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Post by 1970stingerracer12 on Jan 1, 2018 22:46:35 GMT -5
 I've never had a Scorpion with a Mikuni carburetor. I know the Walbro and Tillotson well, but have never worked on a Mikuni. This carb doesn't even have a part number that I can find. It only says Mikuni Kogio MIC. I've searched everywhere on this site, and on Google, and can't even find a picture of one like this. I have a double throttle cable, and one half pulls this lower arm at the same time as the throttle opens. I assume it's some kind of mixture control?? Where can I find a manual on how to adjust this beast? Thanks for any help you can give me. Gary |
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Post by scorp11 on Jan 1, 2018 23:35:18 GMT -5
looks like someone replaced the fuel bowl on your carb with some sort of pump ?? wonder if it is some sort of home made oil pump or something one of those dial a jet type things ??
Not something I can say I have seen before. On the other side of the carb does the inlet have a plastic tube on the airbox side ? Trying to determine if someone converted a power-jet or other mikuni carb.
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Post by 1970stingerracer12 on Jan 1, 2018 23:53:03 GMT -5
The strange thing is that it is using the original fuel pump mounted on the tunnel. There's no extra oil tank. I'm thinking I may put on one of my extra Tillotson carbs. I understand them!
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Post by weverat on Jan 2, 2018 0:39:02 GMT -5
Wow, is it an oil pump?
I have never seen one like this, but that thing on the bottom might even be an accelerator pump.
I would hang it on the wall as shop art, and go get a normal Mikuni from the salvage yard, or better yet a new one from Dennis Kirk
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Post by 1970stingerracer12 on Jan 2, 2018 8:50:02 GMT -5
Thanks guys. An accelerator pump is an interesting thought. I will take it apart just to satisfy my curiosity.
Gary
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Post by 80sting440 on Jan 2, 2018 11:48:41 GMT -5
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Post by 80sting440 on Jan 2, 2018 11:51:18 GMT -5
It looks like you guys are right...accelerator pump it is.
Rene
These large pictures are sure a pain! |
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Post by 1970stingerracer12 on Jan 2, 2018 14:30:02 GMT -5
How did you find that picture Rene? I'm hoping mine works as is. If it's just an accelerator pump, then the adjustment shouldn't matter too much. It moves in sync with the throttle. I have to clean my fuel tank before I start this thing. It has been in storage for many years!
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Post by 1970stingerracer12 on Jan 2, 2018 17:27:59 GMT -5
 It is indeed an accelerator pump. Kind of a cool idea, but I don't like how the spray bar sticks out so far into the intake. I think I'll remove it and plug the hole. It would have been fun to see how it accelerated though! |
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Post by 80sting440 on Jan 2, 2018 19:53:02 GMT -5
Is it a 36 mm carb?
That may also be part of a power jet system???
Now, not only do you have to rejet the main, you'll need to replace the needle jet and jet needle!...having fun yet?
Rene |
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Post by obj1 on Jan 3, 2018 16:02:09 GMT -5
Just what I need! An accelerator pump. I think weverat already is using them!!
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Post by 1970stingerracer12 on Jan 8, 2018 17:43:00 GMT -5
I removed the accelerator pump and plugged the hole the spray bar was in. It seems to run just fine without it. I wonder if this was an ad on, or a factory installation?
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I've never had a Scorpion with a Mikuni carburetor. I know the Walbro and Tillotson well, but have never worked on a Mikuni. This carb doesn't even have a part number that I can find. It only says Mikuni Kogio MIC. I've searched everywhere on this site, and on Google, and can't even find a picture of one like this. I have a double throttle cable, and one half pulls this lower arm at the same time as the throttle opens. I assume it's some kind of mixture control?? Where can I find a manual on how to adjust this beast? Thanks for any help you can give me.
