Recent content by Tyler Shiells

Great. I hope that link to the +1mm rings works for you then.

The seller also has the 1.25 oversize kit if you need it. https://www.ebay.ca/itm/Yamaha-XS400-XS-400-OHC-2A2-Kolben-Kit-Ubermas-1-25-mm-Kolbenringe-Piston/252122273419?hash=item3ab3a8968b:g:OHsAAOSwr1taAsQK

https://www.ebay.ca/itm/Yamaha-XS400-XS-400-OHC-2A2-Kolbenringe-Piston-rings-4-Ubermas-1-00-mm/252122272834?hash=item3ab3a89442:g:1U8AAOSwK~RZ5a-e This is the seller I got my .25 rings from. The seller also has pistons. They're in Germany. It's your best option. Did you double check those...

Take a picture of the pistons for us. Do they have +1mm stamped on them? Measure the ring gap and see if the rings are still in spec. The procedure is in the manual.

What tool are you measuring with? And at varying depths that was the average? I would double, triple, quadruple check those measurements. If those are accurate your jugs are 4 sizes over already. if you have standard pistons I dont think you'd have anywhere near those psi numbers with the jugs...

Not sure about the fuel issue. Compression wise though...Are the valves set proper? You can make a simple leak down tester and see where its loosing pressure. If it's coming through the crankcase then you have to take the jugs off and get an accurate measurement at varying depths of the...

Ignition housing is junked. A previous owner, at one point decided to use a large metal screw to hold it together. Stripped and expanded the threads. Its toast. So I rigged up a rocker switch I had lying around. It fit right into one of the holes on the headlamp brackets I'm using. I'll have...

Thanks for the reference Chris

These look to be, from what I can tell, fairly close to OEM looking mufflers?

Rebuilt carbs this afternoon. Then warmed the bike up with a few laps around the property then about 5km down the road and back. Then finally synced the carbs Main jet 137.5, Pilot 45, needle 3rd position and 3 1/2 turns on the pilot mix screw and seems to be running good. Exhaust leak at...

New steel lines installed. Went with Venhill Fork dust covers installed. Also put the Yamaha front logo back. New plugs and wires

For my 78 xs400

Hey Chris would you happen to have the choke plunger dust covers and at least one choke shaft lever?

Manged to make some custom grips today. I started of by removing the pocket from the leather jacket. Also used the divider foam that comes in tool sets. Cut them to size and glued them together. I then used the old handle bars in a vice so I could sit down, listen to some music and...

If you end up having poor compression and need a rebore, over size rings and pistons, expect to pay in excess of $500 just for that job alone. That's if your doing all the work and paying someone to machine the cylinder jugs. Over sizes pistons are fairly rare. NOS is out there but not...