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post #8 of (permalink) Old 06-02-2016, 12:14 PM Thread Starter
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Originally Posted by bartl View Post
99-44/100% of SBF timing chains are "roller chain". This is a chain with a cylindrical roller mounted on the link pin. This is where you get friction reduction over a plain "link chain".

Unfortunately, many folks...including manufacturers, have come to call "double row" roller chains "double roller", meaning chains with two rows and sprockets to match, with two parallel toothed wheels.

Double the chain, double the teeth, double the friction.
I agree that there will be friction, regardless, but if I compare this to the functionality of roller lifters and a cam, would these not produce more heat as well versus flat tappet?

I'm trying to draw the logic behind what the difference between the two would be.

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