Hi guys:
My new Indmar 5.7 with Holley 4-barrel runs great in general, but if I let the boat idle in real choppy water (like in a beam sea) it starts to idle rough and can even stall. It doesn't do this on smooth water so the only reason I can think of is that fuel is sloshing around inside...
Hi guys. I've been reading stuff on the 'Net about alternator wiring, but there's still something I don't understand. There's a little red wire that seems to be called "battery sense" which gets connected to Batt +, and then there's a little purple wire that gets Batt + whenever the ignition...
I just bought a new Indmar 5.7 engine, which I'm going to put in my '77 Luhrs 28' (see thread in Resto section for photos). Anyway I notice the engine didn't come with an oil cooler. Do some Mercruiser 5.7's run without it?
I'm thinking cooler oil is always a good idea, so I might...
Hi guys!
On my Luhrs 28' the original transom exhaust tubes/flappers are exactly halfway below the waterline, when the boat is at rest. Why? Is that to quiet the exhaust? If so I don't really think it works because when I'm going along at any decent speed the entire exhaust tubes are out...
Hi Guys:
I have a 1977 Luhrs 28' fiberglass cabin cruiser that I'm going to repower with a Mercruiser 5.7 (350). The question is whether to go 2-barrel or 4-barrel carb.
Will the 4 barrel just make a higher max. HP? My understanding is they would both have the same fuel economy up until...
Has anyone ever used an electric raw water pump instead of engine-driven? I'm thinking that would have an advantage in that it could be located in an easy-to-access place and a complete spare could be carried. That way if it fails at sea it could be swapped out in 10 minutes or so.
The...
Hi Guys:
Some of you may have seen my thread in the Resto section, about putting a GM 6.2 diesel V8 in a Luhrs 28. Here's my question: I can think of 2 ways to install the engine/tranny/V-drive and I'm wondering which is best.
A) Bolt the tranny/V-drive up to the engine on the wood pallet...
I have a Sherwood G7B typical rubber impeller pump on my GM 6.2 Diesel V8, and I'm thinking of putting a pressure gauge just downstream of the pump to aid in diagnosing any future problems. My question is what pressure range should the gauge have? I'm thinking something like 0-30psi but I'm...
I'm wondering if I get stopped for a little inspection by the Coast Guard, what hoses have to be USCG approved? For instance I'm going to have oil hoses going from the engine to/from the oil cooler, and another set of hoses going to/from the remote dual oil filters. Hot oil is going to be...
Hi Guys:
I'm putting a GM 6.2 diesel V8 engine in my old Luhrs cabin cruiser, and I'm wondering if I have the right plan of attack on my raw water system. The order of components I have in mind is:
- Raw water in through scoop-strainer thru-hull (1.25")
- Strainer (1.25")
- Sherwood G7...
Hi Guys. I'm wondering what material plumbing fittings I should use for all my raw water connections. (seacock, strainer in/out, oil cooler in/out, tranny oil cooler in/out, heat exchanger, etc.) I'm actually leaning towards plastic. I can get glass-filled nylon fittings that are very...
Hi guys:
I'm mostly over in the Resto section, posting about putting a GM 6.2 diesel in my old Luhrs 28 footer. My question tonight is about how to manage the 2 batteries. Unlike most of you I need both batteries connected to start my engine. But what I'm wondering is what do I run on...
Hi Guys:
On the diesel engine that's going to go in my boat (eventually) it has a throttle return spring on the injection pump lever. But I'm thinking with the Morse control the cable pushes the throttle back to idle position, unlike in a car where you want the spring to return it to idle...
I've done the inside work patching over a bunch of defunct thru-hull holes on my old Luhrs and I'm about to start on the outside of those same areas. What I'm wondering is, can I just do the Epoxy/biax, let cure, sand smooth and slap on the bottom paint? Or does the Gelcoat really add another...
Hi guys. Some of you may have seen my thread in the Resto section about installing a GM 6.2 diesel engine in my old Luhrs 28'. I'm going to freshwater cool the engine with a heat exhanger, but I have a question about the exhaust. There are 2 ways to go:
A) Fresh water to the manifolds and...