Classicyams Forum
Welcome, Guest
Please Login or Register.    Lost Password?
Classicyams Forum Classicyams Forum Classic Yamaha restoration
1964 yamaha ydt1 pistons (1 viewing) (1) Guests
Go to bottom Post Reply Favoured: 0
TOPIC: 1964 yamaha ydt1 pistons
#31
lifeofthe88 ()
User Offline Click here to see the profile of this user
Gender: Male Location: topeka,ks
1964 yamaha ydt1 pistons 9 Months, 2 Weeks ago  
any idea the correct replacement size.currently got one stuck to cylinder wall.was lettin it soak in brake fluid but i smacked it past the exhaust and carb ports.not sure what is best solution for removing it.any ideas?
 
Report to moderator   Logged Logged  
  The administrator has disabled public write access.
#32
Ludy ()
User Offline Click here to see the profile of this user
Re:1964 yamaha ydt1 pistons 9 Months, 2 Weeks ago  
Try first to find replacementsparts before going any further. As those pistons were bad anyway, I rebuild the old motors with DT125R conrods and DS7 pistons (and a 3mm extra aluminium cylinder _base_ gasket as the conrods are longer) They run very well.. You can have the partnumbers if you like!
In a case like this the safest way is to bore out the pistons as with a re-bore.
Ludy Beumer
 
Report to moderator   Logged Logged  
  The administrator has disabled public write access.
#33
lifeofthe88 ()
User Offline Click here to see the profile of this user
Gender: Male Location: topeka,ks
Re:1964 yamaha ydt1 pistons 9 Months, 2 Weeks ago  
thank you so much for your much appreciated advice.i will follow your recomendations. would greatly appreciate the parts number so i can look them up on the web. i live in the usa.
 
Report to moderator   Logged Logged  
  The administrator has disabled public write access.
#34
lifeofthe88 ()
User Offline Click here to see the profile of this user
Gender: Male Location: topeka,ks
Re:1964 yamaha ydt1 pistons 9 Months, 2 Weeks ago  
http://cgi.ebay.com/ebaymotors/Yamaha-DS7-Cylinders-Pistons-set-RD250-RD-R5_W0QQcmdZViewItemQQcategoryZ35595QQihZ001QQitem
Z110223772110QQrdZ1QQsspagenameZWDVW. these work?will these cylinder bolt on the ydt?
 
Report to moderator   Logged Logged  
  The administrator has disabled public write access.
#35
Ludy ()
User Offline Click here to see the profile of this user
Re:1964 yamaha ydt1 pistons 9 Months, 2 Weeks ago  
No, everything is different in size. Crankcases, studbolts, etc. You can swap DS7/R5 parts with RD250/350 (but not RD400 as it has a long stroke crank).You can only use the pistons/rings. But who wants used pistons when you are restroring a bike? Normally it never functions well.
 
Report to moderator   Logged Logged  
  The administrator has disabled public write access.
#36
Ludy ()
User Offline Click here to see the profile of this user
Re:1964 yamaha ydt1 pistons 9 Months, 2 Weeks ago  
You send me a normal e-mail, then I can send you the part numbers!
Ludy Beumer
 
Report to moderator   Logged Logged  
  The administrator has disabled public write access.
Go to top Post Reply
Powered by FireBoard
 
All Articles
Links
Contact Us
Forum
Guestbook
Newsletter
    DESIGN: REMKO VISSER