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upgrate alpha 1 to bravo xr. transom.

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upgrate alpha 1 to bravo xr. transom.

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Old 02-14-2013, 11:18 AM
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Default upgrate alpha 1 to bravo xr. transom.

Anybody done this change, are the two transom cut outs very different or maybe the same size, any hits guys ?
The existing set up is worn out, and Ive been given a great deal on the bravo set up which is the reason. Power is
bluewater magnum small block. I know ill need a water pump its the transom thats the concern. Thanks.
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Old 02-14-2013, 11:35 AM
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Cutout is the same. May need to drill 2 holes if its gen 1 alpha. Other than that very easy to bolt in place. Will also need a bravo coupler I believe. But transom is easiest part of swap.
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Old 02-15-2013, 05:29 AM
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thanks ICU thats good news.
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Old 02-15-2013, 05:37 AM
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Does that also mean that the bravo input shaft/ motor line up will be the same as the old alpha?
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Old 02-15-2013, 05:37 AM
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Remember though that a straight Alpha to Bravo swap will gain you reliability, but lose you speed due to the higher drag of the Bravo gear case.
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Old 02-15-2013, 11:47 AM
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Too Stroked , Is that drag due to the shape of the gear case in the water, or greater friction inside the gears / case itself?
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Old 02-15-2013, 12:01 PM
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It's due to a larger drive in general and bigger internals requiring more power to turn I think. Whenever you pull the motor you always re align with alignment tool even if you don't swap. So albeit minimal adjustments, you will still need to verify alignment.
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Old 02-15-2013, 02:19 PM
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Originally Posted by bernie
Too Stroked , Is that drag due to the shape of the gear case in the water, or greater friction inside the gears / case itself?
Greater hydrodynamic drag.
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Old 02-16-2013, 04:06 AM
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thanks guys.
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Old 02-21-2013, 12:08 AM
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This is how it gets done.

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Pretty simple actually. Take your time and make sure you drill the two upper holes at the proper angle so the studs/bolts go thru the transom as they should.
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