More power

[Gromit]

Please tell us a bit more about the bike - is it standard? What doesn't he like about the low-rpm performance? Is it fuelling badly, or just lacking oomph etc?

These motors have a fair bit of torque low-down, certainly more than a lot of IL4's although it's never going to be the sort of engine to rip one's arms off.

The relatively simple stuff would be to lose the cat (if fitted) and replace with a Laser or Remus mid-section. Perhaps then fit a K1200RS fuel regulator. Also, I've round making absolutely sure the throttle bodies are balanced perfectly will help low-down performance too.

He could of course fit a Power Commander but it starts to get expensive, especially with dyno time. Probably worth it though as a PCIII-equipped bike I rode a few years back fuelled beautifully at low revs.

[tanneman]

See this thread for some advice

http://www.boxertrix.com/phpBB2/viewtopic.php?t=15806

but it would help if you describe the symptoms or what he actually wants to achieve.

[f90x]

A friend who has a 2000 1100S is not happy with the performance at low revs.Is there any way of increasing engine output without replacing mechanical bits?

yes, just buy mine

[el-nicko]

Hi Grommit, You mention the K1200RS fuel regulator as a way of improving 11S performance. Can I ask, what's it do? Where's it fit? Do you know the motorworks part number?

[nab 301]

Assuming that there's nothing amiss with the bike you could try these
http://www.boxertrix.com/phpBB2/viewtop ... 54&start=0

Edit , didn't see the "without replacing mechanical bits"

[Gromit]

Hi Grommit, You mention the K1200RS fuel regulator as a way of improving 11S performance. Can I ask, what's it do? Where's it fit? Do you know the motorworks part number?

Nick - the K's fuel pressure reg just fits the fuel line under the tank, replacing the 11S's original one (I did one years ago and my memory's a tad foggy sorry!).

What does it do? Lets more fuel into the engine - useful if you're running aftermarket pipe/induct etc where you could get a lean condition.

It's a bit crude vs a PCIII or some such but it does make a bit of a difference. Someone who's done the job more recently will I hope be along to explain more eloquently than me.

[el-nicko]

Ah, so it's not IN the tank. OK, cheers m8. UPDATE! I just found it. Number 2 in the dia. I'll order one up. £44.80 INC VAT frm MOTORWORKS.

[Gromit]

Ah, so it's not IN the tank. OK, cheers m8.

Oh no - it's quite an easy job IIRC, just needs a fair few bits un-bolting that's all. If it was inside the tank I'd have left well alone.

[Hayden]

el-nicko

You could go the accelerator module route, from what I gather it will give you more juice when you need it, rather than just dumping more fuel in all the time like an uprated regulator.....at least thats how I read it....probably wrong?..

[Hayden]

A friend who has a 2000 1100S is not happy with the performance at low revs.Is there any way of increasing engine output without replacing mechanical bits?

First thing to do, get it serviced inc air filtre, balance the throttle bodies and check the valve clearances, then take it from there, additional horse power is responsible for very empty pockets, but things can be done to help it breath and `spin up` quicker before it gets too serious..

[tanneman]

Ah, so it's not IN the tank. OK, cheers m8. UPDATE! I just found it. Number 2 in the dia. I'll order one up. £44.80 INC VAT frm MOTORWORKS.

Is it this one you are ordering part no FUA65150b from the flat four K1200

http://www.motorworks.co.uk/vlive/Shop/ ... 5_45_FA_50

[el-nicko]

Huh, I dunno. That lower-case 'b' on the end is a worry .Check this page out. T here's two illustrations with the same part number (FUA65150 )but for dif models but one sez 3.5 bar and that it fits most models
http://www.motorworks.co.uk/vlive/Shop/ ... &x=10&y=14

[f90x]

as i understand it i believe that one needs the pc111 in conjunction with the fpr otherwise it throws fuel in by the bucket load.

[tanneman]

Sorry typo

[el-nicko]

Sorry typo