1985 Yamaha FJ1100... aka The Fun-Hammer

flipstyledsm22

Lets go fishing!
1984 Yamaha FJ1100... aka The Fun-Hammer

It's time to get a thread started on the FJ.

The back story:
Original owner bought it brand new and gave it to his best friend. Best friend rode it for a while and then lost interest... Kept it registered till 2017. It mostly sat outside of the business center he owns. Finally, the second owner told a shop owner that the FJ parked beside his shop is free for the taking and handed the title, keys, and a few miscellaneous parts over... This shop owner is a buddy of mine, who offered it to me... So it has a history of being given away a lot.

Current status:
I was able to start it up and ride it home (which is about 25 miles away). It rode rough. Probably needs a good tune up and fresh fluids.

I already ordered all the basics for a time up. Thought I'd get it running real nice first, before investing more time/money on modifications.

I ride it pretty often in the mornings... Short trips. I take all the bikes for a few laps in the driveway and sometimes around the block (around the block is 6.5 miles). Yesterday I rode into town to fill her up with gas. It only stays running with the choke partly on, otherwise it'll sputter out. Smells like it's dumping too much gas into the carbs. I also think the shocks need to be filled... I would hammer the throttle and on deceleration it would go into a mini death-wobble. As of right now, it loves rolling burnies... So she earned the name Fun-Hammer.

Good thing the tires are old and my burn out marks just sweep away :twofinger

Future plans:
Source good original plastics and windscreen. Give it a almost stock paint job to retain the retro look, but use my color preference. Update suspensions and retrofit 17's, so I can run modern sports tires.

Hope you guys enjoy the progress :thumbup
 

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Enchanter

Ghost in The Machine
Staff member
If that is your bike in the picture, it is a 1984. I put 88K miles on my 1985 FJ1100. I love the shape of the fairing. Yamaha did a very good job with that design.

The forks were very undersprung from the factory. That may be part of your trouble.

They are very easy to work on due to the frame wrapping around the engine. I got to the point where I could do a valve adjustment in under an hour.

Sometimes I miss that bike.
 

flipstyledsm22

Lets go fishing!
Got a bunch of FJ parts from Frame Man!!! Awesome guy btw! Going to go back to him sometime before the end of this month to get FZR1000 suspension parts to get the modern sports bike tires on her.

Shelved the FJ for a minute, to focus on other things. But I did tinker around and play with sheet metal for the first time. The chin spoiler was broken and the face of it was completely gone. I ended up making a cardboard stencil, transferring it over to some scrap sheet metal, cut it to size, drilled out the holes for air flow, and then formed and added the mounts.

I wanted to do the dimple die, but I formed the piece and forgot... maybe I'll give it a go again on a fresh piece of scrap sheets.

I'm too lazy to downsize the pictures, so I'll just plug a link where I uploaded pictures already

Link: https://www.motohouston.com/forums/showpost.php?p=4203104&postcount=8
 

afm199

Well-known member
My first big Japanese bike was an 84 FJ1100 with a 1200 kit. Loved that thing. As Tim said, the fork springs are way too soft.
 

R3DS!X

Whatever that means
I think most people would be really surprise how well those things can rail. just throw form r6 brakes on there, maybe the whole front end and you're golden.
 

afm199

Well-known member
I think most people would be really surprise how well those things can rail. just throw form r6 brakes on there, maybe the whole front end and you're golden.

I used to take mine on Sunday morning rides, and be told stuff like: "I can't believe how far over you lean that thing and how fast you go on it."

Really a fun bike. Really easy to ride. And that grunt....
 
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