73 sleekcraft, 455 olds jc a h, boat rebuild thread
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73 sleekcraft, 455 olds jc a h, boat rebuild thread

  1. #1
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    Default 73 sleekcraft, 455 olds jc a h, boat rebuild thread

    hello kids, names brent and i just traded a vdrive boat with nightmare-ish problems for a simple sleek jet boat that needs a few things, and needs my own personal flavor of resto-modification

    i just want to say, that my experience with vdrives, is limited, but with my narrow experience and engineering perspective i have to say there is just too many moving parts and seals that are too expensive to replace, reverse loading and shocking the driveline, A RUBBER ENGINE COUPLER? (my transom was flexing and changing the driveline angle, blowing out repeated engine couplers, and too weak to offer worry free propulsion, there seems to be a reason why the military uses jet drives on amphibious tanks and assault boats, its simple stupid and works!

    i know lots of ppl love vdrives, and yeah they have advantages, but guys i want to build this thing and go drive it not pull the dang outdrive after every outing...
    or discover another reason to pull the whole engine and fix a 40$ part :/

    i know jets have their own problems, but to easily work on the engine and driveline, go way faster, and not worry about destroying my outdrive or prop, enabling me to cruise rivers with very little boat traffic, IM TAKING MY CHANCES WITH THE JET DRIVE AND BIG BLOCK COMBO

    the owner took the boat out for the 4th of july before we traded boats, it developed a rod knock and he turned it off, thank god...

    i want to paint it red and throw a HUGE stereo in, with lots of lights under the water inside the boat and two projector headlights for night cruising,
    i also feel like no boat is complete with out an icechest, and some sort of bbq grill or stove top burner, who wants to make sandwiches? not me... lets grill BACON!

    im doing two bench seats, the front will fold back (electric ram controlled) i have the rams laying around, and the back of the front bench will line up with the bottom of the rear bench, making the boat a giant cushion bed thing when the front bench seat lays back, so you can sleep or tan

    im also putting in 4 batteries, 1 for the engine starter and fuel pump, guages and hei, then 3 as back ups and stereo amp/ 12v cooler power im also putting two 100 amp alternators on the front of this engine, the stereo will have 4 12" subs pushing 8kw, 6 6x9" 3 way speakers pushing 3kw, and two 15" subs pushing 5kw, (these power ratings are advertised max power on the audio amps) flip out tv touchscreen stereo, gps, 2 additional screens for the rear seat occupants, and interior/underwater lighting galore.. the ice chest will be a modified system utilizing 12v coolers and a custom fit cooler in the back, the whole electrical system will allow the 3 batteries to be run down but the engine will start right up bc it has its own isolated batt, and charge up the others and go cruising

    i also would like a small simple swim platform on the back, despite the diverter and reverse/forward jet cables trying to get in the way

    the back engine cowling will be incorporated into a cushion that covers the rear engine and storage area, the cushion will be a tight fit with the sides and come to the the back seat infront of the engine, so if a huge wave comes over my low back hopefully it will wash off the sides before filling up the whole boat, just an idea...

    the owner said the jet was good, and the knock made him get towed in, i believe him after seeing the spun bearing and crank, not too messed up at all

    the jet has an aluminium impeller i believe, how much would a SS cost? and where can i get a berk book incase i have to rebuild this thing?

    Attachment 168820

    Attachment 168821

    and this is how it looks now after a days worth of cleaning and taking apart
    Attachment 168822

    Attachment 168823

    Attachment 168824

    the main bearing looks great no copper showing, the spun bearing and the one next to it doesnt look too great, but i beleive some emry cloth and a new set of rod bearings on these back two cylinders, with a new rear main will do fine, what do you guys think?

    i also want to put something buoyant in the nose so if this thing sinks i can hook the front ring and pull it to shore or something

    as far as the name, im going to name it DEATH TRAP
    after my last boating forum experience building my previous boat all i had were people posting how dangerous and dumb the whole build was,
    the boat was great but it kept blowing engine couplers and having drive issues, nothing else seemed to be malfunctioning, so after two boating seasons and not blowing up despite the awful predictions, its time to build a faster boat, with a bigger stereo, more lights, more features, with an icechest and bbq set up, and have more hours of enjoyment than the last project

    i look forward to any advise readers might have, ive done a bit of research on making the 460 rear main work for the olds 455, im looking for a source of rebuild information on this engine, i know bbf and bbc, but this guy is new to me, i plan on blocking of the fuel pump with a custom plate, adding a intake water oil cooler after the oil filter, and possibly drain type valve covers to the oil pan, along with some sort of pressure regulation system for the engine cooling water after the jet,

    hopefully i get some good info off this site, THANKS EVERYBODY
    Last edited by Brent Wolf; 07-12-2012 at 02:30 PM.

