Bore size / Mahle Piston

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May 13, 2009 | 01:47 AM

Capt_Locutus

Thread Starter

4th Gear

Joined: Aug 2008

Posts: 8

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From: Bloomfield,IN

Bore size / Mahle Piston

I have an 1980 FXWG. I was told by the guy I got it from that it had been bored +.040. I had some problems with the front cylinder and took it off and seen that it has the stock numbers 16568-78. Now reading that some will hone original cyliners out to +.040. The piston is a Mahle and has the Harley logo on the inside and says 88L52. So can anyone tell me is this translates into the stock size, or I guess the stock number for the piston. I tried to measure the bore but don't have an actual mic and it measured almost exactly 3.5 inches.

May 13, 2009 | 02:05 AM

kansasroadking

Road Captain

Joined: May 2006

Posts: 720

Likes: 2

From: Kansas

piston to bore fit is extremely critical..... take it to a local machine shop and have them mike the bore and piston, then you don't have to guess what it is.