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Billet gtx3576 wheel in the baby turbo


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Yeh I’ll do a post later but finished up at 385rwkw @ a low 17.5 psi but had to bring it in a fair bit slower than it could do as the stock tail shaft is hanging in there, also had to fade boost away uptop as the fuel system wasn’t happy past 395 rwkw which was easily blowing past ! 
 

All in all a G2 76 will piss in 450rwkw on E85 @ 22 - 24 psi with supporting hardware on this car.... Just gotta talk the customer into it now haha

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Yeh I’ll do a post later but finished up at 385rwkw @ a low 17.5 psi but had to bring it in a fair bit slower than it could do as the stock tail shaft is hanging in there, also had to fade boost away

There’s actually a few things on this vehicle that needs improving ( currently has a 3* intake so had to use a 4-3 reducer onto the turbo ) The walbro 255 is about 4 years & 60,000kms old so didn’

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Awesome to hear! I thought about the 380 mark on 98. The g35-900 must really be something special again to be even more efficient, saw a sema video and it sounds like theyll keep improving, impressive to see things getting more and more efficient. Seen on some US sites the g35-1050 comes in a supercore so that's promising.

Still the gen 2 gtxs are proving awesome.

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There’s actually a few things on this vehicle that needs improving ( currently has a 3* intake so had to use a 4-3 reducer onto the turbo ) The walbro 255 is about 4 years & 60,000kms old so didn’t have enough headroom up top today but .... but .... with a full 4* intake, Walbro 400 pump I have all the confidence I could of settled on 20 psi and made around 410-420rwkw on 98 without crazy pushing it 

 

With a tailshaft I could of ramped it in at least 400-500rpm quicker too safely 

 

And yes I got RPM on the Dyno sheet hahahaha 

Edited by JETURBO
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Honestly it’s on boost so fast so hard on the street it’s wild !  I’ve explained the Dyno sheet in my thread but I’ll add it here

 

Pretty much 15 psi by 2700rpm, on 70% command with a 7 psi actuator , crank this to 100% and a 11.8 psi actuator it would punch out 20 psi by 3000rpm easy but boy oh boy it will much up a weak driveline quickly ! 
 

The tame street log after tuning with my data logger going shows this is no slouch and with the rate of blaze the tyres went into on a short shift 1-2 would of probably spun the 275’s into 4th 🤪

 

qMUt1sa.jpg

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Short answer is no so far, it could of held 17.5 psi flat until redline but this combo was out of fuel pump so I had to fade it away up top on purpose to make power come over and as it was it kept making power until the end of the run. 
 

It had no issues holding 16 psi flat until redline with 66% waste gate DC ( in simple terms ) 

 

A Set up 7 psi actuator like I had will hold 20 psi until 6000rpm I fully believe 

where it tapers after that I’m unsure, a bigger actuator will then counter it but again the airflow characteristics will always end somewhere but where I can’t say yet but my maths on the experience says it could hold 22 psi until redline with a  11.8 and 100% and E85 

 

All turbo chargers will “sea saw” at some point ;)  

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It’s a bit like the 84rs I tuned a month back, it can spool so hard so fast it will only shine if everything can take it including the engine. Obviously 84rs flows way more LTRS/HR than a 76 so 24 psi on a 84rs is pushing the engine harder than a 76 on 24 psi but a G2 76 “Could” potentially push Rodney to an unhappy place due to the rapid rate of rise. I personally wouldn’t be advising anyone to crank a G2 76 on “full send” with a stock B series engine, maybe 90% on the initial hit. A FG “probably” could withstand 100% send on the initial hit and live. 
 

When the GTX series first came out G1 76’s were super popular but what we were seeing was nearly ever vehicle that was set to full send was lunching half shafts like crazy vs the G1 82 vehicles so this was showing how much more it could stress the full driveline ( inc engine ) with that down low punch .... This is the same reason it’s never advised to activate N2O below 4000rpm as it just stresses everything too much !  
 

Gains under the curve are usually at the cost of hardware longevity :) 

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I did my nizpro billet input shaft at 409rwkw with the gen 1 gtx3576 on e85 at 21psi with a zf tune so will attest to driveline weaknesses...

I almost wanna sell off my gen 1 supercore for a gen2, especially since I only missed out on gen 2 by maybe 12 months. I think I should wait for gen 3 or g35-900 supercores though

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23 minutes ago, Bulletime said:

I did my nizpro billet input shaft at 409rwkw with the gen 1 gtx3576 on e85 at 21psi with a zf tune so will attest to driveline weaknesses...

 

Does that mean you snapped it there or you upgraded it there?

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38 minutes ago, JETURBO said:

It’s a bit like the 84rs I tuned a month back, it can spool so hard so fast it will only shine if everything can take it including the engine. Obviously 84rs flows way more LTRS/HR than a 76 so 24 psi on a 84rs is pushing the engine harder than a 76 on 24 psi but a G2 76 “Could” potentially push Rodney to an unhappy place due to the rapid rate of rise. I personally wouldn’t be advising anyone to crank a G2 76 on “full send” with a stock B series engine, maybe 90% on the initial hit. A FG “probably” could withstand 100% send on the initial hit and live. 
 

When the GTX series first came out G1 76’s were super popular but what we were seeing was nearly ever vehicle that was set to full send was lunching half shafts like crazy vs the G1 82 vehicles so this was showing how much more it could stress the full driveline ( inc engine ) with that down low punch .... This is the same reason it’s never advised to activate N2O below 4000rpm as it just stresses everything too much !  
 

Gains under the curve are usually at the cost of hardware longevity :) 

 

This turbo has me salivating 🤤. Good excuse to upgrade the repco driveshafts when they explode

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@Tom Tucker x2 sets of Repco half shafts were destroyed on a G1 76 back in the day haha that’s what I’m talking about ! 
 

FYI that vehicle was a FG G6ET with a Trutrack on 20 psi and 400rwkw ZF auto 98 fuel but built tail shaft obviously, Felx plate went too shortly afterward but engine held up. 
 

Add another 10% for G2 and who knows what damage it could do lol 

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Does that mean you snapped it there or you upgraded it there?
Sadly it broke on 3rd to 4th shift with slicks on at the circuit. Waste of 2k plus tow plus off the road for a while. Was in there about 18 months. Now I have a 6r80 input shaft and a cf tailshaft
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Definitely will require some modifications even to get it on with a Vband rear housing as the CHRA oil inlet/out water in/out physically look like a different geometry to a GT CHRA locations

 

Might be one of those things where if you wanted one you bite the bullet and go braided lines in and out on oil & water to get the flexibility it would require then a custom V band Dump .... 

 

Starts to add up to a big dollar swop over for what looks to be potentially 5% gain over Gen2 GTX. 
 

If the Spool was there 5% earlier and the ceiling was 5% higher it could potentially be worth it 

 

Whose keen to Be a pioneer lol ;) 

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