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  3. #2
    Senior Member rpm0414's Avatar
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    You forgot the jet engine drink cooler next the driver option

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    There's a guy that can help you with everything you need for your project. As a matter of fact, he's also building his own. Hopefully, you guys are close enough so you two can team up.
    His name is chasthanhburns, look him up.
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    Last edited by CarbonMonoxide; 07-15-2012 at 09:08 AM.

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    Default thanks!

    ill check into his project, ive been trying to do lots of research before i actually start building, since im still in the disassembly phase, i know the biggest problems with these boats are the high water pressure, inadequate oil system, the rope rear main seal, and the olds 455 is just an old technology motor, so problems arise from its ancient design techniques, im ok with being nice to the engine but im not about to idle all day long lol and yes i guess i do need a set of cup holders near the front

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    What boating forum were you with prior?

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    Default ok i need help guys

    i was with iboats.com even bondo was calling me crazy lol
    i was telling everyone as i dissasembled 2 auto 350 chevy gen 1's next to a mercruiser 260 (350) and not a single electrical or mechanical part differed from the auto motors, besides the cooling and exhaust.... the starter, alternator, distributor, sensors, head, block, crank, ect its all the same for those motors and everyone and their mother was telling me i was going to blow myself up, i put a 400 sbc in with all the marine water cooling stuff and also built it without steam holes bc the thermostat was a 140, i NEVER had melt down problems or fires explosions, ect just kept blowing engine couplers and no one on that site could tell me the obvious, i got so many hateful responses i opted to have my thread deleted and move on, but that was a whole boat ago and i really dont care ill just tell you its not a very nice crowd on that site

    this is what ive done so far

    take the engine out of the boat removed the interior aswell, and now im cleaning and painting engine parts

    i measured the crank, i measured 2.491 when the info ive researched says it should be 2.4993 new, so .008 wear, but the bearings look pretty fine to me, no copper, so im wondering did this engine just get put together really loose? ive heard its a good idea on these engines meant to spin past 3k for long periods of time, but still .008" on top of there already being at least like .003" - .004" clearance means the new clearance is greater than .010, which seems REALLY LOOSE to me...
    also the #8 cylinder that spun the bearing has an additional .005" gone where the rod is pushing on the compression stroke, so there seems to be .010" of an inch already for the clearance with even more where the rod is pushing on the crank, so this leaves me wondering is it possible to just put a set of bearings in or do i have to do the obvious and pull the crank out get it turned and do new bearings?

    i snapped a few pics you can barely see the difference in the rod journal

    and a valve spring retainer looks cracked, is it possible to push the piston to TDC and press the valve in to remove the little clips and swap it or do i have to pull the head? the head gaskets look good, i bought a full gasket set so either way, but the engine looks clean and fresh on the inside, seems like a shame to me that it would throw a bearing and have the valve retainer cracked before a case of blowby, the engine had ZERO blow by when i fired it up the pvc system was disconnected and i didnt see any oil smoke

    i appreciate any info that would help me, thanks guys
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  9. #7
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    Default i dont know why my first post pics didnt show

    heres all the boat pics that i have worth viewing


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  10. #8
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    Looks like a SleekCraft Monterey. Did you buy that boat near Dallas, TX? I hear ya on the iBoats guys. Lots of good info on that board but they are not that interested in performance boats.

    If you are that deep into it there is no reason to leave the heads on. Pull them and inspect them. You should read Timinators article on building an Olds. It is available in PDF from here: Many Olds guys swear by it.

    http://classiccustomboats.com/pages/practical_olds.pdf

  11. #9
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    If I'm reading this right, it sounds like your crank is already cut .010 under. No matter, that spun journal is toast, crank needs to come out and be repaired or replaced. Yes you could pressurize the cylinder and replace the one spring retainer but why? What about all the metal that's gone through the motor from the tore up bearing? Even if you had a crank to swap in there, the motor needs to come apart. You can't be seriously considering trying to patch this and run it???

    I hope you brought your asbestos under wear with you from the other sight because my guess is your in for some heat over here too. What you described in your intro is what I call a Barney boat, as in you're a "BOLT ON BARNEY" type builder. If Pep Boy's sells it, you have it either on your truck, car, boat, or tool box. Most jet boat guy's don't see the "Cool factor" in massive stereos, under water fluorescents, projection headlights, and bbq's cluttering up a nice Sleak Craft. But I say build away. If nothing else it will be entertaining.
    Last edited by ICECREAMAN; 07-17-2012 at 08:40 AM.

