FORD Fe 360 question
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FORD Fe 360 question
Okay so I'm new to the site and trucks in general, but I bought a '71 ford f100 some time ago and I pulled the engine the other day because I would like to make this old 360 into a 390. I already have the crank and rods, and the engine was rebuilt .030 over a couple of years ago is my guess. The guy did terrible with gaskets, and it is an oily leaking mess but it ran good. The bore looks great, cross hatching is still there so my question was if I have to hone the bore to put new rings on? Or can I just install new ones without a problem? Any advice is helpful and if I posted this in the wrong place just let me know and I'll take it down. Thanks in advance!
Post Fiend
Joined: Apr 2002
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From: Waterloo, Iowa
If you're going to the trouble, going that far in, definitely deglaze the cylinders with something like a flex-hone or ball-hone around 240 grit and use plenty of cutting oil. Some use a mix of 10-30 and kerosene for example. This is important, that the cross hatch be the right angles (around 45°) and provide for correct ring seating right away and oil retention. If it's not done there's a good chance the rings will never seat, and it will burn oil forever. Supposedly modern rings seat easier but when doing this stuff there's no advantage to leaving things to chance. New rings means deglazing cylinders, and washing thoroughly with hot soapy water and wiping down with solvent and clean rags to remove all the grit and cast iron dust.
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Tuned
Joined: May 2016
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I would just to clean the bore up and get any glazing off the cylinder walls. Make sure you use the correct grit of stone for the type of rings you are using. Ford what my engine builder (my dad) says the cast rings and chrome Molly rings take a different grit of stone. I would use chrome Molly rings.have fun with your build
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