Rebuild time... '97 getting some much needed attention

[brianmacza]

Redoing my '97 - 278k Km so far and she's weary

 

Redoing paintwork, fork seals, steering head bearings, replacement front disks, replacing the rubber brake lines with braided steel lines, new cush rubbers in the rear hub with new sprockets and chain, and new emulsion tubes and jets/needles in the carbs.

 

Bike is stripped down almost completely already, but I can't get the FUCKING CARBS OFF.... the rubbers are almost bakelite hard. Tried WD40 soaking already, but that just made things slippery. No movement in the damn rubbers.

 

Advice? Please?

[rockmeupto125]

Heat gun, wood blocks to protect parts, and a couple pry bars.

[SwampNut]

 

 

[brianmacza]

3 hours ago, rockmeupto125 said:

Heat gun, wood blocks to protect parts, and a couple pry bars.

 

Will try this tomorrow

Reconditioning them might be a chemistry experiment 

[fizzy]

1 hour ago, brianmacza said:

 

Will try this tomorrow

Reconditioning them might be a chemistry experiment 

It is a chem experiment that will last min 2-3 weeks. After which they will be in "serviceable" condition compared to what they are now. 

[superhawk996]

On 8/8/2024 at 12:00 PM, fizzy said:

It is a chem experiment that will last min 2-3 weeks. After which they will be in "serviceable" condition compared to what they are now. 

They should be serviceable within a week.

[RXX]

Where are you getting your parts? Partzilla is being very easy for me to use.

I am doing something similar as you.

[tomek]

IIRC brianmacza moved from South Africa to one of neighbouring countries. 

 Partzilla might not be an option.

[fizzy]

6 hours ago, superhawk996 said:

They should be serviceable within a week.

depends how long it takes to soften and how long it takes to shrink back to size.....................................................cue jokes now 😀

[XXitanium]

No rubbing or massaging involved?

[superhawk996]

 

38 minutes ago, fizzy said:

depends how long it takes to soften and how long it takes to shrink back to size.....................................................cue jokes now 😀

In my case they were usable within a couple days.  The boots I did were much thinner so they probably soften much faster, but they also needed to be much more pliable to be able to fit them.  Carb mounting boots just need to be less than rock hard.  They will re-harden, but it shouldn't matter 'till the next time the carbs need to be removed.

 

The down side is that I don't know how well they'll re-seal to the head.  If they use an o-ring that's a simple solution.  If they use the molded rubber as the seal I'd probably coat them with aviation sealer.

[tomek]

3 hours ago, superhawk996 said:

 

In my case they were usable within a couple days.  The boots I did were much thinner so they probably soften much faster, but they also needed to be much more pliable to be able to fit them.  Carb mounting boots just need to be less than rock hard.  They will re-harden, but it shouldn't matter 'till the next time the carbs need to be removed.

 

The down side is that I don't know how well they'll re-seal to the head.  If they use an o-ring that's a simple solution.  If they use the molded rubber as the seal I'd probably coat them with aviation sealer.

Just clean the shit very well, preferably with, of course, small amount of acetone. If you wipe out quickly it won't hurt nothing. And use some sealer. It is not like it is forced induction. Pressure differential is not that great. Should be good till next removal.

[superhawk996]

The pressure differential can be as much as a forced induction motor, probably 10 PSI or more.

[tomek]

Technically yes, but only during shifts and engine braking operation.