Quote:
Originally Posted by cosmick
Block heaters are for old diesels.
File-fit rings are for racing engines where more gap than standard helps against ring butting at extreme temps. Can't even get them for any 3-cylinder because nobody races them.
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Block heaters are for any one who does not want to start an ice cold engine or does not want to waste gas for 20 minutes warming up their icy vehicle to defrost it.
That is just an ignorant statement that tells us what you feel and has no bearing in reality.
You are 100% wrong about not being able to find file fit rings for a non raced application.
No one makes file fit rings for a 6.5L diesel but I have them.
I went with rings one over bore size up from your bore size and dermaled them to the gap I wanted.
That is all you have to do to get file fit rings for any application.
You are thinking about applications that require more gap than stock rings provide for use with a power adder such as nitrous or a lot of boost.
You don't file the rings wider than OEM for a N/A street engine, that would be pointless.
On an engine with a bore of roughly 4 inches such as my diesel, OEM rings would give you a typical gap of .030'' to .040''. I run about half that much gap, because I read the instructions on how to file fit rings.
For example, I bought a new 6.5L diesel block with the bore finished to standard diameter. So I got the next size up over bore rings +0.5mm.
I run a .018'' top, .014'' 2nd ring and .014'' oil ring.
I also run ultra low tension oil rings on my diesel (do not put low tension oil rings on a gasoline motor any of you).