Sundial Moto Sports

Does anybody know what the Suzuki part number is for the petrol tap diaphragm assembly? The Suzuki parts book doesn't show this diaphragm side of the petrol tap disassembled (so no part number).

Olaf

I've never seen one for sale. Just buy a new petcock.

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If you stroke it more than twice; you're playing with it.

Too many bikes, too much time, ENOUGH SPACE, FINALLY! Never enough money.........

A little shop in Germany sells newly manufactured diaphragms. (Use Google translate for English translation.)
https://hard-to-find-parts.de/epages/aff9fb37-1c0b-4b3c-8be3-a10a53d7f9b8.sf/de_DE/?ObjectPath=/Shops/aff9fb37-1c0b-4b3c-8be3-a10a53d7f9b8/Categories/SUZUKI/Luftfilter_Vergaser_Benzinhahn_Auspuff

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BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 73 project
T350 69, 71 & 72 project
T250 72
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE

Not cheap!!! New MAB exhaust system! Really not cheap!!!!

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If you stroke it more than twice; you're playing with it.

Too many bikes, too much time, ENOUGH SPACE, FINALLY! Never enough money.........

I have an original parts manual for my 1969 T350. Was used by a dealership and has the prices penciled in.
From that perspective most parts have gotten really expensive.

But just price out the corresponding parts for a new bike.
Was curious so I just took a look at a dealership website & priced out an exhaust system for a 2013 Honda CB1100.
The 4-into-1 header is $1,773. The muffler is $896.

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BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 73 project
T350 69, 71 & 72 project
T250 72
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE

Welcome to world of classic 2-strokes. You either need to be rich or capable of compromise and ingenuity. New genuine parts cost one arm and two legs, whilst aftermarket parts only cost an arm and one leg.
If you are obsessed with originality it will seriously deplete your coffers. If you just want to make your bike usable, but not standard you can save a lot of pennies. If your crankshaft needs rebuilding, its time to start spending the kids inheritance.

get a 200mm x 200mm square of 0.3mm thick and make your own - i do
cheers, dd.
https://www.ebay.co.uk/itm/Nitrile-Nylo ... c_j9zWgw3A

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GTS250 road registered. TS250 engine, Ramair frame.
GT250 big bang road registered. Both pistons fire the same time. USD forks.
GT285 road registered. Overbored - 58mm and TS125 +2 pistons fitted.
GT10 road registered. '65 T10 engine, GT250 frame.

Thanks DD and jabcb. The German hard-to-find-parts.de was good enough to include a detailed photo of a disassembled diaphragm assembly. Based on this it doen't look too difficult to 'rebuild' my old diaphragm assembly with nitrile sheet. I'll post some photos when I get to it.

Olaf

Unless your particularly interested in retaining the vacuum on/off you can modify the petcock to be off - reserve - on so the diaphragm becomes redundant. This is the route I took retain OEM look but converted to manual operation.

See:
http://www.suzuki2strokes.com/forum/viewtopic.php?f=9&t=12452

I thought I had a post with pictures, if I can find it I ll post a link to that as well.

I did it that way.

http://suzuki-gt250.de/motornavi/motor.php?b=8&m=M1

https://translate.google.de/translate?sl=de&tl=en&js=y&prev=_t&hl=de&ie=UTF-8&u=http%3A%2F%2Fsuzuki-gt250.de%2Fmotornavi%2Fmotor.php%3Fb%3D8%26m%3DM1&edit-text=&act=url

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http://suzuki-gt250.de

a word of warning though, olaf. always punch the holes out before cutting the outline out. holes are close to the edge and it's very easy to split. then you start again when making any gaskets, such as clutch cover etc, i always punch the holes out first, making sure there's plenty of gasket either side of the hole. hollow bore punch set is perfect and sit the gasket on a nice thick piece of hardwood. a good light source over the top of you helps when centreing the punch over the holes.
cheers, dd.

_________________
GTS250 road registered. TS250 engine, Ramair frame.
GT250 big bang road registered. Both pistons fire the same time. USD forks.
GT285 road registered. Overbored - 58mm and TS125 +2 pistons fitted.
GT10 road registered. '65 T10 engine, GT250 frame.