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About LinkBacksI have heard from more than 1 person that jet boats like engines in the general size of 500CI and that anything much larger than that can make the boat go slower? can this be true? I would think the bigger, the better.
CI
I have heard from more than 1 person that jet boats like engines in the general size of 500CI and that anything much larger than that can make the boat go slower? can this be true? I would think the bigger, the better.
sounds like those guys are scared to go fast.Originally Posted by Master Sergeant
Cubic inches
Bigger is better. Right now it is not uncommon for us to build a larger cubic inch engine with low compression. 566, 572, and a 598 all come to mind.
Why low compression? How low?
My 565 is almost out of the machine shop, I sure hope the daytona will like it!!
Travis
I like my women like I like my boats......Fast and ready to get wet at all times!!
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We build the engines with low compression so that you can use 91 octane fuel.
I'm kind of curious to know who told you this. Can I assume it is something you heard at CFW on Father's Day?
Some guys in Arizona. It makes sense on a larger scale. Eventually the size of an engine would limit rpm.
Only reason i see to limiting CI size is if you are planning on running a class that calls for limited CI.
FILTHY FEW
A guy we race with runs a Sonny's semi hemi in on 09 GTO body, 892 CI and he goes through the lights at 7600rpm.... It makes 2180 Naturaly aspirated! We ran an all aluminum 632 from Steve Schmidt in the dragster and would shift it at 7300 and through the lights at 7500...
Engine size is not going to limit the rpm like you think, how much rpm are you looking for?
Travis
Last edited by TwinTurbo540; 06-24-2010 at 02:45 PM.
I like my women like I like my boats......Fast and ready to get wet at all times!!
Not much, my 489 is turning my A impeller at 6K so even with the extra HP the RPMs would not be high.
Different strokes for different folks. A good friend of mine used to tell me that a chainsaw stlye motor will ET better than a long stroke deal just cause of the imediate rpm's at the hit. Seems like theres alot of different setups and motor combos that run really good now days.
My 540 tt spins a aaa 4900@ 104mph
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