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07-11-2011, 12:50 PM #31
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07-11-2011, 02:15 PM #32
Ralph Musser
27' Fountain Fever W/ 525SC
22' Rapid Craft W/ Evinrude 300 V8 January 2009 BOAT OF THE MONTH SOLD
24' Triton 240 Gold W/ Mercury 60
14' Royalcraft W/ Evinrude 75 father/daughter project
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07-11-2011, 02:25 PM #337000 RPM
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Well that makes sense. The exaust is open at the cavplate so there's not much exaust going around the prop. From looking at the inside of the lower I get how it works, and that is exactly how it is set up. You learn something everyday.
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07-11-2011, 06:01 PM #34
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07-13-2011, 02:23 PM #357000 RPM
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Well here it is..... I just sanded it down, gelcoated the top and sanded it smooth, rattle can primed and painted it. It came out good, not perfect but i dont really care as long as it works.
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07-13-2011, 02:26 PM #367000 RPM
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07-13-2011, 03:10 PM #37
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07-13-2011, 03:34 PM #387000 RPM
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The prop is good, I need to send it out to be worked one day. It could use more pitch and cup. I hope it works, the boat was fine before, but going slow was a pain, so I'm hoping it will help and with launch a bit. I hope to test it by at least tomorrow.
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07-13-2011, 03:51 PM #39
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07-13-2011, 07:04 PM #40
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07-13-2011, 07:15 PM #417000 RPM
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How did you add the compression? I know ou can plug the idle relief holes, and mill the heads, but then dont you have to rejet? I would like to raise the 90psi I got now...
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07-13-2011, 07:26 PM #42
Well this old 75psi commercial mullet boat motor had umpteen thousand hours on it so since we had about $50 in the motor we put 2.7 heads on it then cut them a few times till compression was up 110-120 then plugged the reliefs We wanted to go to 150 but we were worried about squish
Put yours around 130-140 it will wake it up in the mid range but you have to run 91 or better no more 87
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07-14-2011, 09:31 AM #43
Hey,check out the hydrofoil on the Allison in the buy and sell section,boats to 20' its a xr2001 carbon fiber drag boat. Note how it looks bigger on one side then the other?
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07-14-2011, 10:21 AM #447000 RPM
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The stbd side is missing the wing that comes off it. Dont know why, but i'm sure its for something. But its still UGLY!
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07-14-2011, 07:02 PM #457000 RPM
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Well I think it works great, alot better than before. I can come onto plain slow and maintain it no prob. I can jack the motor all the way up, and tuck the motor a little and take off with out cavitation, comes up right away. I need to watch it while someone else drives to actually see how it runs. So far so good.