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R11/12 motor
Posted: Mon Mar 12, 2018 5:18 am
by C.K
Hello
what is the difference between R11and R12 Motor?
Case,internals?
R11 Serie I - IV
Posted: Mon Mar 12, 2018 11:33 am
by Luigi bmwR68
...they have the chain of distribution instead of the gears (only R11 R16 Serie V have the chain , six screws instead of four on the front motor dekel)
The gearbox is different and I think the attacks are different but I have to watch..
the internal bearings must be looked at in the manual
(In the picrutes R11 Serie II , you canlooks difference from R12)
Ciao!
Thank you !!!
now its
Posted: Mon Mar 12, 2018 12:03 pm
by C.K
Thank you !!!
now its clear
do you know if crankshaft is different?
Is it possible that R11 1934
Posted: Mon Mar 12, 2018 1:08 pm
by C.K
Is it possible that R11 1934 has 6 bolts for the cover?
R11 Serie V
Posted: Tue Mar 13, 2018 6:00 am
by Luigi bmwR68
Yes R11 serie V was made in 1934 , whit large 6 bolts cover like R12
The chain driven cam engines
Posted: Tue Mar 13, 2018 6:21 am
by Ian R11
The chain driven cam engines have 6 holes on the front cover as Luigi says. Do you have 1934 series 5 engine? The crankshaft is different to earlier gear driven cam R11's along with the main bearing types. Deep grove ball bearings (6207M) in the series 5 and i believe roller bearings in the earlier versions.
The cases for series 5 R11 and R12/17 are interchangeable but have a different breather outlet and different cam followers fitted.
Photos of chain driven engine
Posted: Tue Mar 13, 2018 6:45 am
by Ian R11
Photos of chain driven engine case.
Thank you Ian
this is very
Posted: Tue Mar 13, 2018 5:54 pm
by C.K
Thank you Ian
this is very helpful.