Gtx3076 gen2 boost creep

[Dose Pipe Sutututu]

You are missing a grub screw. The gate has 2x sets of boost reference ports which are located on the top and bottom of the diaphragm.

You only need to use 1x of each from the top and bottom (as you have) and block the other ones not used as these are used to hook up in parallel additional gates.

There is nothing wrong with how the gate is mounted and the size of it. 

[Dale FZ1]

10 hours ago, Eager said:

1.4 is my target on 97 Ron fuel but if it seems reliable I’ll possibly try 1.5, i don’t want to forge the engine however so baby steps I guess. What’s the opinion ? On a safe level for a unopened neo

If you're achieving 465rwhp the in-cylinder pressures are getting up there.

With good tuning the pistons/rods ought to survive. But the OEM head gasket with a bit of age might not be that long lived if the car sees a lot of heavy duty use.  MLS type + head stud kit would be worth looking at IMO.

Tune will dictate what's "safe". 

[Eager]

Hi dale cheers for reply

Ye, I have now replaced that grub screw, at the tuning shop we didn’t have any handy so took me a day or 2 to find a 1/16thNPT grub screw, but it’s sorted now

so just waiting to get a bit of free time possibly Friday to reset the controller and go through the steps

to add however that 465 is at crank, I’m in the UK and most tune companies measure at crank so it’s not rwhp man, sorry for confusion 

[Dose Pipe Sutututu]

Typical pommies lol

I work with a bunch of them 

I am surprised your tuner continued to tune the car as is without the top section of the gate properly plumbed up. I would have only ran a boost reference to the lower port and inverted the EBC operation instead of pushing through with the way it was (which could have ended badly with poor boost control).

 

[Eager]

With the gate properly plumbed is that likely to combat my creep too ? It would be nice to hold a fairly steady 1 bar as per spring

 

ill try get a few hours spare to set the controller up over the next few days 

[Dose Pipe Sutututu]

24 minutes ago, Eager said:

With the gate properly plumbed is that likely to combat my creep too ? It would be nice to hold a fairly steady 1 bar as per spring

 

ill try get a few hours spare to set the controller up over the next few days 

Very likely

[Eager]

SO to bring this back up

the car was re-tuned by a second tuner, who has left my evc turned off, as again the setup was creeping. I did have the boost controller working but he seen no point leaving the evc on as the turbo was creeping on its own to the area of boost intended to run. I maxed out my fuelling so the 570 injectors will be coming out, to allow beyond 1.3/1.4 bar of tune. He also thinks a precision wastegate will solve the creep, 

The creep is giving a very linear delivery rather than coming on boost harder. 

[hypergear]

I had similar issues on 6 boost single pulse T3 manifold same style as yours. Running a smaller turbocharger with a 45mm turbosmart external gate. It kept on creeping as engine revved out with a 14psi spring, no boost controller. In saying that I have seen the same turbo working with a 45mm gate with a different manifold. I think its more less the way of where and the angle of the gate is mounted on the 6 boost causing this problem. I guess easiest solution would be moving on to bigger gates. 

 

Edited November 28, 2018 by hypergear