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-   -   Need engine advice N A 598 cubic inch rebuild (https://www.offshoreonly.com/forums/general-q/318685-need-engine-advice-n-598-cubic-inch-rebuild.html)

ICDEDPPL 12-31-2014 09:32 AM


Originally Posted by sutphen 30 (Post 4242206)
on some of the dyno's you guys run on,it probably is,,for others w/ more accurate ones,not so.

REALY???
The dyno we use is not accurate? How did you come to that conclusion?

vintage chromoly 12-31-2014 09:34 AM

. :food-smiley-007:

Black Baja 12-31-2014 09:39 AM


Originally Posted by sutphen 30 (Post 4242206)
on some of the dyno's you guys run on,it probably is,,for others w/ more accurate ones,not so.I just did a 600 w/ 357 afrs and got to 740hp,of course I kept the lift .675" so the valve and springs weren't getting changed every other year.and the engine idles at 800rpm.

Out of the box heads?

the mayor 12-31-2014 09:39 AM

Let's keep my education on track.
Thanks

MILD THUNDER 12-31-2014 09:40 AM


Originally Posted by sutphen 30 (Post 4242206)
on some of the dyno's you guys run on,it probably is,,for others w/ more accurate ones,not so.I just did a 600 w/ 357 afrs and got to 740hp,of course I kept the lift .675" so the valve and springs weren't getting changed every other year.and the engine idles at 800rpm.

Many marine engine builders have proven 750hp 598ci recipes. And they are NOT 10.7:1 compression. Nor do they have 800 lift cams.

So what dyno do you use? We use a DTS . who's engines are you referring to that dyno happy ?

benjen 12-31-2014 09:55 AM

The AFR 357's are their CNC Head. So, yes probably ok out of the box.

PurdueCAT 12-31-2014 10:33 AM


Originally Posted by ICDEDPPL (Post 4242223)
REALY???
The dyno we use is not accurate? How did you come to that conclusion?

I work in an engine manufacturing facility with 8 certified engine dynos capable of handling a lot more horsepower than anybody on this board is making. With that being said, I can tell you from first hand real world experience that no two dynos are the same. Even from day to day things change.

MILD THUNDER 12-31-2014 10:46 AM


Originally Posted by PurdueCAT (Post 4242252)
I work in an engine manufacturing facility with 8 certified engine dynos capable of handling a lot more horsepower than anybody on this board is making. With that being said, I can tell you from first hand real world experience that no two dynos are the same. Even from day to day things change.

I see your from Lafayette. Where do you boat around there ?

sutphen 30 12-31-2014 10:48 AM


Originally Posted by Black Baja (Post 4242228)
Out of the box heads?

they were.

Cole2534 12-31-2014 11:01 AM


Originally Posted by vintage chromoly (Post 4242224)
. :food-smiley-007:

Ya buddy, we in it now!


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