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Old 07-01-2015, 09:46 AM   #1
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Default 96 3200SCR drive rotation ?

So I am repowering this 96 3200SCR, I recently purchased (stole) and this thought arises.
The engines/drives are 7.4L Bravo 3's. Is the port drive supposed to be counter rotation from the starboard drive? (Kinda weird with counter-rotating props on each drive)
The prop sets are identical on each drive.
I've never seen this boat run so I have not a clue.
What's the norm for this?
Happy fourth!
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Old 07-01-2015, 11:42 AM   #2
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With B3's they are set up the same rotation as each having dual props that counter rotate cancel themselfs out.

Post some pictures of the project.
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Old 07-03-2015, 12:06 PM   #3
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I guess I'll just keep this thread going as I repower and do some maintenance.
I am about to remove the gimbal housings, replace one (or both) of the steering pins, bushings, etc., sand off some corrosion, then repaint.

Another quick question, and observation.
I've rebuilt/restored several twins before, but have never seen a power steering pump on both engines. The port engines pump is simply plumbed to itself, so it's not really there for any reason. Did the previous owner simply not have a smaller v-belt, so he could do without it, or is there more to it?
Happy 4th of July weekend!
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Old 07-03-2015, 02:10 PM   #4
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This is a typical installation, boat builders use the same engine in both locations. Since only one pump is required they loop the PS line back to the pump.

Stern drive engines are just made this way.
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Old 07-03-2015, 03:12 PM   #5
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Doesn't seem to make sense, having the engine turn something that doesn't serve any purpose.
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Old 07-03-2015, 03:40 PM   #6
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Economics, only have to stock one engine design. This is cheaper because it's the same engine for single and twin setups .
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Old 07-04-2015, 10:38 AM   #7
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Lets take an opinion poll.
Since I have both engines out, getting new blocks, complete rebuilds, going to (full) close cool, would you go ahead and add thru hull water intakes for each engine?
Have the parts, easy to do now, will provide A LOT more water for cooling.
In the bilge already is:
AC fitting, Generator fitting, toilet (I think) fitting.
Starting to run out of boat for all these thru hull fittings!
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Old 07-04-2015, 04:00 PM   #8
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If you have the thru hulls and strainers as well as room to install them that will have easy access and clean water flow.

The bravo water tube can clog in the transom assembly due to the insert they use to hold the hose in place.
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Old 07-04-2015, 05:50 PM   #9
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Next! What are these (2) loose pieces for on the bottom stainless bar on the gimbal ring? I've never seen them before on others.



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Old 07-04-2015, 08:00 PM   #10
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Neither have I.
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Old 07-04-2015, 08:11 PM   #11
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The port drive is the same. Looks like it's supposed to be there.
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Old 07-04-2015, 09:43 PM   #12
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Can you tell what material they are made of?
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Old 07-04-2015, 10:47 PM   #13
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Aluminum.
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Old 07-04-2015, 11:00 PM   #14
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I looked on some parts listings but could not find them, yet they look OEM.

Guess I cannot hurt to leave them but I would paint them.
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Old 07-05-2015, 09:23 AM   #15
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Found it! They are part of the Trim Down Limit.

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Old 07-05-2015, 12:09 PM   #16
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So the drive hits them and they prevent it from trimming down any further?
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Old 07-05-2015, 01:10 PM   #17
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Hey Look! Ya learn something new everyday!
Special thanks to (A Chris on Iboats Forum)

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Old 07-08-2015, 09:03 PM   #18
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Let Do this!

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Old 07-08-2015, 09:54 PM   #19
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Post pictures away, we love projects.
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Old 07-11-2015, 07:21 PM   #20
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And the journey begins.....











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