SuzukiSavage.com - May have ruined engine.

DragBikeMike Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 4406 Honolulu	Re: May have ruined engine. Reply #45 - 04/12/20 at 00:20:31 Oil from the pump discharge enters the clutch cover here (circled in red). It travels up an internal passage in the cover and enters the filter cavity.
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DragBikeMike Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 4406 Honolulu	Re: May have ruined engine. Reply #46 - 04/12/20 at 00:23:10 The oil enters the filter cavity here (circled in red). Then it surrounds the filter and passes through the paper filter media.
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DragBikeMike Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 4406 Honolulu	Re: May have ruined engine. Reply #47 - 04/12/20 at 00:25:10 Filtered oil then enters this hole where it is distributed to the crank, top end & transmission.
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DragBikeMike Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 4406 Honolulu	Re: May have ruined engine. Reply #48 - 04/12/20 at 00:29:25 There is a seal in the cover. The seal fits over the end of the crankshaft. It keeps the oil from leaking past the rotating crankshaft, which would degrade pressure and prevent lubrication from getting to the rod bearing and cylinder. This is the crankshaft supply port and the seal.
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DragBikeMike Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 4406 Honolulu	Re: May have ruined engine. Reply #49 - 04/12/20 at 00:31:52 Another internal passage in the cover directs oil from the filter up to the groove in the cover. This groove distributes oil to the top end and the transmission. Top end supply exits in this area. There is a port in the mating surface of the crankcase.
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DragBikeMike Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 4406 Honolulu	Re: May have ruined engine. Reply #50 - 04/12/20 at 00:34:10 Transmission oil exits in this area of the clutch cover groove. There is a small brass orifice in the mating surface of the crankcase that controls oil flow to the transmission.
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stewmills Serious Thumper Offline Imagination is more important than knowledge Posts: 2641 Auburn, AL Gender:	Re: May have ruined engine. Reply #51 - 04/12/20 at 06:47:08 Thanks DBM. Saved me a trip to the shop this morning.
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Bokobob Junior Member Offline SuzukiSavage.com Rocks! Posts: 96 Gastonia, NC Gender:	Re: May have ruined engine. Reply #52 - 04/12/20 at 07:57:32 Posts with photos by Stew and DBM are very enlightening. Thank you. Thanks also to all others....
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Bokobob

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Re: May have ruined engine.
Reply #53 - 04/12/20 at 09:11:50

HALLELUJAH, THE THUMPER HAS RISEN.....

I am delighted to report that the bike is now running again and well at that.
New filter.
Replacement three-sided filter cover.
New O Rings.
New spring.
New oil. Rotella T4

Buttoned it up.

Started it up with full choke and it caught nicely and I let it run for a good minute or so with full choke. Gradually I pushed in the choke and let it idle for ten minutes.

I rode it around my no-traffic neighborhood for ten minutes, taking it easy, but eventually "goosed" it hard from 20 MPH to 40 MPH in second gear. Ran fine. Took it out for a short run on country roads, but had to come home after just two miles because it had started to sprinkle a little bit and so felt it wise to return home.

As said I feel certain I had not put the filter in backwards but I could be wrong....After all, I am a geezer. (I do point out again that before the failure I rode the bike for 200 miles in the couple of days after I put in the new oil several days ago. ) My strong hunch is that when I started it up immediately before the failure a few days ago, I revved it up a good bit with full choke on and the oil pressure was perhaps enough to blow out the filter cover. I say that as a hunch...Whatever the exact cause was, may never be known, but I am so pleased to have it fixed.

A thousand thanks and more to all of you for your comments.

I am grateful to have learned so much from this thread.....

Grace + Peace,

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« Last Edit: 04/12/20 at 10:55:36 by Bokobob »

Bob
84 and still riding
2009 S40 650, and Rebel 250
Gastonia, NC

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ohiomoto Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2778	Re: May have ruined engine. Reply #54 - 04/12/20 at 12:27:59 Glad you got it worked out, but never idle your bike for 10 minutes. It would be better to put it on half-choke and ride away within 30 seconds. Once it warms up the rest of the way push the choke in the rest of the way.
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: May have ruined engine. Reply #55 - 04/12/20 at 12:41:16 Id have to dissect that old filter and see what I could find
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norm92de Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1180 El Paso TX Gender:	Re: May have ruined engine. Reply #56 - 04/12/20 at 13:08:05 I second ohiomoto. Never idle your bike any more than necessary. There is no cooling airflow and the exhaust-cylinder head gets much hotter than it should. Your engine will thank you for it. It may even send an email.
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Bokobob

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Gastonia, NC
Gender: male

Re: May have ruined engine.
Reply #57 - 04/12/20 at 14:25:31

Thanks for tip to not idle very long...Forgot that it is air cooled.

The old filter looks perfectly fine..Not a single blemish. I'll open it up and see what is inside as suggested...(The relief valve seems to function ok. I have no way to check how much resistance it has.)

It has been raining steadily all day after the brief check-out ride so I have not been able to do any more riding today...

I am looking forward to taking short rides for a day or two before venturing out for longer rides. (A long ride for me is close to an hour..that is all I can handle with this old body.)

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Bob
84 and still riding
2009 S40 650, and Rebel 250
Gastonia, NC

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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: May have ruined engine. Reply #58 - 04/12/20 at 19:41:58 Just a guess, but the fact that you stated that the filter cover was hard to reassemble makes me think that the filter slipped slightly off center when you replaced the cover , (crushing the spring) your ride may have shifted it as you returned home moving it just enough to block the discharge passage.
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jcstokes Serious Thumper Offline SuzukiSavage.com is very useful Posts: 2119 Mauku New Zealand Gender:	Re: May have ruined engine. Reply #59 - 04/12/20 at 22:18:52 Since I've just done oil and filter change for the first time, do any of you techies have a sequence for replacing the cover bolts?
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