Question about making own cam bearing tool - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 12 Old 02-11-2010, 06:59 PM Thread Starter
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Question about making own cam bearing tool

So i measured my old bearings, the journals and the new cam bearings and came up with these numbers

Journal ID-2.220 in
old bearing ID-2.085 in

New bearings
OD-2.209 in
ID-2.085 in
Thickness-0.062 in


So i was going to machine a little dowel, With the big end OD being 2.218 in, and the smaller part of the dowel to be 2.084". Then i would drill and tap the aluminum dowel peice and attatch a long steel pusher rod on it with a flat face to hammer on.


Are my measurements ok for the tool?


10.5:1 306, gt40s. 3.73s, 2800 lbs.
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post #2 of 12 Old 02-11-2010, 07:33 PM
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If you have a lathe and a block of steel, have at it. I'd make the inside diameter of the tool at least 5 thousands small, just so the bearing fits properly without hanging up. Otherwise, sounds like you have a good idea of what you're doing.


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post #3 of 12 Old 02-11-2010, 07:53 PM Thread Starter
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is the OD fine is its just 2 thou smaller? and are all the bores the same diameter..? I only measured the front one

10.5:1 306, gt40s. 3.73s, 2800 lbs.
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post #4 of 12 Old 02-12-2010, 12:26 AM
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The bores are NOT all the same size. They get smaller as you go towards the rear of the block. You will need to make 5 different diameter installation adapters.

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post #5 of 12 Old 02-13-2010, 02:01 PM
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You need to be real careful doing it this way - it's entirely too easy to get the bearing crooked in the bore, and your cam won't go in. Most of the good cam bearing tools have a centering cone on the end of them to help you keep it square.
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post #6 of 12 Old 02-14-2010, 12:03 PM
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It is very important that the bearing goes in perfectly square to the bore. That is why people do not make their own cam bearing tools.

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post #7 of 12 Old 02-20-2010, 07:29 PM Thread Starter
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Wut...theyre different diameter? Well anyway, Heres what i made...ill try it out on sunday!



The measurements were taken from the front cam bearing journal and bearing...so well see if it fits in the back..

Threaded rod goes in with a plate that goes on the front, so you can gently squeeze the bearing in.

Also i plan on putting the bearings in the freezer for a few hours before putting them in so they shrink a bit...will this harm them in any way?

10.5:1 306, gt40s. 3.73s, 2800 lbs.
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post #8 of 12 Old 02-20-2010, 07:34 PM
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post #9 of 12 Old 02-20-2010, 07:38 PM Thread Starter
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I read it AFTER i made it This is terrible news...now my assembly process is hung up AGAIN!

some shop wanted 120 bucks to install cam bearings, i almost fell off my seat when i heard that

10.5:1 306, gt40s. 3.73s, 2800 lbs.
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post #10 of 12 Old 02-20-2010, 08:16 PM
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I called around to local shops to see if one would rent a cam bearing tool. The first guy i called said sure. I got there and he asked if i wanted to just buy it. $75 I had a nice complete cam tool. He said he had only used it once or twice since he bought it and was serving him no use. I've used it a dozen times in 4 years.

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post #11 of 12 Old 02-20-2010, 08:18 PM Thread Starter
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I dont mind paying 40 bucks for the local machine shop in burlington to do it. But FACK i wanted everthing done this week in oshawa, as thats where ill be till mid april probably.


Can machine shop still press in bearings with the crank and pistons installed?

10.5:1 306, gt40s. 3.73s, 2800 lbs.
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post #12 of 12 Old 02-21-2010, 09:30 AM
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Quote:
Originally Posted by PolishSasquatch View Post
Can machine shop still press in bearings with the crank and pistons installed?
Probably, but they'll be less annoyed if you let them do that before you block visibility of the oil holes with the crankshaft.

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