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I have an Onan MDJF 15Kw genset and was wanting to see if anyone knew what the normal operating oil pressure should be? At 1800 rpms with no load it is showing just under 40 psi on the gauge. According to my manual it says it should be greater than 25 psi but doesn't say what the top range...

Below is an exhaust mixer elbows off of my starboard engine that I removed several months ago while working on one of my turbos. Obviously it has seen better days. I suspect the others are in about the same condition. At the time, I looked around for a set of replacements and was finally...

My port engine was running hot the last time I took the boat out a couple of weeks ago. To the point where the high temp alarm sounded. Since I had replaced the raw water impellers a couple of months ago I suspected it was something with the freshwater side. I pulled the thermostats to check...

Definitely!

It appears that I am going to need to rebuild one of my turbos and I'm trying to make sure that I order the right kit. It's an AiResearch M24 turbo. The plate on the backside of the compressor housing lists the Model# as TH08A64, the P/N as R5143110, and the S/N as B2186G B0604. I have not...

At least they took the bones out...

I was wondering if there was any reason that Pex piping should not be used for replacing the water lines on a boat. My 46C originally had copper water lines but over the years as those failed the previous owner(s) had patched them by splicing in sections of flexible water line. Last evening one...

I have an older 46C Hatteras with 8v71TI Detroit Diesels and Allison M20 gears. My port gear will not engage when shifted into forward. The drive oil pressure on that gear will come up to around 150 to 160 psi when the engine is first started but will drop back to around 40 to 50 psi after...

I have a 1976 46C Hatteras with 8V71TI engines that I bought about a year ago and have been doing a few repairs during that time. One of the things I noticed early on was that the cables from the emergency shut-down t-handles on the flybridge were corroded to the point that neither of them...

Ok, I never thought to look there. In this picture I can see what appears to be some numbers between the blades. Just can't quite make them out though. Guess I'll have to wait until I'm back at the boat this weekend. Thanks. At least I know where to look now.

I'm trying to get the specs for the props on my 46 Hatteras but am having no joy when I Google the numbers that are stamped into the hubs. I'm not sure if they are part #'s, serial #'s or ??? They are the only numbers that I could find on the props. Is it possible to get the specs based on these?

I'm doing a little refurbishment on an old 1976 Hatteras and in the process of taking off all the hardware in preparation for painting I bet I have accumulated enough bronze screws and bolts to cast a new bust of Andrew Jackson for the local park. The problem is that a lot of them either broke...

I've got a 1975 46C that I'm do a little refurbishment on. It has, or I should say had, a 1-1/2 copper bonding strap that ran around the flybridge, under the console and beneath the seating areas with the antennas and electronics connected to it. It is in really bad shape and is corroded...

How would I go about getting copies of the the blueprints for my 1975 46' Convertible? When I bought the boat a couple of months ago I found copies of the original blueprints in a storage compartment on the boat. Unfortunately, at some point during the last 41 years they had gotten damp and...

I have an older Onan diesel genset (Model MDJF) that's in a 46 Convertible that I recently bought. When I bought the boat a couple of months ago the previous owner had tried to run the genset for me but was not able to get it to start because the starter was too weak to crank the engine over at...

I am in the process of re-coring the cockpit deck of my 46C. When I removed the upper layer of fiberglass I noticed there were two 8-inch square steel(?) plates embedded in the core in the area roughly above the rudder stems. (Sorry, it seems that I must have deleted the pictures I took). The...

New to the forum but hoping to become a regular here soon. I'm currently looking at a Hatteras 46C Series I that's for sale here locally and was wanting to find out if it is possible to get the original specs for the boat based on the hull number. It appears to be in really good shape but it...