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-   -   RPMs while Surfing (http://www.wakeworld.com/forum/showthread.php?t=802158)

jaws 05-27-2014 9:53 AM

RPMs while Surfing
 
Can anyone tell me what RPMs they are at when listed and surfing? I feel like since I added my FAE i am hearing a different “sound in the motor” and what I mean by that is it’s like the FAE is effecting the performance. Maybe a slight drag. So I changed the prop because I noticed a slight bend in one of the blades and trouble getting to speed. It is a little better, but again I don’t feel 100% with it. seems like it is not running the same, but then again the last time I heard it was in October. I have a 2012 v226 supreme with the 5.7 in it. I have about 2900lbs in ballast and surf at 11mph. The rps are about 3100 -3200. Does that seem kind of high?

boardjnky4 05-27-2014 9:56 AM

RPMs sound about right. I run the same RPMs when I'm wakeboarding.

racer808 05-27-2014 10:01 AM

I am glad to hear it isn't just me! I seem to remember last year before FAE 10pmph ballasted out was bout 2,000 rpm. Now it is 3,000rpm since I put FAE on. Without all that weight wake boarding I am about the same RPM doing 22-23mph. I am altitude so I run the acme 1235.

laptom 05-27-2014 12:17 PM

Try once again without the FAE.

rallyart 05-28-2014 9:55 PM

Mine was exactly the same rpm with or without the FAE. That was quite a few years ago that I had it off.

jaws 05-29-2014 6:01 AM

I am thinking the rpms have raised since the FAE. i had 2- 4inch turned down pipes. so i am thinking that the engine is working harder to push the fumes out since the FAE is one piece?

racer808 05-29-2014 6:31 AM

Quote:

Originally Posted by jaws (Post 1878962)
I am thinking the rpms have raised since the FAE. i had 2- 4inch turned down pipes. so i am thinking that the engine is working harder to push the fumes out since the FAE is one piece?

I think so too. I over tightened two of the clamps & cannot get them loose without cutting them so it's won't be an easy thing to take off & verify. My wife says the same thing too & is always worried when we surf that the boat is working too hard running 3000 rpm.

stingreye 05-29-2014 8:00 AM

Jack, check your Z - measure again its how far down the down pipe is. If its too far down it will create too much drag because its in the center of the prop wash vs the top half of the prop wash.

Cutting stainless clamps would not be fun.

racer808 05-29-2014 7:53 PM

S.r., already went over it with Larry, z is good. Will double check just to error on the safe side.

dreamer 05-30-2014 8:28 AM

With heavy ballast you want your small block engine turning over 3000 rpm's. Think of driving up a steep hill, your car kicks down a gear to get the engine in a more efficient rpm range for the load.

rugbyballa3 05-30-2014 10:31 AM

if it change my rpms it wasnt very much. and it might be deceving cause you only hear the motor and dont really hear the exhaust anymore. but i havent noticed anything out of the ordinary on mine. i run 4k - 5k lbs surfing. 2012 axis a22. all in all best stereo upgrade i could do. and i dont smell the exhaust well surfing anymore. neighbors like it when i run at night. they dont hear any more at 1 am.


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