not enough rpm,s [Archive]

CHEETER-JOE

06-24-2002, 06:01 PM

OK, HERE IS THE PROBLEM....BRAND NEW 24 CHEETAH TUNNEL, 6.2 377 MPI, BRAVO 1 WITH A 23P FOUR BLADE MERCURY REVOLUTION PROP. AT WOT, MY R'S WILL NOT EXCEED 3000, TOP SPEED OF 50-51 MPH. WITH THE BOAT OUT OF THE WATER, IT WILL CHOKE AT ABOUT 3300-3500 RPM. ALL OTHER CHEETAH'S WITH THE SAME SET-UP WILL DO APPROX 65 MPH AND 4800-4900 RPM.
ALL FLUID LEVELS ARE GOOD.
THROTTLE OPEN'S ALL THE WAY.
TRIM WORKS GREAT.
ALL WIRES LOOK GOOD.
I AM SURE THIS WILL BE A WARRANTY ISSUE, BUT ANY INFO IS GREATLY WELCOME.
THANKS, JOEY

Hotcrusader76

06-25-2002, 06:25 AM

Originally posted by CHEETER-JOE:
OK, HERE IS THE PROBLEM....BRAND NEW 24 CHEETAH TUNNEL, 6.2 377 MPI, BRAVO 1 WITH A 23P FOUR BLADE MERCURY REVOLUTION PROP. AT WOT, MY R'S WILL NOT EXCEED 3000, TOP SPEED OF 50-51 MPH. WITH THE BOAT OUT OF THE WATER, IT WILL CHOKE AT ABOUT 3300-3500 RPM. ALL OTHER CHEETAH'S WITH THE SAME SET-UP WILL DO APPROX 65 MPH AND 4800-4900 RPM.
ALL FLUID LEVELS ARE GOOD.
THROTTLE OPEN'S ALL THE WAY.
TRIM WORKS GREAT.
ALL WIRES LOOK GOOD.
I AM SURE THIS WILL BE A WARRANTY ISSUE, BUT ANY INFO IS GREATLY WELCOME.
THANKS, JOEY
Sounds like you need to Jet higher on the carburetor. What type of carburetor are you running?
If you have a Holley, there is a little more potential left in your motor set-up. You should be at least turning 4K or higher. It isn't like you have an OLDS or something.
Drop me a line if you need some help.
Thanks
Ty Lofstrom
TPC Racing
sales@tpcracing.com

SUPERCREWJOHN

06-25-2002, 07:32 AM

377 are EFI guys..no carbs on that stroker..
Sounds like the engine is a lemon to me. I say go back to Cheetah and demand a new one.. http://free.***boat.net/ubb/tongue.gif

Hotcrusader76

06-25-2002, 08:22 AM

Originally posted by SUPERCREWJOHN:
377 are EFI guys..no carbs on that stroker..
Sounds like the engine is a lemon to me. I say go back to Cheetah and demand a new one.. http://free.***boat.net/ubb/tongue.gif
Thanks for the info bro! Yeah I would say return it...EFI !!!! Should be pushing more RPM's!

FASTERDAMITT

06-25-2002, 02:18 PM

Decide if you want to check your tachometer yourself or take it back to mfg. If it's adjusted correctly, take back to cheetah!