a good prop for a pig scarab 28'
07-17-2003, 04:19 PM
#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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07-17-2003, 08:48 PM
#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.
07-18-2003, 01:33 AM
#16
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Re: a good prop for a pig scarab 28'
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
07-18-2003, 05:50 PM
#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.
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....
If it aint broke .... I can break it....
07-18-2003, 08:16 PM
#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.
07-18-2003, 09:52 PM
#20
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