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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
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Originally Posted by tony stamis
(Post 2500706)
pic of baja
Looks great! |
Originally Posted by rod
(Post 2504102)
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. |
thanks for all the info guy's i have decided to exchange the 18" dana tabs with 24" and try a 28" labbed bravo1 see where this takes me ill keep ya posted after i try it.
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