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BMW R1800
#2
I didn't realize it was dual plugged and had two cams, one for each cylinder.
With the low compression I'm surprised it needs 91 to 93 AKI.
The R1200 takes 89 AKI and the R1250 takes 90 AKI.

Quote:As is usual in large-bore engines with a substantial compression ratio (R 1800’s is 9.6:1), mandated fuel is 95–98 RON (Research Octane Number).
Lee
Iowa, USA
2022 R1250RS White Sport

Past BMWs: 2016 R1200RS x 2,  2011 K1300S x 2,  2003 K1200RS x 2,  1991 K75S x 2,  1987 K75T x 2, 1984 R100RT
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Messages In This Thread
BMW R1800 - by darrell - 12-09-2019, 10:45 AM
RE: BMW R1800 - by Lee - 12-09-2019, 01:28 PM
RE: BMW R1800 - by Grumpy Goat - 12-09-2019, 04:10 PM
RE: BMW R1800 - by Lee - 12-10-2019, 09:28 AM
RE: BMW R1800 - by Ray - 12-11-2019, 10:33 AM
RE: BMW R1800 - by Grumpy Goat - 12-11-2019, 12:20 PM
RE: BMW R1800 - by Olgry1 - 12-10-2019, 03:43 PM
RE: BMW R1800 - by Grumpy Goat - 12-10-2019, 06:48 PM
RE: BMW R1800 - by darrell - 12-11-2019, 12:27 PM
RE: BMW R1800 - by Grumpy Goat - 12-11-2019, 12:35 PM
RE: BMW R1800 - by Ray - 12-11-2019, 05:37 PM
RE: BMW R1800 - by Grumpy Goat - 12-11-2019, 06:43 PM
RE: BMW R1800 - by Lee - 12-11-2019, 07:42 PM
RE: BMW R1800 - by Ray - 12-14-2019, 03:05 PM
RE: BMW R1800 - by Grumpy Goat - 12-15-2019, 08:15 AM
RE: BMW R1800 - by darrell - 12-14-2019, 03:18 PM
RE: BMW R1800 - by Ray - 12-14-2019, 03:26 PM
RE: BMW R1800 - by MrVvrroomm - 12-14-2019, 05:39 PM
RE: BMW R1800 - by Ray - 12-15-2019, 06:55 AM
RE: BMW R1800 - by Lee - 12-15-2019, 09:38 AM
RE: BMW R1800 - by Lee - 12-15-2019, 09:56 AM
RE: BMW R1800 - by darrell - 12-15-2019, 10:12 AM
RE: BMW R1800 - by Lee - 12-15-2019, 07:27 PM
RE: BMW R1800 - by Grumpy Goat - 12-16-2019, 07:12 AM
RE: BMW R1800 - by Lee - 12-16-2019, 08:46 AM
RE: BMW R1800 - by mspratz - 12-15-2019, 03:56 PM
RE: BMW R1800 - by Lee - 12-15-2019, 07:34 PM
RE: BMW R1800 - by Grumpy Goat - 12-16-2019, 07:09 AM
BMW R1800 - by Grumpy Goat - 12-16-2019, 09:44 AM
RE: BMW R1800 - by Grumpy Goat - 08-16-2022, 09:19 AM
RE: BMW R1800 - by Ray - 08-16-2022, 09:26 AM
RE: BMW R1800 - by Grumpy Goat - 08-16-2022, 11:03 AM
RE: BMW R1800 - by Ray - 08-16-2022, 01:30 PM
RE: BMW R1800 - by Grumpy Goat - 08-16-2022, 03:56 PM
RE: BMW R1800 - by darrell - 08-16-2022, 03:53 PM
RE: BMW R1800 - by Ray - 08-16-2022, 04:00 PM
RE: BMW R1800 - by 36654 - 08-18-2022, 12:49 PM
RE: BMW R1800 - by Ray - 08-18-2022, 01:28 PM
RE: BMW R1800 - by Pyrrho - 08-18-2022, 02:29 PM
RE: BMW R1800 - by 36654 - 08-18-2022, 06:52 PM
RE: BMW R1800 - by Ray - 08-19-2022, 08:01 AM
RE: BMW R1800 - by Pyrrho - 08-19-2022, 08:44 AM
RE: BMW R1800 - by Grumpy Goat - 08-17-2022, 07:10 AM
RE: BMW R1800 - by 36654 - 08-19-2022, 01:12 PM
RE: BMW R1800 - by Ray - 05-23-2023, 02:06 PM
RE: BMW R1800 - by Grumpy Goat - 05-23-2023, 04:17 PM

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