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  1. all jet ski ignitions have rpm retard ( due to...

    all jet ski ignitions have rpm retard ( due to better exhaust I'll bet), outboards could do with it as well, once you pump up the comp and revs
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    Seaway still make this stuff when they get enough...

    Seaway still make this stuff when they get enough demand and they can keep doing it as logn as they like
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    Does the ignition work like a 49/56 3 cyl, then...

    Does the ignition work like a 49/56 3 cyl, then you have unlimited packs.
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    interesting project you have there, what the...

    interesting project you have there, what the story with the vibration?

    PS its going on a sst45 mid not a stinger as the etec has the 2 cyl bolt pattern which is completely different than the 3cyl
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    sure injection cools and slows the exhaust for...

    sure injection cools and slows the exhaust for mid range
    common on modified jet skis

    the 45 is a 45ci engine that makes 70hp at 7000 but based on 50hp at the crank before higher comp and modded...
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    yes but long exhaust is all about low end power,...

    yes but long exhaust is all about low end power, perhaps run a rotax pack as the sled guys have full access to programing an e-tec
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    Tohatsu 50D help..

    Guys i need to travel to do a job lifting the engine off for a buddy.
    I assume i can use my omc lifting tool.
    Anyone know what bolts you need?
    Thats a carby 2 stroke oil inj from 10 years ago.
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    How do I get a signed one?

    How do I get a signed one?
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    if you go down the carby route you need to make a...

    if you go down the carby route you need to make a flywheel and get a cd ignition set up under it.
    Plus the issue if the mains can gravity feed?
    I was thinking leave it as an e-tec?
    It has huge...
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    The Seaway version I just looked on the bench,...

    The Seaway version
    I just looked on the bench, the top of the lifting eyes are at the same height,
    So I will need to find a crank and flywheel to check if my guess was right or not?
    The top of the...
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    I wasnt thinking pull start

    I wasnt thinking pull start
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    race it stock, will last for years

    race it stock, will last for years
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    the current 45 cowl will go over it no problem

    the current 45 cowl will go over it no problem
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    not sure but they have big potential when you...

    not sure but they have big potential when you look at the airflow, maybe new head and twin barrel carbs?
    ( saying that a flywheel will be a problem so after market ignition or stick to e-tec)
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    the secret future for sst45 to keep it running...

    the secret future for sst45 to keep it running for the next 50 years
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    E-tec fits on sst45 mid

    yep
    bolts in same place
  17. generally more volume in there makes its lazy at...

    generally more volume in there makes its lazy at the bottom end when you run carbs?
    I can see one area to fix, your carb entry's a squared off, that's not conducive to flow
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    light and fast its always the tallest ratio....

    light and fast its always the tallest ratio.
    that means maybe less acceleration and less load carrying ability but will always mean best top speed.
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    Sticky: Hi Dick ages ago I was trying to find that...

    Hi Dick
    ages ago I was trying to find that rotary load cell kit I knew they used on Class 1 offshore boats in europe, not sure who supplied those
    but I found an old Hot rod 2013 and...
  20. Nice FYI very similar to the old Factory when...

    Nice
    FYI
    very similar to the old Factory when building OMC F1 V8's but they were a little more aggressive with 30 sec under load and 30 sec cool off up at all revs working up to 7500. that takes...
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    yep your right, I would bet one of them is wrong?

    yep your right, I would bet one of them is wrong?
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    On boats.net you get different carb part number....

    On boats.net you get different carb part number.
    I did notice the 5 digits are the same in the middle of the part number but prefix and suffix different.
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    Never heard of blocking exhaust to restrict hp....

    Never heard of blocking exhaust to restrict hp.
    Normally carb venturi size so carbs are different part number.
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    are the blocks the same part number?

    are the blocks the same part number?
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    I have been hearing boring stuff up for 40 years,...

    I have been hearing boring stuff up for 40 years,
    just tell them the finish size of the hole and thats what you are paying for.
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    Al Stokers 9 pages doc has dimensiions. I will...

    Al Stokers 9 pages doc has dimensiions.
    I will post it in a few days when i get home.
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    e-tec?

    e-tec?
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    Sticky: Where did this end up, are you still making them?

    Where did this end up, are you still making them?
  29. Perhaps rebuilding an OMC 49ci powerhead and buy...

    Perhaps rebuilding an OMC 49ci powerhead and buy mid+trim and lower from Seaway is the way to go?
    Carbs are the only thing that might to hard to find or use flat tops?
  30. did the 55 small case have the tall ratio gears...

    did the 55 small case have the tall ratio gears like the 70 ces?
  31. Can you buy a new carby 15" for a T850 from anyone?

    Can you buy a new carby 15" for a T850 from anyone?
    or is it 20" and make a new mid etc
    or try to fit a 60-70 onto to a 50D mid but what about the trim?
  32. Yes hard to believe the shaved head and custom...

    Yes hard to believe the shaved head and custom megaphone will add 10 hp and lift the peak power up to 7000
    Al Stoker told me he has had many on his dyno and thats where they all are
  33. Hi Hounddog Was there ever a spec sheet for the...

    Hi Hounddog
    Was there ever a spec sheet for the omc 45ci for t 750?
    They are 70hp at 7000 in sst45 spec which is stock porting which is faster?

    Did you get your carbon boat running?
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    The future is bright for T750

    After a successful https://apachampionship.com/ T750 race in Singapore a deal was done between the APA and our club the SPBA, to allow 2 of the race boats to remain in Singapore which will allow our...
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    Sticky: it makes more power but having the piston flat...

    it makes more power but having the piston flat against the exhaust port rather then cocked over
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    Sticky: custom 49ci race engine from OMC

    custom 49ci race engine from OMC
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    Sticky: no good I'll give ya $100 to take it away...lol...

    no good I'll give ya $100 to take it away...lol
    31M race engine
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    great offer, love to do that

    great offer, love to do that
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    Hi Ron from teh PArker thread on S&F The Div. II...

    Hi Ron from teh PArker thread on S&F
    The Div. II 2.0 liter rules say V-4 and inline 6 motors are called alternate motors and are exempt of the aforementioned rules. How much freedom are we talking...
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    yes 12 T750 boats with stock 50 3cyl tohatsu's...

    yes 12 T750 boats with stock 50 3cyl tohatsu's will be in Singapore Dec 6,7,8
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    Thanks Ron yes still in Singapore The question...

    Thanks Ron yes still in Singapore
    The question is for us here from the Port Authority, simple question but its not on any UIM or APBA doc I can find.
    We are 99% there to have T750 race on the east...
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    Race course setup info - need help

    Hi Guys

    can anyone point me to a specification for the safety clearance from race track to spectator boats?
    Has there ever been a specification posted like how fast how far type of thing?
    ...
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    if pistons are stock you add 030 to original bore...

    if pistons are stock you add 030 to original bore size
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    is the hull smooth underneath in the middle or...

    is the hull smooth underneath in the middle or does it have the join seam protruding?
    Thats an issue when raising the engine height
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    You need to check what the piston uncovers. So...

    You need to check what the piston uncovers.
    So you need to crank in a block with piston and rod
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    good question, thats very important. lots of...

    good question, thats very important.
    lots of dyno time and egt monitoring required there
    typically you lower the angle to shift the powerband up
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    are you taking of ports above the piston or below?

    are you taking of ports above the piston or below?
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    how do the ports in the piston line up? There is...

    how do the ports in the piston line up?
    There is a simple mod and thats to make a late 45 piston cut look like the old 60hp one
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    yes but only in East Malaysia

    yes but only in East Malaysia
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    where is that?

    where is that?
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