Modding my 94 XR650L


6 replies to this topic
  • richgiffen

Posted September 09, 2006 - 09:11 PM

#1

I will be modding my XRL this week and need some help. I will be putting on a full system exhaust, and rejetting the carb. My question is what to jet the carb to? I live at sea level so after cleaning the carb out completly, and with my new exhaust system, what specs should the carb be jetted to???

  • justicedone

Posted September 10, 2006 - 07:50 AM

#2

55/158 jetting should be perfect drill the slide and shim the needle as Daves mods tell ya, and a Uni filter and remove the snorkel. Do wheelies and enjoy the new power, then re-gear to 14/48 and really get the most of her.

have fun

  • GIANTac1

Posted September 10, 2006 - 10:30 AM

#3

I know you are looking for some engine mods but you need to get some new bars, pro taper cr high bend, one of the best mods I done to my bike by far. Oh, and dont forget the WB Bros exhaust, BRAAAAPPPPP! :thumbsup:

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  • richgiffen

Posted September 10, 2006 - 09:02 PM

#4

put bars on a while back. I am actually refering to the jetting situation. I am going to put a full exhaust system on, and rejet the carb. As far as gearing goes....What is the stock gear ratio? I do 85-95% of my riding on the street. Being that it is a 650 it has lots of power, so I want to know what is a good gear ratio for street and highway commutes, with the "occasional" dirt ride.

  • HappyCurmudgeon

Posted September 11, 2006 - 04:13 AM

#5

According to the spreadsheet i have and the info in the manuals, with the stock gearing of 15/45, the final reduction is 3.000.

15/45 gives 3.000 STOCK
14/45 gives 3.214 (works better than stock for me to reduce the skip between 1st & second. I ran this for a while with street tires and it was pretty good, but i am not a speed demon so the 85-90mph crowd may well disagree)
14/47 gives 3.357 (Seems to be quite popular for a bit of mixed duty, but i havent tried it yet)
14/48 gives 3.429 (Greatly reduces the 1-2 skip, Seems the most popular for offroad, lowers top speed, mine gets buzzy around 60-65)

15/47 gives 3.133 (Have not tried this.)
15/48 gives 3.200 (Have not tried this, but it has nearly the same ratio as the 14/45 i tried earlier.)

From my understanding, basically, the bigger the ratio, the more low end, less high end you will have; & vise-versa. I am currently running 14/48 & I run no more than 60mph anyhow, and i like the low end for what i do.

I am about 60/40 street/dirt, I never get on the thruway, only occasionally hit a road that is posted over 45mph as i am on the fringes of suburbia. I live only about 4 miles from work & commute every day on side roads & trails, so long distance high speed thruway isnt an issue for me.

  • richgiffen

Posted September 11, 2006 - 08:17 PM

#6

Thanks for your response. I feel more eduacted on the subject now. I do however feel as though I may be one of those speed demons you were referring to, and I DO ride my bike on the freeway reguarly. I am looking for a bike the is great for that, and while keeping some low/mid end for when I do ride on the side streets and dirt. I ride 95% on the street, so I should accomdate for that. Has anyone regeared they're bike to accomodate for freeway riding while still being happy off road? What gear ratios are you running?

  • goblin127

Posted September 12, 2006 - 06:59 AM

#7

The only choise you have is stock 15/45 for the high way. Or try the 14/45 cheaper to just by the counter sprkt. It will be a bit buzzy over 60/65 though.





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