old trick for worn out engines
 

I am mentioning this..because I was telling a fellow to try it. I remove the piston and take the rod off, put the piston upside down on a firm surface. Using a 1/4 punch placed in the middle of the piston, I give it a smart hit....this slightly expands the piston, making a tight fit again. Only lasts so long, but you will get afew tanks out of it.

It doent hurt to warm it a bit....a bit....

RE: old trick for worn out engines
 

There is a company you can send your piston and sleeve to and they will compress it and send it back. You'd have to go through the breakin process again though. I've read about it in one of the mags. They said it was great and the engine would run almost identical to a new one.

RE: old trick for worn out engines
 

Mabe, but how much does it cost, it it worth it to do that or get a new pistron and sleeve?

RE: old trick for worn out engines
 

You can get a sleeve pinching tool for about £10 to re-compress your sleeve. Tricky job but if its shot anyhow then you have nothing to loose. Iv heard reports of another 3 gallons through a worn sleeve..

RE: old trick for worn out engines
 

I think it's about 1/4 the price of the new parts. I've read those sleeve pinching tools don't even compare to the quality of this other compression process.

RE: old trick for worn out engines
 

Check ebuy for "resizing" for options

Hope this helps

RE: old trick for worn out engines
 

someone try my method and see how many tanks/gallons it will take.

RE: old trick for worn out engines
 

The website is www.rayaracing.com and it is like $20.00 for a resize. I havent tried it yet but I have a hyper .21 8 port that has about 10+ gallons trough it. If they can resize the piston and sleeve I will be amazed. The engine will not even hold any compression on a guage.

RE: old trick for worn out engines
 

There is a guy in ohio that was in rc car action with his process. This is the e-mail he sent me:


This resizing is done on a very specialized cnc machine and sizes it at two levels and keeps the factory taper intact.

Here is some of the information about the piston/sleeves renew
It takes 2 to 6 days for me to turnaround, Prices are as follows:
Each piston and sleeve 15.00
Packing/Shipping back to you 5.00 usps. Priority mail w/ delivery conformation,


IF YOU ARE NOT INCLUDING MONEY ORDER OR CASH WITH THE PARTS MAKE SURE THAT YOU MARK DOWN PAYPAL PAYMENT NUMBER AND DATE< THANKS JB

One day service is 10.00 additional, up to 3 sets and 20.00 for 4 sets and up I have to put that fee in there because of the volume that I am currently receiving just to keep it manageable,
I tried doing it for no charge but everyone was wanting one day turnaround,
Thanks a lot< jb
NOTE IF YOU ARE REQUESTING ONE DAY SERVICE YOU MUST MARK THE OUTSIDE OF THE PACKAGE IN MAGIC MARKER.

Ship the piston/sleeves and you can leave the rod attached if you want to, along with a money order or you can paypal
The [email protected]
send to:
John bohland
285 fox road
Lexington,ohio 44904

Thanks johnb

Also include a copy of your mailing address and payment information with the parts if you do not do this, your package will be delayed because if have to search through back emails to find the info, thanks jb