| From: | Mutt | e-mail: | pigstye13-A-aol.com |
| Subject: | RE: RE: Piston help | Date: | Wed Dec 6 08:17:06 2017 |
| Response to: | 22412 |
|
If you have a .030 piston and your bore is 2.414" that means you have .009" clearance. Just .001" more clearance and you will be able to install a .040" over size piston !!!!! If the bore is that worn, you could take out that one more thou and install new .040" piston, but I'd be willing to bet that it needs to be bored to .050" over. Beware: If your Scat has the correct 175cc cylinder, chances are very slim that you will be able to find a new piston for it. You can get a new .040 or .050 over piston for a 165 motor, but you will need to trim 1/16" off the bottom of the skirt of the new piston, or the piston will hit the flywheels the first time ya turn the motor over. Email me if you can't find a new 175 piston and well see what options ya have Mutt ----- ORIGINAL MESSAGE FOLLOWS ----- ----- ORIGINAL MESSAGE FOLLOWS ----- Hi All The cylinder on my '63 Scat is measuring 2.414in. The piston that was with the motor is a +30. Upon inspection, the cylinder has defined cross hatchings and is worn around the ports only. There is no scoring up and down the cylinder or on the piston(has some wear on the skirt but not much). I'd like to get a new piston kit and am wondering if I needed the next size over (+40). |
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