If you are talking about the screw in restrictors for the lifter galley in a SBC, no, I have never had any problems with them. They are used to restrict oil to the lifters, pushrods and rockers and to keep more oil on the mains and rods.
I have ran them on roller motors to cut the flow to the valvetrain. I only wish I hadn't used them on my non-roller, flat tappet solid cam, "stock rocker", engine. It cost me a set of pretty expensive lifters and rockers. All from lack of oil.
I am running a roller cam. Never had a problem before but didn't use oil restrictors. Thinking I'm just going to put the factory plugs back in it and try that. Also it's a mowtown block
Ok.. thhanks. I think it's something the machine shop did cuz now they want me to take my block back to them for when ever reason when they had all my parts before when they said they line bored it
Bookmarks