What should I do at this point?

« **on:** May 22, 2016, 11:49:22 PM »

I tore the 460 that came with my boat I recently purchased apart today to see what I was working with and what needed done...and I got my answer but not that answer I wanted. The motor had sat outside along with my boat for about two years with no cover and no carb on it so water ran down the intake and right into a few of the cylinders. I pulled the valve covers and the heads were pretty rusted inside and need work, the. I pulled the heads and checked out the cylinders, honed some of the rust out to see if the pits Would diminish Atleast a little bit and they didn't of course...so then I pull the pan and remove all the Pistons and notice that only a few are floating easily on the wrist pins and all the others are stiff as hell and then come to find out the cylinders were already .040 over so I doubt .060 is going to clean them up enough to be reliable for a few years. At this point I'm 11/10 butthurt and ready to throw it in the trash but wait it gets better...I take the crank out and it had already been turned once and the bearings were DESTROYED . Same goes with the cam bearings! So this isn't entirely a rant, I would like to get a few opinions from the vets on here on wether I should stick with this motor (basically just a block now) and have all the machining done and get this thing running and have faith in the motor or just go buy a 454 for a grand off craigslist and throw it in the boat and call it good for the season? Thanks for any and all opinions! They all help

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« **Reply #1 on:** May 23, 2016, 05:58:05 AM »

If you're thinking of just picking up an engine to get you back on the water, why go through all the work of changing it over to a different brand?

I've got a friend that has a complete 460 he just pulled out of a rotting hull that he will probably let go for around $1500.

PM me your number and I'll pass it on to him, if you're interested.

« **Reply #2 on:** May 23, 2016, 09:36:03 PM »

Not sure how much it's going to be in total cost which we would be the most beneficial. Kind of wanted a project for now I guess I don't know if I'm looking for a full turnkey motor yet thank you though! Any other thoughts?

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« **Reply #3 on:** May 23, 2016, 10:07:41 PM »

Personally check online local Craigslist try to find a salvageable block crank etc that you can overhaul. You can probably do a budget build to get you on the water and last you a few years

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« **Reply #4 on:** May 23, 2016, 10:16:42 PM »

Do those heads say C8VE ?
Hard to read in the picture.

I'd build that engine, fords are a bit pricey to build compared to a Chevy but I think they're more reliable when done right.

That way your not looking for all the mounts also.

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« **Reply #5 on:** May 23, 2016, 11:58:40 PM »

I bought a motor off here a few months back knowing it needed a rebuild. Once I tore it apart I asked what did I get myself into. Same deal motor sat outside uncovered it was filled to the carb throat with water. Don't think the block was bored at all tho.

« **Reply #6 on:** May 24, 2016, 05:55:12 AM »

Moral is to cover your motors.water in cylinders is bad. Just sayin

« **Reply #7 on:** May 24, 2016, 07:19:53 AM »

I have heads if you're interested

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« **Reply #8 on:** May 24, 2016, 07:40:03 AM »

Choices-

-Used out of a carb'd F250, etc

-Complete used jet boat motor

-Reman pep boys type motor

-Reman Marine motor

-Ford Motorsports crate motor

-Rebuild using existing parts

Dan'l

« **Reply #9 on:** May 24, 2016, 07:52:54 AM »

Boating season is here!!! Slam an engine in and run the poop out of it. On the side you do a project of rebuilding at the same time. Bam!

« **Reply #10 on:** May 24, 2016, 08:12:46 AM »

I kinda dig ford lovers idea!

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« **Reply #11 on:** May 24, 2016, 08:49:16 AM »

Quote from: bshaw on May 22, 2016, 11:49:22 PM

I tore the 460 that came with my boat...The motor had sat outside...no carb on it so water ran down the intake and right into a few of the cylinders....the heads were pretty rusted inside...honed some of the rust out to see if the pits Would diminish....so then I pull the pan and remove all the Pistons...the wrist pins and all the others are stiff as hell and then come to find out the cylinders were already .040 over...I take the crank out and it had already been turned once and the bearings were DESTROYED. Same goes with the cam bearings!...

I would like to get a few opinions from the vets on here on wether I should stick with this motor (basically just a block now) and have all the machining done and get this thing running and have faith in the motor or just go buy a 454 for a grand off craigslist and throw it in the boat and call it good for the season? Thanks for any and all opinions! They all help

If you buy a 454 off craigslist, then you are not only buying another unknown engine but you also have to convert to the different brand power plant.

The 460 parts you have are probably all usable once properly rebuilt. Undersized crankshaft means nothing since you can bearings up to 0.060" under. heads can be bead blasted and remachined, etc. 0.060" overbore to 0.080" overbore no problem. If I were you I'd just rebuild my current engine core so that my engine will be not only an known entity but also custom built to my specs and needs.

Lastly, I have a few different long blocks going together over here if you might prefer that option. Call directly for details.

« **Reply #12 on:** May 24, 2016, 01:25:55 PM »

How much would all the machining be to have everything done that needs fixed? And is .080 really safe still? I thought .060 was kinda the limit until it had been sonic checked

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« **Reply #13 on:** May 25, 2016, 08:16:04 AM »

Quote from: bshaw on May 24, 2016, 01:25:55 PM

How much would all the machining be to have everything done that needs fixed?

From viewing pictures over the internet no-one can estimate the machining costs necessary. For a good OEM 460 500 hp jet boat build it might be a couple thousand, give or take.

Quote from: bshaw on May 24, 2016, 01:25:55 PM

And is .080 really safe still? I thought .060 was kinda the limit until it had been sonic checked

1) The number of 385 Series blocks we have sonic checked is in the triple digits.
2) When reviewing wall thickness results from our sonic check sheets, maximum overbore is estimated based on the block's expectation to support up to 1000 hp.
3) With all the blocks that we've measured and using the criteria noted above, we have come across only 2 blocks that will not go 4.44".
4) (For a 500 hp build, the two blocks in point 3 above might have been considered acceptable at 4.44")

« **Reply #14 on:** May 25, 2016, 10:25:56 AM »

Might just end up trying to salvage what I have then 👍🏻

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