R1100 engine differences ?

[turnipbmw]

Anyone point me in the direction of somewhere that lists the engine differences of all R1100 models ?

Am suprised there are any - why would you do that

 

[Steptoe]

Early 1100GS engines have bigger valves.

 

[nick.ct]

R1100S 98HP, 97Nm
R1100R/GS 80HP, 97Nm

Be interested to know how many of the early R1100 had the big valves and which models

 

[turnipbmw]

I only ask because Motoworks say they need chassis number before they will sell you a second hand engine.
Apparently there are many different types

I would have assumed that any R1100 engine would fit any other R1100 even an 'S'

I stripped an 'S' engine and it seemed identical to an 'R' engine I had in bits.

here is an interesting engine rebuild thread I found today

 

[Pekkavee]

Example
BMW R1100R engine is the same as these.
Same engine
If you have an R1100R these fit for you. No other.

Have a look in BMW Max Fiche to find your engine.
Search with a part number which is the same as you need

Pekka

 

[uncle dick]

Compression ratio, valve sizes, valve timing, con-rod material, plus all the external stuff like ecu's, injectors, throttle bodies, exhausts etc etc.

Use the links section on here to find various useful publications

Quite a bit in my Clymer manual as well - not sure if there are EU/US variations on the internals. You can find all this on RealOEM.

When you've done that, a handy reference table as a 'sticky' would be just great

Dick