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F 800 GT performance

9K views 14 replies 11 participants last post by  GAJ 
#1 ·
Hello Everyone,
very pleased to join your amazing Forum. I just picked up my first BMW bike, first F 800 GT in Egypt and I was wondering if you can provide me with some info regarding the reliability of this bike, overall performance as I just have the feeling that I'm riding a big scooter and not sure about this engine.
can I install a power commander? any suggestions?
thank you all very much
 
#2 ·
Hi yacout and welcome to f800riders.org. These bikes have enough power to get you op to speeds over 200 kph without hesitation and when using in real life situations (so not on a race track) they can keep up with bikes with double the amount of horsepower so that should not be a problem. When coming from a 130+ hp four cylinder some new members reported it felt slow at first until they saw the speedo and found out they were riding much faster as they were thinking.

The engines are made by Rotax who have a great reputation so even though they sound as if they aren't very well build, We now have several members who have reached a very high mileage without real problems or repairs.

A PC can be installed but will only give you a small amount of extra HP & torque because the engine is already tuned very well.

Have fun, but [ride] safe!
 
#4 ·
Thanks Karim for the info, so the engine is not made by BMW? or is it co developed by both companies?
it is true I'm coming from a Ninja Z1000 and I'm beginning to feel so buyers remorse specially that I'm still breaking the bike it and can't rev it.
I already ordered two brothers exhaust and K&N air filter
 
#5 ·
Yes they probably co-developed it, with BMW in the role of the customer, but it is just one of the many engines Rotax produces see Wikipedia: http://en.wikipedia.org/wiki/Rotax.

Once the break in period is over, you will find the engine much more exiting, but it will never feel like a four cylinder because four cylinders have a common problem: they need much revs to get torque which gives a feeling you get a boost when building up revs where the F800 engine has loads of torque from 1500 RPM on (with only a minor 'dip' in the build-up at 5000 revs) so no secondary 'push in the back' at high revs but more ride-ability at low revs.
 
#6 ·
I will chime in here regarding the engine, which is basically the F800ST Rotax engine. I have about 4500 miles on my 2012 ST now, and just did a long day ride a few days ago through the mountains (160 miles of twisties is long for me!), and the engine is so strong and smooth. I really like it. Sometimes I get the itch for the 1000RR, but my ST is already more than adequate for my needs, and I can carry extra clothes and lunch in the panniers for an all-day ride...nice.

Don't worry...you'll end up loving your bike.
 
#7 ·
Met an ex-F800 owner at Calais the other day - he'd installed a Power Commander, K & N filters, a hot exhaust and some other imported US electronic trickery (I forget what) - the whole lot costing over £1000 - and admitted that against a friend's standard bike after a half-mile of acceleration his was only - literally - inches ahead. In other words, it was all a waste of money.
 
#10 ·
Today I spotted the summer edition of BMW magazine in a local book store.
There is a review of the F800GT.
Among other things the article has a dyno report and curve which shows and says that our bike puts out 5 more HP at the rear wheel than the stated BMW HP of 90 at the crank.
95 HP at the rear wheel.
Is this possible???
 
#11 ·
No, that is likely a misprint. Most motorcycles loose 10 to 15% of their power between the crankshaft and the rear wheel. It is also possible that the dyno was not calibrated correctly.
 
#14 ·
My "S" made right around 86 HP on the local dyno when I had the PCIII map made up for Arrow exhaust. Numbers from different dynos can't be directly compared, of course. It's still pretty tame overall, but it makes reasonable power once the tach swings past 5500.
 
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