a good prop for a pig scarab 28'
#12
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I am Heading to the boat now. The prop that I am running is a Older Merc prop that they don't make any more. I cant remember the model off the top of my head . I believe it was made for use on O/B's. I have two of them that I am borrowing . 25 P and a 26 P I am currently running the 25 at 5300 but I have a few things I still Have to do to the motor. I am not getting any water to the inter cooler at WOT. I am only running 4 PSI of boost and I want 6. I have the timing set at 28 and it was designed to run at 30 and the 26 prop has to be labed. When this is all done I hope to see high 70's .I will keep you posted on my results when I GPS her when I am finished. I just wont GPS her till I am all finished. But I know the boat is running close to or at 75 now. When I get in tonight or in the morning I will tell you what prop I have. The correct prop on this hull is everything.
Paul
Paul
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#15
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HEY HOT BOAT ,YOU HAVE NEVER SEEN MY BOAT HOW DO YOU KNOW HOW FAST I AM RUNNING? OR WHAT PROP. I AM RUNNING?SEE YOUR POST #10 ????????????????????? P.S. I USED TO RUN ABOUT 75 MPH WITH A STOCK 500HP A FEW YEARS AGO.
Last edited by 28 SCARAB; 07-17-2003 at 09:02 PM.
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Originally posted by homan
I'm having a hard time finding a prop that gives me speed and rpm the slug is a 1988 28' scarab excel before messing with the bravo drive,rpm's were 5400 with a 23p mirage I put on an Imco 2" shortie but now cavitate badly with the mirage. I tried a 4 blade Powertech 25p rpm is high 3's and a 23p powertech 4 blade at 4200 rpm speed is unknown but it doesn't seem anything near 70 my gps crapped out. Boat has somewhere around 500-550 hp. Any suggestions would be gladly appreciated
I'm having a hard time finding a prop that gives me speed and rpm the slug is a 1988 28' scarab excel before messing with the bravo drive,rpm's were 5400 with a 23p mirage I put on an Imco 2" shortie but now cavitate badly with the mirage. I tried a 4 blade Powertech 25p rpm is high 3's and a 23p powertech 4 blade at 4200 rpm speed is unknown but it doesn't seem anything near 70 my gps crapped out. Boat has somewhere around 500-550 hp. Any suggestions would be gladly appreciated
#17
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28 Scarab I thought that would get your attention......... Was it you I talked with on the phone last year and told me what motor configuration they had but wouldn't tell me what prop they were running at the time like it was a big secret.
If it wasn't Please accept my apologies.
Personally I get a feeling of self gratitude by being able to share my experience's so that someone might benefit from them.
If you would like to share what HP , Prop, Speed and RPM your running now and past configurations maybe we can all learn something here.
I have talked with a few people with this boat that had big power and had problems with finding the correct prop or trying to get over the 70 MPH mark.
![Roll Eyes (Sarcastic)](/forums/images/smilies/rolleyes.gif)
If it wasn't Please accept my apologies.
Personally I get a feeling of self gratitude by being able to share my experience's so that someone might benefit from them.
If you would like to share what HP , Prop, Speed and RPM your running now and past configurations maybe we can all learn something here.
I have talked with a few people with this boat that had big power and had problems with finding the correct prop or trying to get over the 70 MPH mark.
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If it aint broke .... I can break it....
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#19
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SCARAB 28 YOU MAY BE RIGHT. Paul no big secret as you say. I run a Hydromotive 27p reworked by Bronson Hill hp.is 720 Boost7.5 5500-5600 rpm if you recall I called you and told you I had some props, at the time you could test last summer if you wanted to. Why we run the hydro. is the river is not like a lake as you know and we feel the boat handles better and is safe then the other props that we tested. AS far as me helping others I will and have gone out of my way to help in the past.!!
Last edited by 28 SCARAB; 07-20-2003 at 07:28 AM.
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