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JC EVO 120 report

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Old 05-01-2012, 07:32 PM   #101
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Old 05-01-2012, 07:33 PM   #102
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Old 05-02-2012, 07:08 PM   #103
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Default Re: JC EVO 120 report

Well, after waiting and waiting and waiting... TWO days my motor is here!

I have questions- IS it possible to rotate the carb/ isolator block/ reed valve block 180* from the stock position? As it sits it is on the opposite side of the carb from the DA-100 I have in my plane now. I can use a longer pulse line if I can rotate the carb itself-- but I really really don't want to move my throttle servo, push rod, etc. to the other side of the airplane...

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Old 05-03-2012, 05:40 AM   #104
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Default Re: JC EVO 120 report

Yes It can be rotated however keep pulse line length to a minimal if you just rotate the carb. The fuel line inlet will be somewhat awkward as I don't think you can rotate it back to fire wall. Tom or Milton might know that answer. I apologize for the 2 day delivery time.



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Old 05-03-2012, 05:40 AM   #105
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Old 05-03-2012, 05:48 AM   #106
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Default Re: JC EVO 120 report

The fuel inlet fitting on the WJ-71 can easily be rotated to whatever position you need. I would recommend rotating the ambidextrous intake and reeds with the carb.

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Old 05-03-2012, 05:55 AM   #107
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Default Re: JC EVO 120 report

Yes it can be rotated but there are two thing that you will run into by doing this.

First as Justin said is the fuel inlet tube, It is pressed in and can be rotated but I have seen them break while trying to do it.

Second is air prop blast will be hitting the pump diagram and you will need to cover it with something so it will not effect the pump diagram in the carb.

I would suggest leaving it as it is and make the modification needed to make it work.

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Old 05-03-2012, 06:17 AM   #108
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Default Re: JC EVO 120 report

Some Walbro carb shafts can be taken out and put in from the other side. Not sure on the 71 carb...
How come JC didn't drill the carb bolt holes to make the shaft parallel to the cylinders ?

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Old 05-03-2012, 08:17 AM   #109
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Default Re: JC EVO 120 report

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The fuel inlet fitting on the WJ-71 can easily be rotated to whatever position you need. I would recommend rotating the ambidextrous intake and reeds with the carb.
This is what I was hoping for. I'm just not motivated to re-do the inside of the airframe- I'm going to need to make a new throttle linkage anyway, but that's better then the alternatives. I suppose there is no substitute for actually taking it apart and rotating the reed block. I'm a little nervous about rotating the fuel inlet, so the fuel line will just make a U turn. I will block/ redirect the hole in the cowl so the airstream does not interfere with the carb diaphragm.

Thanks for the help guys-
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Old 05-06-2012, 09:49 PM   #110
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Default Re: JC EVO 120 report

Side by side with DA-100



IMAC JC EVO 011.jpg   IMAC JC EVO 012.jpg   IMAC JC EVO 013.jpg   IMAC JC EVO 014.jpg   IMAC JC EVO 015.jpg  

IMAC JC EVO 016.jpg   IMAC JC EVO 017.jpg   IMAC JC EVO 018.jpg   IMAC JC EVO 019.jpg   IMAC JC EVO 020.jpg  

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