k 75 conecting rod berring problem

[ghostridery2k]

i just ad to my stable 87 k 75s.conecting rod bering fail and engine was disasembled. im very suprise the this engine fail with only 22K miles on it.i seen k motors with over 100K and still running fine.any sugestions what to do.replace engine with used one or rebuld my orginal engine.

[lostboy]

Buy a used crank. These engines are a pleasure to work on-you can swap the parts with the engine in the frame. Unless the rod is damaged, you can even leave the head on.

[GregFeeler]

Buy a used crank. These engines are a pleasure to work on-you can swap the parts with the engine in the frame. Unless the rod is damaged, you can even leave the head on.

That's an option, but because they so seldom fail, you can shop around and pickup a used K75 motor for some pretty cheap dollars.

[ghostridery2k]

to late for in frame.im going to restore whole bike.i was not sure if used engine is good option,two conecting rods are demaged(not bent only litle blue from heat). cylinder sleves are perfect,berlly any wear.frame was removed from engine so right now on my lift i got engine block trans rear swing arm and rear wheel.for some reason i can't post any picks.

[GregFeeler]

to late for in frame.im going to restore whole bike.i was not sure if used engine is good option,two conecting rods are demaged(not bent only litle blue from heat). cylinder sleves are perfect,berlly any wear.frame was removed from engine so right now on my lift i got engine block trans rear swing arm and rear wheel.for some reason i can't post any picks.

Sounds like a new engine is how I would proceed. Go here to test posting pictures. One tip is to NOT preview you message once you have uploaded you picture. Do that last and then post your message.

http://www.bmwmoa.org/forum/showthread.php?t=2021

[deilenberger]

K75 engines are available SO cheap that it's not worth opening them up if something big fails (and that's the first time I've heard of bearing problems on one - I'd suspect oil pressure failure of some type..)

A friend who owns an independent BMW shop is disassembling a K75S - relatively late model, good engine. I'm sure the engine will be a bargain if you're within shipping distance of NJ, USA..

Ping me (PM) if you want the contact info.

[PGlaves]

If connecting rods are blue the engine got very hot when it shouldn't have. So, I would suspect either it had a cooling system problem or it was somehow run without sufficient oil pressure. Maybe only partial as in run with a clogged oil passage. So unless you know exactly why the damage happened it is anybody's guess how widespread the damage might really be.

I would personally look for a different engine. The possibilities for minor damage all over the place leading to a lifetime of continuing problems is just too high with that engine in my opinion.

[osbornk]

Beemerboneyard has your exact engine listed with 53,000 miles for $215.

http://www.beemerboneyard.com/1100146125653kp.html

[ghostridery2k]

:scratch i will ride again


http://i215.photobucket.com/albums/cc118/ghostridery2k/k75025.jpg
-------------------------------------------
84 CZ 350 (where all this started)
87 K75s (under construction)
05 Kawasaki Z750s
03 Yamaha R1

[GregFeeler]

Amazing, that looks a lot like the pictures BMW used in promotion of the (then) new K-bikes showing the Kompact Drive System.

[ghostridery2k]

im going to stop by local bmw deeler for some info tomorow,i got my parts list ready.finally i find out why this engine fail.engine run out of oil when bike was laid down and not shut off in time.
>>>ride safe<<<
--------------------------------------------
84 CZ 350 (where all this started)
87 K75s (under construction)
05 Kawasaki Z750s
03 Yamaha R1

[GregFeeler]

im going to stop by local bmw deeler for some info tomorow,i got my parts list ready.finally i find out why this engine fail.engine run out of oil when bike was laid down and not shut off in time.

Oops! That would do it.

[ghostridery2k]

my k 75 after few hours of wrenching,still many to go.
http://i215.photobucket.com/albums/cc118/ghostridery2k/k75noengine002.jpg
:bikes :german

[SweetT]

I have a K75 engine in my garage that came off a running bike that I will just GIVE you if you pay S&H!

[ghostridery2k]

I have a K75 engine in my garage that came off a running bike that I will just GIVE you if you pay S&H!

just let me know how much for shipping and check is on the way,i may have other option for pick up.


Ride safe,martin

[ghostridery2k]

Just order used engine for my litle K. I can't wait. After i got it runing body work will come off for some new paint and new question-----> what color?????
Orginal black?,but i like siver or :scratch ,:banghead.I can have any color i want,i just spend 1 hour going thru color chips books and no luck.I think i need help.:banghead

[jdiaz]

Just order used engine for my litle K. I can't wait. After i got it runing body work will come off for some new paint and new question-----> what color????? Orginal black?,but i like siver or :scratch ,:banghead.I can have any color i want,i just spend 1 hour going thru color chips books and no luck.I think i need help.:banghead

To pick the current color of my K bike, I just wandered the lot at Knauz BMW automobiles until I found the one I wanted. The cars have some pretty neat choices available.

[osbornk]

Just order used engine for my litle K. I can't wait. After i got it runing body work will come off for some new paint and new question-----> what color?????
Orginal black?,but i like siver or :scratch ,:banghead.I can have any color i want,i just spend 1 hour going thru color chips books and no luck.I think i need help.:banghead

I think BMWs are best in traditional black. I finally found a black one on my 3rd try. Then I went really strange and added a brown one to my garage.

[mrich12000]

Boy that shure looks ez to do a in frame :wave


Michael
126360
Loonie-Tic
K75RT

[ghostridery2k]

K bikes are so simple,and i like it. I can have this bike broke down to pieces in 1 to 2 hours.I will get this one going,make sure evrything works how like it newbrakes,battery,tires,fluids and then frame,wheels and sheet metal will get new paint.

[ghostridery2k]

my k 75 with engine in
http://i215.photobucket.com/albums/cc118/ghostridery2k/bmwwithengine006.jpg

[mrich12000]

nice bike:usa