We all get a little squirrely sometimes. Not just on the track. Did I win ?

Added reply in a thread Sand in the skatepark? 4/19/2020 11:41 AM

Should have used BB's.

Added reply in a thread Case repair or replacement 94 cr 250 4/19/2020 9:04 AM

Had that happen on a KX125 after it pitched the chain and wound itself around the counter shaft about a million times. Look the rest of it over good. Had mine welded. And then sold it.

Added reply in a thread Tiger King on Netflix 4/18/2020 7:29 AM

Not interested in watching. That Big Cat rescue place is about five miles away from my place. Complete shit show , that place.

Added reply in a thread What’s The OLDEST Motorcycle You Currently Own ? Tell Us About It..... 4/18/2020 7:23 AM

Got this new in 1969. Second bike ever. Still have it.

Added reply in a thread More crazy "What ifs" 4/16/2020 3:52 PM

Everyone comes out on a Rick Melon replica, racing in Walmart parking lots, as no tracks or factories exist any longer.