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I have a 1999 crownline 225 br, 454 mpi, with duo prop with
I have a 1999 crownline 225 br , 454 mpi, with duo prop with 28 pitch , only getting 50mph , (85km) on gps on my phone but rpm is 4800 seems like I could get up to 5500 or 6000 rpm . would like 65-70m… read more
Ted G.
Ted G.
Rigger, Diagnostician
Vocational, Technical or Trade Scho
747 satisfied customers
I am looking to buy a replacement prop for my 1992 Starcraft
I am looking to buy a replacement prop for my 1992 Starcraft Euro 191 boat which has a Mercruiser I/O 4.3/V6 Alpha One motor - I don't have the owners manual and I am lost on what would be the closest… read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,577 satisfied customers
I am repowering Bayliner 2755. Found almost new MCM 5.0 MPI
I am repowering Bayliner 2755. Found almost new MCM 5.0 MPI (w/Bravo1 ECM). Which drive would be the best choice? Bravo 1 or Bravo 2? And what gear ratio, to get the most of this engine? What kind of … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,399 satisfied customers
I have a 2006 Mercruiser 350 MPI with Bravo III drive and SS
I have a 2006 Mercruiser 350 MPI with Bravo III drive and SS Prop 20 degree pitch. The boat is a Cruisecraft 700 executive (planing hull and weight of Boat and Motor is 2800kgs). Had motor serviced 6 … read more
Tan
Tan
MerCruiser Certified Technician
Certified Marine Technician
11,399 satisfied customers
hi, Im ralph and i have a 1988 formula 26 pc . it orginally
hi, I'm ralph and i have a 1988 formula 26 pc . it orginally came with a bravo 1 outdrive per formula tech assist. with a 454 carb. engine. it was replaced in 1999 with a 454 merc. 0L310591 7.4 mpi in… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
i have a 350 magnum alphaXXXXXmotor with a prop labeled
i have a 350 magnum alphaXXXXXmotor with a prop labeled(NNN) NNN-NNNN40 13P..is this the right prop and is it a 16" dia? i have been told to and have ordered a solas Amita 3E 16" dia with a 13 " pitch… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have bayliner 2858(2000) with 454 7.4L mercruiser
I have bayliner 2858(2000) with 454 7.4L mercruiser engine.My max speed is 15mph and max rpms are 3000.Size of ss duo prop is 28 inches and thinking to replace the same.Any ideas of poor performance?… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I have a 1991 Volvo Penta 740 A Duo Prop. I believe it has
I have a 1991 Volvo Penta 740 A Duo Prop. I believe it has series 7 props. It has GMC 454 330 HP and the boat is a 1991 22' Cobalt. I am the original owner. Very familar with the boat. I can no longer… read more
James
James
Certified Marine Mechanic
Vocational, Technical or Trade Scho
4,094 satisfied customers
I saw a 1996 chaparral 2130 ss with a 7.4 mercruiser,bravo
I saw a 1996 chaparral 2130 ss with a 7.4 mercruiser,bravo 2 outdrive,dual stainless steel prop with extended hull for quick planning. I was told this engine over heats. What is the gas mileage? Will … read more
Noel Schembri
Noel Schembri
Marine mechanic
Diploma
1,804 satisfied customers
I just purchased a Bravo 3 complete outdrive serial # XXXXX
I just purchased a Bravo 3 complete outdrive serial # XXXXX with 220R gears. It is a 1994 model. I am hooking this up to a 1992 OMC 454, King Cobra engine that has been rebuilt, and now has 395hp and … read more
Jason
Jason
Marine Mechanic
Vocational, Technical or Trade School
19,577 satisfied customers
Volvo If a 1975 31 hatteras flybridge which had 454s was
If a 1975 31' hatteras flybridge which had 454's was replaced with twin volvo 31 b with reverse gear MS4A's will ever cruise at 18 knots. Currently the owner is running the same props which was on the… read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
Want to repower a 77 Slickcraft 255 flybridge sedan (up and
Want to repower a like new 77 Slickcraft 255 flybridge sedan (up and down helm). Current 454 (400hrs) and TRS drive (distroyed) are removed by previous owner. Would like a fresh setup. Injected big bl… read more
K. Kergan
K. Kergan
Inboard/Outboard Mechanic
Vocational, Technical or Trade Scho
1,031 satisfied customers
I have a bayliner 2556 motor cruiser, with a mercruiser D3-6Ldiesel
I have a bayliner 2556 motor cruiser, with a mercruiser D3-6Ldiesel engine with a bravo 2 leg. I can only achieve about 15 knots and a maximum of 3400RPM. Propleller and bottom have all been checked. … read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
i have74 26 trojan express cruiser,i have a 318 chrysler merc
i have74 26' trojan express cruiser,i have a 318 chrysler merc cruiser inboard won't go over 9 knots shaft is one inch, the nut is 3/4 by 10 thread what is proper pitch to get proper cruise speeds… read more
capt ron 1959
capt ron 1959
Owner/Marine Mechanic
Vocational, Technical or Trade Scho
348 satisfied customers
I have a 1992 Bayliner Cierra 2556 27 commandbridge, with
I have a 1992 Bayliner Cierra 2556 27' commandbridge, with a single Mercuiser D3-6L Diesel (180hp) . with Bravo drive The top speed I have been able to achieve is about 15kts. at 3500RPM I have been t… read more
Scott
Scott
Marine technician
Vocational, Technical or Trade Scho
543 satisfied customers
ihave a1995 sealine with ad31dp will not plane out of gear
ihave a1995 sealine with ad31dp will not plane out of gear full revs ok in gear 2000to 2500 oil in leg clean and lifted out today to clean but relativley clean of barnicles boat comes up at a n angle … read more
Captain Dave
Captain Dave
Marine Mechanic
Master's Degree
2,672 satisfied customers
which prop goes with a d3 190 i have x4 on at the monent and
which prop goes with a d3 190 i have x4 on at the monent and the boat will not plane my boat is a sealine 328. i have had x5 before this. twin engine diesel.will not get on plane i can only get 3000 r… read more
Dan Boy
Dan Boy
Amusement ride technician
High School or GED
110 satisfied customers
I have the boat listed below and wouuld like to take the 2
I have the boat listed below and wouuld like to take the 2 X AD 31 130hp Engines out and put a single Yanmar 6BY260z in and wonder if you could advise on the ratio of the drive leg, it will be a bravo… read more
Scott
Scott
Marine technician
Vocational, Technical or Trade Scho
543 satisfied customers
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Meet the Experts:

Dominick

Dominick

Marine Mechanic

1,009 satisfied customers

25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified

Ted G.

Ted G.

Rigger, Diagnostician

747 satisfied customers

40 years boating, Safe boating instruct., Offshore Race promoter, Failure Analysis, Expert Witness

John White

John White

Marine Mechanic

306 satisfied customers

11 years experience working on outboards, inboards, sterndrives & pwcs

Jason

Jason

Marine Mechanic

19,577 satisfied customers

Degree in Marine Technology. Gas and diesel marine mechanic.

Tan

Tan

MerCruiser Certified Technician

11,399 satisfied customers

40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.

Jeff G.

Jeff G.

Marine Mechanic

4,730 satisfied customers

42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance

Captain Dave

Captain Dave

Marine Mechanic

2,672 satisfied customers

USCG Licensed Captain, 20+ Years Boating, Fishing, Maintenance and Repair Experience

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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