Search:

Type: Posts; User: amc49

Page 1 of 20 1 2 3 4

Search: Search took 0.06 seconds.

  1. Replies
    11
    Views
    117

    That means nothing if it leaks of course. FYI,...

    That means nothing if it leaks of course. FYI, new they get no gasket sealer on the gasket, dry only. One of the last engines I took apart had no seals there at all, they simply put a small circle of...
  2. Replies
    11
    Views
    117

    http://www.cb750c.com/publicdocs/CB750_Manual/1979...

    http://www.cb750c.com/publicdocs/CB750_Manual/1979750studbulletin.pdf

    Applies to all early DOHC, the early engines were the worst ones.
  3. Replies
    11
    Views
    117

    Use gasket dry. The copper coat lets the gasket...

    Use gasket dry. The copper coat lets the gasket slip under load and it moves as it squishes around. You need new o-rings at the bottom of the studs too, there is an oil leak issue at the back of the...
  4. Replies
    2
    Views
    45

    Cobble up a fitting to fit the passage and to a...

    Cobble up a fitting to fit the passage and to a handheld grease gun, That will move it at several thousand psi. How I remove the bad ones.
  5. Replies
    7
    Views
    102

    No, you generally do not have the options you do...

    No, you generally do not have the options you do on the front. The backs are always proprietary to the nth degree. Not saying something else won't work but I for one don't know of it. The DOHC has...
  6. Replies
    11
    Views
    117

    You change the gasket with pistons still in...

    You change the gasket with pistons still in place.

    ANYTIME you remove the cylinder block with the intentions of keeping the same rings in place to use over you are asking for it. I've done it...
  7. Replies
    7
    Views
    102

    You can rebuild until the end of the earth yet if...

    You can rebuild until the end of the earth yet if the master bore is not perfect then fluid will simply bypass the piston in a leak all day long. The fluid leaks out through lows which a honing job...
  8. Replies
    11
    Views
    117

    Not trying to be mean there but the idea simply...

    Not trying to be mean there but the idea simply will not work. Once you have an area soaked with oil no gasket sealer on earth will stop it leaking.
  9. Replies
    11
    Views
    117

    ??????? On 2/1/20 you posted this..... 'I...

    ???????

    On 2/1/20 you posted this.....

    'I have totally rebuilt my 1981 CB750C.'

    You were talking about the engine when you posted it.

    Removing head does nothing to rings at all unless the...
  10. Thread: Hello

    by amc49
    Replies
    1
    Views
    101

    A compression check and run the valves, how most...

    A compression check and run the valves, how most of them begin to run bad. If you already haven't. Don't expect correct running not doing it, they usually don't.
  11. The washer spreads out the load a bit better than...

    The washer spreads out the load a bit better than bolt head alone. FYI, a flange bolt is a hex head bolt with the washer molded with it to be round instead of 6 sided.

    Yes, that would likely...
  12. Replies
    2
    Views
    172

    Good luck there, any one in good shape is worth...

    Good luck there, any one in good shape is worth big $$$$$$$$$$.
  13. Likely NLA. 8 mm. bolt maybe 1.25 thread and 2...

    Likely NLA.

    8 mm. bolt maybe 1.25 thread and 2 inches long, add a washer under it to make the length closer to the 48 of the spec. At least 10.8 property class bolt. Ace Hardware will have them.
  14. Replies
    1
    Views
    191

    http://www.cb750.com/faq.php?faq=vb3_reading_posti...

    http://www.cb750.com/faq.php?faq=vb3_reading_posting#faq_vb3_attachments
  15. Replies
    1
    Views
    165

    That last lower link likely goes much more...

    That last lower link likely goes much more up/down than sideways, it will support better that way. The way you are trying to do it loses leverage and the link is not long enough anyway.

    Do NOT...
  16. Replies
    4
    Views
    157

    Not making that up (did it on 4 myself), the...

    Not making that up (did it on 4 myself), the bikes run great other than the last bit of pullout is not there in high gear ONLY, who needs the 125 mph there, 110 is fine. Others with a solid motor...
  17. Rubber over the spring is not that big a deal for...

    Rubber over the spring is not that big a deal for a while, eventually the spring can break though, the rubber is a vibration camper to keep spring from rattling to break. More important is flexing...
  18. Replies
    4
    Views
    157

    You are in pod hell and what they do. Why we tell...

    You are in pod hell and what they do. Why we tell you not to do them.
  19. Replies
    4
    Views
    318

    'Pulls great all the way to 60 mph and then kinda...

    'Pulls great all the way to 60 mph and then kinda Boggs a bit. Any ideas?'

    Get rid of that 135 jet, you are showing how it is too rich with what I just quoted you on. And great compression isn't...
  20. You use clean shop towels or other to block the...

    You use clean shop towels or other to block the openings at top, you do NOT look for a chance to flush as there are so many trapping points you can easily blow up the new motor doing it. The DOHC has...
  21. Yes, it MUST be left open, it vents all 4 carbs.

    Yes, it MUST be left open, it vents all 4 carbs.
  22. Replies
    4
    Views
    95

    They are normal transistorized ignition, the...

    They are normal transistorized ignition, the spark unit simply replaces the points. They are NOT CDI type as some manuals claim. More like the type used on so many cars.
  23. Thread: no spark issue

    by amc49
    Replies
    4
    Views
    230

    'I get flash behind not spark in air gap.' ...

    'I get flash behind not spark in air gap.'

    Explain that more clearly, Assuming you are aware that one plug in each pair fires backwards. Or outer wire electrode to the center rather than the usual...
  24. Thread: no spark issue

    by amc49
    Replies
    4
    Views
    230

    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...
  25. Thread: Loose tank

    by amc49
    Replies
    1
    Views
    148

    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.
Results 1 to 25 of 500
Page 1 of 20 1 2 3 4