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I have tried searching and cannot find an answer. Due to F150 Corrosion and a massive repair bill we opted to repower with new to us 150 HPDI's. The boat had 13.75x19P Yamaha SWSII props on it when we bought the boat and the new to us motors came with 15.25x17's that was rigged on a 25'...

I had Boat US before GEICO bought them. Never had a claim and after 7 years or so the rate went though the roof, 20-30% increase in 1 year if I remember right. Switched to Progressive, rates were more in line to what I was perviously paying with Boat US. They have the "Sign and Glide" towing...

Great motors with proper maintenance like anything else. Clean fuel system usually solves 99% of their "issues", and anyone with a little mechanical ability can usually handle that themselves. 1000 hours would not bother me on one with good compression and a motor/boat that looks well cared...

From what I understand the exhaust passage is dry, water is introduced lower in the mid section. When I had my powerhead off one motor and scoped the other my worst corrosion was where there would only be combustion gases. The second picture I posted is looking up the powerhead from the bottom...

This link is one of the research papers I found when looking into this a few months back, I mainly read the abstract and conclusions and did not dive too deep into the paper itself. I agree it doesn't make sense on why one motor would be effected and another not with twins. Mine were very...

Thats what I read and am hoping, have have had a lot of OX66's, these will be my first HPDI's. Motors are 2003's with 280hrs on them. I know low hours are sometimes worse than high. Sold the F150's for $3k and bought the HDPI's for $6500 with rigging. HPDI owner was completely refitting boat...

We just bought a 1997 Islander with 2007 F150's. We looked at the whole package with rose colored glasses due to the price we pre negotiated. Motors had 560 hours on them. When we took the boat out it wasn't hitting top RPMs, but I blamed the props. When winterizing I dropped the lower unit...

My father and I have boat AAD, seems like every few years we move onto something else for one reason or another. In the last 10-12 years we have had at least 10 different boats with 5 being Gradys which have proven to be our favorite. I don't mind getting my hands dirty mechanically and our...

My family has had a cottage in Mashpee for 10 years. The fishing in the sound may not be as good as the Bay side, but there is a lot more boating. Mashpee's town ramps are well maintained and you can usually always find a parking spot even on busy days. With the town sticker you can park...

I posted earlier about some corrosion problems in the twin F150's on our boat. I dropped one of the Powerheads off at a welding shop to see if they can repair it. If that doesn't work I need to make a decision on replacing the Powerheads, or considering selling the motors as-is for someone...

Where was the corrosion on the head? If the welding shop can't do the repair we are looking at 2 new Powerheads.

We just bought the boat the end of this season, so not sure on engine mounting. We paid a fair enough price where the money we need to put into them I think we will not be upside-down in the package, but it still hurts. I just scoped the other motor and it looks like there is a hole there too...

Great, thanks for the info. This boat has 13.75 x 19P and I think it is over propped. The one good run we had on it we barely got 5000rpm's. Also I discovered some corrosion problems on both motors, one with an exhaust leak, I posted some photos in another post. I am getting ready to pull...

We bought a boat with twin 2007 Yamaha F150's with 560 hours. I was not too concerned with the corrosion since the 150's didn't seem effected. When going over the motors better we noticed a lot of exhaust buildup on the lower cowling. We pulled the lower unit to find corrosion inside. I was not...

We just sold a 1999 272 with intentions of upgrading to a 282 or Marlin in a few years. In the mean time we found a great price on an Islander that we will use until then. The 1999 and up 272 should be the same from the ruble down, bother with he extended running surface etc. The interior...

There is a writeup somewhere where someone abandoned the in tank macerator in place and added an external one with a y valve through the pump out port. I think there was one specific to a 272 Sailfish I saw somewhere but this link is the same idea...

Well I sold my 1999 272 Sailfish this spring due to a newborn and figured it would not get too much use. I planned on just using my fathers 180 Sportsman for a few years until I would upgrade to a newer Sailfish or Marlin. We did not remain boatels as long as we anticipated, we came across a...

Our '99 Sailfish had a bunk trailer. We do our own maintenance and the bunk trailer made painting the bottom a chore. Boat was too heavy to deadman off the trailer onto stands, might have got it off, we were worried about back on. Also before the ramp we use was redone it was difficult to...

I sold my 272 Sailfish this year and we are considering a Gulfstream for a few years before we move into a newer Sailfish or a Marlin. A Marlin came for sale local for a great price and we just missed out on it, but its more boat than we need right now so probably for the best (I'm telling...

I second your thoughts on THT. There were a few posts I got walked all over there and this page everyone has been more than helpful and friendly. I will resort to the other page when needed for mechanical advised through searches, but GreatGrady is always my first stop.