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Balancing a flywheel for the 3800SC swap by doublec4
Started on: 05-12-2008 04:01 PM
Replies: 4
Last post by: Matthew_Fiero on 05-12-2008 06:34 PM
doublec4
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Report this Post05-12-2008 04:01 PM Click Here to See the Profile for doublec4Click Here to Email doublec4Send a Private Message to doublec4Direct Link to This Post
Okay, so I'm using the 4spd muncie for my 3800SC engine.

I am getting a flywheel that has already been machined down for the swap. What determines if it needs to be balanced or not?

I've looked at other threads and there doesnt seem to be a definite answer. Some people were saying they didnt balance it because its externally balanced or something? There were all sorts of answers but none seemed definite... I'm a little confused.

I'd like to clear this up. Please post with the answer if you have one!

Thanks,

Chris

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omnivec
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Report this Post05-12-2008 04:23 PM Click Here to See the Profile for omnivecClick Here to visit omnivec's HomePageClick Here to Email omnivecSend a Private Message to omnivecDirect Link to This Post
A good engine is balanced as a assembly, with the pistons crank rods and flywheel attached as a whole. So from the factory flywheels are drilled for minor amounts of weight, even if there externally or internally balanced. Its good idea to take what ever flexplate came off the sc motor and take the manual flywheel to a shop and have them balance the flywheel to the specs of the auto flexplate. U can get away without doing it, but it could lower the life span of the already weak bearings.
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darkhorizon
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Report this Post05-12-2008 04:33 PM Click Here to See the Profile for darkhorizonSend a Private Message to darkhorizonDirect Link to This Post
 
quote
Originally posted by omnivec:

A good engine is balanced as a assembly, with the pistons crank rods and flywheel attached as a whole. So from the factory flywheels are drilled for minor amounts of weight, even if there externally or internally balanced. Its good idea to take what ever flexplate came off the sc motor and take the manual flywheel to a shop and have them balance the flywheel to the specs of the auto flexplate. U can get away without doing it, but it could lower the life span of the already weak bearings.


Thats a winner right there, take your flexplate in with it and balance it like that.
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doublec4
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Report this Post05-12-2008 06:13 PM Click Here to See the Profile for doublec4Click Here to Email doublec4Send a Private Message to doublec4Direct Link to This Post
Hmmm ok... so a machine shop can do this for me?

I know I know... noob questions
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Matthew_Fiero
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Report this Post05-12-2008 06:34 PM Click Here to See the Profile for Matthew_FieroClick Here to Email Matthew_FieroSend a Private Message to Matthew_FieroDirect Link to This Post
No its places that actually DO balancing.. I forgot where i got mine done, it was in Scarborough somewhere..

I took the flexplate in for him, as well as the pressure plate for the clutch.
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