So I had a knock in engine end of last season. - BMW Luxury Touring Community
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post #1 of 13 Old May 25th, 2018, 9:12 am Thread Starter
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So I had a knock in engine end of last season.

Also found a used motor thinking the worst and got a good off season price.

Then I pulled lower end cover, last week.
All connecting rods were ok, except front cylinder #1?.
It had a noticable play in it.
First thought bearing cap failure.
I take off bolts and cap, and found no bearing at all?
Then I reached into the rod, found a very small piece of what was left of the bearing.
So I ordered bearing from amazon, $33 for one cap, not a good price.
Then I realized ordering one at a time, too expensive.
Seeing that maybe my rod or cap could be oval shaped or warn, I bought a set of used pistons with rods with caps on ebay.
So now I had put in 2 bearing caps on the #1 piston, torqued it down and ready to close back up.
Next problem is. Where did all the metal go, lesson learned, I would say dropping oil pan every other year or so would be a great idea.
A magnetic drain plug does not hep, all of this material is non ferrious metal.
See attached pictures.
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post #2 of 13 Old May 25th, 2018, 9:14 am Thread Starter
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Re: So I had a knock in engine end of last season.

Quote:
Originally Posted by jenkinskg View Post
Also found a used motor thinking the worst and got a good off season price.

Then I pulled lower end cover, last week.
All connecting rods were ok, except front cylinder #1?.
It had a noticable play in it.
First thought bearing cap failure.
I take off bolts and cap, and found no bearing at all?
Then I reached into the rod, found a very small piece of what was left of the bearing.
So I ordered bearing from amazon, $33 for one cap, not a good price.
Then I realized ordering one at a time, too expensive.
Seeing that maybe my rod or cap could be oval shaped or warn, I bought a set of used pistons with rods with caps on ebay.
So now I had put in 2 bearing caps on the #1 piston, torqued it down and ready to close back up.
Next problem is. Where did all the metal go, lesson learned, I would say dropping oil pan every other year or so would be a great idea.
A magnetic drain plug does not hep, all of this material is non ferrious metal.
See attached pictures.
So end result, the oil pan traps so much beacause of it design, I do not doubt mine has stuff in it for a few oil changes

2000 K1200LT & 86 K75 for fun again

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1992 BMW K75
1994 Suzuki Intruder 1400
1985 Goldwing
1977 Yamaha RD400
1982 Honda MB5
1979 Yamaha XS 650

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post #3 of 13 Old May 25th, 2018, 12:53 pm
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Re: So I had a knock in engine end of last season.

When a bearing gets that torn up, the crankshaft will have some damage too. Did you inspect that too, including measuring for out-of-round?
Also, all that babbitt debris can work its way into the engine's oil gallery as well. Typically, when bearing disintegration leaves chunks like that behind, the engine should some apart so all the oil passages can be cleaned.

In the past I too have just replaced rod bearings in an engine that had a slight knock, but it did not have flakes of bearings in the bottom of the oil pan.

Dave
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post #4 of 13 Old May 25th, 2018, 4:53 pm
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Re: So I had a knock in engine end of last season.

I would like to see a picture of the crank journal. # 1 is the first one to get starved for oil if it runs low, so I suspect the level got a bit too low. Also is the rod a black or brown color. If black that is a sign of overheating due to oil loss. I have seen that in two of the dead engines I have removed from LTs.

Here are a few shots of one of the cranks.

#4 looks really good, #1 is shot and the next shot shows the black color from overheat (on 1,2 & 3) compared to the normal brown. Hopefully yours was no where near this.

And you did use new bolts on the rod ends as they are one time stretch when torqued.
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John
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2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
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Last edited by jzeiler; May 25th, 2018 at 8:54 pm.
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post #5 of 13 Old May 25th, 2018, 10:18 pm Thread Starter
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Re: So I had a knock in engine end of last season.

Thanks for the advice, no discoloration.
My son did take it out and did not add oil after I said it was a little low.

I did not use new rode bolts.
I will check after some miles.

The crank was pretty clean, marks but nothing you could feel.
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1994 Suzuki Intruder 1400
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post #6 of 13 Old May 26th, 2018, 9:28 am
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Re: So I had a knock in engine end of last season.

Good you may be OK.

Best way to tell is take it into the rev limiter several times, if she doesn't blow apart you are OK!
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John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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post #7 of 13 Old May 27th, 2018, 12:27 am Thread Starter
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Re: So I had a knock in engine end of last season.

Sealed it up , new oil and filter, no pieces anywhere inside.
Started up easy as usual.
Ran nice.
Did not do full highway run yet but seems to be ok.
I may order big end bolts to retorque with stretch.
I will open it in a few hundred miles, if there is no play increase, I should be ok.

I was able to rev it up and no weird sounds!!!

2000 K1200LT & 86 K75 for fun again

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1992 BMW K75
1994 Suzuki Intruder 1400
1985 Goldwing
1977 Yamaha RD400
1982 Honda MB5
1979 Yamaha XS 650

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post #8 of 13 Old Nov 29th, 2018, 12:55 pm Thread Starter
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Think oil pump died, still finishing motor swap

2000 K1200LT & 86 K75 for fun again

Prev rides
1992 BMW K75
1994 Suzuki Intruder 1400
1985 Goldwing
1977 Yamaha RD400
1982 Honda MB5
1979 Yamaha XS 650

if it ain't fun, don't own it
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post #9 of 13 Old Jun 12th, 2019, 10:21 pm Thread Starter
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Re: So I had a knock in engine end of last season.

Ok motor in and running, put tupperware on the other day.
Abs wag is not stopping, i have not taken any long runs or done comp test.
What could have.made abs error?
No brake lines opened at all, brake light ok batt ok, seeing signal with meter from rear abs sensor, any easy way to test front sensor?

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2000 K1200LT & 86 K75 for fun again

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1992 BMW K75
1994 Suzuki Intruder 1400
1985 Goldwing
1977 Yamaha RD400
1982 Honda MB5
1979 Yamaha XS 650

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post #10 of 13 Old Jun 13th, 2019, 7:58 am
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Re: So I had a knock in engine end of last season.

Since you have a 2000 your is the ABS II which needs to be reset. Low battery can cause a fault as well as several other things have read HERE for more info.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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post #11 of 13 Old Yesterday, 5:40 pm Thread Starter
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Re: So I had a knock in engine end of last season.

Curious if an obd2 plug and good scanner can reset.my abs?

I have the plug on order

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2000 K1200LT & 86 K75 for fun again

Prev rides
1992 BMW K75
1994 Suzuki Intruder 1400
1985 Goldwing
1977 Yamaha RD400
1982 Honda MB5
1979 Yamaha XS 650

if it ain't fun, don't own it
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post #12 of 13 Old Yesterday, 8:06 pm
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Re: So I had a knock in engine end of last season.

Quote:
Originally Posted by jenkinskg View Post
Curious if an obd2 plug and good scanner can reset.my abs?

I have the plug on order

Sent from my SM-N960U using Tapatalk
I don’t think the LT is OBD2 conformant. I think it uses a proprietary interface and thus you need a GS911 or the BMW MoDiTec.

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post #13 of 13 Old Today, 8:21 am
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Re: So I had a knock in engine end of last season.

Everything you need to read and clear was in that linked post I gave you. Albeit you do have to get into the connector to do it it works.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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