Yet another Bayliner question

[Biged007]

Okay Baysinker gurus here's my dilemma and ironic as it is this very same question was just brought up in another post. On my 84 Capri 1950 AQ125A there is no motor mounts putting the total weight of that little slug solely on the transom. This has been bugging me since day one and now I read that some in fact did use one so I went looking at the factory shop manual.

Now if I'm seeing this right the 145A in fact does use a nose mount with the mount being sandwiched to the block at the alternator mount and the 125A does not show this nor is there any indication of there ever being one.

Finally my plan is to make one using a mount I have from an old Renkin cuddy with the 4cyl. OMC setup and top strap if you will across the stringers, Am I reinventing the wheel? or is this a mod that should be done and would there be any interest in a pic or two of the finished product.

 

[Bondo]

Re: Yet another Bayliner question

Am I reinventing the wheel?

Ayuh,... It's been just Fine for 20 Years,.... What's the Problem...

 

[Biged007]

Re: Yet another Bayliner question

Ayuh,... It's been just Fine for 20 Years,.... What's the Problem...

You are prob right But I was just looking to take a little pressure off a 26 yr. old transom. and after all isn't it like restoring a Chevy Corvair unless you make a few mods all you wind up with is a real pretty POS

 

[Paul Ryan]

Re: Yet another Bayliner question

I have the same 125. No front mounts. Wierd aint it...lol...But that's how is was engineered and has been running for years. I have yet to see anyone having a issue with engine falling out because of design.

I have bought a 145 that I am going to swap and it does have front mounts. Only thing I can think of is engine torque. You know when you gas a engine real hard and the engine will move up and to the side. I call that a torque roll. The 125, like you said, is a little slug. When I throw the fuel to it I never see the engine move. No torque roll. Maybe the 145 which is 20 hp more than the 125 has a little torque roll that the front mounts help take care of. IDK!

 

[Mark42]

Re: Yet another Bayliner question

I have the same 125. No front mounts. Wierd aint it...lol...But that's how is was engineered and has been running for years. I have yet to see anyone having a issue with engine falling out because of design.

I have bought a 145 that I am going to swap and it does have front mounts. Only thing I can think of is engine torque. You know when you gas a engine real hard and the engine will move up and to the side. I call that a torque roll. The 125, like you said, is a little slug. When I throw the fuel to it I never see the engine move. No torque roll. Maybe the 145 which is 20 hp more than the 125 has a little torque roll that the front mounts help take care of. IDK!

Amazing design. I assume no torque roll because the motor is bolted firmly to the transom. Must be one strong transom! And isn't the Volvo 4 an aluminum block or head? That weight savings might be what allows for the cantilevered engine mount. Does the outdrive balance the weight of the 4 cylinder?

 

[Paul Ryan]

Re: Yet another Bayliner question

There is a large O-ring between the bell housing and transom plate. Then a another O-ring and Metal mounting ring on the outside. From the outside bolts go through and pull the bell housing into the transom plate. So engine weight is going through o-rings. Vibration and torque roll damping.

At least I think that's what is going on. Engine block is Iron, head is alum.

Sorry Biged007! Not trying to hack your thread.

 

[Biged007]

Re: Yet another Bayliner question

Paul are you kidding! thank you this is the kind of stuff that keeps these old lady's in the water. BTW nice detailing on that engine my wife thought I was nuts when see saw me buffing up the copper raw water lines told her it was a Navy thing

 

[Paul Ryan]

Re: Yet another Bayliner question

Yeah I have been really please with my engine restore. Alot of elbow that some pep's dont understand...yep...lol...But so worth it when it all comes together!

Here's my two cent on your dilemma. Your time would better spent with doing something else. Your talking about a huge mod that would be doing nothing but putting a band aid over the under lying problem.

Is the transom failing? Get a large pry bar and wiggle the engine. Engine should move slightly but not alot. Do you hear cracking in the transom? Is there cracks you can see?

Look at the red wire. To the left of the wire is a CRACK!!! It ran from one side to the other. My transom was failing because of water ingress.

If the tramsom is failing then thats what needs to be fixed.
If it's not, LEAVE IT ALONE!!!

 

[Biged007]

Re: Yet another Bayliner question

Actually the transom seems to be solid but it is 26 yr.s old anyway food for thought "don't fix it if it ain't broke" Thanx

 

[Paul Ryan]

Re: Yet another Bayliner question

Yeah, I worry about things with my 20+ year old boat too...Biggest thing I have seen is water ingess...If water start getting in on bare wood. Won't be long before rot will set in. As long at the transom, stingers etc etc stay dry, their good. Also, not going over mfg HP rating. Really is wild how something can be that old and still be in good function shape.

 

[SC's Forever!]

Re: Yet another Bayliner question

Biged007.......Over the years mfg's have used just transom mounts, 3 point mounts, and 4 point mts. depending on the boat design, engine/outdrive combination/weight, balance point, and many other factors.....one type is not necessarly better or worse because of the number of support points!! Engine torque/torque roll HAS been considered in the design.....Basically..DON'T TRY to Re-Engineer what has worked very well for years.....IF you keep your present engine..keep the transom only mt. ...If you re-power with another engine..DUPLICATE the mounting method IT used!!!!