Dyno Sheets
01-15-2009, 10:38 PM
#42
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what about if we look at it the other way, what would the 750 guys want an 850 boat to do to run with them?
the DW is back up and running after taking a swim in KW. Looking to take on all challengers this year.
the DW is back up and running after taking a swim in KW. Looking to take on all challengers this year.
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01-16-2009, 09:46 AM
#44
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the motors should last a full season. springs should be checked often to see if all the closed spring pressures are the same (easiest way to find a broken spring or inner spring). the springs are the weakest link.
the "restricter" would possible bring the motors closer but you would need to put these engines on a dyno and see how they react to the restricter. just restricting airflow with the same size restricter will not bring all the motors down to the same hp. the blower motors and a motor with more cubic inch will produce more torque. torque is somewhat based off cubic inch, so you can only make so much torque per cu. in. no matter what compression ratio or cam. forced induction is really the only other way to increase torque, like using a blower.
lowering the rpm limit would help save the valvetrain but a 7600 rpm isn't a unreasonable limit for these motors. we are talking about race motors in a race boat.
lambo's spin 8600
nascar 9500
the "restricter" would possible bring the motors closer but you would need to put these engines on a dyno and see how they react to the restricter. just restricting airflow with the same size restricter will not bring all the motors down to the same hp. the blower motors and a motor with more cubic inch will produce more torque. torque is somewhat based off cubic inch, so you can only make so much torque per cu. in. no matter what compression ratio or cam. forced induction is really the only other way to increase torque, like using a blower.
lowering the rpm limit would help save the valvetrain but a 7600 rpm isn't a unreasonable limit for these motors. we are talking about race motors in a race boat.
lambo's spin 8600
nascar 9500
01-16-2009, 11:02 AM
#45
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Sean i would let them run and work with the restrictor later..i want SUPERCAT to allow Mercury to use what they want if they want to run...This Mercury only deal is stupid...Catlite class is great for a class like that...Everybody shouild be allowed to play...Remember Mercury was willing to build the Supercat motor again..Lets just run them again together...Sean Key west was weird for the 850s...WHM never ran so good and u guys really never ran that bad...we just need to keep doing it till we refine the package...
bobbyb your welcome anytime..get a hold of me if u need anything...scotty hows Fla...it was minus 11 this morning here...
bobbyb your welcome anytime..get a hold of me if u need anything...scotty hows Fla...it was minus 11 this morning here...
Last edited by byrideroffshore; 01-16-2009 at 11:05 AM.
