XT550 + 660Raptor carb?
 

I have read a few posts on here after searching around that mension this would work. Would it realy work to put a 660raptor carb on a 83' XT550? And would it give you any serious power gains/ Better response?

Thanks!

- FL250Modder

Just re-jetting your standard carb and a decent pipe would do wonders for a XT550.

Raptors aren't all they are made out to be - it's all hype!!!

Tom

Sounds like a good cheap alternative... My XT 550 isnt realy an XT550... My thing is the Honda odysseys. (off road gokart dune buggy type deals) I took the stock 250cc motor out and droped in the 550. Im looking for more power and cleaner response. Even though i can already do wheelies at will :devil2:

Raptor carbs
 

Every one has an opinion so I will share mine. I had many problems with my original carb on my XT 600 so bought a raptor carb set off ebay. Took a bit of work not to much mind you but I now love my XT once again. Would never put on the original carb set. In fact threw them in the trash. :funmeteryes:

Is it better now, does it have more power due to the "extra fuel"??:cool4:

Raptor carb
 

Yes it's better now! Starts better, responds better, runs much smoother. Like I said though I had to do a bit of work, including setting the carbs up for a smaller motor. So it's not really getting "more fuel". Just better fuel.
If your not one for spinning a wrench I'd say leave this one alone. However if you have some skill than this is a great swap. After running one one my bike I would never go back to the crazy set up that was there.
Good luck to all.
Breed:thumbup1:

I put them on my bike last year. I had been wanting to do it ever since the raptor came out in 01. That motor basically came from the xt600. I had to change my throttle over to a motion pro twist throttle for a raptor and the carbs fit better with the manifolds off of a 1990/newer xt600. I also got rid of the airbox as the boots to the carbs didn't fit with either my 87 xt600 boots or the raptor boots. This involved ordering custom k&n angled air filters, raptor carb-airbox boots, 2.5" pvc to adapt the filters to the boots. It's a very tight fit, but it works really well. I had to change the stock raptor jetting about 5 or 6 sizes up though (my motor is heavily modified) in order to get it right.

My next project is putting the raptor 660 motor in my bike. I got a motor from a buddy who's raptor caught on fire. I'm going to have to have custom radiators made to fit it though. The new xt in Europe is a 660 now. I wish we had them here in the states:( The europeans get all the cool stuff! Check out the xt660x supermoto that the europeans get. Lucky!

Yamaha XT660X

Raptor
 

Love it bro, Let me know if you ever get the 660 into your bike.:thumbup1:

will do. My only concern is how the gearing will work. I might have to play around with it a bit.

Tell us more about your bike, such as installing the rear disc break and the UD forks.

I like what you've done to it.

What else did you do?

Indeed!......:cool4:
It does look a little familiar.....:mchappy:

http://img.photobucket.com/albums/v1...s/XT6SM005.jpg

The mods you've done sound Exactly like what I'm looking to do to mine.:thumbup1:

I'm boucing this thread one year forward in time lol

Keith: Which jetting did you end up with? I know yours is a 550 but it's much modded then mine....so it shouldn't be too way off...

I've been lurking ebay for a dynojet carb kit for my raptor 660 carb but the one I found, the seller told me it's a stage 2 kit....

Here is the description from Dynojet + link: http://www.dynojet.com/pdf/Q414.pdf

Q414.001
2001-2005 Yamaha 660R
Raptor
Stage 2

For mildly tuned machines using a modified air
box, with a stock or aftermarket filter. May also be
used with a good aftermarket exhaust system.

Parts List

1
Main Jet
DJ136
1
Main Jet
DJ138
1
Main Jet
DJ140
1
Main Jet
DJ142
1
Main Jet
DJ144
1
Main Jet
DJ146
1
Main Jet
DJ148
1
Main Jet
DJ150
2
Fuel Needles
DNO660
2
Slide Springs
DSP026
2
Needle Springs
DSP77
2
Adjusting Washers
DW0001
2
E-Clips
DE0001


Mods are, Kedo oversized downpipes, WR450 or Jardine RT4 muffler, K&N style air filters and the raptor 660 carbs...

I have my XT600E at my island and it goes from sea level to around 1500 feet which is somewhere I rarely go to so....sea level to 1000 feet is more than enough....


Vando :rolleyes2: