Jump to content
SAU Community

Recommended Posts

Update some results from the ATR43G2.5 internally gated.

This little turbo has pretty much all the big features from the original G3, It is 30kws short, with 300RPMs better response. It makes just under 300rwkws @ 20psi on pump 98 and 350rwkws @ 20psi on E70.

power.jpg

boost.jpg

All runs are done internally gated using a soft 14psi actuator and EBC. The Lever mod works perfect on a .82 rear housing.

We've also trailed the Electric turbocharger, and surprisingly it made 2.1psi of boost, made a difference of 20HP and 44Mn of torque.

powers.jpg

Stao that E-turbo is only on your DET motor, it will probably work better on a REAL NA motor. You should ask a customer to test it. With that sort of flow it is possible that it wont need any tuning.

That G2.5 is also a nice looking unit. I would be happy with one of those :)

The G2.5 has stepped down compressor trim from 58 to 56 and stepped down compressor from .70 to .60. Still in a .82 rear housing. This turbo has pretty good down low torque with excellent top. Don't forget this turbo is still internally gated. run external would easily gain an extra 20kws.

Performance was consistently around 285rwkws at 18psi on pump 98, realistically there isn't much of a point engineering a bolton turbo that goes up to 330rwkws while 290rwkws is all stock exhaust manifold can pump out internally gated

(also did you know cyc No. 1 and 6 on the OEM manifold does not line up to the engine head? boggie Nissans trying to cut budget from recall, Abe managed better result port matched)

I run the Echarger on my little Sirion with 1L 3cyc engine and it blew cyc No. 2 as soon as it comes to full power in 3rd gear. 2.1PSI from a 6cyc 2.5L would be about 5psi on a 1L 3 cyc engine. I think they all needs to be dyno tuned and checked before hitting the road. The shaft speed is fully controllable with a speed controller.

How ever E85 is seriously fun. Based on a solid 98 performer, making power out of it is a walk in the park. I keen to see what the G3 can do on E85, might be reaching 380rwkws internally gated.

Update some results from the ATR43G2.5 internally gated.

This little turbo has pretty much all the big features from the original G3, It is 30kws short, with 300RPMs better response. It makes just under 300rwkws @ 20psi on pump 98 and 350rwkws @ 20psi on E70.

BAZINGA! You've pretty much just built me the turbo I was looking for :)

You've got me. What is one of these puppies worth inc postage to metro Melbourne?

My intention is this + WMI.

Also what sort of battery/charging system would one require for the e-charger?

The internally gated Rb25det bolton version $1330 inc GST and oil line, and external gated version is $1080 inc GST and oil line.

The current E turbo runs on 44V that makes around 40,000RPMs. I'm in the process of getting a higher KV ed motor and some larger comp wheels. I think the current prototype is plenty for a little 4 cyc engine.

BAZINGA! You've pretty much just built me the turbo I was looking for :)

You've got me. What is one of these puppies worth inc postage to metro Melbourne?

My intention is this + WMI.

Also what sort of battery/charging system would one require for the e-charger?

Do it!!!

That graph looks the goods just on PULP, putting out close to 200rwkw at 4000rpm and the difference between e85 graph seems negligible down low.

WMI should put you up near the e85 power up top as well!

It looks like a good balance between response and top end with limited boost bleed problems.

Stao, is the boost graph the same for the 98 tune and e85 (full boost by 3900) because it seems you only posted the e85 graph?

Edited by Mitcho_7

The E85 and Pump 98 made no difference in response. was getting the exact same response on both fuel, or maybe Trent didn't have enough time to modify sittings down low as we've tuned 98 prior E85, it was about 1AM yesterday when we've finished. There is still abit of work left in the ECU.

On road its mental to drive. it would wheel spin hard (not a the little wheel spin that makes a sound) at 3rd gear (so's every other gears except 4th). Its pretty dangerous to drag off the lights as I can't get the car running straight. I've only full throttled it once in 4th full throttle, didn't span out but its the feeling that I would not take my eye off the road even for a blink.

Its pretty responsive for the power range for every day with very solid power band.

Haha sounds like a ripper of a turbo - with aggressive power delivery and good top end- this could be one of your best turbos Stao :)

So your gonna buy one?

Fixed my clutch (kinda see thread in drivetrain)

This SS1 feels insane with the new clutch

It has no hesitation to spin the wheels in 2nd and even 3rd. Dragged Someone at the lights as well stao and smoked them literally

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • There's plenty of OEM steering arms that are bolted on. Not in the same fashion/orientation as that one, to be sure, but still. Examples of what I'm thinking of would use holes like the ones that have the downward facing studs on the GTR uprights (down the bottom end, under the driveshaft opening, near the lower balljoint) and bolt a steering arm on using only 2 bolts that would be somewhat similarly in shear as these you're complainig about. I reckon old Holdens did that, and I've never seen a broken one of those.
    • Let's be honest, most of the people designing parts like the above, aren't engineers. Sometimes they come from disciplines that gives them more qualitative feel for design than quantitive, however, plenty of them have just picked up a license to Fusion and started making things. And that's the honest part about the majority of these guys making parts like that, they don't have huge R&D teams and heaps of time or experience working out the numbers on it. Shit, most smaller teams that do have real engineers still roll with "yeah, it should be okay, and does the job, let's make them and just see"...   The smaller guys like KiwiCNC, aren't the likes of Bosch etc with proper engineering procedures, and oversights, and sign off. As such, it's why they can produce a product to market a lot quicker, but it always comes back to, question it all.   I'm still not a fan of that bolt on piece. Why not just machine it all in one go? With the right design it's possible. The only reason I can see is if they want different heights/length for the tie rod to bolt to. And if they have the cncs themselves,they can easily offer that exact feature, and just machine it all in one go. 
    • The roof is wrapped
    • This is how I last did this when I had a master cylinder fail and introduce air. Bleed before first stage, go oh shit through first stage, bleed at end of first stage, go oh shit through second stage, bleed at end of second stage, go oh shit through third stage, bleed at end of third stage, go oh shit through fourth stage, bleed at lunch, go oh shit through fifth stage, bleed at end of fifth stage, go oh shit through sixth stage....you get the idea. It did come good in the end. My Topdon scan tool can bleed the HY51 and V37, but it doesn't have a consult connector and I don't have an R34 to check that on. I think finding a tool in an Australian workshop other than Nissan that can bleed an R34 will be like rocking horse poo. No way will a generic ODB tool do it.
    • Hmm. Perhaps not the same engineers. The OE Nissan engineers did not forsee a future with spacers pushing the tie rod force application further away from the steering arm and creating that torque. The failures are happening since the advent of those things, and some 30 years after they designed the uprights. So latent casting deficiencies, 30+ yrs of wear and tear, + unexpected usage could quite easily = unforeseen failure. Meanwhile, the engineers who are designing the billet CNC or fabricated uprights are also designing, for the same parts makers, the correction tie rod ends. And they are designing and building these with motorsport (or, at the very least, the meth addled antics of drifters) in mind. So I would hope (in fact, I would expect) that their design work included the offset of that steering force. Doesn't mean that it is not totally valid to ask the question of them, before committing $$.
×
×
  • Create New...