Precision Billet Turbos

[SiR_RB]

What boost she running ?

[SimonR32]

On graph... 2.08bar

[SimonR32]

May take it to the drags this week but with track set up suspension it may not be worth it. Data shows around 140mph trap speed in the 1/4

[HarrisRacing]

Wow that is FAST! Still stock bottom?

[czy18e]

6870 on rb25.

It's a drag car but will post results when I get round to it.

Ran 9.50@142mph with to4z.

[zebra]

auto trans?

[czy18e]

Yep auto and 9"

[zebra]

cool. what car is it in? VL?

[Ben C34]

cool. what car is it in? VL?

Nope. Check his avatar and photo bucket.

Car is sick!

[czy18e]

Thanks Ben.

Edited April 22, 2015 by czy18e

[zebra]

so much win!

whar ets are you chasing with the 6870?

I think high 8s would be on the cards

[czy18e]

I think the record for an rb25 is 9.06.

But we will see. My motor is very tired. (10years old)

[Hattori Hanzo 69]

6870 results on a 26 yet?

[SimonR32]

6870 results on a 26 yet?

One in Perth went mid 800's on a roller on 34psi, think it was a 2.8L

[Piggaz]

Have seen a result. 530 wkw at 31 ish psi.

[SiR_RB]

Would expect that from a 6266/6466 honestly with much less lag

[jet_r31]

I woudnt expect the 6870 to take over in power till up near the 6466 is close

To tapped out

Which on 30psi is no where even close

Even a 6466 is only just to take over smaller frames on that boost..

Cheers

Darren

[HarrisRacing]

I woudnt expect the 6870 to take over in power till up near the 6466 is close

To tapped out

Which on 30psi is no where even close

Even a 6466 is only just to take over smaller frames on that boost..

Cheers

Darren

I agree with this.

Set a powergoal, identify maximum boost the engine can handle, and design around that. Given that we are still running relatively small displacement it needs to be done with boost or revs. I can't see running much more than 31 psi though! And if you are still on the map at redline carrying that boost then you need not increase size of compressor (turbine maybe).

[czy18e]

Yeah but dynos are fickle creatures.

I made 496hp with a to4z on 23 psi and ran 142 mph when everyone was saying to4z's were dinosaurs.

With this motor I expect to only run 26-28 psi and hope for 150 mph with the 6870.

Later on when I build a big motor it will see 30+. What I liked about what the yanks were saying about this turbo is the fact I won't need nos to get an 1100hp turbo on the trans brake and potentially only marginally more lag than the to4z.

And at $2970. Bargain compared to a gtx42r.

[Hattori Hanzo 69]

One in Perth went mid 800's on a roller on 34psi, think it was a 2.8L

that one is defs a 2.8, asking for ya boi vims see if there is a graph for a 6870 on a 26