PSI?
Close

PSI?

This is a discussion on PSI? within the Technical forums, part of the Caferacer.net Forums category; Hey guys, just getting into the market of CB's and need your help. Going to be looking at one this weekend and when I look ...

Results 1 to 5 of 5

Thread: PSI?

  1. #1
    Junior Member PaulZ01's Avatar
    Join Date
    Nov 2009
    Location
    Brooklyn, NJ, USA.
    Posts
    28

    PSI?

    Hey guys, just getting into the market of CB's and need your help. Going to be looking at one this weekend and when I look at new bikes, I always check the psi in each cylinder. What range should I be looking for on a 1980 CB750?

  2. #2
    Senior Member roccitycafe's Avatar
    Join Date
    Sep 2008
    Location
    Rochester, New York, USA.
    Posts
    1,412
    anything over 140 would usually be excellent
    probably just the consistency between cylinders will tell you a lot

  3. #3
    Moderator joe c's Avatar
    Join Date
    Mar 2002
    Location
    , , Turkey.
    Posts
    13,809
    yeah, optimally, you dont want no more than about 10% difference between cyls. and above 140 for sure.



    not a pretty boy honda rider... i\'m fag on a TTR

  4. Remove Advertisements
    CafeRacer.net
    Advertisements
     

  5. #4
    Junior Member PaulZ01's Avatar
    Join Date
    Nov 2009
    Location
    Brooklyn, NJ, USA.
    Posts
    28
    Thanks guys...ill let ya know how it goes

  6. #5
    Senior Member Geeto67's Avatar
    Join Date
    Oct 2005
    Location
    Columbus, Ohio
    Posts
    23,274
    check it warm not cold. cb750s have a tendency to pump down if they have been sitting for a while. It doesn't mean anything but usually they come right back up when you fire them up. Case in point I started a cb750F engine that had been sitting for about 10 years. Cold before fire up it read in the 90 psi range across the board. Fired it up and she had about 160 psi in all holes and no smoke or burning oil. cold the next morning the psi was significantly higher (don't remember the number).
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.
    - Samuel Beckett
    A tool is just an opportunity with a handle
    - Kevin Kelly

Sponsored Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •