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Old 10-07-2018, 06:20 PM   #8 (permalink)
Piotrsko
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Quote:
Originally Posted by HaroldinCR View Post
Anyone know what a piston stretcher is ? If not, I doubt if anyone would believe how I rebuilt my 1st car engine. If anyone does, I can explain how I learned to rebuild probably 20 or so engines, very inexpensively.
Yup. Also sandblasting the inside to grow everything but the crown. Oversize rings in hand cut grooves. Oversize piston pins. BTDT. Ridge reamer to even out the bores.

You can hone the bores to reasonably close tolerances but not with a ball hone. DID that with a 1/2 inch hand drill and a spring hanging from the rafters. Drill press would have been better, but didn't have one.

My take: wornout engines have less hone marks.
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2000 F250 7.3 CC 20+ MPG @ 10000 #
2013 Golf tdi 47.5 mpg neutered, summer fuel
1988 Ranger EV Volt batts>> 17,000 MPG and climbing. Apart for rebuild.
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