Minnesota Classic Glastron Forum

General Category => General Discussion => Topic started by: Hyperacme on November 06, 2018, 10:37:21 AM

Title: Mercruiser weights
Post by: Hyperacme on November 06, 2018, 10:37:21 AM

I assumed Glastron's Mercruiser weights were with drive, but after doing some searching found that wasn't the case.
Looks like Glastron lists motor and transom assembly only.

Guessing a 350 / Alpha ready to roll would be closer to 1150 to 1200 lbs.
Seem reasonable ?

Mercury Remanufacturing spec's
3.0L TKS (carb) 135 HP = 567 lbs.
4.3L 4V (carb) 225 HP = 784 lbs.
357 Alpha 4V (carb) 275 HP = 871 lbs.
350 MPI 300 HP = 932 lbs.

Alpha 1 - Generation 2 Transom Assembly = 125 lbs.

Alpha = 85 lbs. 
B-1 = 125 lbs.
B-2 = 137 lbs.
B-3 = 148 lbs.
Alpha one Gen 2 Bare drive Shipping Weight: 110 lbs.

Battery = 50 lbs.

Mercruiser Trim Pump = 15 lbs.

SS prop = 10 lbs.

Title: Re: Mercruiser weights
Post by: Plugcheck on November 06, 2018, 10:43:05 AM

Can I assume the weight difference between merc 260 and omc 260 are the exhaust manifolds?  Since they are both Chevy 350's.   I can attest a bravo 1 is plenty heavier than an alpha 1.

Title: Re: Mercruiser weights
Post by: Jason on November 06, 2018, 12:02:21 PM

Interesting. Helps explain why my boats seemed to have some extra weight.

The OMC's also had petty big motor mounts as they included trim cylinders in them.

Title: Re: Mercruiser weights
Post by: Hyperacme on November 06, 2018, 02:29:07 PM

On Mercruiser's  the transom assembly includes the trim/tilt cylinders, also think that includes power steering.
So adding at least 150 lbs. to Glastron's claims, plus add some for fluids.

Guessing OMC & Volvo had different transom assembly's and T&T systems, plus manifolds ..

While doing searches for motor weights, found a near 100 lbs. difference between 350's (MPI, 2V, 4V, 305 ci.,)
Numbers I listed were off Mercury's site.

Why is a Ford 460 only 850 lbs. ?

Title: Re: Mercruiser weights
Post by: fireman24mn on November 06, 2018, 02:38:33 PM

The big block Ford stuff was mainly if not all Jets and most if not all had aluminum manifolds. Plus whole jet assembly weights about as much as just a drive.

Title: Re: Mercruiser weights
Post by: Plugcheck on November 07, 2018, 07:45:24 AM

     Ford 460 is only 850lbs?  I'd swear the block and heads together weigh that.    To say that it weighs less than a SBC is hard to believe. 

Title: Re: Mercruiser weights
Post by: Hyperacme on November 07, 2018, 10:04:28 AM

Little searching .. Berkeley Jet's weigh about 85 lbs. to 125 lbs. depending on model.


Ford 460 .. In a forum, some guy pulled one out of his boat and weigh it, so number seem right.
Hard to believe …