kwazza11

Awsome work Carl, looks top notch and should make some awsome numbers. what was the head stud kit worth? what head gasket did you use? Damn HKS low mounts and tiny engine mount clearance, my 2871r with a .6 cover only just fits aswell, make sure you get some tough intake piping to stop it rubbing through when your engine bucks.

Same issue i had when i fitted the gt2871r using an rb25 housing and stock wastegate size. what rear housing are you using? basically set the wastegate at 10psi and it'd climb to 18 before redline. i solved this by going to a vg30 rear and boring out the wastegate using a custom wastegate flap so i could really open it up (something like 26mm stock to 34mm now). the fact that the comp wheel flows so much really means it either needs an external gate or a biggish turbine housing to function properly without massive manifold backpressure.. Dale have you had any troubles with boost? odd that the sr and my 2.4 RB suffers from it but doesnt seem like the stocker rb20 is having any dramas.

Theres also the option of joining a car club and going out with them, i've joined the porsche club ($30 for non-porsche member) and they have regular sprint days, all you need is your 2S cams licence (fill in some paper work and thats it) and about 60-80 bucks on the day. usually 4-5 5 lap sprints, one warm up lap, 3 flying laps and a warm down. plus you get to do motorkhana's and hill climbs!

Hey what was done when the head was reconditioned? valve seats, stem seals, were all the faces decked? pm me with details, very interested. cheers Karl

I drove it alittle with the rb25 housing on and it definately felt very responsive, i've got both modified housings available so if i find the vg30 housing laggy i can swap them over and get back to back tests. the 52t assembly like the gt-rs would be better again and i actually ordered the 52t one but the workshop i got to build it didnt do what i asked and i ended up with the 56t one. if i hadnt measured it myself i would of never known either. i cant wait to see what the potential of this turbo is, as surely they could make more than a 2535 with a bit of engine breathing assistance.

Yep definately looks like this turbo is a winner, i've got half a power run on 18psi with my 56T GT2871/vg30 due to a blown headgasket and a dodgy dyno operator, but my power readings are very similar up to 130kph with the 2.4l and much bigger exhaust housing. 90kph i have 75rwkw 110kph i have 140rwkw and 130kph where it was shut down i have 212rwkw doesnt really look like its slowing down at all on my graph and with 15psi and a rb25 turbine housing before the HG went it made 230rwkw. it will be interesting to see just how much the vg30 turbine housing and 56t comp wheel opens up the top end.

well i used a HKS low mount manifold but should be no change in clearance as i used the VG30 housing... are you thinking of a t28-t3 flange adapter? no need with the VG as its also t3. you will need one of those if you go with the garrett external gt28, t28 flanged rear housing, i cant really see the problem using one, aslong as its well designed and tapers down. was my other option before i decided (bad decision IMHO) to go to a internal gate nissan housing.

just a quick tip, last few weeks i've been trying to get a 2871r 56t to hold boost with an rb25 rear housing on my rb24. turbo guy i purchased the turbo from told me he'd done it before and wouldnt be any dramas. turned out he was totally wrong! at first the wastegate would blow open causing boost to take ages to build and i couldnt run anything more than 16psi with garrett's 15psi actuator and HKS EVC (WTF?) so off comes the turbo and the wastegate flap rod was extended to try and add more leverage to the actuator can. once the turbo was back on it would ramp up to 8psi, then gradually spike to over 18psi by redline! off came the turbo again and went with a vg30 housing with a bored out wastegate and larger flap. problem looks like its solved but cant really do a full run due to a blown HG...

Well after a whole lot of dicking around with changing housings, actuators, bored out wastegate etc my new turbo finally went on with boost controlled. only problem is, first few power runs it started pushing coolant out of the overflow bottle! pressure gauge was fitted to the radiator and everything is fine until it hits boost where pressure rised to 18psi before it was shut down. so it seems my head gasket has taken a walk and now the car is once again off the road... So now i need to find a new headgasket ASAP. due to the fact its been bored for 82mm pistons i can't just go and grab a genuine rb20det gasket so my choices are either getting a custom one made out of copper locally or finding someone selling a tomei 83.5mm bore 1.8mm stainless gasket! anyone got any suggestions as to where i could locate the tomei gasket in australia? i know i can get one from nengun or greenline but really cant wait 3-4 weeks for the freaking thing. Cheers Karl

asmuch as i would like to believe that its just bling factor, HKS have obviously done some R&D into this turbo with a particular housing combo and realised it surges, whether its engine and boost specific or whatever. 2rismo, doesnt matter if thier plumbed back into the induction pipe. thier there to releave flow when its surging. and if its all bling why wouldnt they do it with all thier other turbos?

Come on guys. lay off the bus insults! Buses can go fast too!

why need a massive budget.. ? sure you could go for the 2510's or gt-ss's but if you wanted to do it cheaper you could just get a pair of N1 gtr turbos, or garrett's equivalent.. fact is, toyota have done it and it worked well, i've seen a few 1jz's running bigger twins and making good power. I've driven a jza70 supra with HKS t3g's (early 2530's with smaller turbine housings and 360 thrust bearings) its a response machine and makes over 300kws. Plus with the ports lining up on both heads, modifying the flanges on a pair of cheap gtr manifolds would cut costs even more, and the piping would be even easier! to me it sounds like a kick ass idea, i'm surprised more people havent done it. go for it dude! Karlos

not really in the stock position but how about a gts-r manifold? have seen a few pop up on the yahoo auctions for ~40000 yen. use slidewayz or a jdmimports etc to find one.. or try get your hands on a cast hks low mount manifold.

Cubes, yep i installed it myself and all i did was swap the two injector wires around, the throttle switch is only used for kick-down on autos and the exhaust temp signal (57) i assume is used for the exhaust temp light to indicate a blocked cat, thats been disconnected. everything else has been explained, Ti monitor for trip computer, boost control etc. was a massively simple exercise, plugged it in, drove it to the tuner's workshop, got it tuned, drive away!

definately looks like they just swap the injector wires around. i've got an rb25det power fc running my stroked rb20det. all i did was swap those 2 wires externally, selected z32 afm and set the injector pulse and duty cycle up for gtr injectors and it started and ran like factory. interesting though that the boards arn't the same, i have a 5.11 rb25 pfc but not really willing to open it if its going to void my warrenty..

Sorry ezi09s, wont go that low. Cheers Karl

dont look too bad, i'd just get a bit of fine emery tape and clean up those carbon marks on the buttons before they go back in

I'd have to agree with the rest, That line off to the catch can is probably too restrictive and is causing the crank case to pressurise, when the crank case is pressurised the oil drain backs up and pushes oil out the turbo seals. happened to me when i had a retard attack and tried to use a hose and very restrictive brass air filter for my vent and had the same thing happen with my brand new garrett turbo.

Hicas bars sold.

PM sent. FYI everyone else, heres a high res pic of them installed on my coupe.

Yep the three wires are for the MAP sensor, it should of came with the extension loom and sensor. Sensor:

Cheers Satanic. Was qouted $350 from bd4's for a new harness.

Find out those offsets yet?

Selling it due to being in adelaide and i changed the turbo setup so needed a remap, the only option was to buy another ecu or get it transported to sydney for a tune (yea right)! email BD4's and ask them if they can rewire it to suit, they may even sell a loom for it if your lucky, i've done exactly the same thing with a power fc (used an rb25det fc with an rb20 loom) but it requires a few wires swapped around.

it can be used, but you'll need to machine out the guts to suit the massive turbine wheels gcg put in thier hiflows.