Worn Carb body, another busted plate(pics)


7 replies to this topic
  • bluebike1999

Posted March 12, 2009 - 02:42 AM

#1

my slide plate craked about a year ago, and seeing i knew it was a common 99 problem i was surprised to get to approx 22000 km before it happened so i replaced it and its happened again 12 months later

Upon closer inspection, we noticed a couple of 'ruts' worn in the body and you cant buy just the body and a new carby costs a gazzillion dollars.

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another thing, i know there has been issues with which way the seal on the slide should be fitted...facing with the flange facing away from the plate or facing the plate???


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so, how do i 'fill ' the ruts?.. thought of getting bigger wheels on the trolley thingy (needle valve) but i think a more logical solution is required

  • GCannon

Posted March 12, 2009 - 12:59 PM

#2

Call them: http://www.sudco.com/

Let us know if they are any help.

Click International Distributors and call em.

  • Frostbite

Posted March 12, 2009 - 03:11 PM

#3

another thing, i know there has been issues with which way the seal on the slide should be fitted...facing with the flange facing away from the plate or facing the plate???


Yes, in my opinion in makes all the difference. the rubber O ring is actually slightly V'd. I believe it acts as a damper between the slide and the plate. There are a lot of pulses hammering the plate around. if you install the o ring backwards, it has zero damping effect, and I believe this causes so many 2nd throtle plates to break so soon. I have a pic from an old thread, i'll see if i can find it.

  • Frostbite

Posted March 12, 2009 - 03:19 PM

#4

Here it is. This is my own diagram and my own theory. I never did find any documentation to back it up, but I think it will make sense to you. One way the O ring does nothing, the other way it provides a cushion between plate and slide. They wouldn't put it in there for no reason, so it must be a damper.

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  • bluebike1999

Posted March 13, 2009 - 02:21 PM

#5

Frostbite
thanks once again...it is one of those 'aha' moments and you have nailed it on the head.
just waiting for one of those $130au tiny little flat plates to arrive and then its away again
call in and say G'day here if you get a chance
www.trailriderz.com.au

  • Frostbite

Posted March 13, 2009 - 02:46 PM

#6

Frostbite
thanks once again...it is one of those 'aha' moments and you have nailed it on the head.
just waiting for one of those $130au tiny little flat plates to arrive and then its away again
call in and say G'day here if you get a chance
www.trailriderz.com.au



That may not be as far fetched as it seems. A couple of years ago I went to Jerez, Spain for the first MotoGP of the season. I'm thinking that Philip Island may be my next destination. I'll definitely give you a call if I'm in the neighborhood.:)

  • William1

Posted March 13, 2009 - 04:43 PM

#7

The grooves in your carb body are not too bad, I have seen much, much worse.

  • Krannie McKranface

Posted March 13, 2009 - 07:17 PM

#8

Just glue the plate in place, with the oring, with Scotch 3m Weatherstrip adhevsive. That's the Honda team 1x trick.




 
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