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    So, you're serious about this? I have a few observations...

    hello kids, names brent and i just traded a vdrive boat with nightmare-ish problems

    You traded a nightmare for a boat with an Olds... A broken Olds?



    i want to build this thing and go drive it not pull the dang outdrive after every outing...

    So, is it a V-drive, or out drive? They are two completely different systems.

    my transom was flexing and changing the driveline angle, blowing out repeated engine couplers, and too weak to offer worry free propulsion

    The transom was flexing? You do know that the driveline doesn't go through the transom, right? If your transom was flexing so much that it changed the driveline angle at the keel, you had way bigger problems and probably should have checked it out.

    A RUBBER ENGINE COUPLER?

    This wasn't reinforced with other hardware?

    go way faster, and not worry about destroying my outdrive or prop, enabling me to cruise rivers with very little boat traffic

    Faster? Jets are not necessarily faster, but not necessarily slower, it's a case by case situation. Was your v-drive/out drive powered by a Harley engine? Again, out drive?
    What does less traffic have to do with the price of crabs in Maryland?


    IM TAKING MY CHANCES WITH THE JET DRIVE AND BIG BLOCK COMBO

    Say what?


    it developed a rod knock

    And you still bought it. Ok, terrific.


    i want to paint it red

    Cool

    i also feel like no boat is complete with out an icechest

    Well, no shit.

    im also putting in 4 batteries and 2 alternators

    Lmfao. This just screams...tool

    the main bearing looks great no copper showing

    Not all bearings utilize copper

    for the olds 455, im looking for a source of rebuild information on this engine, i know bbf and bbc

    No, you don't.

    The rest is just laughable horse shit.
    Last edited by CarbonMonoxide; 07-17-2012 at 10:21 AM.

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    i like the ideas you are working with brent. the only issue i see is that there are too many for one boat. speed is inversely related to junk in the boat. you could make an awesome tow boat for shallow water and carry all your junk OR you could have a fast(er) jet boat. both only with some serious motor and hardware, but honestly it would be cheaper to build two boats. one for your speed, and one for your party.

    most the jet members here are gear heads, not to say your not, but they portray an honest old school hot rod feel. less is better unless it makes more speed.

    best of luck to you and your projects. take pictures of everything and share. out of a hundred ideas even the harshest critic will see something that will at least inspire them to improve upon. but maybe go to costco and buy some salt, the huge bag. the old saying "goes with a grain of salt" is in your future, a lot.

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    Love the pic, Carbonmonoxide...



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    Quote Originally Posted by gn7 View Post
    On second thought, you can call them anything youn like, fleece, valour, fuzzie wassies, what ever works for you.
    Quote Originally Posted by gn7 View Post

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    Default thanks

    yes got it in dallas,

    and i know that the vintage hotrod feel includes "chopping" and minimizing and speed wrenching, and ill definately build the engine fresh and right, taking plenty of care to detail the important things, but i really love loud music, and i got to have my beer, and like i said who wants to make sandwiches? lol it really wont look that different other than it being red with two bench seats, but everything else will be there and functioning, i guess i just want to be original, or i just want a few things with out compromise, either way i just want it to be better than it was before



    hello kids, names brent and i just traded a vdrive boat with nightmare-ish problems


    You traded a nightmare for a boat with an Olds... A broken Olds?

    yes, i didnt have enough money to sink into redoing the engine and transom, ontop of the OUTDRIVE alpha 1 gen 1 leaking and breaking all the time



    i want to build this thing and go drive it not pull the dang outdrive after every outing...

    So, is it a V-drive, or out drive? They are two completely different systems.

    OK SORRY I HAD AN OUTDRIVE

    my transom was flexing and changing the driveline angle, blowing out repeated engine couplers, and too weak to offer worry free propulsion

    The transom was flexing? You do know that the driveline doesn't go through the transom, right? If your transom was flexing so much that it changed the driveline angle at the keel, you had way bigger problems and probably should have checked it out.

    yea, exactly why i got rid of it, im looking for simple worry free propulsion, and yea buddy the gimbal bearing sets the shaft angle, and the gibal housing is on the transom, as soon as your gimbal housing or transom, or both, has flexed a few degrees your putting stress on your pos rubber coupler and after a few tanks of gas its BLOWN, i bought a new one checked alignment had a boat shop look at it, when it blew out the last time i traded, and im happy, i like the boat, it WILL GO FASTER, and ill make sure to post plenty of pictures so you can see it

    A RUBBER ENGINE COUPLER?

