Thanks Dave - closer to home than I thought it might be..... in that it was off a DT1 rival. I have 2 of these as they came from a collector of twin Yamahas. YDS1R YDS2R TD1A TD1B TD1C TD2 TD2B are his interest. The plan is to put on them on something smaller than a 250 - I will add something soon to the performance modifications section, and as not standard, any imput would be appreciated.
I remembered that the 1971 ~ 1973 Suzuki TS250's used a similar Mikuni flange mount carburetor like that of the Yamaha DT models of that same period, ... so looked it up ... and sure enough, they used a VM28SH carb . . . (Dt's had a VM26SH).
Also, the stamped number "300" matches the Suzuki model code for those exact years. The number 0 that is stamped right below the 300 might designate the particle year, as sometimes jetting was slightly altered from year to year
This might be a nice "stock looking" upgrade for a 68 ~ 71 Yamaha DT1 model. It'd probably work very well on either a slightly modded bike, or even a bone stock DT1 . . . and perhaps even the DT2 or DT3.
Devin - interesting point as I had wondered if these were 26mm bored out already. Curious to think of what else gets affected when bored out - cutaways on the slide etc, or maybe small enough so doesn't matter. Way outside my knowledge so wouldn't know how to answer.
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Thanks Dave - closer to home than I thought it might be..... in that it was off a DT1 rival. I have 2 of these as they came from a collector of twin Yamahas. YDS1R YDS2R TD1A TD1B TD1C TD2 TD2B are his interest. The plan is to put on them on something smaller than a 250 - I will add something soon to the performance modifications section, and as not standard, any imput would be appreciated.
It's not off a CT3, they have VM24SH fitted and ident on the flange 316E1 or E2.
. . . I'll answer this when I get home tonight.
I remembered that the 1971 ~ 1973 Suzuki TS250's used a similar Mikuni flange mount carburetor like that of the Yamaha DT models of that same period, ... so looked it up ... and sure enough, they used a VM28SH carb . . . (Dt's had a VM26SH).
Also, the stamped number "300" matches the Suzuki model code for those exact years. The number 0 that is stamped right below the 300 might designate the particle year, as sometimes jetting was slightly altered from year to year
This might be a nice "stock looking" upgrade for a 68 ~ 71 Yamaha DT1 model. It'd probably work very well on either a slightly modded bike, or even a bone stock DT1 . . . and perhaps even the DT2 or DT3.
SUZUKI MODEL CODES:
2 cylinder '60's Yamahas have them, that looks newer though , I would guess CT175 , I don't have one to compare