Hi all. My first proper post
I'm currently rebuilding a RRK. I also have a knackered RRJ which I purchased for spares.

I found the rrj air ducts didn't line up and bought some rrk ones on eBay. The rrj joints look like they would actually direct air through the frame hole. While the K ones seem look as if all air is deflected up to the tank. Having read through the forum I see the bikes are jetted slightly differenty. The J having larger jets. Is this to do with the different air delivery? ( seems to imply the carbs on the j get more air?) I may be wrong but the J seems to be unrestricted from what some people have said. Would it be worth modifying the J joints and ducts to fit and using the jets from my spare rrj ? The speed restriction is already removed by the way.

http://i304.photobucket.com/albums/nn18 ... 04559B.jpg

Cheers for any advice in advance.
Matt

Does one go carb side of the frame and the other fairing side??

Nope they are each one of a pair. The top is the rrk, the bottom is the rrj. Both sides of each pair are identical apart from being reversed of course. They both attach to the frame just behing the steering on each side. Cheers

See you're in farnborough. I went to farnborough tech for 2yrs

I think I'm right in saying the air ducts are different. IIRC the RRJ has holes in the front of the frame and the RRK doesn't. So the ducts are just for show on an RRK.

Whey hey i did my N.C. there myself

The rrk Does have holes in the frame. But the joint blanks them off.

http://i304.photobucket.com/albums/nn18 ... 2DB863.jpg - RRJ

http://i304.photobucket.com/albums/nn18 ... DD5297.jpg - RRK

Just seems like the capability is there for the directed air but for some reason they choose to blank it off and down jet the carbs for '89. Does anyone know anything about this ?

RRJ and RRK air ducts are completely different as is the air box and chassis ....

I realised the airbox difference today after fiddling with the J. Seems as if the air ducts do nothing on the J as well. Very confused about the point. I think I should modify the joints to use with the K airbox and I'll be On a winner.