facebook1 youtube1 twitter1 instagram linkedin1 pinterest1

NOTICE:  If you are not a free registered member of the site, you will not see the photos in the forum, and you won't be able to access our premium member content. Please consider joining our community! REGISTER AND MAKE THIS BOX DISAPPEAR!

×

Pictures Posting Not Working (12 Jun 2023)

Picture uploads is again unavailable. We are working on the problem. Thanks for your patience.

Makotosun

CT1 piston pin length

  • adguy2112
  • adguy2112's Avatar Topic Author
  • Offline
  • Site Supporter
  • Site Supporter
  • Posts: 484
  • Likes received: 313

CT1 piston pin length was created by adguy2112

Hi all, just received partzilla delivery on a 71 CT1 Top end, the replacement piston pin is 10mm shorter than what came out of the bike, i now see an alternate pin number is listed as well 251-11633-00-00 with the shorter pin #137-11633-10-00. anyone come across this and what wax the preferred resolution? figuring the other part number is likely a longer version, 
23 Sep 2024 23:00 #1

Please Log in or Create an account to join the conversation.

  • Posts: 1202
  • Likes received: 785

Replied by Swoop56 on topic CT1 piston pin length

The # 251 pin is the correct one for a 175 . The # 137 pin will be for a 125 .
The following user(s) Liked this Post: MarkT, Ht1kid, adguy2112
23 Sep 2024 23:16 #2

Please Log in or Create an account to join the conversation.

  • Posts: 519
  • Likes received: 367

Replied by pabdt on topic CT1 piston pin length

if you take the part number in question and put it in partzilla search, you can then check bikes this part will work on. use the "fitment" option.
1974 Yamaha DT125A
1974 Yamaha DT360A with SP96 Exhaust
Next…196x-197x Yamaha something.
The following user(s) Liked this Post: Sneezles61
24 Sep 2024 20:36 #3

Please Log in or Create an account to join the conversation.

  • Posts: 65
  • Likes received: 10

Replied by landyr67g on topic CT1 piston pin length

hmmm...glad there are other dummies out there because this just happened to me a few months ago! Not sure how it happened....maybe I was shopping using my pdf parts manual and read wrong number from the AT page instead of the CT page.
Anyway, I discovered the mistake (after having my rebuilt crank and new piston assy balanced)...right when installing the piston onto the rod with the engine back in the frame. Thought about it a couple days and decided I could never forget if
I kept with the wrong pin. So tore down the engine and paid a bunch more to get everything re-balanced with correct pin. An expensive set back but its all back together now.
Regards,
Joe M
24 Sep 2024 22:23 #4

Please Log in or Create an account to join the conversation.

Moderators: yamadmin, Makotosun, DEET, Vinnie, James Hart