reed valves ???

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09 May 2012 14:10 #521009 by pete greek1
reed valves ??? was created by pete greek1
I bought a valve cover on e-bay, and had it sent out to get chromed,it didnt have reed valves.and am having trouble getting them out of my original cover without damaging them. question is,,are they needed, when the way my mechanic has it set up, is with ajust a hose going from the right side to the left side I guess {blocked off}?......this is on a 1980 LTD 1000.thanks for any oppinions on this subject ..as my mechanic left the state with no forwarding #..Pete

1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!

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09 May 2012 16:50 #521032 by dshelly
Replied by dshelly on topic reed valves ???
Reed valves? On a 1980? Sure you don't have a J motor? Either way, don'tneed them. APE sells block off plates for those.

Occupation:Machinist 25+ exp.
'77 Kz1000B1
'78 Kz1000A2
'76 Kz900LTD

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09 May 2012 17:43 - 09 May 2012 17:51 #521049 by Powerstroke_fan
Replied by Powerstroke_fan on topic reed valves ???
The 1980 has emissions so they have reed valves.and you shouldnt need them as long as you keep your hose hooked to each other.The bike came stock with a factory air box and all the emmision setup was hooked thru it. when you remove the airbox it makes the emssions setup not work properly either. If you left the hoses routed like stock it will pop and backfire on deceleration. So by routing the two together you are basicly just plugging it off. Nice bike by the way!!!

1980 kz1000B4 LTD- 1327cc 9-1 comp
Ported J model head
Psp-3x cams
RS 36s
Welded MK11 crank
Back-cut MK11 trans
MTC 2 stage lock up
Stretched 4-6 over running Hayabusa rear rim with 190 rear tire
Complete frame brace kit installed
And Much Much more- SOLD

2014- ZX14R all stock for now
Last edit: 09 May 2012 17:51 by Powerstroke_fan.

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10 May 2012 09:30 #521196 by loudhvx
Replied by loudhvx on topic reed valves ???
On the 550's, the reed valves have the rubber seal for the small covers. Without the reed cages, the covers won't seal. You 'll have to make some paper gaskets or use sealant.

Many times the reed cages will break before coming out. They are very brittle and weak.

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11 May 2012 15:03 #521572 by pete greek1
Replied by pete greek1 on topic reed valves ???
thanks for all the info,...was finaly able to get them out,& install them in the chrome cover

1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!

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12 May 2012 20:56 - 12 May 2012 20:57 #521857 by LarryC
Replied by LarryC on topic reed valves ???
If you don't use the reed valves BUT do run the stock reed valve covers with a hose connecting the 2 covers, then you need to plug the holes leading from the exhaust port up into the valve cover where the reeds were.

Without the reed valves, it's a path for hot exhaust gas to rise up there.

If you just run block off plates you're good to go.

And the reed valves started in 1979 models.

Larry C.
Last edit: 12 May 2012 20:57 by LarryC.

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12 May 2012 23:15 #521895 by pete greek1
Replied by pete greek1 on topic reed valves ???
I was able to get the reed valve out of the original valve cover & everything went in to place perfectly..thanks for your info !!!!Pete

1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!

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