YS 140 sport problem

[Bill Glaze]

John:
Another Good Reason:  You love bearing changing?  Bill Glaze  (oops)

John Pavlick wrote:

>Holy sh*#... This YS stuff sounds like the old AMF days at Harley (valve
>seats falling out, valves bending and sticking because the guides were too
>short ['79], etc.). Lately, a few people have asked me why I don't fly a
>4-stroke in my pattern plane. My answer is: "Because O.S. doesn't make one
>big enough". Uh-oh, I hope I didn't start something here. So much for things
>being quiet on the list...
>
>John Pavlick
>http://www.idseng.com
>
>
>  
>
>>-----Original Message-----
>>From: discussion-request at nsrca.org
>>[mailto:discussion-request at nsrca.org]On Behalf Of Joe Dunnaway
>>Sent: Friday, March 25, 2005 11:35 PM
>>To: discussion at nsrca.org
>>Subject: Re: YS 140 sport problem
>>
>>
>>I saw this happen on a 140 L at one of the contests last year...
>>Talked to
>>the guy at the next contest and he had put the seat back in and peened
>>around it.  He said it worked fine.
>>
>>Joe
>>
>>----- Original Message -----
>>From: "Bob Kane" <getterflash at yahoo.com>
>>To: <discussion at nsrca.org>
>>Sent: Friday, March 25, 2005 10:28 PM
>>Subject: Re: YS 140 sport problem
>>
>>
>>    
>>
>>>Wow, that is a new one on me. I would send it back to
>>>YS Performance for a new head. My guess is the seats
>>>are cast in place, there is little you could do to
>>>repair it.
>>>
>>>--- iflyrc24 <iflyrc24 at columbus.rr.com> wrote:
>>>      
>>>
>>>>I was trying to start my YS 140 Sport and could not
>>>>get it to fire. While cranking with the starter the
>>>>compression went totally away. I took the valve
>>>>cover off and noticed the intake valve clearance was
>>>>about 1/8" or so. I pushed in the valve to see if it
>>>>was stuck and it fell into the cylinder. I removed
>>>>the head and the intake valve and seat assembly came
>>>>out of the head fully assembled with spring and
>>>>keepers in tact.
>>>>
>>>>Can the intake assembly be reinstalled in the head
>>>>and what holds it in place? Other than aligning the
>>>>intake ports is there any other alignments to watch
>>>>for?
>>>>
>>>>        
>>>>
>>>Bob Kane
>>>getterflash at yahoo.com
>>>
>>>
>>>
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>>>      
>>>
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