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I’d definitely go 4 port if your out of gate . I run a 19psi spring and we get to 35 psi with minimal duty cycle heaps left in it your turbo should ( keyword) should do 35 39 psi but run the risk of head sealing  tbre said they have had mls gaskets up to 1300 hp but they move around and leak 

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Did some tuning today. Apparently gapping the plugs did the trick cos straight away it ran up 605awkw with no tune changes.   I frigged around with fuel and boost and this and that, and mana

Here's the graph. I had to run it in 3rd to get a number as I was hitting a speed limiter in 4th and was too tardled to work out how to remove it. I disabled it in the vid block, changed it in the tun

Got to the dyno today and it went pretty much as I expected. The exhaust showed to be a huge restriction but we all knew that anyway. The first run right off the bat showed 367awkw on 16psi and

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More in the turbo and more in the head might have to go heavy on the port Puff can only push so much air through, all the 1000hp-1500hp engines have heavy port work from what I have seen.

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Being the ever tightening tight arse that I am, I only ordered one wastegate spring just now. It's a 12psi outer spring, so that gives me a 7psi inner, 10psi middle and 12psi outer, for a total of 29psi.

 

Will I try and run double the spring pressure for 58psi worth of boosty goodness? Probably not. Will I eventually run it at 100% wgdc just cos? Probably yes. What does that mean? All of the boost, all of the time and at least 23 in the mid.

 

I'm getting it couriered to work so should have the farken farker sooner rather than later.

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Ahh Yeah I forgot you got that head gasket puff , I’m seeing a lot of guys starting to use the fire ring style without the grove in the block , If you watch the skid factory Barra build they don’t cut a grove in the block .  the gasket locates it like the anthea one . Maby it’s a better option , please send yours to 40 psi for me 😂 😂😂 my wish list is NOS , 218c and cnc ported head , I just worry about the bullet pistons 😂 

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Did cam timing, fitted new wideband sensor, new spark plugs, fitted FG rocker cover and swapped the coil plugs over for the new FG coils.

 

The intake cam ended up advancing about 5 degrees and the exhaust ended up about 7 advanced from what they were. I left them both 2 degrees advanced from the cam card cos the lifter bleeds down as you open the valve 1mm, so it'll be pretty close to the specs. Boring info here, it takes about 35 degrees of crank rotation to go from the valve starting to open, to the valve being open 1mm.

 

The car is a lot quieter now which is good and seems to come on boost quicker and smoother.

 

Oh and it turns out the wideband sensor wasn't stuffed, the wideband is still having a fit so fark knows what it wants. Mebbe a recalibration is in order?

 

Anyhow there is that and I suppose next weekend I'll have some more WG spring in it and see what it can make then.

 

Time for a beer :drinks:

Edited by Puffwagon
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1 hour ago, Puffwagon said:

Did cam timing, fitted new wideband sensor, new spark plugs, fitted FG rocker cover and swapped the coil plugs over for the new FG coils.

 

The intake cam ended up advancing about 5 degrees and the exhaust ended up about 7 advanced from what they were. I left them both 2 degrees advanced from the cam card cos the lifter bleeds down as you open the valve 1mm, so it'll be pretty close to the specs. Boring info here, it takes about 35 degrees of crank rotation to go from the valve starting to open, to the valve being open 1mm.

 

 

Running fixed Vernier gears?

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Recalibrated the wideband and it started working. Went for a quick drive and whether it's the changed cam timing or different sensor, it seems to have leaned out a touch.

 

Will have to get it back on the dyno and get the fuel sorted again.

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So farken yerp I chucked the other wg spring in after work and gave it a quick retune so it didn't go crazy. It ended up making 25 to 26psi on gate so there it is. I'll wind in the duty cycle on Saturday and see where it ends up. I'm not that keen to break another rocker so I'll only go to 40psi if it gets there, then turn it back down to 30psi/700awkw for the street to save the driveline a bit.

 

I had a look at the dyno graph a bit closelyer and it dropped 60kw from 5900 to 7000rpm last time so it'll be interesting to compare that if I remember to change the cat. Also the cam timing a a fair bit different so that might change it as well. End of the day I'm happy to run a cat on the street as the car isn't exactly slow, but for racing etc it might be worth running a decat pipe.

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Winding in the duty cycle I suspect it will end up with a lunched ZF but I'm knocking on wood for you atm...
Cat removal is definitely the go. It's the reason why Nizpro use two of them in their 4" system, that's the way I see it anyway!
It made the note deeper or at least that's what it did with my 3.5" xforce system.
Do you have issues with roadside RTA's or police down your way?

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Yeah nah she'll be right. I've got it back to 30psi with about 50% duty cycle and will try and crack 1000awhp in the morning.

 

I'll leave the cat in for now and see if I can get there as is, but will remove it eventually just for the sake of more data.

 

There are police around but if you aren't speeding or doing stupid sh*t they leave you alone.

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Update, I've got it holding 34psi at 6250rpm with 80% wgdc and the injectors are at 80%. It looks like the turbo has stuff all left in it and the injectors aren't far behind. I'll chuck it on the dyno in the morning but I' don't think it'll make the power I want it to.

 

Hey at least it was a fun ride and learnt a lot along the way. Bigger turbo? Maybe. Bigger injectors? Maybe. Built trans? Maybe. Make the falcon awd? Maybe. Anything at all? Maybe.

 

Time for a beer? Definitely! :drinks:

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Regardless mate, solid journey ! 
 

Im suspecting you’ll loose a bunch under the curve and might not gain the flow up top for the sacrifice... but that’s my educated guess 

 

can’t wait to see the graph !

 

plus an overlay of peak before cams vs after would be great viewing ;) 

Edited by JETURBO
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I reckon you're on the money there mate.

 

It's looking like the turbo can't flow enough to take advantage of the cams which was kinda to be expected.

 

At any rate it's still a mental thing to drive, and being a 6 speed auto with antilag you can get it on boost pretty quickly when the need arises.

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Moving air at 7000RPM

 

Standard Head -  intake flow 242 cfm - 400 lift @28'' 

Comp Head - intake flow 335 cfm -400 lift @28'' 

 

The head is good for 1000HP at the crank, that's it untouched, you tuner boys are funny 😁

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