How many Pistons do I have to ruin

[John Tice]

I’ve been removing studs for other customers for many years now. Even with good stud pulling equipment will fail when the studs snap off with a good twist. Our favorite tool is a set of 4 ea., 6,8,10, & 12mm. Also the cylinder is mounted on a mandrel & chuck mounted in the lathe. This is the only way which I’ve found that the cylinder can be protected from damage




The tools have 3 fingers which grab the length of the studs, the fingers cam in on the studs & if you’re careful the threads won’t be damaged. When all else fails & the studs snap off; a heli coil is in order.









This is the Hash type of stud puller; it will grab the stud but destroys the threads in the process.


Installing Heli Coils


Chasing threads


Checking thread pitch with thread gauge




Pulling the locater dowels with a transfer punch & vice grips

John Tice
503-593-2908 Alternate 541-508-3944
www.smallenginemachineworks.com & www.nwsleeve.com
Turning Custom Cylinder Sleeves Since 1971
http://forums.everything2stroke.com/...d-the-Shop.com

[Scootertrash]

With how stuck these studs were I guarantee you a stud removing tool wouldn't have fared much better. If vice grips don't work, get bigger vice grips. If that doesn't work, get an actual vice. If that still doesn't work, add some heat into the mix. Fortunately I didn't have to use heat.

You're offending me with your bad attempts at humor oldskool.

You're offending the members of this site with your extremely bad and even more feeble attempts at being a mechanic. The only real tool in your shop is you.

The only guarantee with you is that the sh!t you say gets more and more stupid.

If you had used heat at the first sign of stubborn studs, it's entirely possible that you may not have had to spend so much time dicking around with them. A little Kroil helps sometimes too.

It's not electrolysis it's galvanic corrosion.

"Better to remain silent and be thought a fool, than to open your mouth and remove all doubt."

[cbx1170]

i jus read last 4 pages WTF? no silencer,,,,, get the faak out a here. Next.......

[Scootertrash]

Nah, It's all cool!!! I'll just fatten 'er up a bit!! Sounds badass!

[oldskool83]

well thats a 81-82 250R for starters....not even a 83R

[John Tice]

Call Hall Tool Co. Give them a call for your stud pullers
1-800-452-7755
They open 7am pacific

[John Tice]

After reading this for the last2 hours something else comes to mind. 1. Using a flap wheel in the bore is glaze breaking not honing. 2. When boring your cylinder; bore it upside down from the bottom. We don’t know if the top & bottom is parallel. The crankshaft must be perpendicular to the bore. 3. A ball hone is suggested? This isn’t a hone, it’s s glaze breaker. Use a real cylinder hone, WHY. Because with a glaze breaker you will never know if the cylinder is out of round or tapered.

Another suggestion; At BDC drill a ½” hole in the back of the piston just below the bottom ring aligning the hole with the boost port. I’m assuming that you’re running a reed valve engine. This modification will cause the fuel to flow through the bottom side of the piston, aiding in cooling the cylinder.

Why a cast piston from EBay? A forged piston is 4 times stronger than a cast OEM piston. How do I know? I’ve tested them each in my shop

JT

[loganm]

What are you responding to.....

[loganm]

I hope he wasn't taking my egg beater hone post seriously... Lol

[Dirtcrasher]

We'll he seems to be a serious man that is very professional. If I were you, I'd just send him everything......

[tripledog]

17 pages and nothing on.

[AK47KID]

I'm have a suggestion! Why not jet and tune your carb RICH and work your way back??? Think that a plug costs alot less than a new piston....: .... thought you'd take my advice over the experts since you haven't listened to them....

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[loganm]

I'm have a suggestion! Why not jet and tune your carb RICH and work your way back??? Think that a plug costs alot less than a new piston....: .... thought you'd take my advice over the experts since you haven't listened to them....

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Because with the wrong needle in the carb even a 145 main reads rich (stock is 152) at WOT but still reads way lean at 1/2 throttle. So it's hard to start rich when your jetting doesn't make sense. I'm starting at a 160 main Athis time due to some carb and exhaust manifold modifications.

[AK47KID]

Oh yeah I forgot, you didn't have a muffler.... which caused over heating, which caused a seized piston

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[poohbee1]

I like this john tice very informative what an asset to the community . I'm heading back to the garage 9 psi for 3 hours shes going back together