on-line source for Cummins 4BT wet exhaust elbow

Carteret - thanks for the links! Did you use the 4" one, for about $152.00? On what engine?

I must say those prices are much less than the couple of aftermarket / specialized wet elbows that I have looked into, which ranged from about $800 - 1100.
Not sure how they compare for longevity, but I would likely take my chances for that price difference.
It doesn't show in the pictures, but is there an internal water jacket / inner pipe that keeps the water from going back into the manifold?? I assume that the water inlet does not inject the water directly into the exhasut where it enters, correct?

Did you connect yours right to the turbo, or use any kind of other dry riser pipe ahead of it?

 

Hey Northeaster, I used the one on the bottom of the page. When I bought it they were $200. I noticed that the price is starting to creep up. The engine I have is the 6.5 V8. The wet elbow I had on the engine previous lasted 14 years. These are wet with a inner jacket so they will not bleed back if installed correctly. Mine connects direct to the turbo and is fastened with the V clamp that is shown in the other link. The 4 and 5 inch clamps are not easy to find. The larger clamps are easier to get ahold off because of so many diesel engines in the truck market. The folks at Peninsular are easy to talk to. I do recommend installing a exhaust surge tube below the wet elbow. A surge tube will prevent water intrusion from backing down or a strong stern sea. I built the one on my boat out of marine FRP exhaust pipe. Feel free to pm me if you have any questions.

 

Great info - thanks again.
Mine is only (I believe - haven't measured yet) a 3" outlet on the turbo, as it is only a 3.9L Cummins. Still, I would rig an adapter of some sort up, to be able to use such a good valued part. Anyway, still have to build the hull first, or at least get a good start on it, and then I will look more seriously at the options. Nice to get some good info now though.

 

Seaboard Marine www.sbmar.com

Northeaster,

get on Seaboard Marine's website...www.sbmar.com.

read up on Tony's Tips, particularly about "marine exhaust design".

At the same time you can read and learn about your Cummins 4BT/BTA.

btw, Tony stocks the Cummins mixers for your 4 banger.

Regards, Bill D

 

yes, I have been on their site, and red most of Tony's tips on exhaust and other topics. It is full of great info. I think I will hopld off for a while until the boat takes shape and see what my space / measurements allow for.

Thanks for all of the great advice and links.