Specs for 1973 28 sport

[alp3luhrs]

I have a 1973 28 sedan and am trying find any information I can on the power and prop that would have been on the boat originally. It has been repowered and has had other modifications and I would like to restore it to original.

[inland_boatman]

I just got a 1973 Luhrs 28 myself, which I think is all original. Single screw, 318 Chrysler, closed cooling. Anything else I learn I'll post here if it helps. I've only had her a day, still cleaning out, but there's lots of publications scattered all over the cabin, maybe even the original book is in there somewhere.

[dunakin 28]

I have had a 1973 marlboro 280 with single 225hp 318 cid with a 17 x 13 L.H. prop for years

[NoGin]

I am currently looking at a 1975 28 Sedan Fly Bridge with a single 318. I tend to think this engine may be underpowered for this sized boat. What do you guys think? I have not yet gone out on the boat yet so I do not know first hand.

[dunakin 28]

Well she is not ever going to fly but a nice cruse speed of 10 knots and at 4200 rpm she will run 15 knots. but for her size respectable and comfortable running 3000 to 3200 for 8 to 10 hours:001_cool:

[7228sedan]

I have a 72 28 sedan bridge with a 7.4L Merc & 1.5:1 ratio V drive. I had a hard time getting specs on this boat. I sent a note to Luhrs looking to confirm things like dry weight LOA, original motor specs etc. I was informed that the boat was built by Bangor Punta Co. Luhr told me that their 28 flybridge boat of similar vintage had Chrysler 318 or 360 with 1.5:1 paragon V drives as well. I did confirm through various searches LOA 28.0 Beam 11' 2" Draft 2'8" Weight 11,500. Per the 2008 Power Boat guide; th eboat would cruise at 18 knots with twin 318's. I just took ownership of mine and I also do not know what to expect.

[Douglas Fairchild]

I would not assume Luhrs propped boat properly. Find out max RPM of engine. With boat fully loaded se if boat will reach that RPM. If it does not you are over propped and damage to engine(s) will result. I do not know where you are but if you are in Northeast try www.accutechmarine.com. They are prop specialists.