supercharged 25 outlaw prop size ?
03-29-2008 | 04:44 PM
#21
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Joined: Apr 2002
Posts: 339
Likes: 0
From: montvale,nj
you may have to change the pulley on the blower on the boat the cmi e tops flow very well also a 250 is a little small for a 540 my motor came of the dyno it had 7 lbs in the boat only 3-4 lbs i had to play with the pulley and then i had to readjust the carb your e topps might flow better then the dyno headers
04-14-2008 | 05:04 PM
#23
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Joined: Dec 2000
Posts: 6,283
Likes: 1
From: EASTON MA.
stock speedo with low water pickup heres the numbers with a non labbed 28 bravo blade.
32 mph @ 2600 rpm (Plain)
51 mph @ 3500 rpm
62 mph @ 4000 rpm
74 mph @ 4500 rpm
83 mph @ 5100 rpm
Note: Above numbers motor was about 4 hrs old, no chop fresh water like glass boat was stuck to the water, my higher speeds were after motor was broken in and there was a little chop maybe trimmed a liitle different ???.So my drive ratio must be 1:36,how do i figure out my ratio.
32 mph @ 2600 rpm (Plain)
51 mph @ 3500 rpm
62 mph @ 4000 rpm
74 mph @ 4500 rpm
83 mph @ 5100 rpm
Note: Above numbers motor was about 4 hrs old, no chop fresh water like glass boat was stuck to the water, my higher speeds were after motor was broken in and there was a little chop maybe trimmed a liitle different ???.So my drive ratio must be 1:36,how do i figure out my ratio.
