Turbine 1.9 jtd 140/150 hp 16v hybridized on the 1.9 jtdm 8v 120 hp

[tidus1985]

the object of all my work

as the turbine original horsemanship a garret GT1749VM code 736168-3 and I bought a turbine used a 147 jtd16v 140cv code 716665-2.

The work had already been studied by me, that hybridize lka turbine 716665-2 leaving the body core assy & nut intake the same and change the chicciola exhaust with one of my turbine original 736168-3.

in the annexes to the nut of the turbine exhaust original

in the annexes to the nut of the turbine exhaust of the 140cv

The turbine had dirt in the spiral of aspirations due to the 2 years the firm was not covered, I removed the nut and clean the whole of the impeller

in the annexes to the hot side turbine

I replaced the nut of the turbine original on this, and seemed to brush, leaving the original geometry as the fins on the geometry of the 140era less thick, and then didn't do well for this type of nut.

in the annexes to the differences of the impellers, intake and exhaust between the 2 turbines, oddly enough, the snail of the turbine exhaust 140 hp it doesn't fit on the impeller 120 hp since this impeller ? slightly much larger in diameter top

in the annexes to the differences between the geometries, practically the same

in the annexes to the impeller intake of 120 hp, 5+5 blades and immediately after that of the 140 hp, 6+6 blades

The car now runs better and smokes less, but I still have to redo the map to make more diesel now, the turbine has a minimum of the game, I feel only a slight flicker for a moment in time in which the turbine reaches the peak pressure of 1.6 bar and then down to 1.5, 1.4 bar, is frfrr, as when the turbines of gas fall of spins, but does it just a little noise so, and the whistle to a minimum giving you some sgassatina that the other was not, also ? increased, the pressure of the oil to a minimum of 0.2 bar, a sign that probably, or the old turbine was worn in the steps of the oil ( I don't think why had not the slightest the game ) or this one ? the most restrictive in the lubrication of oil.

Appearance your comments and opinions about this!!

[munro]

hi tidus..I wanted to ask you..but you have not taken even a measurement of the impellers???as you're put with the trim of these??

[tidus1985]

? everything shown in the attachment, if you see, of course I had taken measurements before reversing the spiral of the exhaust, what do you mean by "trim"?

[tidus1985]

The suction side trim of the old turbo 49.8 trim of the new 54.9

[tidus1985]

Exhaust side trim turbine old 78.4 trim turbo new 75.24, now I don't know if the traffic jam. Some other problem to inform them Munro!!

[munro]

the trim tidus and a dimensional measurement of an impeller and consists in calculating the minimum and maximum diameter of the same...more and the top of the trim that is calculated from these two measurements, the more the turbo and unable to pump air at high pressure..
then a turbo with trim 48(not referring to the diameter) will be able to get to pressure ratios well in excess of a trim 52....
the problem of your noise "type frfr" it probably happens because your troubles hybridized has a trim very high, so the pressures that make it work, he goes in the "choke" or "choking" that is to say it wants the cio? means that the air that should compress escapes from the impeller tornado in the intake to the turbo, creating a vortex of fluid dynamics that sends in the "stall" the compressor.....

[munro]

I hope I can help you.....

[angelolsp]

But more or less the turbines are the same does not hold high pressure and I would have taken that of the 2.4 if I had to change it I did more horses

[tidus1985]

Then from there? that you have done to me and I read on.the site of the garret this turbine to match pump pressure pi? the air but manages to get less than oressione , in fact, the machine at the same pressure smokes less and runs better,

[munro]

not ? that's right angel...just look at your posted images related to the compressor map of a gt2052....
the turbine in question and always the same for both ****th e ratio A/r is to ****l impeller diameter minimum...
but only by changing the trim from a "structure" to another the turbo and capable of pressing at pressures higher without any problems...
in the figure we see that the turbo trim 52 is unable to arrive at a Pr of 2.5 cio? 1.5 bar is not l? f?....
while in the exact same turbo with a trim of 48 manages to get a Pr by almost 3 i.e. almost 2 bars....