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Topic Review (Newest First)

  • 09-14-2012, 12:25 AM
    PCE680
    Quote Originally Posted by bp298 View Post
    hey gn, here is the golden opportunity you have been waiting for. free money!!! can't help but wonder if any of the rumormongers will step up... should be a good weekend to see if any of these things last "all day long"... maybe for an extra $1000, they'd show somebody the dyno sheet... maybe...


    http://www.socaljetboats.com/boat-racing/san-diego-$500-challenge/
    Heard it was a 572.
  • 09-11-2012, 01:34 PM
    bp298

    Hey gn....

    Quote Originally Posted by bp298 View Post
    big m is way overkill for what you intend to do. nothing wrong with that, just is. very easy to get 700 reliable hp using a bowtie. a good friend of mine built a 482 11 years ago, just using a 4bolt mk iv. single carbed deal. flogged that thing mercilously on the river and track for 10 years. made 700hp pushing a 19' hallet to mid 90s on the clocks. won many races, championships, won the 11 second bracket at red bluff as well as the world finals with it. the ultimate sleeper with thru hull exhaust - can't even see the engine over the gunnel. after all that beating, a year and a half ago the thing -finally- spun a bearing. now, this same engine drives away from every boat in the cj field with a single 850cfm carb...
    hey gn, here is the golden opportunity you have been waiting for. free money!!! can't help but wonder if any of the rumormongers will step up... should be a good weekend to see if any of these things last "all day long"... maybe for an extra $1000, they'd show somebody the dyno sheet... maybe...


    http://www.socaljetboats.com/boat-racing/san-diego-$500-challenge/
  • 09-07-2012, 03:46 PM
    Hass828
    Quote Originally Posted by gn7 View Post
    It really depends on what your doing with boat as much as anything. You read about guys saying I beat on my boat hard, I run the dog shit out of it. Then some guy bgoes by in a 28 ft Daytona with it on the wood, has been for 10 minutes before you saw him, and will be for another 10 after he passes you. Now who is REALLY running the dog shit out of their stuff. Might give you an idea why Merc motors are built the way they are.


    Want to what it really takes to make an engine LIVE at 6500, read Steelcomps thread on Edno's engine.

    I could tell you what inside one of my GN deals, and we spin them up to 7200, with spurts to 7500. But I don't really call those LIVING. More like surviving. They all have their day coming.
    Exactly! From the time you first start that new engine up, the clock starts ticking. Every one of them is "going away" on some level. Just some much faster than others.
    Heres a good subject that might stir up some conversation.
    Just how long do you run a set of eagle rods in an engine that puts out 800hp-6500rpms? What if its 1000hp-7200rpms? What about Oliver Billets? Same question about Cranks? Eagle to Bryant? Pistons? CP-J&E? When do you say "its time to sell thet rotating assembly and buy new? What about a 2000hp engine?
    OR do you just replace the rod bolts, have everything checked-replace the weak links and go another round and hope it lives ?
  • 09-07-2012, 03:40 PM
    ptc
    Quote Originally Posted by bp298 View Post
    all true. the thing is, the term "all day long" is an overused exageration. which is what gn is taking exception with. it implies that you'll go out and mat the thing for many sustained hours. the reality is that it's highly unlikely a garage assembled $10k-$15k engine will include all the high end components necessary to live for multiple hours sustained at 700+hp. building a reliable 700+hp engine to cruise and run well with occassional wot blasts is one thing. keeping it pinned "all day long" is another. the enduro would be a great proving ground for it, and that's only 3 hours long...
    I've seen a dodge slant 6 that ran "all day long, WOT" with no oil and no water in it either!!! We used to TEST the engines in junk yard cars to see how long they'd last... just for fun to watch them blow up. The quickest "blowers" were always the SBC's of any size 283-350... the chev straight 6ers were long time runners, but that slant 6 couldnt be beat! (all with no oil, no water)

    (yea I know not much worth in a boat but just thought I'd throw that out there...)
  • 09-07-2012, 02:28 PM
    gn7
    Quote Originally Posted by Widetrack View Post
    I would like to know what it takes to keep an engine alive at 6500? I'm getting my parts and pieces together now and would like to only buy once!
    It really depends on what your doing with boat as much as anything. You read about guys saying I beat on my boat hard, I run the dog shit out of it. Then some guy bgoes by in a 28 ft Daytona with it on the wood, has been for 10 minutes before you saw him, and will be for another 10 after he passes you. Now who is REALLY running the dog shit out of their stuff. Might give you an idea why Merc motors are built the way they are.


    Want to what it really takes to make an engine LIVE at 6500, read Steelcomps thread on Edno's engine.

    I could tell you what inside one of my GN deals, and we spin them up to 7200, with spurts to 7500. But I don't really call those LIVING. More like surviving. They all have their day coming.



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  • 09-07-2012, 02:19 PM
    TNYoungblood
    Quote Originally Posted by Widetrack View Post
    I would like to know what it takes to keep an engine alive at 6500? I'm getting my parts and pieces together now and would like to only buy once!


