Triumphrat

Malibu · 03-04-2007

Anyone make the switch on their Scrambler and feel like she doesn't have the power she had before? I had it done and all the re jetting was done as well. I can't help but think she has less pick-up at higher RPMs. It could be the new sound making me think this, but I don't know. It sounds great, but feels sluggish.

[ This message was edited by: Malibu on 2007-03-09 10:36 ]

Geoff · 03-04-2007

this would seem only possible if it were not re-jetted correctly, or something was put back out of place.
what are the new jets?
G

Geoff · 03-04-2007

this would seem only possible if it were not re-jetted correctly, or something was put back out of place.
what are the new jets?
G

FattRat · 03-04-2007

Dare I suggest it, but your TORs would not completely flatter the advantage you offered your bike by removing the air box. Everything has to work in concert with one another:
You're now getting more air via your new intake system,
with increased air, you may need more fuel via your jetting,
but TORs are not known for being a "free flowing" exhaust, so all this effort you've done to your bike is for naught if the resulting "air pump"/your engine, won't allow the exhaust to exit freely.
I think your TOR's might be a bit constrictive to fully appreciate what you've done so far.

I would suggest that you consider some pipes that have a bit of a bark to 'em.

DrEnglish · 03-04-2007

The TORs are good pipes. it sounds to me like what you need is a bigger main jet. Rule of thumb is that the first 1/4 of the throttle is the pilot, the middle is the needle, and the last 1/4 is the main.

I remember that the jets supplied for the TORs were on the small side. If you switched over to pod filters at the same time, you have enough airflow that they are likely too small to handle the increased airflow.

I'd consider a bigger jet before getting too worried.

FattRat · 03-04-2007

(and louder pipes.... :razz: )

whoa · 03-04-2007

Can you get a dyno? The only other thing I think you could have done was benchmark with a stopwatch before and after. We have guys swearing better performance after removing the air injection. But really, perception is everything right?

I'd think a dyno would help clear things up if you think you have a problem.

Jimbonnie · 03-04-2007

Chances are your main jet is too small (or too large), but we can't help you there unless you tell us what you're using.

Malibu · 03-05-2007

135 main
42 pilots
thruxton needles
I also swapped out my 18 with a 19 front sprocket at the same time. For this bike, I don't think this was a good move. She can't Scramble anymore. I am riding around in 4th gear all of the time now. I liked being able to really balance at slow speeds and cruise in 5th. I plan on switching it back.

[ This message was edited by: Malibu on 2007-03-09 10:37 ]

Olderyoungster · 03-05-2007

I am VERY satisfied with the factory sprocket......
Seems always something people are swapping out, but I'm cool with the factory set up.

With regard to jetting, I'm guessing here..... that sounds about right for your set up. I think I've heard of some folks running as big as a 150 main jet with the air box removed, and maybe I'm wrong about the TORs being restrictive. EVERY bike is different, what the hell.... it's easy to stick some 145's in there and try it out!