Help from Suzuki Bandit (250-400) & Yamaha Zeal or 3LN6-7 Owners

maelstrom · May 5, 2015

The Suzuki Bandit 400 (confirmed by @Phil), RF400, and perhaps the 250 also, use a rectangular shaped "o-ring" in the top of the slide housing. Part number is 13278-21E00. As usual, it is not shown in parts books except for the RF400. This part seems to be extinct. However, if I can get the dimensions from a Yamaha slide housing (Zeal or 3LN6/7) then I will be able to determine the amount of stretch that is applied to the part. From there I need the dimensions of the Suzuki slide housing groove and I can then calculate the correct size for the extinct Suzuki part.
Please help.

In this image you can see how much larger the Suzuki part is than the Yamaha Zeal version.

Linkin · May 5, 2015

I will take a look at my 3LN6 carbs for you.

maelstrom · May 5, 2015

Thanks heaps Linkin.
You will have to remove the ring so that you can measure the groove in the slide housing. Length, width and thickness.
cheers
Blair

Linkin · May 5, 2015

Sounds easy enough, if the varnish smell from the carbs doesn't make me puke my guts out!!!

Linkin · May 6, 2015

The groove in the slide housing is 1mm deep and 2mm wide.

Dimesions of the gasket from my 3LN6 slide housing

Length - 37mm
Width - 30mm
Thickness - 1mm

It fits fairly flush with a little bit of play

maelstrom · May 6, 2015

Thanks to Linkin
More work to be done but hopefully by the end of the week this will be sorted.

Linkin · May 15, 2015

Apologies for the delay, here are the measurements

In case it's hard to tell, the channel/valley is 2mm wide and 1mm deep. 33.5mm long by 25.5mm wide