Hi Guys,

One of my APS Turbo rotors is messed up.. It cannot move at all.
I spent a few hours on the forum trying to understand what are my options going forward... but it seems that their are various opinions and no consensus on what the best option is for replacement or upgrade of turbo's. My understanding is that my turbo can be repaired by changing the center housing rotating assembly (CHRA) or alternatively change turbos completely. Also the APS turbo's are identical to the GT2871R but with a smaller compressor housing.

If I change my CHRA it the seems that it is recommended that I either go for the BB GT2871R CHRA or even better the BB GT3071R CHRA. If I replace turbos then I should go for the BB GT2871R.

Can you guys kindly confirm if my understanding is correct and also what other options I could consider. Lastly can you make a recommendation.. O yes my performance goals is 600whp. Thanks Guys

 

I upgraded the entire turbo to Garrett BB units from the APS journal bearing units, you just have to send in the oil lines with it so you can still have a plug and play unit. You can upgrade or replace just the CHRA as well, with either size you specified, both will fit inside the stock APS housing. If you have a TT setup you should do both at the same time, so they match.

Blouch Turbo, Inc.
1925 State Route 72 North
Lebanon, PA 17046
ph: 717-865-3276
fax: 717-865-6478
sales@blouchturbo.com

http://www.blouchturbo.com/contactus/

Here is where I got mine done - Good luck!!

 

from what ive read the gt28 will do it but i think thier out of their peek efficiency at that point.

 

Thanks for the response.

What upgrade did you go for and what was the result in terms of performance... power, spool, etc.

If I replace the turbos will the stock GT2871R work?

Also I am in South Africa and will use a local service provider to do the upgrade. Is there any special instructions I should give them?

Kind Regards

 

I wouldn't mind seeing what a sequential set up would do... Why not do 1 at a time? Cass did Blouch tell you it would screw things up? (other than tune)

 

I was speaking in terms of upgrading to a larger size and was assuming with my limited knowledge that the turbos should be the same size or other mods may be necessary (dual widebands and possibly custom fuel delivery per rail )

I honsetly didn't ask Blouch about running a sequential setup. I figure if it was easy or even doable than SP would be the first since they have done it on the Supra platform before I think.

 

My car is not on the road yet, so I cannot say what the power comparison is. In addition, I upgraded prior to even installing the stock APS turbos on the car, so I don't have anything to compare it to.

Size wise the GT2871R will fit, but you may need to put the guts in the APS housings, at least the wheels. You will need to have a few oil lines custom made to bolt up from the Garrett product to the APS connections on the kit.

What turbos are in your kit, the ball bearing or the journal bearing design?

 

I had the older flavor of the APS TT and one of mine went bad...I had both turbos upgraded to 2871R cartridge..and my car made the same whp at 14psi than it did at 13....but feels a little more torque-y. IMO if you're going for 600 on pump then the 3071 will be you're best bet.

 

when you say the 3071, are you talking about the chra or the whole turbo? does a 3071 chra fit into a gt28 frame as the the ones that come on the apstt kit(old)? if the whole turbo setup to a 3071 will everything still bolt up to the existing flange on the exhaust manifold? Also will a larger turbo (larger than a 3071) fit on the aps tt kit, if so what size would be the largest, and is there anyone running a larger turbo set up on a aps tt kit and what kind of pump gas numbers are they making and at what psi?

 

I believe the 3071 fits inside of the stock housing, at least it fits the new journal style for sure. A 3071 will basically put you in APS extreme territory assuming you have a fuel system that can support the turbos. Do a search for threads running the APS Extreme on pump gas, I am also assuming a fully built motor for the OP, since 600whp is his stated goal.

 

thanks for the info. I have the old bb aps tt kit with the modified 2871r's. I know it will not make 600whp on pump, but i am thinking of modifying my setup or going with a new set up to hit that range without water/meth. possibly larger turbos for the aps kit or selling the kit and getting something that has room for upgrade ability.

 

Dont know yet... I bought it about 2 - 3 years ago. I will know once the turbos are removed. This should be tomorrow.

Cheers

 

Stop ****ing around in FI!!!!!