6 Port Supra B58 Big Turbo Options

[FluffyMangoes]

Wanted to share for anyone who might be interested.

This is the P2uned Series 1 Turbo Kit with the EOS Intake Manifold and Port Injection. I’m running a Xona 9564s, with two turbosmart wastegates and a Tial Q50 blow off valve.

This setup on E85 makes between 800-900whp at ~40psi.

1/4 mile trap speeds between 140-150, ETs between 9.2-9.8, 60-130 between 4.7-5.5.

Total cost before drivetrain modifications: $12,800

looks amazing. can I ask what made you pick the P2uned/xona route specifically?

Sponsored

 

[teal.supra]

looks amazing. can I ask what made you pick the P2uned/xona route specifically?

@Jesse DaBears / @zrk and Mike from Evolution of Speed all used to run this combination, so I just copied a recipe that I knew would work.

It’s kind of fun to have a unique setup with most folks running the PTE, but also evidence shows from the R35 GTR community that certain Xonas outflow PTE applications (not a generalization of one being entirely better than the other).

The Xona platform is highly renowned in the Audi / Lamborghini / Porsche / GTR communities, which seems to anecdotally support that the turbos meet or exceed expectations of high horsepower applications.

 

[rottmore]

@Jesse DaBears / @zrk
It’s kind of fun to have a unique setup with most folks running the PTE, but also evidence shows from the R35 GTR community that certain Xonas outflow PTE applications (not a generalization of one being entirely better than the other).

The Xona platform is highly renowned in the Audi / Lamborghini / Porsche / GTR communities, which seems to anecdotally support that the turbos meet or exceed expectations of high horsepower applications.

I have to appreciate Xona for offering compressor maps for all of there turbos. Robert must have invested allot of money on them. I recall Xona from the DSM's days, But can someone tell me if they have ever heard of Apex turbos? I've never seen them before. They have a really interesting design.

 

[teal.supra]

I have to appreciate Xona for offering compressor maps for all of there turbos. Robert must have invested allot of money on them. I recall Xona from the DSM's days, But can someone tell me if they have ever heard of Apex turbos? I've never seen them before. They have a really interesting design.

Apex is now what the EOS guys are running instead of Xona, and hold the records for quickest and fastest Supra with. Unfortunately they do not publish the compressor maps, but must be a great quality product!

 

[_Sp1ral0ut]

Forgot about this thread/comment. P2uned is able to add a gesi cat in their kit for a little more money fyi. I ordered mine with a cat and the g35 1050 turbo. Will probably take another 3 weeks to receive at this point.

He meant two weeks.

I'll let it go this time because Chris is iced.

 

[ChrisIsIced]

He meant two weeks.

I'll let it go this time because Chris is iced.

Ah yes. The obligatory 2 weeks!

 

[_Sp1ral0ut]

Ah yes. The obligatory 2 weeks!

I'm iced too!

 

[rottmore]

This is the P2uned Series 1 Turbo Kit with the EOS Intake Manifold and Port Injection. I’m running a Xona 9564s, with two turbosmart wastegates and a Tial Q50 blow off valve.

This setup on E85 makes between 800-900whp at ~40psi.

1/4 mile trap speeds between 140-150, ETs between 9.2-9.8, 60-130 between 4.7-5.5.

Total cost before drivetrain modifications: $12,800

Jesus christ I just noticed. Norris wants 6,100 for his turbo manifold? These XX2k drag guys are price gouging like they're selling @_Sp1ral0ut 500 carat Icegrillz

 

[Jesse DaBears]

I have to appreciate Xona for offering compressor maps for all of there turbos. Robert must have invested allot of money on them. I recall Xona from the DSM's days, But can someone tell me if they have ever heard of Apex turbos? I've never seen them before. They have a really interesting design.

We run Custom Apex turbos. While i do think they are much better than PTE, I dont have apples to apples comparison. I will tell you the quality alone is much better over PTE. Billet center sections on the Apex turbos.

I ran 48 PSI on my PTE 7475 Next Gen and it went 7.9s @178 MPH (definitely could have gone 7.8s at the same boost level) I ran 42 PSI on our Apex and it went 7.9s and 48 PSI went 7.6s @ 184 MPH.

We dont really do big power dyno so we we havent dynod at these levels. We use them only for data before we go to an event, but we dont go full tilt on the dyno lol.

 

[SmurfA90]

I’m looking into turbo options and noticed that the PTE 6870 NG is oil-cooled only, whereas something like the Garrett G40-1150 is both oil and water-cooled.

Does oil vs. water cooling make a significant difference in performance or long-term reliability — especially in extremely hot climates?

I’m asking because I’m considering the DOC Race kit with the PTE 6870 NG, but I’m unsure if the lack of water cooling might be a concern down the line.

