From: | Dr. Pepper | Electronic: | wysongslkpan-A-yahoo.com |
Subject: | RE: 165/175 jug, etc. | Date: | Sun Oct 16 08:49:18 2011 |
Response to: | 16456 |
Chuck, The jug,piston,rod,head are the same size,the later rods have needle bearings and can't be rebuilt and early one have rollers.There is a spacer that is used on the 175 to compensate the longer stroke,it goes under the jug~~without it the piston will hit the head.If you take a 175 and put 165 flywheels in and leave the spacer out it should make it a stock 165 with no loss of compression and the other way is to take a 165 and put 175 flywheels and the spacer in and then its a 175~~~Am I correct Mutt ? See picture of spacer,I found this out the hard way when I did my motor ----- ORIGINAL MESSAGE FOLLOWS ----- Since the 175 has longer stroke, how about the 175 cylinder height? How about the 175 cylinder head? My 175 was destroked with more available 165 flywheels during a rebuild, and wonder if it lowered the compression in the original cylinder? If so, how about milling the head to compensate? ----- ORIGINAL MESSAGE FOLLOWS ----- The 165 175 have the same bore, the 175 has a longer stroke. ----- ORIGINAL MESSAGE FOLLOWS ----- I need to replace the pistong rings on my 1963 175BTH motor. I can only find listings for new 125cc and 165cc rings on sites such as harleyhummer.com. Are the piston and rings in a 165cc and 175cc the same? |