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Hello. Does anyone know if the old school analog (needle) tachs are adjustable? AC brand gauge, mid 80's vintage. Electric, coming from the sychro. I finally got sick of the needle jumping around and replaced the cable. Smooth as silk, but 200 off. Perhaps there is an adjustment on the...

Hi. Looking for a source for the high heat exhaust blanket for a 6-71. Not the turbo cover, those are all over ebay. Just can't pin down a source for the exhaust blanket. I need 2, one for each side. Thank you.

Hi, anyone ever use any aftermarket Detroit engine parts. 671's (450hp). I'm going with all OEM liners and pistons but I could save $1K by getting aftermarket valves. OEM are $61 each vs. $18 each aftermarket. There also seems to be a bunch of different aftermarket sources. Anyone have any...

Hi. Does anyone know where I can purchase a Covington 6-71 service/shop manual (relevant to 1986ish engines) ? After a 1/2 hour or so of "googling" the only one I found was $380!

Hi, any source for heat exchangers besides Lenco? Covington 6-71's Thank you.

Does anyone know the "proper" coolant level in the tank of a Covington 671? Mine always seem to seek their own level. It is my understanding that on J&T's 1" low - hot,/ 2" low -cold, any difference with these? Just wondering where it's really "supposed" to be.

I just removed the old Halon system /auto shutdown etc... Out of my '86 41C. Are any parts of this system worth any money or should I just throw them out?

Anyone know where I can get a sending unit for my transmission gauge (Capitol)? Mike from Sams said it's matched to the original AC brand gauge and is no longer available. Normal operating pressure is 180/200 psi. All the ones available in auto parts stores only go to about 100 psi.

Hi, I tried searching the forum and really didn't find anything definitive. Has anyone tried Rain-X on their eisenglass? The bottle says not to use it on plastic. Anyone?

I’m looking for some info on battery chargers. I’ve got 2 regular wet 8D’s in the boat so I only need a unit with 2 outputs. I’ve already gone through 2 Xantrix Truecharge 40’s so I don’t want another one of those. My big question is, do I really need something that puts out 40 amps? Seems...

Hi all, I've eliminated my systems monitor long ago. All I want to do is install simple high temp alarms for the detroits. .. sources? Frankly, I've ran out of patience googling and am hoping this would be quicker. thanks.

Anyone have a source for a new or used "AC" trans pressure gauge. I'm sick of having to bang it to have it read correctly. Sams says they're no longer available. Thanks.

Hi guys looking for any advice/opinions. I've got a 41 Hat w/ 671 covington Tib's. I've got chocolate milk in my tranny, which I assume is seawater since the freshwater side is holding pressure w/my pressure tester, nor is it low on coolant. I assume this is due to a faulty trans. cooler...

I need to know how much a hynautic steering ram costs new vs. to rebuild for a 86 41 hat. The local hydraulic place wants almost $1K to rebuild it ??? I put in a call to Sams but I haven't received a return call yet. Please any info would be great.

Anyone have an opinion on the "Good" brand auto free-fall windlasses, or does anyone have a recommendation on another free fall windlass that will hold up to the weight of a 41 Hatteras. It will get used 7 -10 times a week (charter boat). I have been using another brand for several years and...

Hi, I have a Robertson AP200DL and the head unit finally took its last breath. Everything else works great. I've checked for a while to see if a used head popped up but no dice. Anyone know the interchangeability of the new Simrads to the old Robertson units?? Do they just plug in, do they...

Hi, I know there have been previous threads on this but there are just WAY too many to go through. I’m looking to cover the salon of my 41 Hat (Convertible) in the fake teak. The two names that keep coming up are plasteak and Amtico. 4 questions- First question- I’m in the Northeast, once...

Hello all, in regards to my under performing ’86 41C. 1) - Has anyone ever heard of any performance issues because of spurs? 2) - Has anyone ever had to make any exhaust modifications to the factory mid-ship/side exhausts because of excessive backpressure? If so, what were your corrective...

Hi I have a 1986 41C Series II Since the day I purchased it in 2005 I've always felt it wasn't getting out of the water enough at cruise. I do 16.5 - 18.5 knts (tide dependent) running the 450hp 671's at 2,250 rpms, at this speed she is also burning 45 gals per hour. She digs a big hole and...