olds in a saber help?
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olds in a saber help?

  1. #1
    Horsepower sells Engines lefty's pride's Avatar
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    Exclamation olds in a saber help?

    OK so my uncle has a 19 ft saber i think, and it has a 455 olds with an in-closed engine compartment, he is running log style manifolds, now the problem he had a cyl full of water, and bent a connecting rod. now what i though happened was i think the exaust is to low in the boat , he changed to a diffrent style log a year ago and he had to buy those transome block off plates and lowered the trumpets to below the water line, i think it was OK last year because the trumpet rubbers the season before was new and this year i found that they where sucked back into the pipe, what is the min you need the riser to come above the water line?, he has a set of the taller risers on it now but i don't think there tall enough believe when i eyeballed it it looked to be about 2-3 inch above the the water line well to the plugs anyway. i either need and extra tall set of risers or convince him run the old logs he didn't like them because they were a pain to get off. the other issue i thought was time to time there was no exaust coming out of one trumpet at idle, did the olds have an exaust crossover the intake? could that be where the exaust was going? any and all your input will be very help full
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  3. #2
    Boat Nut sleekcrafter's Avatar
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    Any time the flappers suck back in is bad, it just takes a surge of water to rol over the riser, and your done. I've made several sets of HD flappers for the trumpet style tips from conveyer belt. Each instance was after water ingestion, never had poblems afterwards. Think about a steep lauch, the back of the boat is buried in water. My old Sleek would have the tips 18 inches under water, before the boat would float, never had water problems with propperly working flappers. I switched to Rex Marine internal flapper tips later on, for less maintance, and looks.
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  4. #3
    Horsepower sells Engines lefty's pride's Avatar
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    any info the the height above the water line the riser should sit to be safe?
    "Horsepower sells Engines but torque wins races."
    "winners never quit, quitters never win
    those who never win and never quit are idiots"
    "if at first you don't succeed redefine success"
    "why is there never time to do it right, but there is aways time to do it twice"

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  6. #4
    Boat Nut sleekcrafter's Avatar
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    Most tips are just at or half under the waterline when sitting.
    Last edited by sleekcrafter; 01-17-2010 at 06:49 PM.
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  7. #5
    Horsepower sells Engines lefty's pride's Avatar
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    there not the old ones where but the new ones arnt there just under the transom block off plates putting them a couple of inchs under to the top of the tip
    "Horsepower sells Engines but torque wins races."
    "winners never quit, quitters never win
    those who never win and never quit are idiots"
    "if at first you don't succeed redefine success"
    "why is there never time to do it right, but there is aways time to do it twice"

  8. #6
    Boat Nut sleekcrafter's Avatar
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    probly lower than optimal, but like I said My sleek had the tips 18 inches under, and never had any issues. Working flappers are a must.
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  9. #7
    Horsepower sells Engines lefty's pride's Avatar
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    but how high out of the water did the risers sit i know the tips can be under gust like all the ski boats but look at how high the exaust come up
    "Horsepower sells Engines but torque wins races."
    "winners never quit, quitters never win
    those who never win and never quit are idiots"
    "if at first you don't succeed redefine success"
    "why is there never time to do it right, but there is aways time to do it twice"

  10. #8
    Senior Member 74glencoe's Avatar
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    Quote Originally Posted by lefty's pride View Post
    OK so my uncle has a 19 ft saber i think, and it has a 455 olds with an in-closed engine compartment, he is running log style manifolds, now the problem he had a cyl full of water, and bent a connecting rod. now what i though happened was i think the exaust is to low in the boat , he changed to a diffrent style log a year ago and he had to buy those transome block off plates and lowered the trumpets to below the water line, i think it was OK last year because the trumpet rubbers the season before was new and this year i found that they where sucked back into the pipe, what is the min you need the riser to come above the water line?, he has a set of the taller risers on it now but i don't think there tall enough believe when i eyeballed it it looked to be about 2-3 inch above the the water line well to the plugs anyway. i either need and extra tall set of risers or convince him run the old logs he didn't like them because they were a pain to get off. the other issue i thought was time to time there was no exaust coming out of one trumpet at idle, did the olds have an exaust crossover the intake? could that be where the exaust was going? any and all your input will be very help full
    There is a crossover on the intake on the stock manifold, and the performer, performer rpm, torker for sure, and I would think on most manifolds. There are a couple threads on blocking the intake crossover here and on realoldspower.com. On the flappers I have something to throw out, when i had to run the logs I used a piece of plexiglass on top of the rubber to stiffen it up quite a bit, there is probably a better system out there but it worked well for me.
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  11. #9
    Horsepower sells Engines lefty's pride's Avatar
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    for the stiffer flappers i used on mine is rubber from a skid steer sweeper it wount fold in back wards, but if they fail i'd like some kind of fail safe
    "Horsepower sells Engines but torque wins races."
    "winners never quit, quitters never win
    those who never win and never quit are idiots"
    "if at first you don't succeed redefine success"
    "why is there never time to do it right, but there is aways time to do it twice"

  12. #10
    Senior Member 74glencoe's Avatar
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    That is alot thicker and heavier than the conveyer I used, there is one more way outside the box idea, most likely a bad one, but what about a drain hole in the primary of the log?

    will probably make it too loud, sound like an exhaust leak (which I guess it would be), and make too much heat at the hole causing the log to crack, right?
    Boating is nothing like cocaine, boating is much more addictive and results in bigger parties!

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    The cross overs on the intake are for warming the carb/choke. One side will not exit into the other. Put the old logs/risers back on, problem solved.
    No more Mr. Nice Guy !

  14. #12
    Senior Member 1975sleekcraft's Avatar
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    Default flappers

    i had one cylinder on my 455 hydrolic (full of water). mine happened when i was floating. i had a big wave crash into the rear of my boat. this was before i knew the need for flappers. i was missing one flapper on the side that hydroliced.
    i cut my flappers out of a car tire.
    they work great!!
    i used to worry about how low the ass end of my boat sits in the water. i sit on the back of my boat when floating, waves coming over the transom, i have never had the problem return!!
    look at the black line on the transom. that is the waterline!!!
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  15. #13
    Senior Member DuaneHTP's Avatar
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    Just a suggestion of caution. With a "sucked in flapper"; is there a possibility that the engine was idling too fast when the ignition was shut off and the engine diesled, (run backwards a bit)? That will cause it every time. I've seen guys drive themselves crazy with water problems, bent rods, trashed starters, water in the oil, etc. because of an engine running backwards for an instant when shut off. Incorrect timing or a hot spot can cause it too. Duane HTP
    Last edited by DuaneHTP; 01-21-2010 at 07:40 AM. Reason: SP

  16. #14
    Horsepower sells Engines lefty's pride's Avatar
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    oooooh i like it, something i did not think about, i dont know if it had done that, i do beleive i pulled them out and seen the in again even after it had not run but i may be making things up in my mind i'll add that to my thoughts for later. any ideas on no exaust comeing out of one trumpet? and did any body have a min measure ment of the exaust riser above the water to be safe? i know use the old ones but i want to know for later experances, and he wants reasons for changeing them back. he really hated the old ones
    "Horsepower sells Engines but torque wins races."
    "winners never quit, quitters never win
    those who never win and never quit are idiots"
    "if at first you don't succeed redefine success"
    "why is there never time to do it right, but there is aways time to do it twice"

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