More Power

[harvdog42]

Hello,

For some reason I just can't leave well enough alone...especially when it comes to power. I could go out and buy a brand new Hyabusa but that wouldn't be any fun. I've always liked the idea of a "sleeper". I guess that is why I like the XS1100 so much.

Has anybody ever tried doing head work to the XS1100 to get higher performance? Like oversize valves for example. How about this...finding a four valve head from some other motor that would fit the XS.

Jim

[roddio]

More Power

Have you tried?
- Stage 1 Dynojet kit
- Jardine 4 into one exhaust (get the megaphone, it sounds way cooler than the cannister)
- K&N air cleaners (removing stock air box)
- Accel coils & wires
- Premium instead of Regular gasoline
You'd be amazed what just these simple changes will do to improve performance. These bikes kick butt and are sooo easy to work on. I buy these babies out of people's garages and back yards for 3-6 hundred bucks, which is next to nothing! Sure, they're pretty ugly when I get 'em, but a little soap, a little engine cleaner, sometimes some flat black paint, & I've got a real beauty. I swap out the handlebars & the fusebox, strip them down to the bare essentials, (without the fairings, sissy bars, center stands & travel bags.) Then I change the oil in the engine & fork tubes, lube the middle gear & final drive, clean the carbs (twice,) put Bridgestones and a fork brace on 'em, and ride 'em hard until 2nd gear goes out. Then I put 'em in MY garage until that day when I get the cash for the 2nd gear fix, about a grand, which I never seem to come up with. So you see that for less than 2 grand you can have a real road burner, and for three gees you can have one that is pretty much bulletproof.
When I finally tear one apart, I plan to have the heads flowed, and build a custom exhaust, but I don't want to goof with it too much, as Yamaha got so much right on these bikes. I know some guys like to put the Wiseco 1196 kits on 'em, I've seen one with APE heads and I've even heard of a tubo-kitted XS11, so if you want to go stupid fast with just bolt-on power for these 1100cc mills, it can be done.

[beechfront]

don't park it just because of 2nd gear. you can still buy the gears you need from yamaha for under $200. takes some time but you can do it yourself.

[Dennyz]

second gear

if catch right when it starts, all it take is some handy dremel work.

[Geezer]

I've been toying with the idea of different carbs but nothing else I've run across has the same spacing. I like to wring out more power too but I'm to cheap to spend a fortune doing it.

There was a kit for the old XS750 that used 3 individual carbs rather than a bank of them. This worked but they were a witch to keep tuned.

I'm pretty happy with the power band of my XS11 but I think making it breath a little freer would juice it up a bit.


Geezer

[Dennyz]

I have a set of Mikuni smooth bores that fit right up. Talk about instant throttle responce.

[harvdog42]

DZ,

Talk to us about the Mikuni smooth bores you are using. Are they after market or off another bike?

Jim

[Dennyz]

I am not using them anymore. It tried them out and took them off. They require a push-pull throttle, so the stock XS throttle can not be used, requiring a seperate kill switch and started button.

I did not care for the sharp throttle response when cruising. With stock carbs, if the driver grabs a hand full of throttle, the motor smoothly accerates. With the smooth bores, the motor comes on all at once. From 2K rpm to 5K rpm they are scary. They require a lot more throttle disipline from the driver. They are awsome for full on accereration.

I don't think they came stock on anything. They are a Mikuni performance setup. I bought them from a guy running an XS motor in a midget racer.

I sold them to a guy a couple of years ago, but he never came up with all the $$, so I got them back. They have been sitting on the shelf ever since.

[Dennyz]

Mikuni Smooth Bore Carb Set

[Geezer]

Not that I can afford them but, how much do you want for them and is there any other XS11 item you need in trade?

Geezer

Originally posted by Dennyz
I am not using them anymore. It tried them out and took them off. They require a push-pull throttle, so the stock XS throttle can not be used, requiring a seperate kill switch and started button.

I did not care for the sharp throttle response when cruising. With stock carbs, if the driver grabs a hand full of throttle, the motor smoothly accerates. With the smooth bores, the motor comes on all at once. From 2K rpm to 5K rpm they are scary. They require a lot more throttle disipline from the driver. They are awsome for full on accereration.

I don't think they came stock on anything. They are a Mikuni performance setup. I bought them from a guy running an XS motor in a midget racer.

I sold them to a guy a couple of years ago, but he never came up with all the $$, so I got them back. They have been sitting on the shelf ever since.

[fusionking]

Would you like to sell them ? I would be very interested in buying them if you would. How much are they worth to you? I wonder if we can still get them. Garry

[Dennyz]

I originally sold them for $250, but the guy defaulted. I don't know what shape they are in now (jetting and setup), as he had them for about 6 months. Was thinking of putting them up on Ebay.

[roddio]

Smooth bores

Are there part numbers on those Mikuni smoothbores so that those among us with more money than sense can see if they're still available? Some people don't mind a separate kill switch and start button so much, you know.

[Geezer]

Let me know how much and I'll see what I can do to come up with the cash.

Geezer

Originally posted by Dennyz
I originally sold them for $250, but the guy defaulted. I don't know what shape they are in now (jetting and setup), as he had them for about 6 months. Was thinking of putting them up on Ebay.