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Old 05-13-2010, 11:30 PM
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383 Crank Gear Issue

I am to the point were i need to put the timing gear on my crank and the gear will not fit. I have installed a few before and never had this issue. Basically the gear slides right on and gets to the point were the shaft begins to taper bigger slightly and it gets completely jammed up and will not seat. The crank is a cast eagle 383 crank and i am running a gear drive. I even tried to put my old double roller timing chain sprocket on there and still no luck. Am i missing something. If i left out some info leme know "i probably did"

Thanks

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Old 05-13-2010, 11:46 PM
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The gear is a press fit the last 1/2" or so of its seat area, you need to drive it on or press it on(balancer installation tool).

There is the possibility the Eagle crank is too big where the crank gear installs, I have heard of this issue with Eagle cranks in the past.

Balancer snout area of the crank nose might also be too large, check that also.
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Old 05-13-2010, 11:49 PM
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Quote:
Originally Posted by Tubbed357
I am to the point were i need to put the timing gear on my crank and the gear will not fit. I have installed a few before and never had this issue. Basically the gear slides right on and gets to the point were the shaft begins to taper bigger slightly and it gets completely jammed up and will not seat. The crank is a cast eagle 383 crank and i am running a gear drive. I even tried to put my old double roller timing chain sprocket on there and still no luck. Am i missing something. If i left out some info leme know "i probably did"

Thanks
It may just need to be boiled for a few minutes to allow it to slide right on the lubed crank snout.

Obviously, measure the gear and crank if possible, that will tell you if there's no way, and if the crank gear needs to be honed and how much.

If had them tight enough to need lightly driven on, but not where it would be considered much of an interference fit.
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Old 05-14-2010, 12:00 AM
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Have you tried heating the gear up? I use a small torch and heat it up plenty and then I use a big enough socket and rubber malet to drive it into place.
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Old 05-14-2010, 12:08 AM
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I might try using a torch tomorrow. Earlier I threw it in the oven at 300 but it didn't seem hot enough. By the time I got outside it was pretty cooled off. If I heat it with a torch it won't get brittle will it. I had a pipe on there and still it wouldn't seat at all. Ohh the gear does slide on the snout it just gets jammed up at that last 1/2"
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Old 05-14-2010, 12:29 AM
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Sounds right. They normally do this. O and not to worry I have heated plenty of them up and no cracking or braking yet. All you have to use is one of those simple small hand held torches and heat it for a while evenly of course and tap it into place. Its not very easy but will do the job.
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Old 05-14-2010, 07:43 AM
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Alright I'll see of I have any luck later. Thanks for the tip
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Old 05-14-2010, 11:25 AM
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It's unlikely, but be sure the woodruff key isn't too tall, causing the gear to jam.
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Old 05-14-2010, 10:05 PM
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Well I slightly beveled the inner edge of the gear with a file and heated it up with a torch and I finally got it on. Thanks for the help guys. Now I just need to finish the build up of my shortblock haha
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Old 05-14-2010, 11:52 PM
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NICE!! Sometimes you got to get it close to red hot in order to get that sucker on LOL. Good luck on your build.
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Old 05-15-2010, 12:26 AM
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Haha you got it, thanks man
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