CL350 engine top-end deconstruct, reconstruct - Page 2
Page 2 of 8 FirstFirst 1 2 3 4 ... LastLast
Results 11 to 20 of 71
Like Tree36Likes

Thread: CL350 engine top-end deconstruct, reconstruct

  1. #11
    Senior Member 83XLX's Avatar
    Join Date
    Sep 2014
    Location
    Heart of Dixie
    Posts
    2,700
    I'd research the available piston overbore sizes and let the machine shop tell me what overbore it needs before ordering new pistons and rings.
    1969 Honda CL350
    1983 H-D XLX-61 Sportster

  2. #12
    Senior Member f100owner's Avatar
    Join Date
    Apr 2019
    Location
    Central Texas
    Posts
    170
    The bigger challenge in my neck of the woods is a machine shop willing to do this. I talked to the proprietor of the shop that rebuilt the top end on my old harley. His minimum size is 2.5 inches in diameter, which might cover me. The manual indicates the bore starts at 2.501 inches. He really only works on Harley's but was OK just doing the cylinders at $55 per. I would just need to provide the pistons, rings and the clearance called for between cylinder and piston. Any feedback would be appreciated.
    also when the parts manual refers to .25/.50/.75/1.00 what units are they referring to "over" standard - ie .25mm/.50mm/.75/1mm?
    Last edited by f100owner; 05-15-2019 at 12:20 PM.
    CL350K0
    2016 Harley Ultra Limited
    1971 Ford F100 Flareside (project)
    2016 Ford Expedition
    2018 Ford F150

  3. #13
    Senior Member TOOLS1's Avatar
    Join Date
    Dec 2010
    Location
    Kansas City, MO
    Posts
    1,921
    $55.00 is not bad for boring a cylinder. I charge $45.00 to bore up to 1mm over. After that, it is $55.00. The 0.25, 0.50, 0.75... does refer to the oversize.
    TOOLS

  4. Remove Advertisements
    HondaTwins.net
    Advertisements
     

  5. #14
    Senior Member f100owner's Avatar
    Join Date
    Apr 2019
    Location
    Central Texas
    Posts
    170
    Can one make an educated guess as to how far over I should go with my next set of pistons based on the images provided. A coworker, who messes around with all sorts of the older bikes suggested I would be pretty safe going .50mm over based on the same images I provided. He was of the opinion going with new reproductions was a better option than NOS suggesting the improvements in metallurgy would be a benefit from OEM NOS made some 40-50 years ago.
    CL350K0
    2016 Harley Ultra Limited
    1971 Ford F100 Flareside (project)
    2016 Ford Expedition
    2018 Ford F150

  6. #15
    Senior Member TOOLS1's Avatar
    Join Date
    Dec 2010
    Location
    Kansas City, MO
    Posts
    1,921
    Quote Originally Posted by f100owner View Post
    Can one make an educated guess as to how far over I should go with my next set of pistons based on the images provided. A coworker, who messes around with all sorts of the older bikes suggested I would be pretty safe going .50mm over based on the same images I provided. He was of the opinion going with new reproductions was a better option than NOS suggesting the improvements in metallurgy would be a benefit from OEM NOS made some 40-50 years ago.
    I thought I did that all ready. But I doubt 0.50 mm is going to clean that up. If those pits are more then 0.010" deep it won't. You might get by with 0.75mm over. But I would just go 1.00 mm over rather than buy pistons and then have to buy another set because the cylinders did not clean up.
    TOOLS

  7. #16
    Senior Member chaindrivecharlie's Avatar
    Join Date
    Nov 2013
    Location
    Sheboygan, Wisconsin
    Posts
    373
    Tools, how far can you actually overbore one of these engines?
    Charlie

    1972 CL 175 K6
    1972 CL 350 K4
    1981 CM 400 C

    Joshua 24:15

  8. #17
    Senior Member TOOLS1's Avatar
    Join Date
    Dec 2010
    Location
    Kansas City, MO
    Posts
    1,921
    How far do you want to go? The stock sleeve should be good for 4.00 mm over. I can bore the block for a larger sleeve if you want to go larger.
    TOOLS

  9. #18
    Senior Member chaindrivecharlie's Avatar
    Join Date
    Nov 2013
    Location
    Sheboygan, Wisconsin
    Posts
    373
    Oh wow! I knew 2.5mm, i did not know 4+ was possible. I will keep that in mind, and your services too, thank you Tools!



    Sent from my SM-N920R4 using Tapatalk
    Last edited by chaindrivecharlie; 05-15-2019 at 11:01 PM.
    Charlie

    1972 CL 175 K6
    1972 CL 350 K4
    1981 CM 400 C

    Joshua 24:15

  10. #19
    Sensei 66Sprint's Avatar
    Join Date
    Sep 2008
    Location
    Roanoke, Virginia
    Posts
    24,625
    The bad news is you may have to open up the bottom end of the engine to find and extract those "missing" bits of piston skirt......They went SOMEWHERE....
    chaindrivecharlie likes this.
    "I have a mind like a steel trap.....Old and rusty, of antiquated design, and hard to get stuff back out of...."
    Contact info: E-mail; [email protected] Phone; 540-525-5199

  11. #20
    Senior Member f100owner's Avatar
    Join Date
    Apr 2019
    Location
    Central Texas
    Posts
    170
    Quote Originally Posted by 66Sprint View Post
    The bad news is you may have to open up the bottom end of the engine to find and extract those "missing" bits of piston skirt......They went SOMEWHERE....
    Did I miss something - very likely - but I don't recall seeing broken piston skirts.
    chaindrivecharlie likes this.
    CL350K0
    2016 Harley Ultra Limited
    1971 Ford F100 Flareside (project)
    2016 Ford Expedition
    2018 Ford F150

Page 2 of 8 FirstFirst 1 2 3 4 ... LastLast

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
  •  

Similar Threads

  1. CB200 top end on a '68 CL175 bottom end
    By SodiumHaze in forum Engine Discussion
    Replies: 11
    Last Post: 11-26-2018, 01:02 PM
  2. CB200 top end on a '68 CL175 bottom end
    By SodiumHaze in forum Project Logs
    Replies: 2
    Last Post: 11-17-2018, 11:25 AM
  3. Putting a 350 top end onto a 250 bottom end
    By shoom in forum Engine Discussion
    Replies: 5
    Last Post: 06-27-2018, 08:34 AM
  4. Another CL350 top end clattering 1971 CL350
    By Heliarc in forum Engine Discussion
    Replies: 9
    Last Post: 06-08-2018, 06:31 AM
  5. CB200 Top-End Job - Engine Out of Frame?
    By kirkn in forum Engine Discussion
    Replies: 4
    Last Post: 12-13-2009, 10:32 AM