Reed Valve

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vvomit

New Member
Jun 5, 2010
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earth
I have my carb relocated for clearance reasons. I just finished installing a reed valve. I used a puch 4 valve intake and welded the rear to my intake. I'll test it tomorrow.
Reedvalve.JPG
 
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vvomit

New Member
Jun 5, 2010
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earth
It was a flop. Bottom end was great, but mid drops off considerably and no top end. I could not get it over 30mph, but it will cruise around idling at 14-18mph.
 

vvomit

New Member
Jun 5, 2010
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earth
No, it was starved for fuel. plug was a light to med brown. I'm not sure this engine is going to have enough vacuum to open the reeds at higher rpm's.
 

kerf

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Jun 28, 2010
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Birmingham, Al
It would make sense to me, that in order to get the full benefit from a reed valve intake, one might need to modify the piston / port arrangement. Possibly cutting a window through the piston skirt, to allow the intake port to stay open all the way through the the intake stroke. I believe that's how the Trevor Simpson reed valve conversions were done on the Chung Yang R460.
 

killercanuck

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Dec 17, 2009
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Wallaceburg ON
Jag, when you gonna start selling that bolt-on Reed? :)

vvomit, like the guys said you may need a couple of holes in your skirt. Check out what Puch is doing:

Here's link to their site where I found that pic:
puch 70cc reed valve kit especiale check out their other kits for a better idea, along with Jaguar's awesome tips.

Even a few drilled holes in the skirt should help. It's good that your plug is not charcoal, heh heh.

gl, keep us posted :).