harmonic balancer bolt 327 - Chevy Nova Forum
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Old 15th-April-2007, 05:11 PM   #1
RICKSNOVA

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harmonic balancer bolt 327

I've got a 1962 model 327 and I noticed that the harmonic balancer will just slip right off of the crank. I know this is a problem. What is the best way to fix this? I've been told that it needs a bolt to hold it on, but how do you do this on a built engine. Its on an engine stand right now. Can a person drill and tap the crank? Thanks for any help.
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Old 15th-April-2007, 05:19 PM   #2
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i'd be first concerned if it's the dampner or if the crank snout is off... dampner too big, snout too small.


i've seen where some guys have the dampner honed for a slip fit but i'd really doubt that's the case in your situation...


check the size/thread pitch of a C/S bolt and YES the snout can be drilled and tapped... make sure it's very straight though. the job IS much easier to do with crank out of engine but it can still be done... don't get any debris in through the timing cover seal area... that'd be a bad situation for sure
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Old 15th-April-2007, 05:29 PM   #3
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thanks for the info

Me and my father rebuilt this engine probably 10-15 years ago. It was the orig. balancer that came off of the motor. I know it definately didn't slide back on when we put it on then. It is still fairly tight now but will just slide off without alot of effort. Probably lucky it didn't come off when it was in the car. Thanks
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Old 15th-April-2007, 05:33 PM   #4
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i've always liked the comfort of knowing there's a bolt there... a little insurance, ya know ???

ya might wanna drill & tap it... but be carefull to D&T straight and correct size (which i ferget right now)
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Old 13th-February-2008, 11:45 PM   #5
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I already played that game once. If the motor is still out of the car, pull the crank and take it to the machine shop. Let them do it up or get another crank. Shortcuts are usually an inexpensive way to spend a lot of money at the worst possible time, causing the most amount of inconvenience possible. Bolting the balancer and the extra effort gave me a warm fuzzy after we launched one. An expensive lesson and very inconvenient. Would have been way cheaper to go with my gut instinct. Usually, if I ask myself the question, I need to do it. Can't be much help other than some experience brother.
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Old 14th-February-2008, 12:42 AM   #6
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this thread is old!
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Old 14th-February-2008, 12:53 AM   #7
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Sorry Al, didn't see the dates. Just running through the site having a good look about.
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Old 14th-February-2008, 11:59 AM   #8
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the Best of Tech archive has more on the subject. And yes, they are "old" threads.
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Originally Posted by Paul Wright
Building a small, high rpm engine
with the perfect bore, stroke and rod ratio is very impressive...
like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.

Cubic inches is like Indiana Jones with a cheap pistol.
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Old 14th-February-2008, 12:45 PM   #9
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Quote:
Originally Posted by 76SleeperSS View Post
Sorry Al, didn't see the dates. Just running through the site having a good look about.
HA HA, don't feel bad, I had a big old spill going when a post caught my eye from a member no longer with us.

Al
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