Recent Posts

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Engine & Transmission / Re: Just wont run, white smoke from exhaust?
« Last post by guylr on September 25, 2018, 06:00:15 PM »
Don't worry if the new rings end gaps are at the top of spec. Yamahas tend to come that way.

Guy
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Engine & Transmission / Re: Just wont run, white smoke from exhaust?
« Last post by dailydose1 on September 25, 2018, 05:51:07 PM »
I haven't touched the seats yet but am hoping to get to that tonight and will throw up some pics afterwords. I had 96 pistons in mine and ended up getting the 97 pistons and new rings for this to hopefully take down that gap a little bit.

Engine has 6700 miles on it and the tech followed the exact procedure in the manual as I brought it with me and gave it to him :p

The valves has a ton of burnt on carbon but otherwise I don't see any pitting or burning. Will hopefully have more pictures up tonight and thank you for all your help.

*ill also get end gap on the rings tonight*
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Engine & Transmission / Re: Just wont run, white smoke from exhaust?
« Last post by guylr on September 25, 2018, 02:48:32 PM »
If both pistons have that skirt clearance then you are OK to reuse the pistons if they aren't scuffed badly. Did the tech measure the piston skirt 10mm from the bottom? What's the end gap on the original rings? How many miles on this engine?

The exhaust seats don't look so good in the photo. If they don't clean up with a light lapping you should have them recut. How about the valves themselves? Any pitting or burning?

Guy
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Frame & Suspension / Re: Wheel options - spokes with disc brakes
« Last post by guylr on September 25, 2018, 02:39:52 PM »
If it's  the 1L9 part yes it will. The 82 400s in the States were all drum brake. Your models may have been different.

Guy
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Frame & Suspension / Re: Wheel options - spokes with disc brakes
« Last post by Joffa1 on September 25, 2018, 07:56:39 AM »
Would an 1982 xs400 rear disc fit and be lighter than standard xs500c disc?

Found one on eBay.
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Frame & Suspension / Re: Wheel options - spokes with disc brakes
« Last post by Joffa1 on September 25, 2018, 07:48:06 AM »
Fantastic. Thanks again.
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Engine & Transmission / Re: Just wont run, white smoke from exhaust?
« Last post by dailydose1 on September 24, 2018, 11:23:42 PM »
Some pictures for your viewing pleasure, but please see questions above :)
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Engine & Transmission / Re: Just wont run, white smoke from exhaust?
« Last post by dailydose1 on September 24, 2018, 07:35:52 PM »
So I got it measured, 0.054mm piston to bore clearance....looks to be right on the edge. So my options are this:

-wait for who knows when to find oversized pistons
-get tx500 pistons and rebore (but it wouldn't be the higher compression pistons)
-get new rings and reuse the old pistons

Any thoughts on what would be best?

*Also, does anyone know if the 1978 xs500e advancer is the same as the 73 tx500?*

thank you!
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Fuel System / TM 32 or TM 34 ?
« Last post by cmjp74 on September 24, 2018, 05:44:08 PM »
I can't get the BS38s to work as I want them and finding jets are a pain so I'm going to swap to TMs. My question is which size for regular street riding ?
Also, if anyone's using them already, what jetting?

Cheers
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