XJ/FZ Cafe Project

not a bad idea.

(althoug I think I'll get this thang built before I start tuning the life out of it)

 

good day,
interesting observation ....i was wondering if you would post up the specifications for the uk exhaust cam. i may go on a hunt for a cheap one if it means HP! hubie.
EDIT: USE AN INTAKE CAM IN PLACE OF THE EXHAUST? very interesting. anyone out there actually done this? i need to do some research on the cam specs. anyone else have any input on the cams?

 

I did that on my SV650 and it worked.

 

I have an FZ600 I got in 87' and an FJ600 I got a few years ago and love them both. The trouble is getting a good 16" tire for the front end of the FZ, 18's are not that easy either though. The carbs from the FJ600 are Mikuni BS32 and the FZ wore Mikuni BS30. The cards should swap if you go to individual cone filters and remove the air box. The main reason the FZ was down a few hp was the frame was designed for the FZ400 sold, at that time only in Japan, and as a result it was not big enough to feed the larger carbs on the other 600. If you do go with the individual cone filters and or the larger carbs you will need to re-jet them. I would not be sure what jet kit to get if the came timing is different between the two but if that does not matter I will tell you the jet sizes and needle settings that I run and you can start there. Good luck.

I have a pic of my FZ in it's current condition.

 

I swapped my XJ forks and front tire for an 86 FZ600 and it handles great!
The front tire that works reallt well for me is the Bridgestone Battlax BT45 sport touring. It has really decent grip and handles rain very well. When I did my swap I just took off the XJ forks, tire and all and replaced with the FZ forks, tire and all. There was no fabrication or "backyard fixes."

 

I've still not managed to get the parts to continue with the build, but I have finished the carbs off! Yamaha cheeped out during production and only put chromed carb tops on the outside carbs, so I took the chrome ones off and swapped them for steel ones on my XJ. So now XJ has 4 chrome carbs and the projects has steel tops, which are now painted black
(this is to tie in with the theme of the bike, more of which later).

I have been having a few problems with my XJ so this has kinda taken up my workshop time.

Boyoboy, I'll find the spec of the u.k. cams and post them up as soon as I can.

Slightlyoffaxis, yeah these bikes are great, very underated these days.
Love your FZ...looks like your quite busy! I will be fitting individual filters to this project (I am not really impressed with the PVC tube mod that some people do) So I will be experimenting with jets and needle clip positions etc.

 

Oh, as for tyres...Bridgestone BT45's front and rear for both bikes.
Reasonable costs, good wear rate and excelent handling characteristics.

 

Does the PVC mod your talking about have to do with the hose that runs from the air box to an opening on the crankcase on the left side, as you sit on the bike?

 

Nah, thats the crankcase breather.

The Pvc mod, uses plastic plumbing tubes to link the carb intakes and has a cone filter sticking out the side of the bike. It's detailed elsewhere on this site. personaly I think it's a pretty nasty modifaction.

 

do you mean nasty as a good thing?

 

It doesn't have to come out the side, on my FJ it comes out the back and there is just enough room for the battery to be tucked behind it. Battery has to be turned 90 degrees and the other electronic have to be rearranged a bit.

 

Delete

 

That looks verry restrictive, for a four cylinder motor getting air via one small filter.

 

There are two on this set-up...just hard to see. Here's another pic. Still testing but plugs have been looking pretty good.

 

FJbell, Is there any benefit over the airbox on the FJ?
I don't see the point on my XJ as the airbox was designed with the bike, and works well with the standard jetting.
Without meaning any offence, unless the original airbox is unavailable I can't see the point in this mod.
If it were a performance thing I would go with four individual filters, and a carefull carb set up.
Although I must admit that your setup is a bit more elegant than most.

Of course I may be incredably wrong about this........

 

Well I have a swingarm and all the parts ordered I need to complete the rolling chassis. should be here about thursday. will post pics when I get them!

 

I think FJbells airbox was missing from the word go - hence the need to do something else!

 

In the case of a missing airbox, and with the original being pretty scarce in the US, I would probably do the same thing......

 

Yes, airbox was long gone, bike was in a field and had been left for dead. Not sure if the pvc plumbing is going to be permanent, but I needed something to restrict the airflow so that the BS32's would idle and run half way decent. Still trying to work out some title issues before I decide what the bike is going to be used for and how much money I'm willing to throw at it. Glad to see we have a few FJ's and older FZ's hanging out here so we can compare notes.

Who knows Kevw, we could be related somehow. My ancestors came over from Scotland to Prince Edward Island 250-300 years ago then some migrated to Minnesota were I was born. Live in Denver now, last name is Bell.

 

You never know!!! My last name is Wilson, but I am decended from the Clan Gunn on my fathers side and Clan Gordon on my Mothers.
(Scottish history is quite complicated!!!!!)

As for your FJ, get it road worthy and see what you think, I must admit, I really like mine, it's quite light, reasonably powerfull and handles well. (and it's damn comfy!!!)

The only issue is you can't buy a decent exhaust for them in the UK. Only a Motad Neta, and they screw up the carbs something awfull!