WhiteBeard rebuilds his carbs

[movenon]

There you go stealing stuff....
George

Well... I told him I would buy him a $100 beer at the WCR.... 

Sounds like a good deal to me. I am looking forward to the rally.... Looks like the OZ team had a good run of it from there photo's.
George

[WhiteBeard]

Okay, the carb bodies were divided like so...



I needed an impact wrench to get some of the screws on the alignment brackets out, even with brand new carbs.
Phew...

But I came across a problem when it came to removing the float hinge pins, they are really stuck in there. Really.
I find this strange, I had no problem removing the pins from my 28 year old carbs. And I'm afraid of using too much force on those aluminum posts in case they brake.
If I get the time, maybe I will go and buy a heat gun and see if some heat will help. 

[racerrad8]

Just use a small drift and drive only on the pin. Make sure the punch is not tapered ot the stantion can be broken.

There a small shoulder at the head end of the pin that are tight on new carbs.

Randy - RPM

[JMR]

A friend of mine in Georgia welds broken float posts. Works mint.

[WhiteBeard]

Just use a small drift and drive only on the pin. Make sure the punch is not tapered ot the stantion can be broken.

There a small shoulder at the head end of the pin that are tight on new carbs.

Randy - RPM

Okay, I'll continue trying. 

Thanks Randy.

/Nat

[WhiteBeard]

I found this guide on YouTube which is helpful and good for visualizing what you are about to do:

Mikuni Carburetors - Disassembly, Cleaning, and Maintenance - 1985 Yamaha FJ600 - Part 1
Mikuni Carburetors - Disassembly, Cleaning, and Maintenance - 1985 Yamaha FJ600 - Part 2
Mikuni Carburetors - Disassembly, Cleaning, and Maintenance - 1985 Yamaha FJ600 - Part 3

Just wanted to share.

/Nat

[keand3]

Thanks! Just what i wanted to see

[WhiteBeard]

So I managed to remove the float pin using an automatic center punch, worked just like it should!

Also got the carb tops off, except for one screw that is giving me a really hard time... 
Shit, those screws are tight AND soft! And since I didn't get the proper JIS screwdrivers I manage to mess the head up good and proper.



Tried making a slot for a flathead screwdriver, but the screw melts under my fingers.

With the help of a vise grip I got the other ones out, but this one keeps slipping. My next strategy is filing the sides down so the locking pliers get a better grip.

And of course I managed to slip on another screw and make a dent in the carburetor top.



Hopefully nothing serious... 

On another note, I have jetted the carburetors with Mikuni 40.0 pilots and 112.5 main jets supplied by Randy. I will be using Dual Pods and stock exhaust to begin with.
Do I need to get a set of adjustable main jet needles from RPM and shim my needles?

Also, I just got these back from the ceramic coater:


So later I will also be using a Supertrapp 4-1 together with the Dual Pods. Would this warrant another change of jets?

Sorry for the newbie questions...   
Nat

[The General]

I had one like that too. Seem to make a big difference when I put a shifter, tight and directly on the jaws of the vice grip. I think It eliminates the torque going through the vice grip fulcrum point, so minimising.....nahh..I don`t know why it worked..just did? (and yes I was originally turning the jaws preciseley square to the screw axis).

[Pat Conlon]

^^^ ok, need a wee bit of help here...what the fuck did he just say....?  Damn convicts.

[movenon]

shifter
   
The first pint of beer consumed after a work shift is over, usually sold at a fraction of the price of a regular pint. 
George

[The General]

shifter
   
The first pint of beer consumed after a work shift is over, usually sold at a fraction of the price of a regular pint. 
George

Shifter..An adjustable wrench on which you can shift the size of the jaws.--don`t get wrench mixed up with wench (no adjustment on the jaws and can damage nuts.)

[Pat Conlon]

Ok, got it. You bite the soft head, then use a wench to turn the screw.....makes perfect sense...thx Doug.

[movenon]

OH, an FJmonkey wrench ! oops just a "monkey" wrench !  I think the pint or maybe two would also help.... 
George

[WhiteBeard]

On another note, I have jetted the carburetors with Mikuni 40.0 pilots and 112.5 main jets supplied by Randy. I will be using Dual Pods and stock exhaust to begin with.
Do I need to get a set of adjustable main jet needles from RPM and shim my needles?
Later on I will also be using a Supertrapp 4-1 together with the Dual Pods. Would this warrant another change of jets?

Randy is guiding me through this one, so everything is good!