 

[rottmore]

I’m looking into turbo options and noticed that the PTE 6870 NG is oil-cooled only, whereas something like the Garrett G40-1150 is both oil and water-cooled.

Does oil vs. water cooling make a significant difference in performance or long-term reliability — especially in extremely hot climates?

I’m asking because I’m considering the DOC Race kit with the PTE 6870 NG, but I’m unsure if the lack of water cooling might be a concern down the line.

I'm assuming you mean that the CHRA on the PTE only has 1 oil IN-OUT fitting for bearing lubrication. It's somewhat debatable whether water cooling is strictly necessary, but if you're in Qatar, I would 1000% recommend a turbo with water jackets for cooling. Ball bearing turbos require less oil for lubrication compared to journal bearing turbos, so they technically provide less of a cooling effect. Water cooling helps extend turbo bearing life, especially after shutdown. Prevents the oil from coking onto the bearing.

 

[SmurfA90]

I'm assuming you mean that the CHRA on the PTE only has 1 oil IN-OUT fitting for bearing lubrication. It's somewhat debatable whether water cooling is strictly necessary, but if you're in Qatar, I would 1000% recommend a turbo with water jackets for cooling. Ball bearing turbos require less oil for lubrication compared to journal bearing turbos, so they technically provide less of a cooling effect. Water cooling helps extend turbo bearing life, especially after shutdown. Prevents the oil from coking onto the bearing.

Thanks for taking the time to break that down — really appreciate the added context.

Just to add, I've been speaking to RK Autowerks and they are working on a B58 turbo kit using the G40-1150. It's going to be very similiar to their current S58 turbo kit offering.

Waiting for the release — looks like a solid option for those looking for the Garret turbo option.

 

[rottmore]

Thanks for taking the time to break that down — really appreciate the added context.

Honestly, It was actually a quick reply. So much more to it than what i stated. Like if the CHRA is cast iron vs aluminum, low demand vs high demand applications, ball vs journal, thermal efficiency, ambient temps, cost. All play into the debate on if you should watercool... (I don't care what people say, you should definitely watercool.)
Also left out that if the turbo overheats the oil film would breakdown and you'll have metal on metal contact in the bearing, oil seal fail and leak, thrust bearing wear, turbine shaft warpage. Probably more that I'm forgetting but surprised that the PTE doesn't have any water jackets.

Just to add, I've been speaking to RK Autowerks and they are working on a B58 turbo kit using the G40-1150. It's going to be very similiar to their current S58 turbo kit offering.

Waiting for the release — looks like a solid option for those looking for the Garret turbo option.

There seems to be some type of drama going on between Raza and Chris Miller at Puredrivetrain.


I'm not sure who to believe or if those Texts are real, but if Raza acts like that along with copy pasting other peoples work and not innovating, I would hold off on buying anything from RK.

 

[SmurfA90]

Honestly, It was actually a quick reply. So much more to it than what i stated. Like if the CHRA is cast iron vs aluminum, low demand vs high demand applications, ball vs journal, thermal efficiency, ambient temps, cost. All play into the debate on if you should watercool... (I don't care what people say, you should definitely watercool.)
Also left out that if the turbo overheats the oil film would breakdown and you'll have metal on metal contact in the bearing, oil seal fail and leak, thrust bearing wear, turbine shaft warpage. Probably more that I'm forgetting but surprised that the PTE doesn't have any water jackets.


There seems to be some type of drama going on between Raza and Chris Miller at Puredrivetrain.


I'm not sure who to believe or if those Texts are real, but if Raza acts like that along with copy pasting other peoples work and not innovating, I would hold off on buying anything from RK.

Now you’ve got me thinking about going water-cooled or not. I mostly drive the car on weekends, don’t track it, and only do the occasional pull or race. That said, I’ll keep weighing my options and digging into the points you raised. Personally, I prefer a bottom mount setup since inspections here are strict — you can fail just for an exposed intake. Options are limited, so I’ve been holding off and waiting for the CES kit to drop.

If I do go top mount though, the Doc Racing kit looks like the best value for money from what I’ve seen so far.

As for the RK and Pure Drivetrain drama — pretty entertaining. But RK just dropped their B58 Gen1/Gen2 turbo kit. Their T4 divided manifold supports a bunch of turbo options:
https://www.rkautowerks.com/index.php/product/rk-autowerks-b58-single-turbo-kit-gen2/
They’ve even got a discount running right now.

 

[SmurfA90]

Does bottom mount (assuming the same turbo) provide that much advantages over top mount?

My reason for choosing a bottom-mount full-frame setup is purely to conceal the upgraded turbo during inspection. Qatar has very strict modification laws — you can fail registration or even get your car impounded if the setup is too visible. If that weren’t the case, I’d definitely go top-mount. Nothing beats popping the hood and seeing that setup staring back at you ?

Sponsored