    This wasn't reinforced with other hardware?

    LIKE WHAT KIND OF HARDWARE? i love to modify things, but why dont you take a look at a mercruiser 260 engine coupler, two aluminium pieces joined with a rubber filler, yea i was going to fill it with aluminium, and make it never break, but then your splines will wear out, and youll just break stuff in the outdrive, i already shredded a lower unit shaft and engine coupler, its just a weak POS


    go way faster, and not worry about destroying my outdrive or prop, enabling me to cruise rivers with very little boat traffic

    Faster? Jets are not necessarily faster, but not necessarily slower, it's a case by case situation. Was your v-drive/out drive powered by a Harley engine? Again, out drive?
    What does less traffic have to do with the price of crabs in Maryland?

    yes the shallow draft and small boat equal faster buddy, i know jets are not as efficient as a prop in the water at low speeds, do i care? NO its a simple design and im sticking to it ive had enough with outdrives, go buy one and have fun with it and i bet less traffic makes the crabs cheaper....





    IM TAKING MY CHANCES WITH THE JET DRIVE AND BIG BLOCK COMBO

    Say what?

    YOU READ IT, put it into context and use the surrounding words to understand


    it developed a rod knock

    And you still bought it. Ok, terrific.


    didnt buy, traded away my other problems for new ones, problems im capable of solving, i just wanted something different trust me my boat i traded away was no jewel lol


    i want to paint it red

    Cool

    yes very cool, and the best part is when i spray paint the engine red, its worth 5hp



    i also feel like no boat is complete with out an icechest

    Well, no shit.

    glad you agree


    im also putting in 4 batteries and 2 alternators

    Lmfao. This just screams...tool

    OK GO AHEAD AND SAY WHAT YOU WANT BUT ILL JUST TURN UP THE STEREO AND GO TO MY 12V ICE CHEST FOR A BEER, if you keep b*tching then you can go buy your own beer, since you probly have something to say about what ever i threw in the icechest lol




    the main bearing looks great no copper showing

    Not all bearings utilize copper

    well the rod next to the spun one has some copper showing, these definately have copper and only the spun and next to it show it.....


    for the olds 455, im looking for a source of rebuild information on this engine, i know bbf and bbc

    No, you don't.


    thing is buddy, you dont know ME, i have a bronco ive swapped a 460 5speed bw1356 and 1 ton axles, i do all mechanical work i can by myself so it saves me money and i dont pay some grease monkey to mess it up. im a junior mechanical engineering student at the university of oklahoma
    i really dont feel the need to justify the fact i know bbf and bbc, i have clearances and part numbers in the back of my head, and bore and stroke numbers for the big block and small block families, i know the differences between the blocks and even the "folklore" attached to each, for instance the last sbc 400 i build was the 509 block, i could tell you all the regular myths about steam holes and 2 bolt vs 4 bolt mains, and i have two great examples of each in my shop as we type, i really dont care what you THINK you MIGHT know about me or my project

    The rest is just laughable horse shit.

    i wouldnt completely dissagree but im kind of getting the angry boat forum guy vibe from you today? who or what took a SH*T in your wheaties buddy?




    to the other comments providing info to help me, thank you, i will be looking into each and ill post what i accomplish!

    i guess ill send the crank off to the machine shop

    i guess ill pull the heads aswell

    im in for a complete overhaul i guess

    good thing i bought a complete gasket set

    as far as cutting up the hull for a bbq grill, dont worry about that ill show you a trick or two and the hull wont be damaged

    and as far as the stereo and tv and other "creature" comforts, do you really want to knock on the project bc its not build to go as fast as possible? if i go 50mph-75 across the water ill be VERY HAPPY with that, along with a boat full of girls and all the booze they can throw back, all the rap music they can drop it to, lol and ill be able to have a beer and watch a movie or music videos if i want

    even my friends call me tool lol it doesnt phase me

    ps i dont care about spell check or the fact my ADHD is obvious, have a great day kiddos
    Last edited by Brent Wolf; 07-17-2012 at 11:20 AM.

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    I don't know, I guess I'm more of a purist when it comes to this stuff. Not that new radical ideas aren't innovative and exciting...but you're ideas are more like the Tijuana taxi puked on shag carpet dingle ball mexi-hula girl on the dash bull balls hanging from the cleat everything that a redneck could buy at Kragen stick on shit.
    Looking forward to it.

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