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Old 08-28-2020, 09:45 AM   #1
flipstyledsm22
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Wink 1985 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

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
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Old 08-28-2020, 02:44 PM   #2
flipstyledsm22
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I just realized I had the manufacturing date wrong... VIN tag shows it being 1984... Well
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Old 08-31-2020, 10:18 AM   #3
cbrfxr67
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awesome,... Love seeing old bikes given a new life!
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Old 09-03-2020, 01:27 PM   #4
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I just realized I had the manufacturing date wrong... VIN tag shows it being 1984... Well
Nice, that's a first gen.

Bullet proof!

Well, except for second gear lol
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Old 09-08-2020, 09:17 PM   #5
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Oil filter, air filter, spark plugs, and oil came in the mail today. Going to perform a thorough maintenance on it this weekend
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Old 09-20-2020, 12:02 AM   #6
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1st minor maintenance... New oil, filter element, air box filter, and new spark plugs

After performing minor maintenance to the FJ and putting new plugs in it... I'm still having issues keeping it running.

At first start, it will smell very rich in fuel and struggle to idle on its own. I have to give it about a full turn on the throttle (while choke is ON) and push the Start button. While it's turning over, I have to twist the throttle back-and-forth 4 to 5 times quickly and it'll fire up. At this point I'm still feathering the throttle to keep it running. I basically have to constantly feather the throttle to keep it running while I'm riding it too. 1st and 2nd gear takes a few seconds to respond before it slowly sputters alive. It'll run fine in 3rd. I have to get it going for 5 miles before it starts running smoother. After a 30 minute rough ride, I'll pull in front of the house and it'll idle perfectly for about 20 second and then it starts losing RPM and slowly sputters dead. It will also drip a lot of fuel after a minute has passed after riding it.

I'm still getting familiar with the mechanics of this big chick.

I hardly took pics, so here are a few. There's a decent before and after pic of the deep cleaning while everything is apart.
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Last edited by flipstyledsm22; 09-20-2020 at 12:04 AM. Reason: Repeated words
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Old 09-20-2020, 11:18 AM   #7
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That's a pretty bad bike! Smooth, fast and as mentioned a bullet proof engine that was used in various forms in multiple bikes for years.
It sounds like deep carb cleaning is in order. Save yourself some grief and just order all new jets. Not that expensive and you'll probably never get the old ones to act right. Replace all the rubber in the carbs that you can get, don't forget the choke parts.
Once they are surgically clean, I can't emphasize enough, really really clean, you'll want to use carb sticks to synchronize them.
Don't under estimate the difference it will make. It will idle better, have crisper response and make much more power once they are sync'ed.

As a former Yamaha shop service manager, I can tell you, take it to a shop and let them clean and sync the carbs. It's a pain and most people require several attempts to get them right.
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Old 09-24-2020, 11:16 AM   #8
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I tinkered around the shop yesterday and did some sheet metal work that I envisioned for my broken chin spoiler. It's my 1st time doing something like this, but it turned out ok. I wanted to roll the holes in with the press, but I formed the spoiler prematurely... Maybe I'll practice that on something else next time.

I still have to finish it, but I wanted to show my progress.

I also found some parts for sale and will get those things Friday morning, along with an extra carburator. I'll just rebuild the carb and switch them out after I get it working perfectly.
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Quote:
Originally Posted by Solracer View Post
People have no idea that I'm walking around with dicks on my face.
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Quote:
Originally Posted by CamelToe View Post
Alright who did it?

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Old 09-24-2020, 01:21 PM   #9
TomballD
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Quote:
Originally Posted by bumblebee View Post
That's a pretty bad bike! Smooth, fast and as mentioned a bullet proof engine that was used in various forms in multiple bikes for years.
It sounds like deep carb cleaning is in order. Save yourself some grief and just order all new jets. Not that expensive and you'll probably never get the old ones to act right. Replace all the rubber in the carbs that you can get, don't forget the choke parts.
Once they are surgically clean, I can't emphasize enough, really really clean, you'll want to use carb sticks to synchronize them.
Don't under estimate the difference it will make. It will idle better, have crisper response and make much more power once they are sync'ed.

As a former Yamaha shop service manager, I can tell you, take it to a shop and let them clean and sync the carbs. It's a pain and most people require several attempts to get them right.
This
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Old 09-24-2020, 01:22 PM   #10
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I had Billy Weiss try and tune a carb set on an 89 GXSR 1100 and he couldn’t even dial it in and that guy was a wizard.
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Old 09-29-2020, 09:05 PM   #11
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If you need a service manual...
https://www.mikesxs.net/manual-fj110...urs-84-96.html

They also sell some parts, might be a useful resource.
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