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Restore RC Nitro Piston to Liner Fit
When your piston to liner fit becomes sloppy with a poor fit, it is EASY to refit the piston to the liner. Buy yourself a VERY GOOD tubing cutter from Sears ( http://www.sears.com/shc/s/p_10153_12605_00951691000P?vName=Tools ) about $32.00. That purchase will be a once in a lifetime purchase that you will use it over and over. Don't ever ever ever ever use this cutter for anything else. The wheel that comes with the cutter will last almost indefinitely, but you might pick up a pack of spares. Keeping the cutter razor sharp is critical.
OK, now I will tell you how to use this tool.
Most pistons have an oil groove at the top of the piston. It is usually VERY NEAR the top of the piston. If the piston does not have an oil groove, it is easy to make one with the tube cutter. The cutter will EXTRUDE the oil groove making the piston tighter in the liner. It is CRITICAL to be very careful here not to get the piston too tight. You want to push the piston up into the liner and when it stops, look into the exhaust port and see the wrist pin in the MIDDLE of the exhaust port window. That is about how tight you want the piston to fit. You can re-fit the piston over and over this way and keep a great seal. The fit will go away quicker than if the piston was perfect to start with, but this will recover a loose fitting piston/liner.
I hope that you enjoyed this Technical Note. I would also like to offer you a Special Deal on The Engine Analysis Software available ONLY to you and those people who have signed up for our Mailing List on the Web Site. If you would like to have your copy of the Engine Analysis Software, use the order link at: http://engine-analysis-software.com and use the Discount Code: "UAW" and you will buy the software for $25 off of the regular $99.95 price. This is a limited time offer, so get the software the Pros use and advance your performance.
Would you like more tips like this? We would also like to invite you to join the NEW EAP Discussion Forum to find answers on the most effective use of the software. To join this Forum, Sign Up at: http://engine-analysis-software.com/cgi-bin/yabb2/YaBB.pl?action=register Our forum has not been made Public, Except to my mailing list. It will build quickly as I put out the link to our Software Users. It is MANDATORY to sign up using your REAL NAME. It will be a closed list open only to people using the Engine Analysis Software. I will not use your e-mail address for ANY purpose other that this Forum!!!
Please invite your friends to join our Mailing List on the http://Engine-Analysis-Software.com webSite.
Marten (Marty) Davis Developer
Engine-Analysis-Software.com
7 time National Champion
Member IMPBA Hall of Fame
IMPBA National Speed Records
About the Author Refit a old RC Nitro Piston and Liner Tips from the Originators of the RC Nitro Engine Analysis Software. |
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