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-   -   DIY Gantry Crane (https://www.offshoreonly.com/forums/general-boating-discussion/376349-diy-gantry-crane.html)

Galvez83 07-11-2022 08:15 AM

DIY Gantry Crane
 
https://cimg2.ibsrv.net/gimg/www.off...49eee9f7d5.jpg
https://cimg5.ibsrv.net/gimg/www.off...cf5cf106af.jpg
https://cimg8.ibsrv.net/gimg/www.off...f59a8d275d.jpg
With mechanic prices thru the roof i refused to pay someone $1500 to remove my engine. I work a lot and it would take more time if i did the job but to hell with it. I've removed several engines and put them together but had a different job that allowed me more personal time. Now i just flat out refused to dish out so much money to have the engine removed and installed. Did some research and built this contraption to get it done.

boostbros 07-11-2022 10:53 AM

someone post the pic of the gantry using ladders and propane tanks please

scarabman 07-11-2022 01:37 PM

I think your gutters need cleaning!:party-smiley-004:

Too Stroked 07-11-2022 01:44 PM

Nice work, but remember, you need to be able to move fore / aft and side to side as you pull each engine. How do you plan on accomplishing that?

ThisIsLivin 07-11-2022 02:06 PM

You could make a trolley that rides across the top beam with a couple of tires from HF attached to 2 steel plates through bolted with black pipe. Looks like it would work to me. What's an engine weigh, 500-600lbs?

jeff32 07-11-2022 04:05 PM

A dressed 500 efi is 900 ish pounds

Galvez83 07-11-2022 04:25 PM


Originally Posted by scarabman (Post 4838020)
I think your gutters need cleaning!:party-smiley-004:

lol its a new house to me and umongst other things that area is getting torn down. In other words HAMMER TIME!!!

Galvez83 07-11-2022 04:29 PM


Originally Posted by ThisIsLivin (Post 4838034)
You could make a trolley that rides across the top beam with a couple of tires from HF attached to 2 steel plates through bolted with black pipe. Looks like it would work to me. What's an engine weigh, 500-600lbs?

i ordered casters to put on. The casters have a weight limit of 2400lbs. My engine is currently a short block. Heads and manifolds are out already. Once going in will go in without the manifold and risers. Otherwise the room to tighten the bolts to back of the engine is nearly impossible.

bajaman 07-11-2022 05:00 PM

I did something very similar many years ago when changing out the engine in a diesel Audi I had at the time. Ended up doing a couple of friends' cars, too.

Knot 4 Me 07-12-2022 07:41 AM

Isn't that about $4K worth of wood though?! :lolhit: JK! Looks good.

Helmwurst 07-12-2022 07:48 AM

1500 buck to remove a short block?!!! F/T. Should be pretty easy to do with the exhaust and heads off.

Galvez83 07-12-2022 08:43 AM


Originally Posted by Knot 4 Me (Post 4838127)
Isn't that about $4K worth of wood though?! :lolhit: JK! Looks good.

Lol, all in about $350. Trust me i kept the receipts to tally the cost.

Galvez83 07-12-2022 08:46 AM


Originally Posted by Helmwurst (Post 4838128)
1500 buck to remove a short block?!!! F/T. Should be pretty easy to do with the exhaust and heads off.

I have done it several time and even on a fully dressed 454. That's what pissed me off with the prices of doing business in Miami. The only thing that was holding me back was my work schedule. I work from 7am to 8pm. It will take me longer than expected by i am sure as hell not dishing out 1500 to someone for such a job. Mind you, i am not dissing on marine mechanics but you can sucker someone into it, just not me.

SabrToothSqrl 07-12-2022 10:25 AM

Very nice. If I didn't have a friend with a metal one already built, this was plan B.


87MirageIntruder 07-12-2022 10:43 AM

I've been wanting to buy the Harbor Freight gantry crane for $800, and then replace the upper beam with a longer one so it can straddle a boat.

DrFeelgood 07-12-2022 11:15 AM


Originally Posted by 87MirageIntruder (Post 4838156)
I've been wanting to buy the Harbor Freight gantry crane for $800, and then replace the upper beam with a longer one so it can straddle a boat.

How long is it as is?

