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Thread: Omc lower unit bearing carrier.
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05-27-2016, 07:31 PM #1
Omc lower unit bearing carrier.
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05-27-2016, 09:57 PM #25000 RPM
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Nice Idea , wish I had thought of that .....
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05-27-2016, 10:04 PM #3
It was either this or machine a whole carrier, I drilled and tapped it tonight and put it all together just got to pressure test it and fill it with fluid tomorrow bolt it up and run it and see how long it lasts.
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Dave Strong liked this post
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05-28-2016, 09:57 AM #4Scream And Fly VIP
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I machined some out of 7075t6 its not too bad if you have the right tools.
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05-28-2016, 07:30 PM #5
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05-28-2016, 08:17 PM #6Scream And Fly VIP
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Yes they were a press fit. How are you keeping it from turning?
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05-28-2016, 09:24 PM #7
I pinned it to the housing. Drilled and tapped 4 holes across from each other. I used small holes for exhaust since I have the taylor mid and most if not all of the exhaust goes out the mid. Seems to hook up a little better on holeshot now but a little different when I back out of a top end run. Gonna run it some more tomorrow.
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05-31-2016, 01:32 PM #8
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06-07-2016, 06:48 AM #95000 RPM
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I am having a hard time keeping my gearcase alive on my flats boat, its a 60 degree V-6 with a 2000 year model case, Bobs flats type LWP and a Power-Tech OFX4 21 pitch prop. When I disassembled the case to send it to have the nose cone installed, the gear case and internal components were perfect. After putting everything back together and running the boat for approx. 10 hrs the gear oil started looking bad, discolored and particulate matter in the oil. when I disassembled the case it looked like the fwd gear and pinon had fractured. I had a old boat guy in our area claim it was caused by hydraulic pressure between the gear teeth, opinions?
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06-07-2016, 07:34 AM #10
I am no lower unit expert by any means but I know they are very sensitive to shim placement and proper torque,I am sure someone will chime in with some more advise on it, Matt
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06-07-2016, 07:39 AM #11Screaming And Flying!
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was the case welded?
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06-08-2016, 06:18 AM #125000 RPM
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If you are asking about my case, the only welds are were the cone was welded on.
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06-08-2016, 08:27 AM #13Scream And Fly VIP
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It is possible that the welding to put the cone on warped the case or the reassembly was done wrong causing the gear issue. We always welded them with the internals still in them. Post a photo of the gears.
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06-09-2016, 06:39 AM #14
looks very good, cant see why it wont be a success.
if using a snout or other means of exhaust relief it will be perfect.
looks so good its a shame it has to be hidden.
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06-11-2016, 08:19 AM #155000 RPM
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I've disassembled the case quite a few times over the years to check its condition, original shims were in place and all the bearings looked good. The problem started after adding a hydraulic jack plate and the lwp, that's when we started running the case in a semi-surfacing position when in shallow water. In a merc. case you adjust pinion depth and backlash much like we do when we set up a ring and pinion in a differential in a car. Seems like the OMC case adjusts only pinion depth and lets the back lash fall where it may?
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