Page 1 of 1

Considering Another with Detroit Diesels

Posted: Thu Apr 19, 2018 11:40 pm
by Misty
Hi Guys,

Been quiet for awhile. Busy at work. My trifly continues to thrill, but an opportunity has come along to purchase with Detroit Diesels (671s I believe 315 hp turbo) that have over 2000hr but have been sitting for a couple years?

Run? Hide? What are some considerations on start up and eval? Other than the obvious, fresh fuel, new filters, etc?

I will get a diesel guy but want to hear from my people here first!

Re: Considering Another with Detroit Diesels

Posted: Fri Apr 20, 2018 6:56 am
by prowlersfish
The 671 at 315 HP or around there last a long time , 2000 hours is not a issue . If they were 450-485 HP that would be a different story . Defiantly get a Detroit guy to look at them . And to be there at start up . If he knows DD he will likely have the valve cover off before starting to make sure the rack is not sticking as it been sitting up . The 671 is a great engine . But they are noisey and are known to leak oil . They are very reliable . But Like most diesels when things break they can get pricey . Maintenance will be more too . About 5 gallons of oil per engine , impellers 100 or so . and so on .


Big question why has it been sitting up ?

Re: Considering Another with Detroit Diesels

Posted: Fri Apr 20, 2018 10:13 pm
by Misty
I know!

I always think the angles. But we will see I have a marine DD guy ($$$$$) then a super old timer RV guy who can look at it. I would almost pay more to have the old timer. We shall see.

Darn good advice. Thanks! Others feel free to add but From ur prev posts that's good enough a prod to keep scrutinizing this vessel.

Re: Considering Another with Detroit Diesels

Posted: Sat Apr 21, 2018 7:12 am
by RWS
once you've gone diesel, you'll agree

straight inboard diesel or outboard

the many marine diesel advantages makes them WORTHY of the extra effort.

RWS

Re: Considering Another with Detroit Diesels

Posted: Sat Apr 21, 2018 8:44 am
by prowlersfish
Misty wrote: Fri Apr 20, 2018 10:13 pm I know!

I always think the angles. But we will see I have a marine DD guy ($$$$$) then a super old timer RV guy who can look at it. I would almost pay more to have the old timer. We shall see.

Darn good advice. Thanks! Others feel free to add but From ur prev posts that's good enough a prod to keep scrutinizing this vessel.
Its worth looking at for sure . Getting the engines looked at maybe cost you but its better to know . While there are some more costly repairs and Maintenance Its not really a big deal in the long run . More of a heads up then trying to scare you . I have known many that have gone from gas to diesel not one has regretted it .





RWS wrote: Sat Apr 21, 2018 7:12 am once you've gone diesel, you'll agree

straight inboard diesel or outboard

the many marine diesel advantages makes them WORTHY of the extra effort.

RWS
You could have left the outboard part out :mrgreen:









There is a feeling of confidence with a diesel that's hard to describe , something you won't understand until you own one . Honestly it open new worlds to me . No fear of long runs . In 14 years and 1400 hours I have come back one 1 engine 3 times once due to a fuel pick up in the tank . I did lose a turbo 1 time . And yes I did blow one engine due to a overheat . I had lost a freeze plug that caused a complete coolant loss . A design flaw of the early HO Cummins B That they upgraded later on . Something I should had done And did not . ( I have done the other ) . This is nothing to worry about with the 671 . The 671 (below 400 hp ) is one of the most reliable engines ever made that keep on going and going . Many a work boat around here with 10s of thousands of hours on them . Not putting down the 450 to 485 hp one the still are very reliable but you won't see them get in the 10k hours .

As I keep rambling on the bottom line is this my next boat will be a diesel . Hopefully a Single engine as I find them that reliable .

Bottom line and a warning !! ONCE YOU GO DIESEL YOU WILL NEVER GO BACK .

OK I will shut up ( for now )

Re: Considering Another with Detroit Diesels

Posted: Mon Apr 30, 2018 11:44 am
by Misty
Turns out it had been sitting for ten years. Fuel pumps rusted through, bright orange bilge sludge. Only posting because I hate it when posters keep us hanging!

Re: Considering Another with Detroit Diesels

Posted: Mon Apr 30, 2018 11:56 am
by prowlersfish
Run ! Fuel pumps rusted thru ? Not a good sign Been sunk or full of water would be my guess