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re: C-113 Crank Pulley


 
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William1984
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PostPosted: Mon Jan 13, 2020 2:41 pm    Post subject: re: C-113 Crank Pulley Reply to specific post Reply with quote

Ordered a new crankshaft pulley for a C-113 engine (press fit no set screw) and am wondering if anyone else has had issues ordering new 6052DC pulleys. I measured my crank snub at 31.94mm and the new crank pulley inner measurement is 31.70mm. This happen to anyone else? Any advice is appreciate. Thanks.
 
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pete 23
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PostPosted: Mon Jan 13, 2020 3:04 pm    Post subject: Re: re: C-113 Crank Pulley Reply to specific post Reply with quote

What does the old pulley measure. In US measurements that mm would be .009 interference fit and
that sounds awful tight to me. I never replaced a pulley with a new one but have had several off
and on. They are tight.
 
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Phil Tibbetts
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PostPosted: Mon Jan 13, 2020 3:18 pm    Post subject: Re: re: C-113 Crank Pulley Reply to specific post Reply with quote

.001 to .0015 in inches(1 to 1.5 thousandths) should be plenty press fit.009 is way too much.
 
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William1984
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PostPosted: Mon Jan 13, 2020 3:31 pm    Post subject: Re: re: C-113 Crank Pulley Reply to specific post Reply with quote


If it helps I converted it

Crankshaft snub is 1.25 70th "
New pulley is 1.24 75th "
 
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Janicholson
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PostPosted: Mon Jan 13, 2020 3:32 pm    Post subject: Re: re: C-113 Crank Pulley Reply to specific post Reply with quote

Have it honed to 31.88. Jim
 
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gene bender
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PostPosted: Mon Jan 13, 2020 9:02 pm    Post subject: Re: re: C-113 Crank Pulley Reply to specific post Reply with quote

how do you hone it with the keyway
 
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Phil Tibbetts
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PostPosted: Tue Jan 14, 2020 4:42 am    Post subject: Re: re: C-113 Crank Pulley Reply to specific post Reply with quote

9 or 10 thousandths is a lot of honing and don't see how you could do it with a keyway. Best to set it up an a lathe and bore it to proper size for fit. IMO
 
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ih560
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PostPosted: Tue Jan 14, 2020 5:57 am    Post subject: Re: re: C-113 Crank Pulley Reply to specific post Reply with quote

Depending on how deep they went with the keyway initially, you may have to broach it a little deeper after boring the pulley out to proper size. It should be a pretty simple operation and you can probably have the pulley running truer than it did originally.
 
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Janicholson
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PostPosted: Tue Jan 14, 2020 7:52 am    Post subject: Re: re: C-113 Crank Pulley Reply to specific post Reply with quote

A wide stone hone, or 5 edged adjustable reamer, spiral reamer or fill the key way with a piece of Key cut to 1/2 height. Jim
 
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pete 23
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PostPosted: Tue Jan 14, 2020 8:24 am    Post subject: Re: re: C-113 Crank Pulley Reply to specific post Reply with quote

Remember nothing else holds that pulley on. That is why I would
like to know original pulley size.
 
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560Dennis
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PostPosted: Sun Jan 19, 2020 7:58 am    Post subject: Re: re: C-113 Crank Pulley Reply to specific post Reply with quote

How did you measure the bore ? Bore micrometer, telescope gage, how many measured di you take ? Very sorry I just wonder why pulley is so far out
of spec , call them and see if you can send it back .
Also need to put a bearing puller like it manual suggested to remove the pulley ,if not a t he 2 or 3 jaw pullers can break the pulley.
Also need to thread in a bolt in to crank to pull off .
Good luck
 
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