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  1. Thread: no spark issue

    by amc49
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    14

    Weak power to coil. New coil may be no good as...

    Weak power to coil. New coil may be no good as well. Not impossible. Flip them and see if problem moves. No enough dwell (too wide a gap) on one point set will kill spark too. Dirty point set. One...
  2. Thread: Loose tank

    by amc49
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    That seems normal to me, my '77 550 does it and...

    That seems normal to me, my '77 550 does it and been riding it forever like that. A little loose is good.
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    Electronic ignition spark units, normal. The...

    Electronic ignition spark units, normal. The early ones melted all the time. The potting compound was too soft, nothing is wrong with it otherwise. The u shape is simply two of them bolted together.
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    That is NOT a flatness test, almost every engine...

    That is NOT a flatness test, almost every engine on earth will do that. If they were that flat you wouldn't need a gasket at all ever.
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    DON'T surface the head and top of block; you have...

    DON'T surface the head and top of block; you have too little room for that and the valves may hit pistons as well as the cam chain will run looser. Honda made no real allowance for that. I've never...
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    Sticky: If you have called them .jpeg then rename them to...

    If you have called them .jpeg then rename them to .jpg.

    You can have pics too big and not by filesize per se, but by resolution, if over 640X480 then you are often there, cam files are often...
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    Your call there. The rotor tracks will carbon up...

    Your call there. The rotor tracks will carbon up even if the compartment is oil tight. Look at practically any alternator on earth. The brushes themselves are made of carbon.
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    Sticky: They are likely too large in size. The internet...

    They are likely too large in size. The internet typically rejects those that are too big as they take way too long to load, people get bored and go to another page.
  9. Thread: '79 LTD Master

    by amc49
    Replies
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    65

    The o-ring gets hard and will not flex enough to...

    The o-ring gets hard and will not flex enough to come out easy. Nothing to do but try to break it.

    Get the master piston out first, that will tell the tale. Get it out and refinish (hone) the M/C...
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    No, cases must split to get it out. ...

    No, cases must split to get it out.

    http://www.cb750.com/threads/6454-79-CB750k-no-6th-gear

    Go down to post #8 and download the imgur pic there and blow it up, or save it to your drive and blow...
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    Yep................. ...

    Yep.................

    http://www.cb750c.com/modules.php?name=Your_Account&redirect=viewtopic&t=301

    Look here, go there and enroll for free and look through the technical documents section. You...
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    Outer diameter of the upper fork tube itself....

    Outer diameter of the upper fork tube itself. Fork springs can be helped at first by simply replacing the sagged amount with an equivalent length spacer to use them longer.
  13. You can do that if you want, the main thing is...

    You can do that if you want, the main thing is that hose must be left open or the carbs don't vent to flow right.
  14. The other hose coming off carbs besides the fuel...

    The other hose coming off carbs besides the fuel supply hose is the overflow or vent line, it MUST be open when bike is running or carbs don't vent and then they don't feed fuel. It comes off the...
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    900F fork spring length new is 532 mm., the...

    900F fork spring length new is 532 mm., the service limit is 521mm. Springs don't really wear at all, they sag and collapse to get shorter. The numbers are from the Honda 900F service manual and for...
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    No, it will be easier to fix the one you have....

    No, it will be easier to fix the one you have. All you are doing there is adding an engine that needs to be fitted to the frame along with the normal engine work. Highly unlikely now to find a new...
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    That engine IS watercooled. HHMMMM. Went...

    That engine IS watercooled. HHMMMM.

    Went looking and found little other than likely Lifan engine like said and probably a 250. The closest I got was 253FMM which is an aircooled version with...
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    X2 on that reason. Normal can rattle just when...

    X2 on that reason. Normal can rattle just when you are about to kill the engine, say when you let clutch out a wee bit fast to try to die, you hear it rattle almost like a hard pinging or knocking....
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    The long one is one of the ones to the tach drive...

    The long one is one of the ones to the tach drive cap with the gear on it. It gets one long and one short one. Don't ask me why Honda does that but it does.

    FYI, lower your torque on those bolts...
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    If you are after more top speed you decrease the...

    If you are after more top speed you decrease the rear not increase.
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    Always if possible match to BIGGER samples, the...

    Always if possible match to BIGGER samples, the smaller they get the more error you will have matching. I used to sell touchup paint too and can tell you that say in the metallic reds you can have 5...
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    Yes to that. Grounding goes through no 'solenoid'...

    Yes to that. Grounding goes through no 'solenoid' on old bikes like that. Straight run from the grounding object to the frame. Which wire from the reg? Use NO wire unless it is green ONLY or you may...
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    I don't think it's a Honda. Whatever it is, it's...

    I don't think it's a Honda. Whatever it is, it's small and 250-450 cc. The left side resembles Kawasaki 250 twin just before water cooling.

    Look down low on the cylinder block for the cast in...
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    If you have some excess paint amount you might...

    If you have some excess paint amount you might try mixing the faintest amount of black in the lighter color to see if it approaches the darker color. Not all two tones do that but many do.

    If you...
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    Yes. Had a '70 Mark Donahue Special 390 Javelin...

    Yes. Had a '70 Mark Donahue Special 390 Javelin too as well as a 360 Hornet. My best friend raced a 304 gremlin as well.

    The race AMX ran in the high nines in the mid '70s. One of the slightly...
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