menthol369

I dont recall exactly where the marks lined up on the covers as i used a dial gauge an degree wheel to set the timing this time round.

Coming from the bloke who needed 3 days to tune the car?

Im not going to bother responding to the shit talkers in this thread, clearly they have no idea and i could probably gain more information about my issue playing Need for speed than reading that garbage. And yeah the Dyno day was savage, so it made it hard to get enthusiastic and start trouble shooting everything when we were both dehydrated and exhausted. The Cam timing was as follows Intake= 121 Factory =120 : Advanced by 1 deg. Exhaust= 119 Factory = 117 : advanced by 2 deg So it was pretty well spot on, i didnt bother adjusting the intake as a little advance wont hurt it, exhaust i have now marked the 117 spot on the came and we can adjust from there. I swapped out the turbine housing as stated above which has given gains at all RPM ranges ( yet to put it on the dyno to see how much) And the VCT now activates with the external line fitted.

Interesting Dyno results 2530 / setting up the tiing with a dial gauge Had the car on the dyno the other day and seemed to run into some strange issues. Ill start by explaining the setup: Stock bottom end Stock head with internal VCT mod ( expect has upgraded cam springs Gt35 front wheel on a holset HX35 ( 12cm, 60mm inducer, 70mm exducer) supporting mods for 350+rwkw So the dyno sheet attached was the absolute peak the car made on 20 pound, it was a hot day with the ambient temp in the shed 40-50deg however back to back runs showed the car lacking power each pull dropping to 280rwkw, and then even when letting the car cool it would not make the 300 again. After mucking around with a few different ideas and finding that the VCT was not working we called it. After doing ssome research on here its possible that the cam timing is out ( even though the marks are all pretty well lined up) its possible that due to tensioner placement, decked head and block etc that it could be quite out. So my questions are: does the dyno graph shape indicate the cam timing? ( what 2530 continues making power to 6800 with no drop off?) and what degree to set the cams up using a dial gauge? Any other suggestions? Cheers

How old is your wastegate, and does it hit the track often? The wastegate springs get weak over time with continued heat cycling, i had 1 bar gate springs that ended up opening around 6psi due to the heat. This was after a couple of years on the track however.

Manifold Sold

bump, neg on everything

Rb25 steampipe manifold + ecu afm etc rb25det head for 30 block Rb25det steampipe nz manifold $200 Has slight banana but i still got it to seal. Has flange for 45mm hyper gate. T3/t4 (currently has studs for t3) Z32 genuine afm $100 Z32 ecu socketed for nistune ready for rb25 $50 Rb25det head ready to bolt onto rb30 block $500 Has internal vct mod/grub screwed to block vct. New valve stem seals, lapped valves

malpassi fpr still available?

fpr still available

open to offers

JECS 660cc Sidefeed injectors Used for about 4 thousand Ks, going bigger. Located in hornsby but will post 350$ ono

Sorry I should mention it's already setup for highmount so rb bolt on is pointless. Is the atr45 the same rear wheel as the atr43? Not sure of its an error but on your site the atr43g4 boost graph is labelled as "atr45" and full boost is around 4900, not to mentioned. The sharp power curve Also I'm not planning on going over 380 (which is what the g3 maxed out on e85) at any stage. don't think the chasis an take it

Ive read so many pages of this but cant find much info on 30dets and these turbos! - so i apologize if this has already been covered. Im looking at either an ATR45 .82 or the ATR43G3 .82| The car is track purposed so response is crucial im aiming for around 330+ on pump 98 ( i figure if i want more cams and e85 will get me there ) 30det is as follows All supporting mods ie exhaust cooler fuel system etc standard head standard 30e so roughly 8.4~ CR So looking at the dyno sheets for these turbos the atr43 g3 will come on 1000Rpm sooner than the ATR45 and will both make the power level i want? add the extra cap of the 3 ltr and i should be looking at roughly 3200rpm all in with the ATR43?

what firmware version is it running? i found it had heaps of issues on V 1.24? or something. revert back to 1.0

appriciate it, because i certainly have NFI! also being 12cm^2 divided twin scroll housing its probably a fair whack less than the stated 12?

mate of mine who i got the turbo off has already ordered a 16cm rear for it haha. ( ill add that this turbo is brand new) ive now spoken to a couple of guys that have gotten 400hp out of these turbos on 30e+t Gtsboy. that would return the opposite of what is happening. It stacks on boost real quick at lower rpm and maxes out real quick. Dale it was a 30et, not det ( not that it makes much difference, head flow and lower comp however would come into play) but all signs are indicating that this turbos rear housing is too small. I know its a disel purposed turbo, but you would think for a peak of 220~ rwkw it would come on earlier than it does. ill just have to wait for this rear housing to turn up,

This is a dyno sheet of an rb30et with the same turbo runs e85 400hp on a steady 20 psi could valve float cause this? stock 20 year old springs...

Cam timing is correct ( albeit not perfect as it was done as you do on a 25) Egts are not high and the turbine housing doesnt get mega hot with back to back runs, the mani glows red but that is normal. I did some research and the stamped "12" indicates it is a 12cm rear. i have a mate who works with alot of trucks and buses that use holset so it may be easy to go to a 14 or 16cm housing checked intercooler for rags, pipework is nice. one of the tests we did was hook pressure to both ports of the waste gate and clamped the top hose so it didnt recieve pressure and the gate operated nomral. did a full power run and when it go above 5K let the crimp off so the gate (should) close it recieved a 3-4 psi spike ( which should cause a significant increase in power) but didnt increase power where the spike occured.

Yeah boost was measers at the comp outlet and the mani exactly the same @ WOT

oh and the rear housing is 12cm ( i think, it has 12 164 on the housing)