logo
Home For The Original Vintage Ski-Doo oldski-doosleds Message Board Since 2003!
Where the experts hang out. Portal for oldski-doosleds web site.
Click here for Snowmobile Events
#oldski-doosleds #vintageski-doo #vintageskidoo © 2019
Welcome, Guest. Please Login or Register.
August 23, 2019, 09:40:46 AM
Home Help Search Login Register
News: See Terms in Help Desk Area Before Using This Message Board.

  oldski-doosleds' Vintage Ski-Doo Message Board
  oldski-doosleds Message Board
  One-Lunger Help Desk (Only)

  1963 247 Bored Out
� previous next �
Pages: [1] Reply Notify of replies Send the topic Print 
   Author  Topic: 1963 247 Bored Out  (Read 259 times)
old doo
Boardnation God
*****

Posts: 479



I love Boardnation!

View Profile E-Mail
1963 247 Bored Out
« on: March 26, 2019, 11:17:15 AM »
Reply with quote

My '63 247 is low compression, less than 90 PSI. Currently bored .035" above standard with end gap of .020". Your thoughts on finding .040" over piston & rings and re-bore? Agree that would be the next step?  Thanks, -Doug
Report to moderator Logged

'61 '63 '63 '64 '64 '65 '65Chalet '66 '66S '67 Oly and 2005 GSX
GaWajn
Boardnation God
*****

Posts: 2173





View Profile E-Mail
Re:1963 247 Bored Out
« Reply #1 on: March 26, 2019, 06:24:24 PM »
Reply with quote

Depends on how much it is out of round, and how much taper is in the cylinder. 5 thousanths might not be enough to get everything back into spec ... and then again ... maybe it is enough. An accurate measurement of the bore is in order before deciding how to proceed. That's my 2 cents worth ...
Report to moderator Logged

1970 Ski Doo TNT 292 Bogie (Restored)
1974 Ski Doo Elan (Habs - custom)
old doo
Boardnation God
*****

Posts: 479



I love Boardnation!

View Profile E-Mail
Re:1963 247 Bored Out
« Reply #2 on: March 28, 2019, 08:46:44 AM »
Reply with quote

New plan is to swap out the '63 jug, piston and rings with a '66 set that is not worn out.
Report to moderator Logged

'61 '63 '63 '64 '64 '65 '65Chalet '66 '66S '67 Oly and 2005 GSX
Pages: [1] Reply Notify of replies Send the topic Print 
� previous next �
Jump to:  

oldski-doosleds' Vintage Ski-Doo Message Board
Get your Ad Free Message Board at Boardnation!   © 2013 Boardnation  Web hosting by Nubis