pipe restoration

I borrowed the pipe tools from a friend, sure worked really well.
I got 4 pipes done with great results.
I was using some big heat for some deep ones and 40 to 60 psi air pressure.

got a few pics.

did my not stock 86 pipe



the 87 WR 250 pipe was rough after a season of single track, now its all good again.



another 400 aftermarket pipe, all dents gone.

Nice work!

the tools look easy to copy, i will be making up a set.

looks good!

Streets are dry so i am going for a rip on the WR with the 400 motor, first time with a stock pipe.
The Up-Tite pipe was no good for putting around on the street.
Sure can feel the low end gains, i just did a 1rst 2nd 3rd blip in the alley short shifting fast and no lag.
The gearing on this bike is 15/48 so its not meant to crawl like my XC.
The pipe i put on just had a few dents to pull and it came from a the last 86 XC 400 parts bike i bought.


























View: https://youtu.be/kc-M3CF-NQ4

wow, thats some tall gearing on the 250! nice on the street im sure

It can pull to a 110 mph, well with the 400 motor, not sure about the 250.
The motor has a new top end with V force reeds and stuff. Good for street racing

Thanks for the pics of the tools. Is there rubber or soft plastic to help seal the pipe to the caps or a temp resistant hard surface?

Some kind of high temp silicone, i think its overkill.
I made my set up yesterday with heavy rubber thats 3/8s thick from some mud flaps.

These pipes look great. Nice work. Going to build me one of those tools...any Improvements you could re om mend after using it on a few of your pipes ?

The "sheen" on your black pipes looks perfect. Care to share what paint that is?

Had it on other pipes before, does not burn off and gas safe.



The same paint is on this clutch cover.

Thanks!

When i first got it i tried to leave the air on with a regulator set at 40 psi at home. Well i needed more heat than a bottle torch so i brought it to work and used oxy & acetylene, but the shop air was set at 120 psi. So i used tire filling tool with a trigger to add the air as i needed it while the heat was on the dent.
Some dents i had tap the edges with a light hammer to flatten out the creases left by a dent

Nice tip on the "hammering" the edges of the dents. Thanks for the paint. That's what I used on my motor & that might of been a tip from you now that I think about it.

Here are the ones i made, never did the drain hole.
I just take the air off and release back through inflation tool.

looks great 86!

those are scary tho, the force on those pieces at 60psi is a couple hundred pounds?...that would give your milk a shake should they come loose.

I would think I would totally overthink it...... with an interior piece slip fit inside the pipe to run the bolts against and some safety wire the length of the whole plot, plus the robot and of course the cinder block wall.
Then again it must work, you survived...

Nice job, thanks for showing it.

I know this is and old thread, but that means every square inch has 40 pounds on it, glad your ok.

Nice work man. I might have to try and make one up. I do the watter in the freezer thing myself, I like this though.

ol mate had one let go at 10psi,major damage to his hand and tendons