Duaneās Exhaust Job
Here is a custom exhaust job we did and how it all went together…
The customer wanted to be proactive because his existing exhaust system was not doing the right job because it was allowing water back thru the turbo and wanted to be sure the factory elbow had not failed due to āMarine Ageā..
He contacted me for some advice and sent a few pics… I told him the only way to know what has been going on is an inspection of the turbo exhaust outletā¦ā¦ā¦.
Builderās exhaust system using the factory 90 degree mixer
Builderās exhaust system using the factory 90 degree mixer (looking aft)
The all important āInside the Turbo Peekā
Although it was obvious that saltwater had made it up to the turbo a few times over the years, overall, considering the age and āno-riser designā of the factory system, the turbo was not too bad.
But since the customer could see water had been there and the factory elbow was well up in itās years, he wanted to go new and add some safety for down the road.
Although this looked quite straight forward as to a job, actually it presented quite a challenge… Normally in a case like this I would make a simple riser and just point it to a point higher up in the lift muffler and then just modify an input to it (move it to a better location) so I could eliminate any elbows and work around any angles.
Small but not easy to deal with offset angle
But this install had a couple of slight offsets and not much distance to work with… In the end, what really made it work out was the use of a Rubber 45 degree elbow at the bottom, and a hump hose at the topāTogether, the two of them allowed just enough ātweakingā for a perfect line-up without have anything under too much strainā¦..Like always, we always use Rectorseal #5 on all connections and multiple hose clamps staggered 180 degrees apart for uniform clamping pressures.
I had sent the owner some āstick drawingsā showing the measurements I needed to mock-up his engine to muffler relationships. From there, we just built it on the shop floor.
The finished install says it all, plus the engine is now SAFE!