    WT you just fishin for something, you already know the answer to that question
  • 09-07-2012, 02:15 PM
    Widetrack
    Quote Originally Posted by gn7 View Post
    When I think RELIABILITY, I think Mercury Racing. Now if Merc makes 565 HP with their 533 CID pump gas deal at 5400, I figure you have a real good plan on how to make an additional 135HP with RELIABILITY.

    I am getting ready to put together a 540 with some pretty good stuff to drop in a 27 ft deep V. I would be the last person to tell you I am shooting to 700HP. But then, its a tad easier to keep the pedal mashed in a 27ft deep V than a small jet, and 6500 is a tad high in my RELIABILITY book. I've seen first hand what it takes to keep an engine alive at 6500, and its not all in the crank and rods!
    I would like to know what it takes to keep an engine alive at 6500? I'm getting my parts and pieces together now and would like to only buy once!
  • 09-07-2012, 01:52 PM
    thatguy
    Quote Originally Posted by PS&B1 View Post
    I know what you meant.... I also meant NO disrespect! It was just funny to me!
    It's all good. Hey, I'm a funny guy!
  • 09-07-2012, 12:50 PM
    PS&B1
    Quote Originally Posted by thatguy View Post
    It means I had no core, meaning part of the cost was for a block and all other core related parts.....

    I have the utmost respect for the racers and engine builders on here! You guys do it day in and day out and KNOW your stuff, I have picked up so much valuable info from you guys!

    BUT, you are not the only people who build engines.
    Can I build a GN engine? Hell no!!
    I wouldn't even know where to start.
    But I know hobbyist who ARE more than capable, just go to any points race and take a look.

    So while MOST of us can not match what you guys do on a daily basis, a LOT of us can take a budget, build 700 HP, stick it in a boat, AND drive it onto the trailer at the end of the day!

    Carry on, I'm learning stuff in every one of these threads!
    I know what you meant.... I also meant NO disrespect! It was just funny to me!
  • 09-07-2012, 12:32 PM
    thatguy
    Quote Originally Posted by bp298 View Post
    all true. the thing is, the term "all day long" is an overused exageration. which is what gn is taking exception with. it implies that you'll go out and mat the thing for many sustained hours. the reality is that it's highly unlikely a garage assembled $10k-$15k engine will include all the high end components necessary to live for multiple hours sustained at 700+hp. building a reliable 700+hp engine to cruise and run well with occassional wot blasts is one thing. keeping it pinned "all day long" is another. the enduro would be a great proving ground for it, and that's only 3 hours long...
    Fair enough!
    And you are absolutely correct.
    I'll be more careful how I choose my words in the future!

    To me, all day long means I can run 10 miles or so to the bridge on I-5, race a couple jokers along the way, fuel up at a Marina, do a little fishing and MAYBE grab a "nooner" in a secluded cove, then peg it for that last 5-10 minute WOT run to the trailer and still make the Outback for a steak before it gets too dark!
  • 09-07-2012, 12:21 PM
    bp298
    Quote Originally Posted by thatguy View Post
    It means I had no core, meaning part of the cost was for a block and all other core related parts.....

    I have the utmost respect for the racers and engine builders on here! You guys do it day in and day out and KNOW your stuff, I have picked up so much valuable info from you guys!

    BUT, you are not the only people who build engines.
    Can I build a GN engine? Hell no!!
    I wouldn't even know where to start.
    But I know hobbyist who ARE more than capable, just go to any points race and take a look.

    So while MOST of us can not match what you guys do on a daily basis, a LOT of us can take a budget, build 700 HP, stick it in a boat, AND drive it onto the trailer at the end of the day!

    Carry on, I'm learning stuff in every one of these threads!

    all true. the thing is, the term "all day long" is an overused exageration. which is what gn is taking exception with. it implies that you'll go out and mat the thing for many sustained hours. the reality is that it's highly unlikely a garage assembled $10k-$15k engine will include all the high end components necessary to live for multiple hours sustained at 700+hp. building a reliable 700+hp engine to cruise and run well with occassional wot blasts is one thing. keeping it pinned "all day long" is another. the enduro would be a great proving ground for it, and that's only 3 hours long...
  • 09-07-2012, 11:02 AM
    thatguy
    Quote Originally Posted by PS&B1 View Post
    It's from scratch!
    It means I had no core, meaning part of the cost was for a block and all other core related parts.....

    I have the utmost respect for the racers and engine builders on here! You guys do it day in and day out and KNOW your stuff, I have picked up so much valuable info from you guys!

    BUT, you are not the only people who build engines.
    Can I build a GN engine? Hell no!!
    I wouldn't even know where to start.
    But I know hobbyist who ARE more than capable, just go to any points race and take a look.

    So while MOST of us can not match what you guys do on a daily basis, a LOT of us can take a budget, build 700 HP, stick it in a boat, AND drive it onto the trailer at the end of the day!

    Carry on, I'm learning stuff in every one of these threads!
  • 09-07-2012, 09:27 AM
    PS&B1
    Quote Originally Posted by jimclauss View Post
    All day long???
    It's from scratch!
  • 09-06-2012, 10:48 PM
    gn7
    Quote Originally Posted by 22HotKt View Post
    The motor heads didn't ask what the boat is worth
    $14k motor into a 35 year old jet boat???
    How do you feel about a 25-30,000 engine in a 35 year old V drive?



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