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Makotosun

CT 3 piston in dt 175

  • mpritch41
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CT 3 piston in dt 175 was created by mpritch41

I have a piston bought for my 1973 CT 175, but now I am in need of a new piston for my 1974 DT 175.
They look and measure the same, except for the windows on the intake side of the piston are smaller.
It sure would be nice if that piston would work in the DT... anyone have Ideas or experience with this set up?
19 Nov 2023 16:53 #1

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Replied by MarkT on topic CT 3 piston in dt 175

Most matched piston/ring sets can be swapped between the street legal 175 Enduros from 1972 to 1981.  (Important to have rings made for the piston part number used) You can even use a Yamaha Blaster piston if you shorten the skirts slightly to match the original piston.

Also when using a different piston always check to make sure the piston ring locating pins in the ring grooves are positioned so that the ring end gaps pass between the ports to prevent snagging a ring in a port..

Oh, and stay away from the Chinese piston kits.  Some are really bad.  Unfortunately hard to know which ones but they can and do severely damage engines if they fail. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
The following user(s) Liked this Post: DVM
19 Nov 2023 17:45 #2

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