Author Topic: Never seen one of these before.  (Read 3741 times)

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Offline Mike52

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Never seen one of these before.
« on: September 13, 2015, 03:26:30 PM »
Just fixing a ER 185 for a mate and noticed this .

When you think about it it's a very smart idea.
Wonder how one would work on a PE ?
85/400WR,86/240WR,72/DKW125,Pe250c,TC90,TS100,XT250,86/SRX250,XR400r
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Offline John Orchard

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Re: Never seen one of these before.
« Reply #1 on: September 13, 2015, 05:36:58 PM »
I think a few of the mid 80's KX had an oval bore carb.  Back in '85 I oval bored the flatslides on my GSXR750, made a big difference to that.
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Offline tony27

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Re: Never seen one of these before.
« Reply #2 on: September 13, 2015, 07:09:20 PM »
Have a couple of Oko D slide carbs for my Sherco that are like that although not to the same effect, up until 1/2 throttle they flow like a 28mm but when wide open are more like a 30mm so you kind of get the best of both worlds
« Last Edit: September 14, 2015, 10:30:02 AM by tony27 »

Offline Nathan S

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Re: Never seen one of these before.
« Reply #3 on: September 13, 2015, 07:29:36 PM »
Standard on mid-80s KX125s and KDX200s. This looks like the smaller one from an 83-85 KDX (and possibly 82/83 KX125?), due to the choke location.

I hate them with a passion, due to the absence of a idle mixture screw.
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Offline Mike52

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Re: Never seen one of these before.
« Reply #4 on: September 14, 2015, 08:06:20 AM »
This one has all the standard stuff Nathan including a idle mixture screw.
Does have a weird jet needle setup tho.
85/400WR,86/240WR,72/DKW125,Pe250c,TC90,TS100,XT250,86/SRX250,XR400r
Friend  struggling up a hill on a old bike at MTMee .http://www.youtube.com/watch?v=cjj6E2MP9xU.

Offline Lozza

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Re: Never seen one of these before.
« Reply #5 on: September 14, 2015, 08:13:07 AM »
Dellorto VHSB still has it
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Offline LWC82PE

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Re: Never seen one of these before.
« Reply #6 on: September 14, 2015, 08:33:24 AM »
TS250 uses that same carby found on the TS185. Just has different jetting.
Wanted - 1978 TS185 frame or frame&motor. Frame # TS1852-24007 up to TS1852-39022

Offline Nathan S

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Re: Never seen one of these before.
« Reply #7 on: September 14, 2015, 03:25:10 PM »
This one has all the standard stuff Nathan including a idle mixture screw.
Does have a weird jet needle setup tho.

That's interesting to know. I assume the TS ones are smaller again. Any idea of the minor and major dimensions of the throat?
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Offline matcho mick

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Re: Never seen one of these before.
« Reply #8 on: September 14, 2015, 07:28:18 PM »
small honda singles (XL185's etc) have "hour glass" sectioned venturi', :P
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Offline LWC82PE

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Re: Never seen one of these before.
« Reply #9 on: September 14, 2015, 08:23:06 PM »
They are classed as a 29mm carby.

found this photo i already had

« Last Edit: September 14, 2015, 08:38:16 PM by LWC82PE »
Wanted - 1978 TS185 frame or frame&motor. Frame # TS1852-24007 up to TS1852-39022