slavearm

Hey guys... not to sound like an idiot, but I am considering purchasing a local Greddy kit that the turbo went out on. Potentially getting a real good deal, but I want a little bit larger preferably ball bearing turbo. Anyone know what I should be looking for?

Thanks,

Slavearm

Petrus

Not to be cruel or anything... but have you seen the space where the turbo is located in the car? Not too much to work with there...
So, itīs not a question of what turbo fits with the kit or the manifold. Itīs rather a question about what turbos fit in the car?

slavearm

yah... that's why I was asking. I need something just a wee big bigger. I would love to throw an RX6 on there, but I doubt I would be able to make that work.

rotarygod

There definitely isn't much room down there so you would be very limited. In that small space, anything appreciable over what it comes with is going to be minimal. The other thing is that even if you get a turbo to fit, the ecu tuning isn't going to work. Not even at the same bost pressure. This is because different turbos have diferent efficiencies at different boost levels. What is tuned properly for one turbo at one boost setting may not be the same requirements for another turbo at the same pressure. Luckily this is easy to fix with some tuning but you should be aware of it as it would need to be done. You don't want to just slap on a different turbo and go play.

rkostolni

Bulleseye performance offers an upgraded turbo for the Greddy kit. It uses the same hot side, but beefier center section and a bigger compressor.

slavearm

Thanks RG, but I am planning on doing the basic tuning myself and then letting a professional go at it with a dyno. Most likely XS. It runs like bootey without tuning anyways.

slavearm

This should be interesting... its a PITA to get any details about the turbo though. Thanks for the info rkostolni!

So I got one lead now... anyone else have any ideas?

slavearm

So... I wonder if that bullseye upgrade would actually work on a blown turbo... I mean I would be replacing the center bearing and compressor. But it better be right for 1100 bux. Meh.

rkostolni

Its not that hard to get info on it. It uses a T04B compressor cover with a modified Garret 50trim compressor wheel. The bearings are replaced with steel sleeve bearings. The compressor has a flow rating of 49lbs/min. The kit comes with a preassembled center section and compressor side. You remove the turbine housing from the Greddy turbo and bolt that onto the Bullseye unit. That is all that is reused. The turbine wheel that comes with the kit is a new wheel, but identical to the Greddy one. Best of all is a 2 year warrenty for an additional $80.

So pretty much everything is replaced, it won't matter if your turbo is blown. zoomzoom_8 has this turbo upgrade. He got it when his Greddy turbo blew.

rotarygod

The rotary makes about 8hp per 1lb of air per minute so that means on a rotary this turbo could theoretically (big emphasis on this) put out a max of about 392 hp or so. I should say the compressor section has the potential to do this assuming all other things are perfect.

slavearm

Sweet. And the warranty is just icing on the cake! I have no plans of even trying to make anything over 350... something between 300-350 would be perfect. Thanks for the help guys!

Red Devil

If the Bullseye rate is 49lbs per minute, what is the rate of the stock GReddy compressor?

Petrus

Iīd really like to know that as well...

rkostolni

Greddy doesn't publish that and I've never been able to find a compressor map for an 18g. But you can look at the flow maps for the 16g and 20g and get a very good idea.

Here's one for a 20g in a TD06 housing that I plotted some engine demand lines on for the Renesis. A 16G in a TD-05 looks pretty similar. From talking to some DSM tuners, I believe the 18g will flow more similar to the 20G than to the 16g.

adrian-1

Contact Scott at Mazsport.net. He should be releasing a bigger turbo upgrade soon.

slavearm

I didn't get a reply from scott Last time I asked. I think he is still working on it.