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Main Area => General GS500 Discussion => Topic started by: Reeko236 on February 28, 2015, 09:41:36 PM

Title: blown rod bearing...
Post by: Reeko236 on February 28, 2015, 09:41:36 PM
Howdy folks, I just bought a gs500 with a "blown engine", looks like the bearing on a connecting rod went out (right one in pic). I have seen the engine rebuild thread, and just have a few more questions. It looks like i will definitely need a new rod, but I am wondering if my crankshaft will also need to be replaced, or if I could get by with taking it to a machine shop..

(https://scontent-dfw.xx.fbcdn.net/hphotos-xfa1/v/t1.0-9/10364177_10155285913290650_7891632314118557478_n.jpg?oh=fea1c529ce4aa73dc5f16019ed9a7e64&oe=55910A07)
here you can see rod discoloration
(https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/11038740_10155285913145650_3806880434451625997_n.jpg?oh=a431a27104585a0d25635c741b507177&oe=554D36A4&__gda__=1434703794_6d8691df6b9da94c8216223d202989b7)
connecting rod...


(https://scontent-dfw.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/10959906_10155285913455650_592378966302931752_n.jpg?oh=83d3c92875be9ccd909f2e10c28ae300&oe=557984E3)
(https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xpf1/v/t1.0-9/11024743_10155286044570650_4863664353076885655_n.jpg?oh=080772d85f8e744c3128facb4193ca0a&oe=557D7303&__gda__=1430870908_44d8e3b8e81c30d76c20533a300db2dd)
shaft.. sorry for shitty image quality. out of all that i took this is the only one where you can kind of see what's going on.. looks like the bearing fused to the shaft a bit?


I have been riding and working on bikes for some time (i used to own one of these 500s a while back) but I have no experience rebuilding engines.. I got it cheap and have always wanted to have a go at it.. I figure if it doesnt work out, the frame alone would get my money back :).. Like I said, I have seen the engine rebuild thread, but would like a few more tips.. thanks fellas!
Title: Re: blown rod bearing...
Post by: sledge on March 01, 2015, 03:24:11 AM
No point trying to get the crank ground, there are no undersize bearings available......either pattern or OEM.

Used crank is the way out but YOU MUST identify AND USE the correct size bearings, the procedure is in the manual.
Title: Re: blown rod bearing...
Post by: rg500gamma on March 01, 2015, 04:10:57 AM
Hi all ,  expensive cranks  ( size control in la puente )  o.d. ground down , hard chrome , then o.d.  ground to stock size ,   check   e-bay  sometimes  new stock for less $$$ 
Title: Re: blown rod bearing...
Post by: sledge on March 01, 2015, 10:22:17 AM
Does a rechrome and grind work out cheaper than the cost of a good used crank in your part of the world?

Where I am I could buy at least 5 good used ones maybe even with rods (£25-30 each) for the price of a journal repair (£150 min). In fact....... for 150 I could get a whole engine!

http://www.ebay.co.uk/itm/SUZUKI-GS-500-E-engine-/161256350496?pt=UK_Motorcycle_Parts_13&hash=item258ba0a320 (http://www.ebay.co.uk/itm/SUZUKI-GS-500-E-engine-/161256350496?pt=UK_Motorcycle_Parts_13&hash=item258ba0a320)


NOTE.....another one with a welded sprocket and broken front mount  :D




Title: Re: blown rod bearing...
Post by: Reeko236 on March 01, 2015, 11:28:04 AM
harsh... I'll start looking for a used crank. Thanks!
Title: Re: blown rod bearing...
Post by: rg500gamma on March 01, 2015, 11:11:06 PM
Hi  reeko236 ,  where are you located ?
Title: Re: blown rod bearing...
Post by: rg500gamma on March 01, 2015, 11:30:26 PM
Hi all  buying a used engine , without  being fully dissasembled  , you do not know the condition of the crankshaft ,  not to mention paying for the shipping expense on the used engine , (if not local for you )  do google search  on gs500 crankshaft , as  I have found  new oem stock  for a great price from someone who had spare parts letting them go for a great price . p.s. that engine on e-bay in u.k. looks  pretty  tatty .
Title: Re: blown rod bearing...
Post by: rg500gamma on March 01, 2015, 11:36:51 PM
Hi  Reeko236  , check your p.m.
Title: Re: blown rod bearing...
Post by: rg500gamma on March 02, 2015, 12:24:27 AM
Hi all ,  crankshaft on e-bay usa  for   $119.00  just checked  hurry before it gets  sold
Title: Re: blown rod bearing...
Post by: Reeko236 on March 02, 2015, 12:31:04 AM
looks like that $119 one has some wear on one of the bearing surfaces... not sure how well it would work out. any thoughts?
(http://i.ebayimg.com/00/s/OTYwWDEyODA=/z/ifkAAOSw1vlUysR9/$_57.JPG)
Title: Re: blown rod bearing...
Post by: rg500gamma on March 02, 2015, 12:49:52 AM
Hi  Reeko236  ,   the seller is giving a  D+ rating  as needing some repair  .  well  I will keep looking  and ask  whittier kawasaki  when they open ........
Title: Re: blown rod bearing...
Post by: rg500gamma on March 03, 2015, 07:33:19 PM
Hi all , well after two days of the asking , whittier kawasaki  has no good used cranks  ...........