1972 XS650 Heavy Metal Sled

teazer

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Just hand blend with a dremmel and carbide bit (or sanding drum) from the seat to as far out as you need to go and make it somewhat wider side to side to allow gas to flow easier.

Take your time and try not to accidentally dig into the actual seat.

If you manage to damage the seat, re-cut it to suit a slightly larger valve and win both ways
 

Hurco550

Keep er' Between the Ditches
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Ya dun jinxed it bub. Your gonna miss a freakin piston or something.
 

SONICJK

Reminds me of...me No, I'm sure of it. I hate him
irk miller said:
Pause.

e5231cc0410cad31471ce34942a190e4.jpg


I’ve decided to take this motor and put it back together for an assessment. I assume this was the parts motor, or he bought parts for this motor. I’m not sure. Regardless, before I go and dig in with Legos that may or may not have all the pieces, I prefer to find some known quantifiers.


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Nice sparkling water.
 

SONICJK

Reminds me of...me No, I'm sure of it. I hate him
I love a good xs650. I miss mine. I'd go back and buy back my 400f and my xs650 and be a happy camper.

Looks like this one should be saweet.
 

irk miller

You've been mostly-dead all day.
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SONIC. said:
Nice sparkling water.
Ha! This stuff has gotten me off of sweet tea and soda, so my gut is happier and smaller.

The jury is out on my relationship with the XS650. I have never ridden one and this is the first to work on, but people like you and Brad really talk them up. Brad likes to refer to this motor as the SBC of Japanese motorcycles.
 

cxman

Over 1,000 Posts
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high powered 5 speed vibrator

but if they are setup right they will do that real nice fender /front end shake at the lights

just like the brit bikes used to
 

irk miller

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Motor is mostly together, but it’s missing half the components for ignition. No cam, no advance rod, no box for the electronic ignition. I’m thinking I’ll fork out for the XS Charge or Boyer Bransden kits.




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SONICJK

Reminds me of...me No, I'm sure of it. I hate him
Hughes Hand Built has some nice stuff.
I've used his PMA kit on 2 650's. it's not cheap but very nice and does a great job.
He's got a CDI kit with the PMA as well but I haven't run it.
 

teazer

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Mike's XS can sell you the advance rod and perhaps a replacement rotor. No black box used for the Pamco system that uses stock advance retard.
 

irk miller

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This isn’t much, but it’s the mark of the beginning. As soon as I find a wheel set, we’ll get it on its own feet.

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irk miller

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I feel like this bike is in limbo until I find my spoke wheel set. Until then, I have a decent set/rear fender option...

c7c91e61bab72e5904e2aab2b644bdd1.jpg



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3DogNate

"You Meet the Nicest People on a Honda"
irk miller said:
Ha! This stuff has gotten me off of sweet tea and soda, so my gut is happier and smaller.

The jury is out on my relationship with the XS650. I have never ridden one and this is the first to work on, but people like you and Brad really talk them up. Brad likes to refer to this motor as the SBC of Japanese motorcycles.
I did a hard tail XS650... I did a EX500 carb swap on it and it was SO MUCH BETTER than the stock BS34s after doing the recommended jet/needle swap. Be sure to read up on that... those carbs are cheap and easy to work with. That thing was a real teeth rattler though. I seriously considered wearing a mouth guard when riding it. If I do another I'm gonna balance the crank... My hands and feet would go numb on it. :) very close to riding my Triumph 650 (without the oil leaks) :)
 

Rider52

Over 1,000 Posts
We have a 1974 650. My brother in law bought it new in 75 and it was his first big bike. Just after I married his sister, he convinced her to ride from the farm to town on it about 35 miles. It vibrated so bad she couldn't feel her feet or her butt when she got to town. She refused to ride back with him and has not been on it since. That was 44 years ago. We've been the caretakers since about 1997.
 

Maritime

Over 10,000 Posts
Yep that looks good. I really like that you put fenders, so many folks put the hoops and no fender and the back end looks stupid to me. like half finished most of the time.
 

CarbsAndCylinders

Careful With That Axe Eugene
Yes, I remember that these bikes vibrate like hell but they sound so nice, makes up for it, I think. Thicker grips and maybe you could also try to isolate the footpegs. I remember that at one time guys used to make rubber washers out of slices of garden hose and use these to isolate vibration but any rubber washers might help. You can also add weight to the bars to change the rpm range that the bars vibrate at. I don't know how you calculate that but to get the vibration out of highway cruising range would be good. I hope to get one of these girls in the future, they make great Cafe's and there are lots of parts for them.

Brian
 

3DogNate

"You Meet the Nicest People on a Honda"
CrabsAndCylinders said:
Yes, I remember that these bikes vibrate like hell but they sound so nice, makes up for it, I think. Thicker grips and maybe you could also try to isolate the footpegs. I remember that at one time guys used to make rubber washers out of slices of garden hose and use these to isolate vibration but any rubber washers might help. You can also add weight to the bars to change the rpm range that the bars vibrate at. I don't know how you calculate that but to get the vibration out of highway cruising range would be good. I hope to get one of these girls in the future, they make great Cafe's and there are lots of parts for them.

Brian

They certainly have their charm, it's a pretty raw motorcycle experience I guess. They make really decent power for an old 650 twin. If I do another one I'm splitting the cases and balancing the crank.
 

irk miller

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3DogNate said:
They certainly have their charm, it's a pretty raw motorcycle experience I guess. They make really decent power for an old 650 twin. If I do another one I'm splitting the cases and balancing the crank.
I have a spare crank to do just that. I'll probably run it a while, lose a few teeth, then send the spare crank and cam to Hugh's for the rephase. They're near my mom's house, so it's not a big deal to head up that way.
 

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