Raw water Shower Heads

[Top Hatt Craig]

While changing the hoses at our 1978 J&T 6-71N Shower Heads I see the inside surfaces are heavily corroded. I tried to see the business end with a small mechanics mirror but could not. We are not having any cooling issues at this time. Our Heads are the 90 degree bolt-on model and J&T has them (now in stainless) for $1175.00 ea. I've been searching the archives here and there's not much on Shower Heads getting replaced. We're still newbies and welcome any thoughts, thanks Craig

[Cricket]

How about a picture? If they're the full water jacket style 39 years is a long time, if they're the type with insulated blanket and just a water shower head 39 years is also probably a long time too. J&T is buying them from somebody and probably adding at least 50%, you might want to call some of the exhaust manufacturers to compare. I prefer the ones with the hard coating for the hot section.

[Glory]

Marine manifold, in Farmingdale, NY, made many of the J & T exhaust parts
. Might be able to save a few $$.

[motoryacht lover]

I just had mine replaced in my 1995 boat. I was told I could go a little longer but elected not to. If you are comfortable spending the money I would do it.

[cpp]

I am also a newbe to the Detroit Diesel 671N's. What are the shower heads you are speaking of? Their purpose.
Thanks,
Chris

[Cricket]

The showerhead is on the exhaust hose connection side of the exhaust "riser" ( or elbow), it's where raw water is injected to cool the exhaust gas. Basically 3 styles, insulated hardcoat or water jacketed or insulated with blanket. The insulated elbows just have the water entering the "shower head" on the end. Not sure what the manifold end/connection outlet on a 671N looks like, the 2 elbows in the photos would attach to a turbo, just need to make sure to get an exact match.

exhaustelbow.jpgexhaustelbowjacketed.jpgexhaustelbowblanket.jpg