F-2 Speedy 07-12-2022 11:28 AM

shows 94" between the posts

https://cimg8.ibsrv.net/gimg/www.off...03404a6bda.jpg

DrFeelgood 07-12-2022 11:52 AM

Just a >bit< too narrow.

Interceptor 07-12-2022 03:34 PM


Originally Posted by F-2 Speedy (Post 4838166)


Somebody on here recently posted how they expanded the top cross rail to gain additional width.

Indy 07-12-2022 04:27 PM


Originally Posted by Interceptor (Post 4838193)
Somebody on here recently posted how they expanded the top cross rail to gain additional width.

A trip to your local steel fabricator to weld up some plates on a new I-beam would be easy and cheap. We put steel i-beams in our house remodels all the time, wouldn't take much at all for a fabricator.

Twin O/B Sonic 07-12-2022 05:25 PM

I’ve been watching them for a couple yrs.

What I see is, needs width and height.

A while back I was watching salvage yards that specialize in demoing shuttered factories.
Tons of gantrys.

I think they were going for $1500-ish for 3k lb capacity.

I wanted two.

Then you have to get them home and reassemble them.

And when you’re done w/them, where do you store them??

In my case, shop floor is concrete where casters roll.
Outside is gravel….., not so much.

I bought a harbor freight chain winch to pull the 454 out of my 25’ Checkmate Convincor and build a gantry like in this post to do it but was shocked to see that my motor lift/cherry picker would do it!

W/the boom fully extended and motor stripped to short block, it popped right out!

I was shocked.

Gantrys are cool if you have concrete all around your shop.



Originally Posted by Interceptor (Post 4838193)
Somebody on here recently posted how they expanded the top cross rail to gain additional width.


F-2 Speedy 07-12-2022 05:27 PM


Originally Posted by Twin O/B Sonic (Post 4838202)
I’ve been watching them for a couple yrs.

What I see is, needs width and height.

A while back I was watching salvage yards that specialize in demoing shuttered factories.
Tons of gantrys.

I think they were going for $1500-ish for 3k lb capacity.

I wanted two.

Then you have to get them home and reassemble them.

And when you’re done w/them, where do you store them??

In my case, shop floor is concrete where casters roll.
Outside is gravel….., not so much.

I bought a harbor freight chain winch to pull the 454 out of my 25’ Checkmate Convincor and build a gantry like in this post to do it but was shocked to see that my motor lift/cherry picker would do it!

W/the boom fully extended and motor stripped to short block, it popped right out!

I was shocked.

Gantrys are cool if you have concrete all around your shop.

14'6" walls help to


xlint89 07-12-2022 08:08 PM

I saw a guy use a Bobcat to remove the engine from his Formula.

Noles1 07-12-2022 08:50 PM


Originally Posted by boostbros (Post 4837987)
someone post the pic of the gantry using ladders and propane tanks please

https://cimg0.ibsrv.net/gimg/www.off...0dc0d2361.jpeg
Per your request, This the one you like better boostbros?

Knot 4 Me 07-13-2022 07:17 AM

^^^^^^^ Oh lord...

TomZ 07-13-2022 07:39 AM


Originally Posted by Noles1 (Post 4838215)
https://cimg0.ibsrv.net/gimg/www.off...0dc0d2361.jpeg
Per your request, This the one you like better boostbros?

There it is!

TomZ 07-13-2022 07:55 AM


Originally Posted by F-2 Speedy (Post 4838166)

I've got this one and it works with my 311. I have to drop the guide poles and raise the hoist to its max height. I store it on the side of my backyard under some trees... it's out of the way enough where the Mrs doesn't complain about it.

There's enough meat at the top that you could drill different attachment points to get a couple inches each side. A replacement I-beam isn't out of reach either if more of a span is needed.

If I needed to use in a professional capacity, I'd get something better. But for the occasional engine yanking session, not a bad investment.

Helmwurst 07-13-2022 08:15 AM

You likely have to extend it also if your boat is on a trailer.

87MirageIntruder 07-13-2022 10:05 AM

My neighbor has been helping me with his Kubota, but I'd like to rig up a gantry crane so I can be self reliant.

https://cimg2.ibsrv.net/gimg/www.off...6b5fb5a302.jpg

scippy 07-13-2022 11:52 PM

I just pulled my 572 port engine with chain attached to a front loader ........you can articulate it anyway you want similar to he picture above.....


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