hookemdevils22
XS650 Member
Hey all, I just picked up a '75 XS650B from a friend, on which I'm planning to do a cafe build. It came in boxes, but 90% of it is there.
My plans for the electrical includes a PMA and ditching the battery. I'm going to run LED turn signals and tail/brake light, with 2.5" multi-function speedo and tach and a yet-undecided-sized headlight. The bike came with the full OEM harness, but I'm ditching that to build my own similar to this.
I also have a set of 35mm later-style forks and triples that I plan to install and perhaps lower a tad. The seat will be replaced (this is dead sexy), though I'd prefer to keep the tank. Likely going with tracker handlebars with a smaller rise, and I'm kicking around eliminating - or at the very least, cutting - the fenders.
I do have a couple questions:
1) My ignition appears to be a Pamco hall effect with mechanical advance (Edit: It is indeed a Pamco unit, and does appear to have the 60° rotor.), meaning I will need a dual output coil. Is this correct? And if so, is it advisable that I ditch the mechanical advance for the E-advance?
A: It is a Pamco hall effect ignition with 60° rotor, and requires a dual coil. I'll keep it as-is for now.
2) Right under the frame, at the back of the engine above the carbs, are two 12mm ID hoses that are capped. Anybody know what they're for?
A: Crankcase breathers.
3) My fuel petcocks don't have a provision for vacuum. Can I plug the two nipples at the base of the carbs (one can be seen in the pic above, just below the valve cover), or are they for something else?
A: Yes, plug them.
4) This one is going to sound incredibly stupid: where do the speedo and tacho cables connect to the powerplant? It looks like one connects at the front of the right side engine cover, but I can't for the life of me find another.
A: Tach to the front right side engine cover, speedo to the front wheel.
I apologize for the rudimentary questions; I haven't received the workshop manual in the mail yet.
My plans for the electrical includes a PMA and ditching the battery. I'm going to run LED turn signals and tail/brake light, with 2.5" multi-function speedo and tach and a yet-undecided-sized headlight. The bike came with the full OEM harness, but I'm ditching that to build my own similar to this.
I also have a set of 35mm later-style forks and triples that I plan to install and perhaps lower a tad. The seat will be replaced (this is dead sexy), though I'd prefer to keep the tank. Likely going with tracker handlebars with a smaller rise, and I'm kicking around eliminating - or at the very least, cutting - the fenders.
I do have a couple questions:
1) My ignition appears to be a Pamco hall effect with mechanical advance (Edit: It is indeed a Pamco unit, and does appear to have the 60° rotor.), meaning I will need a dual output coil. Is this correct? And if so, is it advisable that I ditch the mechanical advance for the E-advance?
A: It is a Pamco hall effect ignition with 60° rotor, and requires a dual coil. I'll keep it as-is for now.
2) Right under the frame, at the back of the engine above the carbs, are two 12mm ID hoses that are capped. Anybody know what they're for?
A: Crankcase breathers.
3) My fuel petcocks don't have a provision for vacuum. Can I plug the two nipples at the base of the carbs (one can be seen in the pic above, just below the valve cover), or are they for something else?
A: Yes, plug them.
4) This one is going to sound incredibly stupid: where do the speedo and tacho cables connect to the powerplant? It looks like one connects at the front of the right side engine cover, but I can't for the life of me find another.
A: Tach to the front right side engine cover, speedo to the front wheel.
I apologize for the rudimentary questions; I haven't received the workshop manual in the mail yet.
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