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FJ1100 rubbers

Started by homerfj1100, May 13, 2015, 04:31:43 PM

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homerfj1100

May 13, 2015, 04:31:43 PM
I need an octopus, four hours to get the airbox out. Then figured the trick. Frame moving. Next day. 5 hours trying to get them back. Still not. How??? Please. The bottom of the rubbers just won't wrap around the carb openings. Please help ( or is it skill). Tony.
Homerfj1100

FJmonkey

#1
May 13, 2015, 04:35:40 PM
Warm them up, rubber tends to be softer and more flexible when warm. The older rubber boots do not flex and conform like they did 30 years ago.
The glass is not half full, it was engineered with a 2X safety factor.

'86 Ambulance - Bent frame, cracked case, due for an overhaul
'89 Stormy Blue - Suits my Dark Side

moparman70

#2
May 13, 2015, 05:39:21 PM
Also -- be sure to put the rubber back in the right order ---there is also little finder nibs use them to rotate to the correct position.
     

ribbert

#3
May 13, 2015, 07:44:38 PM
Quote from: homerfj1100 on May 13, 2015, 04:31:43 PM
I need an octopus, four hours to get the airbox out. Then figured the trick. Frame moving. Next day. 5 hours trying to get them back. Still not. How??? Please. The bottom of the rubbers just won't wrap around the carb openings. Please help ( or is it skill). Tony.

OK, you've figured out the frame lowering trick, that helps, and yes there is a "knack" to it that can't really be described. Taking a break and coming back to these sort of jobs sometimes helps.

Have you tried loosening the carbies and tilting them up a bit?

As already mentioned, the rubbers are eccentric and if not rotated to the correct position, will make the box somewhere between difficult (more difficult) and impossible to refit.



Unfortunately there is no secret, just a matter of holding you mouth the right way and pushing and shoving the right direction and the right amount.

Noel
"Tell a wise man something he doesn't know and he'll thank you, tell a fool something he doesn't know and he'll abuse you"

movenon

#4
May 13, 2015, 07:54:59 PM
When I had an air box I used a very small amount of automatic transmission assembly lube on the boots  which looks surprising like plain old Vaseline.
The air box is something I don't miss... One of the very few things on an FJ that I threw in the trash.
George
Life isn't about having the best, but about making the best of what you have...

1990 FJ 1200

Pat Conlon

#5
May 13, 2015, 09:01:05 PM
Yeppers George, I hear ya....

Once you get the air box boots on the carbs, you're not done yet. Now you've gotta figure out how to connect that pesky crankcase vent hose to the bottom of the air box....(hint: I hope you have smaller hands than I)

I don't miss that exercise one bit....
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

Harvy

#6
May 13, 2015, 10:20:26 PM
Quote from: Pat Conlon on May 13, 2015, 09:01:05 PM
Yeppers George, I hear ya....

Once you get the air box boots on the carbs, you're not done yet. Now you've gotta figure out how to connect that pesky crankcase vent hose to the bottom of the air box....(hint: I hope you have smaller hands than I)

I don't miss that exercise one bit....

When I did still have the airbox, I found the easiest way to do the c/case vent hose was to pop the elbow out of the box and leave it pluged into the end of the vent hose. Then I lined it up with the hole in the box and pressed it in with a flat blade screwdriver from above.


Harvy
FJZ1 1200 - It'll do me just fine.
Timing has much to do with the success of a rain dance.

Pat Conlon

#7
May 14, 2015, 12:06:09 AM
Quote from: Harvy on May 13, 2015, 10:20:26 PM


When I did still have the airbox, I found the easiest way to do the c/case vent hose was to pop the elbow out of the box and leave it pluged into the end of the vent hose. Then I lined it up with the hole in the box and pressed it in with a flat blade screwdriver from above.

What I did was to get a brass elbow with threads and keeper nut on one side, and a barbed hose fitting on the hose side and leave it connected to the hose and simply reach in and thread/unthread the keeper nut from the inside of the air box.

I'm kinda slow....it only took me the first 10 years of owning my bike to figure that one out....  :dash2:
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

turbocamino

#8
May 15, 2015, 11:07:18 AM
"Quote"...The air box is something I don't miss... One of the very few things on an FJ that I threw in the trash.... :dash2: :good2:
89 FJ1200 saphire.blu owned 8-9 years.  By far the most satisfying of them all. Constant tinkering got me the best bike you could ever want.

MOTOMYSZOR

#9
May 15, 2015, 12:11:18 PM
I removed left rubber first then I installed air box back.
With removed rubber is ,,easy" or "easier" to reach and connect vent hose. Then squeeze and install back 4-th rubber.
We Are The People Our Parents Warned Us About

ribbert

#10
May 16, 2015, 10:16:58 AM
Quote from: Pat Conlon on May 14, 2015, 12:06:09 AM
Quote from: Harvy on May 13, 2015, 10:20:26 PM


When I did still have the airbox, I found the easiest way to do the c/case vent hose was to pop the elbow out of the box and leave it pluged into the end of the vent hose. Then I lined it up with the hole in the box and pressed it in with a flat blade screwdriver from above.

What I did was to get a brass elbow with threads and keeper nut on one side, and a barbed hose fitting on the hose side and leave it connected to the hose and simply reach in and thread/unthread the keeper nut from the inside of the air box.

I'm kinda slow....it only took me the first 10 years of owning my bike to figure that one out....  :dash2:


There are some good ideas there, but if you just want to refit it without any mods, a pair of these makes short work of it, both the hose and the clip. It's as if they were made for the job.



Noel
"Tell a wise man something he doesn't know and he'll thank you, tell a fool something he doesn't know and he'll abuse you"

homerfj1100

#11
May 18, 2015, 05:27:20 PM
Absolutely fantastic suggestions. All of them really. Remember I'm in Spain but buying things here for rare things is nearly impossible. Yes I have the pliers and they helped a little. But small hands was better, for the crankcase breather. I eventually got everything back together. However, I have bought a second hand set of carb to airbox rubbers ( plus airbox I dont need), cheap. I think the best idea is throw it all away and do something else less fiddly.
BUT spraying the carbs with cleaner, tightening the plugs, cleaning the box and filter. All made no difference to my ( under load, or acceleration, under load) misfire.
Its regular. It a pain, cos you cant enjoy yourself. And because I stupidly left it for 9 months I think its the emulsion tubes.Do you?? Best wishes and thanks, all of you.
Homerfj1100

movenon

#12
May 18, 2015, 07:41:29 PM
 "All made no difference to my ( under load, or acceleration, under load) misfire.  Its regular. It a pain"

My best guess it is in your carbs but make sure your coils are functioning the best they can.  Unplug the coils and check the connectors and unbolt the coils and clean up the mounting.

As for the emulsion tubes,  perhaps but as you have to pull the carbs anyhow do a complete and detailed cleaning.  

Just for information here is a little you tube video on a home made cleaning system that I found interesting.
https://www.youtube.com/watch?t=65&v=R1DtY2VwSyY
George
Life isn't about having the best, but about making the best of what you have...

1990 FJ 1200
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