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Re: Siezed low-time neglected turbocharger

PostPosted: Fri Jun 15, 2018 12:32 am
by wlarson861
after running the starter with out firing the engine you should see some oil pressure. Cool off the starter motor and top off the oil to compensate for filling the oil galleys and oil cooler. You should see a little higher oil pressure. The fact that you are seeing some pressure shows the pump is primed and working. On start up the pressure should come up to the normal range. I ran 50 psi in cruise with the turbo. I also had a mechanical oil pressure gauge as the VDO was never right. Your millage may vary!

Re: Siezed low-time neglected turbocharger

PostPosted: Tue Jun 19, 2018 11:07 pm
by Mrcaseymyers
https://www.turbobygarrett.com/turbobyg ... ooling.pdf found that link. I don’t have a turbo yet but was wondering if they are in fact water cooled turbos that they tried to run dry?

Re: Siezed low-time neglected turbocharger

PostPosted: Wed Jun 20, 2018 12:04 am
by wlarson861
yes they are, adding water cooling may work to solve the problems.

Re: Siezed low-time neglected turbocharger

PostPosted: Wed Jun 20, 2018 6:22 am
by Brett
Mines running great now the cooling system is on.

Re: Siezed low-time neglected turbocharger

PostPosted: Wed Jun 20, 2018 9:00 am
by tljones42
Actually they are oil cooled and water cooled with passages and inlets/outlets for both. Oil cooling alone appears to have been inadequate.

Tom Jones
Onex 0133

Re: Siezed low-time neglected turbocharger

PostPosted: Thu Jun 21, 2018 2:47 pm
by Rynoth
tljones42 wrote:Actually they are oil cooled and water cooled with passages and inlets/outlets for both. Oil cooling alone appears to have been inadequate.

Tom Jones
Onex 0133


Thus far, this has only proven to be true in the post-shutdown phase. I don't believe there has been any trouble reported in terms of turbo cooling in-flight with just oil flow/cooling.

Re: Siezed low-time neglected turbocharger

PostPosted: Fri Jun 22, 2018 8:21 am
by thomasjones42
Ryan Roth wrote:
Thus far, this has only proven to be true in the post-shutdown phase. I don't believe there has been any trouble reported in terms of turbo cooling in-flight with just oil flow/cooling.

I don't disagree. I was really just trying to address the question of "if they are in fact water cooled turbos that they tried to run dry?"

Tom Jones
Onex 0133
Turbo Aerovee

Re: Siezed low-time neglected turbocharger

PostPosted: Sat Jun 23, 2018 10:08 am
by Brett
Flew today in 72f weather, turbo core temps never went over 186f in flight.....

Siezed low-time neglected turbocharger

PostPosted: Tue Jun 26, 2018 4:32 am
by n307tw
That’s really encouraging that your core stays so low in flight! Still have to build the wings but my Aerovee Turbo is sitting on the fuselage ready to run! Can’t wait!


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Re: Siezed low-time neglected turbocharger

PostPosted: Sat Aug 18, 2018 9:21 pm
by Brett
Turbo cooling system still going well.