how much Horsepower?
#31
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Originally posted by MIKEHTMSR24
10:1 comp
Alum. Edelbrock RPM heads (ported and polished with 2.3's and 1.9's)
Straight up cam timing
Port matched Team G intake with a Barry Grant 850 flowing 930 cfm 78's & PV- 88's no PV.
HP was 683 @ 5684 and torque was 676 @ 4700
Wet CMI headers
The only thing I have done is went down in fuel 2 jet sizes all the way around.
250 hours on motor
10:1 comp
Alum. Edelbrock RPM heads (ported and polished with 2.3's and 1.9's)
Straight up cam timing
Port matched Team G intake with a Barry Grant 850 flowing 930 cfm 78's & PV- 88's no PV.
HP was 683 @ 5684 and torque was 676 @ 4700
Wet CMI headers
The only thing I have done is went down in fuel 2 jet sizes all the way around.
250 hours on motor
This is proof about your cam and Contary to Dennis you can't tune out this much speed unless something is very very off in the motor I doubt your guy could have done this ,,,but p.m. me if I can help
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#33
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Originally posted by Geeter-B
Was the test done in salt water? Are your speed in salt water? Just wondering if 10 mph can be seen with satl water and finding the right combo of prop,camshaft,etc?
Was the test done in salt water? Are your speed in salt water? Just wondering if 10 mph can be seen with satl water and finding the right combo of prop,camshaft,etc?
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We will try to make a pm run today with the changes
(smaller diamiter) wheels.
Boat had a full tank last trial also. Will need to add more fuel to be fair on this run. 180 gallons when full.
8lbs per gallon =1440 lbs
Heck ill try it empty
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#35
arneson-industries.com
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Those boats will run 100; I believe the first powerboat test was performed at Lake Mead of all places.
If you are so concerned with this 600 hp, have the engines dyno'd, if there was a lie in the article, it was that the engines probably were more only 600 hp.
Fuel is way closer to 6 lbs/gal than 8.
Be prepared for some serious chine walking at 100! The strakes are so low that they entire boat is out of the water and they all chine walk, regardless of who drives it, what power you have, or what outdrive you use.
If you are so concerned with this 600 hp, have the engines dyno'd, if there was a lie in the article, it was that the engines probably were more only 600 hp.
Fuel is way closer to 6 lbs/gal than 8.
Be prepared for some serious chine walking at 100! The strakes are so low that they entire boat is out of the water and they all chine walk, regardless of who drives it, what power you have, or what outdrive you use.
#37
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when we painted the boat we had it off trailer on jacks
while I was on the creeper D/A ing the bottom I checked the squareness where the trailer bunks support it and towards the
keel there were no noticeable arcs or hooks apparent.
Then again there was quite a bit of Black gel coat in my eyes.
and the fear of the V slipping off the jacks and cutting me inhalf.
while I was on the creeper D/A ing the bottom I checked the squareness where the trailer bunks support it and towards the
keel there were no noticeable arcs or hooks apparent.
Then again there was quite a bit of Black gel coat in my eyes.
and the fear of the V slipping off the jacks and cutting me inhalf.
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#38
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My old boat, a 26' Mirage was only a couple years older than yours. Spent all it's life on a bunk type trailer. I could check with the boat on the trailer and found a slight hook in the last foot. I used a 4' straight edge. Jacking the back of the boat off the trailer and sanding the hook out, really woke up my hull. There was a lot less wetted surface with out the hook pushing the bow down. In 4' I had about an 1/8" gap above the straight edge.
Good luck
Good luck
#39
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you mentioned that you DA'd the bottom during repaint. Did you go back over with a board or block. If you just used the DA, you may have rippled the critical wetted area. For your goal, every little bit will make a difference. Also there was no mentioned as to what were water conditions on your run.
#40
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Finaly we were able to run another test run friday pm.
The test run produced 91 mph. @5300rpm
Sea conditions were calm. Slight chop
these changes were made
props cut back 1/2 inch diamiter
jet sizes increased 4 sizes
Timing at 32 degrees locked
Compression was even all cylinders 155 to 160.
High speed shut down then do a plug reading still reveals
a white plug.
A set of AFR's 335.s with a bigger cam sounds tempting.
Thanks to everyone who contributed to this thread.
Caveman
The test run produced 91 mph. @5300rpm
Sea conditions were calm. Slight chop
these changes were made
props cut back 1/2 inch diamiter
jet sizes increased 4 sizes
Timing at 32 degrees locked
Compression was even all cylinders 155 to 160.
High speed shut down then do a plug reading still reveals
a white plug.
A set of AFR's 335.s with a bigger cam sounds tempting.
Thanks to everyone who contributed to this thread.
Caveman
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