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Search results

  1. P

    Valve Stem Seals, or maybe throw in the towel

    Rich, check the valve seat width. Too wide a seat width and those carbon deposits to get stuck into the seat and keep the valve from sealing properly. Too narrow a seat width will prevent valve head from transferring heat into the block. Seat width should be about 0.040” And a worn valve seat...
  2. P

    Valve Stem Seals, or maybe throw in the towel

    As you probably know that in a wasted spark ignition system both cylinders fire at the same time. One spark plug fires the cylinder under compression and the companion cylinder's spark is "wasted" as that cylinder is on the exhaust stroke.. But the high voltage spark always travels in the same...
  3. P

    Valve Stem Seals, or maybe throw in the towel

    A couple of squirts of oil in that cylinder will help decide if it is a piston ring seal or a valve issue... Could it also be a head gasket issue?
  4. P

    Valve Stem Seals, or maybe throw in the towel

    Rich, IIRC, the inner cylinder’s caps are different from the outer cylinder’s caps on the 16-valver. Can someone confirm?
  5. P

    12 volt DC Igniter box

    I suspect you meant signal generator, 2 wires, not stator, 2 wires. I’d first check the pins in the connector. Does your meter confirm that the B/W wire has a ground back to the battery? Do you have 12V On the O/W wire at each coil? I don’t know how to prove out the ignitor box or the signal...
  6. P

    Valve Stem Seals, or maybe throw in the towel

    Just for clarification, at the 200k setting, all your measurements should have a “k” on the end of them. So your resistance measurement for the 1 & 4 wires and coil would be 11.6k ohms, or 11,600 ohms. Using my handy dandy little calculator your 11.6k ohms plus the resistance of the 1 & 4 caps...
  7. P

    Valve Stem Seals, or maybe throw in the towel

    And here is more than you asked for, but the magic of electricity is: V=IR. Or volts equals current(In amps) time resistance (ohms). To solve for current divide each side of the equation by R and you get: V/R = I So when you were hustling up that big hill with the HDs trying to keep up...
  8. P

    Valve Stem Seals, or maybe throw in the towel

    To measure the resistance on the secondary side of your coil, put a probe in each sparkplug cap. That will read the total resistance of the coil’s secondary circuit, including the spark plug wires and caps. Since your meter is not auto ranging, you need to select the scale that would show, maybe...
  9. P

    Valve Stem Seals, or maybe throw in the towel

    Let’s measure the resistance (ohms) of the primary circuit of the ignition coils. To properly measure the resistance of a circuit the circuit must be off, as in no current flowing through it. Unplug the O/W (power) wire from the coil and the white (ground) wire from the coil. Set your meter to...
  10. P

    Valve Stem Seals, or maybe throw in the towel

    Ditto on the compression/leakdown test. Listening at the dipstick hole would also give you some indication if no. 4 has a ring issue, or, more of a ring issue than the other cylinders. When I first looked at the plug pictures, I thought no. 1 plug also looked marginal. Interestingly, both 1 and...
  11. P

    SH775 install frustrations

    Thank You for the kind words, Rich.
  12. P

    SH775 install frustrations

    My bad again Dave. I should have said all three legs read 72.x VAC, not ohms
  13. P

    SH775 install frustrations

    Last time I tested the stator output all three legs read 72.x ohms. Not quite up to spec but, with these changes, should be enough to keep the battery up. P.S. Monday, 7:30AM, I go in the hospital for a “chemically induced” nuclear stress test (what ever that is)! Worrying about my Zuki keeps...
  14. P

    SH775 install frustrations

    Thanks for confirming that Ed. I wasn’t sure the original stator wires were up to the task. Since they are adequate, hopefully, I will end up with no splices and the only crimp & solder joint (belt and suspenders :-) will be at the Triumph connector.
  15. P

    SH775 install frustrations

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  16. P

    SH775 install frustrations

    Okay guys, now for my next hurdle: The wiring from the stator to my new SH775! I suppose I could use the original 3 wires (Yellow, Blue/white, Green/white), ( by passing the headlight switch), and going directly to the SH775 but those wires look awful wimpy, and their connectors showed excess...
  17. P

    SH775 install frustrations

    Oh, okay, I see now that you do have the Triumph connectors. My Triumph connector is gray for the rectifier side and black for the regulator side. One more question and then I will stop bugging you (for a while :-). What size wires should I run from the stator up to the rectifier?
  18. P

    SH775 install frustrations

    Rich, thanks for sharing. What a difference between 1980 and 1982. My tool kit on the 1980 GS750ET is back by the tail light. There isn’t much depth to my electrical compartment. Is your fuse block for glass or blade fuses? Arn’t you now using Triumph connectors on the R/R ?
  19. P

    SH775 install frustrations

    Thanks for your comments Rich. I will (slowly) try and get this project moving (again). My son will be visiting us this weekend and I’ll see if I can send that metal plate home with him. He has a drill press to drill the new holes and a welder to tack weld some nuts to the back side of the...
  20. P

    4month nap wake up-Spark only on 2&3!

    Wouldn’t a bad ignitor ground effect both coils?
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