The All New 2013 LIQUID COOLED R1200GS threadfest

[Deans BMW]

Originally Posted by JimVonBaden

I don't get it???

How many R1100/1150/1200 bikes actually require any sort of major engine work, let alone rebuilding/reboring? IMHO it is a non-issue.

Jim

Absolutely.

[Anorak]

Originally Posted by ragtoplvr

When the crank is 90 degrees from TDC there will be pretty good access to the rod nuts. Non-issue. If you take care of the bike, I would expect well over 200 K. Hopefully the cam chain guides can be replaced without major disassembly, that to me would be a bigger issue, they can and do fail sooner than the cylinders wear out.

I would count on there being pretty good supply of low mileage engines from bikes that get totaled.

Rod

How do you get the piston out to access the rod?

[Marki_GSA]

Take the sump/oil pan off.

[tallguy-09]

"DasMatti"
Undoubtedly we need some help getting this thread going again, how was your test ride?

[marchyman]

Originally Posted by Anorak

How do you get the piston out to access the rod?

I didn't think about that. Or, to be more accurate, I didn't think.

How often do you need access to the piston on a modern boxer? I'm aware of one where the piston disintegrated at 180K miles. The solution to that problem was a salvage engine that was only 25K miles old. Much cheaper than trying to fix the old engine.

Originally Posted by Marki_GSA

Take the sump/oil pan off.

What oil pan?

[hillbillypolack]

I seem to recall a number of posts regarding one cylinder vibrating and ultimately failing on the GS12. Often it was the right side. Hate to see some similar issue on this design.

I'll say it again-makes me wonder if what we're seeing isn't a running development engine being put through its paces for research.

[tallguy-09]

Originally Posted by hillbillypolack

I seem to recall a number of posts regarding one cylinder vibrating and ultimately failing on the GS12. Often it was the right side. Hate to see some similar issue on this design.

I'll say it again-makes me wonder if what we're seeing isn't a running development engine being put through its paces for research.

Looks like a (or two) running motorcycle(s) to me and I'm thinking all will be good
First thing I'll remove: Rear Footpegs

[rdcyclist]

Originally Posted by Anorak

How do you get the piston out to access the rod?

In the case of the integral case/cylinders, you split the cases and the crank "falls out". Similar to rebuilding a Japanese four, the bottom case is split from the top and the rod bigends are exposed for disassembly.

The truth of the matter is, almost nobody rebuilds motorcycle engines anymore. There are plenty of wrecking yard engines available with low miles and in the case of a worn out engine, the rest of the bike is usually done by then anyway. How much is a ten year old bike with 250k worth?

[Ricardo Kuhn]

Originally Posted by rdcyclist

In the case of the integral case/cylinders, you split the cases and the crank "falls out". Similar to rebuilding a Japanese four, the bottom case is split from the top and the rod bigends are exposed for disassembly.

The truth of the matter is, almost nobody rebuilds motorcycle engines anymore. There are plenty of wrecking yard engines available with low miles and in the case of a worn out engine, the rest of the bike is usually done by then anyway. How much is a ten year old bike with 250k worth?

You are right about everything, my fear will be with the "Chain tensioner" plastic guides that tend to disintegrate from time to time.

Ps: If the new engine does not have the pesky plastic tensioner sliders, me bad and more power to them

[Anorak]

Originally Posted by rdcyclist

In the case of the integral case/cylinders, you split the cases and the crank "falls out". Similar to rebuilding a Japanese four, the bottom case is split from the top and the rod bigends are exposed for disassembly.

The truth of the matter is, almost nobody rebuilds motorcycle engines anymore. There are plenty of wrecking yard engines available with low miles and in the case of a worn out engine, the rest of the bike is usually done by then anyway. How much is a ten year old bike with 250k worth?

It was a rhetorical question raised for the purpose of intellectual exercise.

[rdcyclist]

Originally Posted by Anorak

It was a rhetorical question raised for the purpose of intellectual exercise.

Lord knows I need the exercise...

[Marki_GSA]

Originally Posted by marchyman

I didn't think about that. Or, to be more accurate, I didn't think.

How often do you need access to the piston on a modern boxer? I'm aware of one where the piston disintegrated at 180K miles. The solution to that problem was a salvage engine that was only 25K miles old. Much cheaper than trying to fix the old engine.



What oil pan?

There has to be some access otherwise you wouldn't be a able to build the engine in the first place. Of course they could be 3D printing them. ;)

[JimVonBaden]

Originally Posted by Marki_GSA

There has to be some access otherwise you wouldn't be a able to build the engine in the first place. Of course they could be 3D printing them. ;)

Don't bring logic into this!

Seriously, they simply compress the rings as they assemble the block halves!

Jim

[Beemerlover]

Probably off-subject, but do those guys in the pics REALLY need those knee sliders with boxes mounted on those bikes?

[Beemerlover]

Originally Posted by JimVonBaden

Don't bring logic into this!

Seriously, they simply compress the rings as they assemble the block halves!

Jim

Just like assembling a Goldwing engine, right Jim?