Question regarding engine balancing
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Question regarding engine balancing
Hey everybody, been a long time reader of the forums and appreciate all the info. I have a quick question regarding balancing an engine I'm building.
I'm building a 302 based 347. Block is going to the machine shop this week. I have a 28oz external balance crankshaft from Scat as well as 28oz flywheel and damper. Does it make sense to have the machine shop internally balance all the components even though the engine will have externally balanced components? I understand the external balancing is just counteracting inbalances in the rotating assembly but would it be beneficial to balance everything internally?
Forgive my newb question.
Edit: Just to add a little more info....engine will be going in a 1956 F100...intended for just street driving/cruising...347 should make about 400 hp.
I'm building a 302 based 347. Block is going to the machine shop this week. I have a 28oz external balance crankshaft from Scat as well as 28oz flywheel and damper. Does it make sense to have the machine shop internally balance all the components even though the engine will have externally balanced components? I understand the external balancing is just counteracting inbalances in the rotating assembly but would it be beneficial to balance everything internally?
Forgive my newb question.
Edit: Just to add a little more info....engine will be going in a 1956 F100...intended for just street driving/cruising...347 should make about 400 hp.
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Joined: Apr 2004
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Pretty sure that's going to require the entire rotating assembly to be balanced. Scat sells entire assemblies that are all balanced, but that doesn't look like an option here, unless they sell something matched to that crank. Your choice of rods and pistons may or may not play well with that crank. For a 400 hp motor, get it all balanced at the shop.
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The crankshaft that I have was actually part of a stroker kit (pistons, rods, etc..). After reviewing the info on summit, it says it's an unbalanced rotating assembly. So I'm definitely going to have the machine shop balance everything. Thanks everybody for the replies.
Hotshot
Joined: May 2003
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From: south louisiana
Get everything together and have it balanced. You''ll also need the rings too, and the wrist pin retainers. Every part that rotates needs to be there when done. (nuts, bolts, damper key, etc.) if it's going to have a manual trans, the clutch disc and pressure plate need to be zero balanced so as to not affect the rest. With an automatic, the fluid in the torque converter equalizes that part in operation.
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