psi

Hey Jim....Thanks alot, Im sure as hell gonna try to make it work... You and your Family have a great Holiday Season as well and ill see ya next year at LOTO....Cant wait!!

@HabanaJoe....Thanks for taking my mod to the turbine housing into such consideration....All opinions are welcome and I will definitely keep in mind everything you have written and try to do everything to make it work....Annealing is definitely a great idea!! Thanks again....Have a great holiday..

HabanaJoe

You to my friend, i want a ride when I come down!!!

psi

Sounds good!!

psi

Finally got the Turbine housing completed. Next step I will pressure check it for leaks, then bolt it all back together, plumb it and start the engine up. First I will start it up on the hose on land and see how everything reacts...

Thanks,
Brendan

Happy New Year O.S.O!!!

cougarman

These are not welded to the turbo, there is about a 1/2 inch air gap between the water jacket ( Shields ) and the turbo's.

So the water is not pulling heat away from the turbo.
However the shields are protecting you (body) form the heat along with any other elements that may come in contact with them.

They work well and have worked well for years.
There is a couple tabs welded on them so they can be bolted or un bolted easily.

Once the engine is shut down you will hear them boil a little bit after a good run,...
Personally I wouldn't mind a secondary electric water pump with a thermo couple so after you shut the engines down it would cycle the water through the shield as needed while you enjoying yourself.

Jon

cougarman

FYI,......for what it's worth I was told by Carson Brummett you will loose about 50 hp with a fully water jacketed turbo like you just welded up.

If your not familiar with Carson's products, he owns all the Gentry stuff,....same as Chief engines uses also.

In the the big picture a 50 hp loss is not that big of a deal.


Jon

psi

Hey Jon, I appreciate the pictures and the input. Those shields are definitely another great idea....I understand about the power loss, but just like everything else in the Marine engine world, I guess once the water cooled exhaust is incorporated into anyones engine program the power losses from a water cooled exhaust are just accepted! All the Gentry stuff incorporates the same basic theory in watercooling the turbine housings but they are just a one piece casted unit, correct?? Just like the Mercury Turbine hoiusings also??

I dont plan on changing anything whatsoever and going to test with the same boost and see what Boost and MPH #'s im able to get outta her. Many are saying that I might loose boost as well....Im just Curious myself to see exactly what happens...Hopefully in about another 2 weeks I can test...

Thanks,
Brendan

cougarman

Yes Gentry and Mercury Turbos are cast with the water jackets.

Not so sure you will loose boost......

But depending what compression ratio you have
it might play a factor in getting on plane just due to lack of heat in the turbo.

Then again depends what RPM you start making boost at too?

Either way,.....you learn by doing as your doing.


Jon

psi

Thanks Again Jon for your time and input, greatly appreciated and yea ive been learning a bunch in the last few years with my Turbocharged project. Ill give full details on on what I will encounter with the new exhaust set up and post up results with pics also..

Thanks Again,
Brendan

cliff_m_b

@ cougarman

"These are not welded to the turbo, there is about a 1/2 inch air gap between the water jacket ( Shields ) and the turbo's."

Could you please tell me more about these such as who makes them and the cost?

Thank you,
Cliff