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| Fast, Reliable But Not So Cheap - 1380 BMW K1200 EFI https://www.ausmini.com/forums/viewtopic.php?f=5&t=96193 |
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| Author: | simon k [ Wed Feb 16, 2022 8:46 pm ] |
| Post subject: | Re: Fast, Reliable But Not So Cheap - 1380 BMW K1200 EFI |
wow - that's a LOT of power - that's at the wheels right, not a "umm maybe 30%" type flywheel guesstimate? |
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| Author: | jpodge [ Thu Feb 17, 2022 6:00 am ] |
| Post subject: | Re: Fast, Reliable But Not So Cheap - 1380 BMW K1200 EFI |
simon k wrote: wow - that's a LOT of power - that's at the wheels right, not a "umm maybe 30%" type flywheel guesstimate? That's right - power at the rubber! Overtakes require a little less planning these days |
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| Author: | awdmoke [ Fri Feb 18, 2022 1:32 pm ] |
| Post subject: | Re: Fast, Reliable But Not So Cheap - 1380 BMW K1200 EFI |
Well done with that figure, and it's definitely not peaked. |
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| Author: | fffffred [ Fri Feb 25, 2022 7:00 pm ] |
| Post subject: | Re: Fast, Reliable But Not So Cheap - 1380 BMW K1200 EFI |
Awesome result, well done |
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| Author: | zulu_warrior1976 [ Sat Mar 05, 2022 5:42 pm ] |
| Post subject: | Re: Fast, Reliable But Not So Cheap - 1380 BMW K1200 EFI |
Absolutely loved reading this thread. If you ever return to Adelaide let me know. I’d love to see it in the flesh. |
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| Author: | jpodge [ Fri Mar 10, 2023 1:21 pm ] |
| Post subject: | Re: Fast, Reliable But Not So Cheap - 1380 BMW K1200 EFI |
Quick update on how the twin cam is going a year later and with over 5000km on the clock. It remains running as well as it did the day it rolled off the dyno with plenty of smiles every time it gets driven, and even more so on the colder days - there's a noticeable torque difference. As for maintenance, the only thing I've had to tend to was an oil leak coming from the cam cover which was a result of a few of the cam cover bolts becoming stripped. These bolts thread into the cam caps so all it took to fix was a solid helicoil and we were back in business. As my confidence is building, I am contemplating moving the RPM limiter up from 6750RPM to 7500RPM as I have hit it a few times where it felt it was a tad early. Other than that there is nothing that I've had to do to keep this engine running well. It starts first time every time and I am very comfortable with its reliability. Also, I feel very lucky to have partnered with Classic Mini DIY in offering the map from this engine which is available from his website linked below. Relative to the map my engine is running at the moment, this base map has had the base fuel increase by 5% and the ignition timing reduced by 5% above 1500RPM so anyone with a BMW K1200/k1100 mini engine would be able to use this map as a beyond-good starting point until it is able to get to a dyno. The specs of this engine Head: BMW K1200 with RS Cams Cam settings: Intake: Cyl 4 @ 1.5mm lift when Cyl 1 TDC Exhaust: Cyl 4 @ 1.8mm lift when Cyl 1 TDC Block: A series bored out to 1380cc Compression Ratio: 11.0:1 Tune Type: Throttle Position vs RPM Ignition Type: Coil on Plug Trigger: On crank – Wasted Spark Injection: Multi Point Throttle Bodies: Quad Throttle Bodies with one TPS pickup Intake: Naturally Aspirated ECU: Haltech Elite 550 https://store.classicminidiy.com/produc ... i-base-map |
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