When my engine was balanced the crankshaft did not have the dowel for the flywheel on it. I installed one to make the flywheel easier to bolt on. Will adding such a small item change the balancing at all?
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Re: ENGINE BALANCE QUESTION
If the engine feels ok than I would not worry about it. However if you have not finished the installation, I would remove the dowel. To ease the installation of the flywheel, simply cut the head off of a long bolt or get a stud with the same size threads as the bolts, put the stud or long blot in a bolt hole, install the flywheel, unscrew the stud or long bolt, and install a regular bolt. Simple. -
Re: ENGINE BALANCE QUESTION
I'll remove the dowel and install the flywheel as you suggested. Thanks...Comment
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Re: ENGINE BALANCE QUESTION
I agree Rob, this is the way to go. My engine was balanced on my 66 L72 this year, and the machinist even factors in oil weight in grams in certain areas in he process. I would take it out. Granted, it is "close" to the centerline of the crank, but, is offset, and will have a slight affect. Why knowingly throw it off? You are doing the right thing......CraigComment
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Re: ENGINE BALANCE QUESTION
If you notice the drill marks where items like the crank and flywheel are balanced, you can see that really very little metal is often all that is removed. The dowel can be enough to give you a roughness in higher RPM and not let you really enjoy, so take it out.
Did you have them balance the flywheel and presure plate also? If not, you need to as even a new presure plate is not balance as much as you will like.Comment
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Re: ENGINE BALANCE QUESTION
Mark - I agree! I did a painful removal once of a new GM pressure plate and flywheel just to have it balanced. It was a night and day difference, I couldn't even stand to run it above 4000 without gritting my teeth. I would never ever blueprint an engine again without a full balance job. When done right, it is such a glass smooth feeling that makes ALL the difference...CraigComment
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Re: ENGINE BALANCE QUESTION
What I ment was if you already finished the in stall and it fells ok then fine. If you have not finished the installation, then I would diffenitly take out the dowel. The sud or long blot trick is a real good alternitive mechanics have used foreever. It works great for flywheels, transmissionse excetra... If you keep the studs or long bolts, you will be suprissed how often you will use them. Good luckComment
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Re: ENGINE BALANCE QUESTION
The place that balanced my engine admitted it should have been in when they did the balancing. They said that the dowel HAS to be installed for safety reasons, and that the bolts will surely loosen and the flywheel can come loose without the dowel. Are they kidding or what?...all six bolts totally loosen? (The shop has an excellent reputation)Comment
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Re: ENGINE BALANCE QUESTION
there is no problem not using the dowel, just use red lock tite on the flywheel bolts. i have built race engine that ran at daytona that did not have the dowel. the 400 SBC and the 454 BBC use the dowel because the flywhell on these engines are part of the external balance of these engines so the dowel is used to make sure that the flywhell is installed in a proper orientation to prevent a out of balance condition. the correct flywheel bolts are shoulder bolts that have a good fit into the flywheel bolt holes so the flywheel can not move.Comment
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Re: ENGINE BALANCE QUESTION
Rob------
Except for the 400 cid small block and 454 big block as Clem mentioned, no Chevrolet V-8 engine ever originally used the dowel pin on the crank flange. So, your 427 engine never had one in the first place. Somehow, it survived the "first time around".In Appreciation of John HinckleyComment
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Re: ENGINE BALANCE QUESTION
Interesting.........thanks......Comment
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