The Mafia

Ok. Hi Everyone. As you are all aware, the Garrett GT30r is a great upgrade for the RB25 for any user looking between 240rwkw and aboout 300rwkw. Before I continue - here's a few things about my car. Its a Standard motor, 3% leakdown. Water meth injection, powerfc, 555cc Nismos, Full exhaust, FMIC, etc. 18psi of boost. As a few may know, I managed to get myself a poor GT30r, one with a badly setup Compressor wheel and a Turbine wheel that I've been told is letting it down also. My Setup has a .7a/r compressor cover, and a ground out RB25 Stock turbo Exhaust housing. It apparently has a T04S wheel in it. 700177 is the first half of the part number on the plate. Mine is not too bad though - Managing over 240rwkw with heaps of torque, (haven't got dyno figures because I haven't dyno'd the car) but I'm running 12's with 112mph. Anyway.... Full boost on my Turbo is at about 4000rpm in second, and thats at 18psi. There is no evident surging issues, or boost creep. I'm using the $22 boost controller. I've spoken to the turbo guy in mackay here and he's offered to help me out by taking my turbo and sending it to garrett and getting the comp and turbine wheels changed to my choice, and this for less than $500 which i think is better than spending $2000 for a new one. I've been speaking to Disopotato03 and he's suggesting the GT3071 (.63 ex internal gate) or the GT3076 (.86 internal gate). (and thanks for putting up with my extreme lack of knowledge Disco, you're a real champ) I've managed to get some Compressor maps, and I'm looking at the difference between these two turbos and I'm not really sure what it is. I only have a few small questions and are after a little bit of feedback from anyone that is using one of these turbos. 1. What sort of lag are you looking at with the two combos mentioned above? (the GT3071 (.63 ex internal gate) or the GT3076 (.86 internal gate). 2. What size compressor cover should I be going for? Is .7 too big? 3. General opinions on anything at all? 4. What is the difference between the 3071 nad the 3076 other than the wheel sizes? One has more top end maybe? If anyone has any opinions or ideas - share them here. I'm more than willing to post up befor and after Dyno results, and changes etc. Here are some compressor maps of the two turbos - does anyone know how to read them properly? Feel free to m paint them explaining lol. I'd love to know this! Also, Just adding that I've now decided that I'm only chasing anything less than 300rwkw. 280rwkw would be so nice.

lets get to this then eh?

I have GT30r with a .7 Compressor cover and a .63 eh housing, and I needed two 10mm spacers.

What car was it originally fitted to? A Series 2? Can I please have pics? - paceys[at]gmail.com

pics of the grill?

PACKAGE DEAL! User: The Mafia Car: 1996 R33 GTS-T (Series II) Front Seats: Outside M001 (Black) & Inside M0010 (White) Black Double Stitching All Over Please Rear Seats: M001 Outside (Black) & M0010 Inside (White) Black Double Stitching All Over Please Wrinkle Front: No Wrinkle Rear: No Logo Embossing Front: Yes (Nissan Logo) Logo Embossing Rear: No Handbrake Boot: Yes, M0010 (White) with White Double Stitching Please Gear Stick Boot: Yes, M0010 (White) with White Double Stitching Please Centre Console: Yes, M001 (Black) with White Double Stitching Please Parcel Shelf: No (Does this reduce the price?) Door Trims: Yes, M0010 (White) Postage: Yes, Mackay, QLD

Hi Mate, If you are willing to post the Rear pods to QLD (at my expense of course) then yeah I am very interested. I'd really like pics of them though, or ones that are the same. (Lol only cause I am not 100% sure what they are) I'll either be back to read your post at lunchtime or after 5pm tody. pics to paceys[at]gmail.com thanks!

if the buyer falls through let me know

mate, I want the Front Grill. I want first dibs!! If its a Series II Front Grill, then its mine! Get back to me ASAP please!!!!

can I have the rear pods only?

let me know if you aren't having any luck. I tried pauls wiring diagram and blew about 3 10 amp fuses - scared the shit out of me, I thoguh I blew the powerfc. I could take a photo if you want.

no offence man, but those leakdown figures are bad. Mine was no more than 3% after 100,000km, and 10,000km of that was with a GT30 at 18psi, and 40,000km was with the standard turbo making 210rwkw with toluene at 13psi. All cylinders were above 160psi - but your compression is ok...Jus the leakdown...its not good...Well thats just me. You might want to get a rebuild before you start moving to cams etc. You'll get HEAPS more power by putting in forgies, rods, and lowering the compression a tiny bit to run more boost. Cams won't do that much difference at this stage, but make your motor wear a little quicker.

at those prices, I'm very very interested. Someone hurry up and test the unit! Hey Bassjunky - Check with sydneykid - he likes to test this sort of thing.

I'll definately be interested after the testing is completed and the results are put up. You might want to message Sydneykid - earlier in this thread he was interested in testig the original group buy plenum. Maybe he'll try this one?

the boost solinoid actually bleeds off air pressure so that the wastegate is harder to open and requires more pressure.

haha my stocker is running with 18psi of boost on a GT30r and its still going strong.

Nope - I'm running a Powerfc and it still does it. Its not the ECU - Its the AFM that causes the problem. It measures the air, the ECU puts in fuel to match, and then the BOV leaks it on idle. (because since the Plenum is on vacuum on idle, its enough to pull the BOV open a little bit) and yeah, air leak. Hence the rough running.

a few vs about 5,000,000 that have problems its pretty straight forward what happens. Your car runs like crap because a atmo BOV is not suited for cars that run a AFM. Oh, and yeah, my comment about searching still stands, because there is 11 millions threads about this. They even have replies from people that claim to have it working properly! ...........

do you take paypal or credit card payments?

http://www.skylinesaustralia.com/forums/in...showtopic=15420 Its right at the top as a sticky.

holy shit, did you do a search? This topic is covered about 10 times day. But To sum it up - You have an AFM. Put an Atmospheric BOV on there to try and sound cool and you won't because your car is stalling all the time.

I want a Series II Front Grill too. Please let me know!

do you have the SII Front grill?

I'm interested - But I want a pick and postage

and good luck to anyone that tries to fit that to a R33 Series II. I have one, and its a piece of junk. The asshole that sold me my car sent me that...waste of tiem and postage. GTR grill my ass. Its definately not a GTR grill.