Somebody ground down the original numbers on my R66, but they have been recovered through the miracle of modern chemistry. I would like to gently tap in the correct numbers. Does any one out there know the correct number punch size? Or sizes?
...maybe you should just "leave well enough alone"? That's very rare and desirable BMW, and your not likely to be able to restamp the frame well enough for it NOT to appear to be a restamp? If you can really prove that it's the frame original to the motor, so what if the frame numbers have been obliterated? FWIW, the font used on the R66 frame serial numbers will be the same as any other 1938-41 BMW frame. I'd suspect that the roundel is the early larger size?...I'd wonder if your cylinders and heads serial numbers match the motor number?...
The head numbers, if present, should be visible without disassembly. You should see them stamped into the visible surface just inward of the valve cover mating surface.
this are the numbers of my R66
Since our two R66 are the first models, even your no oil tubes?
I had to put on my provisional ... there was no proper housing reinforced with the crankcase. You could see that they had tried to copy what then appeared on later models.
Visto che le nostre due R66 sono dei primi modelli, anche la tua non ha i tubi dell'olio?
Sulla mia ne avevano messi di provvisori... non c'era l'apposito alloggiamento rinforzato sul carter motore. Si vedeva che avevano cercato di copiare cosa comparso poi sui successivi modelli.
yes,my R66 didn't have the oil tubes,it's correct.
We can,i think,divide the production of R66 in 2 "series":
-the first without oil tubes and frame reinforcement
-the second with oil tubes and frame reinforcement
Does anyone have some pictures of an original R-66 ie. not restored? Ive got a fairly original one that I'm trying to figure a few points out about.
I don't know if many of you folks follow "motoclub.de forum", but someone on that website just found a very original
1939 R61 in Netherlands, and has posted many good photos of the bike, rust/dirt/weird modifications and all! That's basically the same motorcycle as an R66 save for the motor. OTOH, Somer might just consider selling his "non-correct" R66 to me, and forgetting about all the hassel of getting it presentable in mixed company? IMO, other than for an R5 or R17, that R66 is the most desirable BMW ever made!
i have pictures of one R66 original found in Novegro Market (MI) some years ago,
this bike was repainted green military but the seller clean easly this paint and find the original black paint under!
this night i post it.
Otherwise you can find very good and original pictures in BMW Mobile Tradition Archive.
My R-66 appears to be an early one too. It had original vin#s and the same numbers stamped above the cylinders.
I think that my engine probably met your engine a long time ago in Germany
Check my numbers !
Best Regards, Lars
Yes is fantastic!
Only 2 numbers!
WOW, they are sisters!