Author Topic: camshaft  (Read 954 times)

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Offline ARIS

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camshaft
on: July 30, 2021, 09:57:46 AM
hi all...i am from greece an i have one question......i have bmw s1000r 2015 ....i can use camshaft from s1000rr 2010?  inlet-exhaust or only inlet....

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Offline ARIS

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Re: camshaft
Reply #1 on: August 01, 2021, 01:09:54 AM
??????????????

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Offline Toolman

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Re: camshaft
Reply #2 on: August 02, 2021, 04:39:31 PM
Try Facebook, BMW S1000r Owners Group, guy on there fitted cams or head, not sure which.

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Offline beech

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Re: camshaft
Reply #3 on: September 22, 2021, 10:05:01 PM
So, did you change your camshaft out?

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Offline rogracer

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Re: camshaft
Reply #4 on: October 07, 2021, 11:10:22 PM
I'm gonna say this is a bad idea.  The best you can hope for is a "shift of the torque curve to the right", which to exploit, would require a higher red-line..maybe a couple of thousand rpm higher.  Since this is way past the stock rev-limit it would require a complete re-work of the engine control software.  Without that, you will just loose a bunch of mid-range torque and get no additional horsepower.  And if you do succeed with a re-tune that allows you to rev-higher you will likely over-stress the stock valvetrain (note the RR has titanium valves and different springs).  Assuming you convert those components as well as getting a compatible tune, you will have succeeded in getting more high-end (>11000 rpm) power but will have thrown away a bunch of low and mid-range torque.  That is the range of speeds a Naked Bike is primarily used....so it would be a very poor trade off for a naked. If high rpm power is important to you and don't care about mid-range, you should be on a fully-faired superbike like the RR because your talking about high-speeds (>130 mph) were a naked is kinda out of its element.  IMO, the stock R motor is about in a perfect tune for a naked.

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Offline beech

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Re: camshaft
Reply #5 on: October 08, 2021, 04:22:25 AM
Makes a whole lot of sense. If you want RR preformance, buy one.

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Offline rogracer

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Re: camshaft
Reply #6 on: October 08, 2021, 03:46:32 PM
Not to offend anyone, but when many people dream of "more power" they are envisioning a upward translation of the torque curve...giving more power/torque across the rev band.  That typically requires more displacement.  Something like a cam will not do that...it's better to think of it as a way to adjust the torque peak either higher or lower in the rev band...it generally won't increase peak torque at all.

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Offline Spartacus

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Re: camshaft
Reply #7 on: October 09, 2021, 09:10:45 AM
*Originally Posted by beech [+]
Makes a whole lot of sense. If you want RR preformance, buy one.


 :0461:  I've never quite understood these guys who buy a bike and instantly want to upgrade everything and spend vast amounts of money doing it.

Why don't they just get the bike with all the bells and whistles they require in the first place.

In this instance, if you're not happy with the R, then as beech says buy the double R, or an equivalent like the 1100 Factory, Streetfighter, 1290 Superduke etc etc.

 



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