Engine stampings?

headtube · 10-11-2012, 02:59 PM

Are engine and frame stampings suppose to match? Today I discovered an engine number while sorting out my center stand. It reads as follows...

913063

247/MC3

What are these for? What do they mean? Thanks.

disston · 10-11-2012, 03:15 PM

The first number you show is only six digits. If it was a serial number it would have seven. The number 247 is what the basic engine design for all Airheads. BTW R65s are not 247 engines. You might tell us where these numbers are and also what kind of bike, year and model, you have.

bmweuro · 10-11-2012, 03:22 PM

Quote:

Originally Posted by headtube

Are engine and frame stampings suppose to match? Today I discovered an engine number while sorting out my center stand. It reads as follows...

913063

247/MC3

What are these for? What do they mean? Thanks.

I would guess that your bike is a 91, the engine was the 63rd one made in week 30 of 1991.

headtube · 10-11-2012, 05:48 PM

Quote:

Originally Posted by bmweuro

I would guess that your bike is a 91, the engine was the 63rd one made in week 30 of 1991.

Hmm, a 91? It's suppose to be a 79 R100 RS. The frame serial is correct for that year and has (7) digits. The engine stamping is located on the left case just above the oil pan.

Stagehand · 10-11-2012, 06:21 PM

The 913,063 R100RS made? wouldnt surprise me.

I did find this though:
http://bmbikes.co.uk/chassispages/enginechassis1000.htm

bmwrench · 10-11-2012, 06:57 PM

If the motor is from a 79 it would have a seven digit number behind the dipstick hole. This is turning into an interesting motorcycle. Not as in, "May you live in interesting times", I hope.

headtube · 10-11-2012, 07:35 PM

Quote:

Originally Posted by bmwrench

If the motor is from a 79 it would have a seven digit number behind the dipstick hole. This is turning into an interesting motorcycle. Not as in, "May you live in interesting times", I hope.

There is indeed a seven digit number behind the dipstick that matches the frame number.
Here is a pic of the engine case stamp.

supershaft · 10-11-2012, 09:58 PM

Quote:

Originally Posted by Stagehand

The 913,063 R100RS made? wouldnt surprise me.

I did find this though:
http://bmbikes.co.uk/chassispages/enginechassis1000.htm

BMW just made their millionth motorcylce just a few years back. Of course, that includes all their models ever. I mention it because I don't think a lot of people understand just how low our production numbers are. BMW also just recently cracked the 1% of bikes over 750cc's sold in the US barrier for the first time ever. One percent. Woohoo! And we are their second biggest market!

bmweuro · 10-12-2012, 12:47 AM

Quote:

Originally Posted by headtube

There is indeed a seven digit number behind the dipstick that matches the frame number.
Here is a pic of the engine case stamp.

Is there a BMW logo next to the engine number by the dipstick?

headtube · 10-12-2012, 11:14 AM

Quote:

Originally Posted by bmweuro

Is there a BMW logo next to the engine number by the dipstick?

Affirmative. There is one to the right of the serial #.

DoktorT · 10-12-2012, 11:47 AM

The dipstick no. is the frame no. as originally installled. The no. on the pan perimeter flange is the engine no. No mysteries here.

bmwrench · 10-12-2012, 07:42 PM

FWIW, I believe the 247/MC3 identifies the engines EPA approval.

10-11-2012, 02:59 PM	#1
headtube ^OP Gnarly Adventurer Joined: Sep 2012 Location: Toronto Oddometer: 135	Engine stampings? Are engine and frame stampings suppose to match? Today I discovered an engine number while sorting out my center stand. It reads as follows... 913063 247/MC3 What are these for? What do they mean? Thanks.

10-11-2012, 03:15 PM	#2
disston ShadeTreeExpert Joined: Mar 2011 Location: Silver Spring, Md Oddometer: 4,980	The first number you show is only six digits. If it was a serial number it would have seven. The number 247 is what the basic engine design for all Airheads. BTW R65s are not 247 engines. You might tell us where these numbers are and also what kind of bike, year and model, you have. __________________ Never memorize something you can look up. ---Albert Einstein

10-11-2012, 06:21 PM	#5
Stagehand +/- V TDSPP Joined: Oct 2004 Location: "Poughkeepsie?!?!" Oddometer: 19,849	The 913,063 R100RS made? wouldnt surprise me. I did find this though: http://bmbikes.co.uk/chassispages/enginechassis1000.htm __________________ What to do... What to do... Stagehand screwed with this post 10-11-2012 at 06:26 PM

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10-11-2012, 06:57 PM	#6
bmwrench Beastly Adventurer Joined: Nov 2006 Oddometer: 1,457	If the motor is from a 79 it would have a seven digit number behind the dipstick hole. This is turning into an interesting motorcycle. Not as in, "May you live in interesting times", I hope.

10-12-2012, 11:47 AM	#11
DoktorT BigBrowedNeandereer Joined: Apr 2009 Location: Spokaloo Oddometer: 1,004	The dipstick no. is the frame no. as originally installled. The no. on the pan perimeter flange is the engine no. No mysteries here.

10-12-2012, 07:42 PM	#12
bmwrench Beastly Adventurer Joined: Nov 2006 Oddometer: 1,457	FWIW, I believe the 247/MC3 identifies the engines EPA approval.