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Rocker arm wear reference (Read 323 times)
Mekh
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Rocker arm wear reference
11/05/16 at 07:03:32
I have no experience looking at rocker arms, so have no idea what the should look like.
Mine looks worn I think, but... too much? No idea.
Can you judge from the pictures?
Rocker amrs:
Cam shaft
Bearing Surfaces:
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Last Edit: 11/06/16 at 02:08:04 by Mekh
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Dave
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Re: Rocker arm wear reference
Reply #1 -
11/05/16 at 07:47:18
They look badly worn to me. What does the cam look like?
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Mekh
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Re: Rocker arm wear reference
Reply #2 -
11/05/16 at 08:17:02
Have not pulled it out yet, and still pointing downwards so I cannot see the top yet. Will most surely post a photo of that later as well.
Sad to hear they look worn... Can they be fixed or do I need to look for replacement?
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verslagen1
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Re: Rocker arm wear reference
Reply #3 -
11/05/16 at 08:45:26
while they are galled, they are not badly worn.
grind them smooth and polish them.
but that may cause them to loose their hard finish.
new rockers have a hard piece fitted on the end.
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Mekh
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Re: Rocker arm wear reference
Reply #4 -
11/05/16 at 08:53:20
I'm not an expert, but those cam lobes (correct name?) looks quite bad to me.
Are we talking something that can be repaired, or replacements?
If a repair is half-bad solution, then I'll most likely prefer looking for some replacements.
Annoying they look so bad, but then again... better find it now, before something breaks completely.
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Mekh
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Re: Rocker arm wear reference
Reply #5 -
11/05/16 at 08:58:27
verslagen1 wrote
on 11/05/16 at 08:45:26:
while they are galled, they are not badly worn.
grind them smooth and polish them.
but that may cause them to loose their hard finish.
new rockers have a hard piece fitted on the end.
Camshaft and rockers are quite expensive...
350$ for a new cam shaft and 120$ a piece for rocker arms. So new cam shaft and rocker arms would set me back almost 600$...
Hope I can find some used on ebay that are still OK.
Are cam shafts and rockers compatible across all years?
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DavidP
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Re: Rocker arm wear reference
Reply #6 -
11/05/16 at 09:05:41
Those rockers look as bad as mine did when I replaced them, I think a pair was $94 but your experience may be different. I think that you should take the camshaft out and examine the bearing surfaces as well. This engine is well known for top end lubrication issues (which is why you should keep the idle speed at ~1000 rpm or better still start it and just drive off). If the bearing surfaces are shot the manual glibly states that the head should be replaced and that is hugely expensive at ~ $740.
Hopefully you can live with the bearing surfaces and perhaps just polish the cam with some fine emery.
Good luck
tl;dr don't invest in new rockers if the head is shot.
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Ruttly
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Re: Rocker arm wear reference
Reply #7 -
11/05/16 at 09:14:10
My evaluation from your pics is bad , bad , bad & bad , replace all. What happened did you run it low on oil ?
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Mekh
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Re: Rocker arm wear reference
Reply #8 -
11/05/16 at 09:36:19
No, I have taken care to keep (good) oil on it and idle revs up, but the former owner may have abused it. No way for me to know.
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Tocsik
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Re: Rocker arm wear reference
Reply #9 -
11/05/16 at 09:42:08
Mekh,
Sorry you're seeing this wear. Can you let us know how many miles are on your bike, if you routinely kept the idle speed up, ran it low on oil or let it idle on the side stand frequently? The information may be useful to others.
Thanks.
Oops. Your post came while I was typing mine. Disregard.
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norm92de
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Re: Rocker arm wear reference
Reply #10 -
11/05/16 at 09:54:26
I hate to have to say this but they are, in my opinion, too far gone.
Hope you will be able to find good used parts.
Sadly Suzuki is very proud of their replacement parts. :'(
Let us know what happens.
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2014 S40. Raptor. idle mixture adj.Needle raised one notch. 4000' altitude. Stock jets. Shell Rotella synthetic.
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SALB
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Re: Rocker arm wear reference
Reply #11 -
11/05/16 at 12:11:45
Assuming the head is still serviceable, My next thought would be if the cam is too far gone to be used as a core for a webcam.
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LANCER
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Re: Rocker arm wear reference
Reply #12 -
11/05/16 at 12:16:48
The cam and rockers are indeed bad but the cam may be repaired IF the bearing surfaces of the cam are not damaged like the lobes. The rockers must be replaced though; expect $110
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Mekh
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Re: Rocker arm wear reference
Reply #13 -
11/05/16 at 13:01:51
Bearing surfaces looks good both on the cam and head I think, so that's a good thing
Cam repair... I ask a dealer I suppose?
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LANCER
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Re: Rocker arm wear reference
Reply #14 -
11/05/16 at 13:41:21
Mekh wrote
on 11/05/16 at 13:01:51:
Bearing surfaces looks good both on the cam and head I think, so that's a good thing
Cam repair... I ask a dealer I suppose?
It costs no more to repair to stock spec's as it does to repair to Performance spec's.
This is what I do.
$299 with your cam.
It takes a few weeks.
PM me for shipping details if you are interested.
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