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78 550 cylenders

  • Thread starter Thread starter boba
  • Start date Start date
B

boba

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ok, i i have all my parts to do the top end of my 550,except... when ordering parts i didnt get 4 orings for the bottom of the cylenders. i only have 3 now the other should be here someday. anyway it looks like they dont match up with anything, they just fit around the bottom of the cylenders. maybe sealing the cast iron to the aluminum? do i even need to replace them?

how do you post a pic on here?
 
There should be a ring at the bottom of each cylinder where the o-ring fits. You need to dig out the old ones.
 
chef1366 said:
There should be a ring at the bottom of each cylinder where the o-ring fits. You need to dig out the old ones.
Click to expand...
yes, but are they something that have a vital function and have to be replaced?
 
Yes, if they werent vital, they wouldnt be in there.
Lesson number one on a motorcycle engine rebuild: There ARE no un-needed/extra parts...
 
I've heard no but I replaced mine. Suzuki put them there for some reason.
 
boba said:
maybe sealing the cast iron to the aluminum?
Click to expand...

exactly :)

the seals are needed due to the different heat expansion rate for the two materials - and oil from the crankcase finding its way inbetween the two
 
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