kopcicle
antidisestablishmentarian
Re: 1976 Yamaha XS500C cafe/ restomod
Oh man I hope I can save some pain when it comes to the XS 500 8 valve ...
.... So running out of replacement heads from Yamaha we were instructed to remove the head and peen the combustion chamber and place a small drill start at the end of the crack on the outside then install the spark plug with an aluminum flat washer and red aviation Hi-tack at some small torque value .
I went looking for the procedure in Yamaha documentation and found none but to this day I find Yamaha service techs from that era that remember something like those instructions .
By the way the crack almost always radiates from the spark plug hole to the exhaust valve seat . If I were to find even a clean enough late model head I'd warm it up and shot peen it to relieve stresses just in case .
There are a few things I'll have to refresh my memory about when it comes to R&R the flywheel and adjust/time the balance chain . It was install a few degrees ahead/behind the keyway and twist into place . I'm sure you get the idea . Basically it sux the first time .
The stock carbs are their own deal . Unlike much of anything you'll see in classic rice .
On most you can dual disc the front but the order of installation is specific and escapes me as it was too many years ago but not long enough to forget how many times I had to back up and start over .
For you and others that resurrect the cast iron single pot caliper the O-ring from one of the 240Z Datsun calipers ( can't be specific here I'm gonna claim senility) is a direct fit . I have no idea what to do about the piston other than have someone carve one from SS .
CHAIN (DK219H-82L)
14410-235-003 (replaces 14410-216-003)
JOINT, CAM CHAIN
14411-216-000
http://hondapeninsula.com/fiche_section_detail.asp?section=120034&category=MOTORCYCLES&make=HONDA&year=1965&fveh=2876
chain just happens to come from a CB160 (cam chain)
Now the balance chain is a Kawasaki part
Kawasaki 92057-1415 (CHAIN,CAM,BF05-104L)or at last check Tsubaki still makes the BF05 in bulk , you just have to find someone that carries it .
Seems a shame to cut 62 links out of 104 and use the rest for a bracelet ...
The later tensioner for the balancer has a thicker slipper for the starter chain and is a better adjuster for the balance chain . Take a good look while the flywheel is off . I have a fair copy of the parts fiche if needed .
If you find a better way of installing the flywheel/starter clutch/chain gears without dropping the key into the ... than I have please share .
Is that enough blathering for now ?
~kop
Oh man I hope I can save some pain when it comes to the XS 500 8 valve ...
.... So running out of replacement heads from Yamaha we were instructed to remove the head and peen the combustion chamber and place a small drill start at the end of the crack on the outside then install the spark plug with an aluminum flat washer and red aviation Hi-tack at some small torque value .
I went looking for the procedure in Yamaha documentation and found none but to this day I find Yamaha service techs from that era that remember something like those instructions .
By the way the crack almost always radiates from the spark plug hole to the exhaust valve seat . If I were to find even a clean enough late model head I'd warm it up and shot peen it to relieve stresses just in case .
There are a few things I'll have to refresh my memory about when it comes to R&R the flywheel and adjust/time the balance chain . It was install a few degrees ahead/behind the keyway and twist into place . I'm sure you get the idea . Basically it sux the first time .
The stock carbs are their own deal . Unlike much of anything you'll see in classic rice .
On most you can dual disc the front but the order of installation is specific and escapes me as it was too many years ago but not long enough to forget how many times I had to back up and start over .
For you and others that resurrect the cast iron single pot caliper the O-ring from one of the 240Z Datsun calipers ( can't be specific here I'm gonna claim senility) is a direct fit . I have no idea what to do about the piston other than have someone carve one from SS .
CHAIN (DK219H-82L)
14410-235-003 (replaces 14410-216-003)
JOINT, CAM CHAIN
14411-216-000
http://hondapeninsula.com/fiche_section_detail.asp?section=120034&category=MOTORCYCLES&make=HONDA&year=1965&fveh=2876
chain just happens to come from a CB160 (cam chain)
Now the balance chain is a Kawasaki part
Kawasaki 92057-1415 (CHAIN,CAM,BF05-104L)or at last check Tsubaki still makes the BF05 in bulk , you just have to find someone that carries it .
Seems a shame to cut 62 links out of 104 and use the rest for a bracelet ...
The later tensioner for the balancer has a thicker slipper for the starter chain and is a better adjuster for the balance chain . Take a good look while the flywheel is off . I have a fair copy of the parts fiche if needed .
If you find a better way of installing the flywheel/starter clutch/chain gears without dropping the key into the ... than I have please share .
Is that enough blathering for now ?
~kop