Tony1981

Hey guys, I have a set of GTR Injectors mated to an RB30E stock fuel rail - I used these injectors on my RB30ET engine but have now gone a different route and no longer require them!!! For sale: GTR Injectors & R31 RB30 fuel rail Item Condition: Good used condition Price and price conditions: $250 Contact Details: PM me or email - [email protected] Location: Canberra Delivery & Conditions of Delivery: I will post at buyers expense - wouldn't be more than $20 Aust Wide

Just curious about manifolds as well Cubes, those turbo's dont have internal gates and I cant fit in a high mount manifold - absolutely no way does it fit under the bonnet of my Z, Are you modding the stock low-mount and sticking a blow-off valve on top?

Mine recently made 302rwkw on 17psi. 200rwkw by 3.5k and 256rwkw by 4k. The cams really woke the motor up. I must be dyslexic as I typed 265rwkw at 4k in other threads :S. Its actually 256. Its called a transposition error, you can tell because the difference is divisible by 9, ie...265-256 = 9 or example.........1170 or 1710, diff = 540/60 = 9, whenever the difference is equally divisbled by 9, its called a transposition error, common mistake in bookkeeping - I studied Commerce at UNI :-) And surprisingly as power is so linear traction problems are very little. Not lag lag lag and then hard snapping power delivery.. Just brute mid range when you put your foot down. Thats exactly what I am looking for, for the moment I am running an N/A RB30 5spd, and old uni'd half-shafts and 27spline'd stub axles, dont want the power delivery to come slammin on at 4000rpm!!!

Cubes, I am need of a turbo for my conversion and I was thinking something like this would be good, http://www.turbobygarrett.com/turbobygarre...T30/GT3071R.htm With a .63 or .82 A/R, Thats not to small is it?

What do you mean by into R&R? Well I guess no matter which way you look at it the stock ECU isnt probably going to be a long term option stock with the RB30 bottom end, even if you do go with a stock turbo, injectors and AFM, Guess a more straight foward option would be to use the RB25DET harness, ECU and then plug in an APEXI or something like that!!!

Yeah been reading and it looks as if the R33 cant be re-mapped and I wouldnt be able to use the R32 ECU as I am keeping the VCT, Oh, Autronic's are expensive!!! But if I used the R33 turbo ECU, injectors, AFM and loom and kept the boost low, like 8psi - the ECU should be able to run that shouldnt it? I would guesstimate that to be around the 180-200rwkw with the RB30DET engine running the stock R33 RB25 turbo - or is the stock R33 turbo ECU incapable of this?

My RB25DE didnt come with the wiring loom - so would have to grab one, Just curious how I would tell which R33 RB25DE wiring loom to get? There is a series 1 and series 2 R33 RB25DE right? Then there would obiviously be a harness that suits the N/A and Turbo engines respectively, My RB25DE engine/head is from a 1993/4 R33 (I think) but is there anyway I can make sure I purchase the correct wiring loom? or does it really matter? I assume the turbo harness has stuff like a knock sensor, whereas the N/A loom wouldnt, Also - I would probably want to use RB25DET injectors and RB25DET turbo ECU

RB30ET is already in there :-) - making 173rwkw on 14psi, cant remember what torque figures I was making, certainly more than the old L26, but certainly less than what the RB30DET seems capable of - but your right, I have gone reasonably easy on the gearbox but starting to feel notchy and make noises!!! You can fit the RB25DET gearbox just have to re-locate the mounts in the transmission tunnel, not a big issue, just a little fiddly really, actually not a problem in the 240z as the gearbox mounts arent in the transmission tunnel like they are in the 260z - half-shafts and stub axles are more of a concern, but your right Adriano start off with small boost and then when have built a more bullet proof rear end run more power through it, "PS there isnt too much work involved in fitting a complete skyline rear end, just need to be picky with your wheel offsets." Yes, there is unfortunately :-)

Its all in a 260z, so power actually is an issue - half shafts (good old UNIs) and stub axles (27 spline) are supposed to be quite the weak point and unless I cut out the original gearbox mounts all I can run is the skinny RB30E or RB20DET gearbox, So realistically, unless I make some improvemets in the driveline I will be limited with what power levels I can chase - Think going for much more than 175-200rwkw would be pushing my little Datto to its limits!!! Which I guess means I am in luck, that kinda power looks like its easily achievable with running 8-12psi, and well below 5500rpm - that should allow for the RB30/25 engine lasting forever!!! "I have an RB25 turbo on my 25DE/30 (not a standard bottom end though). It makes 12psi by 2200rpm, 183rwkw @4600rpm but chokes the engine up at about 5800rpm so badly that by the time it gets to the 6800rpm limiter it's only making 67rwkw!" I am probably safer with it spooling up a bit lazier than that, because quick snapping force is going to break things - just dont want it as lazy as it was before with the EBAY T3/T4 thing, I wont be chasing big HP in this car, because even if I do fit an R230, get custom half-shafts with a set of 35 (maybe even 41) spline stub axles - how the f#ck will the car lay that kind of power :-)!!! Rwd with (if I am lucky) 235's on the rear, probably just sitting there spinning the rear wheels until the tyres burst :-)

Yeah I was thinking of using a stock R33 RB25 turbo or the turbo from the VG30DET, I wont be chasing big HP, more daily drive-ability!!!

Thats for the stories guys, certainly put my mind at ease!!! Have a few questions for you guys, What is this engine like to live with everyday by just slapping the RB25DE head onto the RB30E engine? Is it a pig off-boost? Also, what turbo's are you guys running with the RB25 head slapped onto a stock RB30E N/A engine? Guess this sorta relates to the "off-boost" question - but you use a stock RB25 turbo might come on boost at 2000rpm and "off-boost" wont really exist :-), Just had a pretty ordinary experience in the past with slapping an EBAY T3/T4 turbo on the side of an RB30 n/a engine, did the right things, R32 GTR Injectors, re-chipped ECU, but the end result was just ordinary, doey as down low, didnt come on full-boost (14psi) until about 4200rpm, just want to avoid the same sorts of pitfalls - because they are expensive :-)!!!

Actually got a quote of only $210 for a set of ARP ones today - that sounds cheap :-), pretty funny the retail prices in Canberra sometimes, almost amazing really :-), I was probably just going to go with geniune RB30E items, or is that being just a little bit to cheap?

Isnt shot peening a process basically sand-blasting the rods with plastic instead of sand? Apparently there isnt anyone who can actually do it in Canberra anyways :-), Got some prices and I think I will not bother with the shot peening, dosent seem like it is worth the expense, For $280 - get the block decked 1-1.2mm (as much as it is required to get the pistons flush), chemical clean, new welsh plugs, hone the bores and drill a tap a 2nd hole for the 2nd belt tensioner, $280 - for balancing the crank, rods, pistons, balancer and flywheel/clutch, Then re-use the RB25DE pistons, RB30E rods and crank with new ACL bearings, Pistons rings,

Well with that sort of expense can build one to suit a turbo and aim for 400rwkw, my little 260z would have a heart attack with that much power in it, but yeah was thinking forged rods and pistons for an N/A build wouldnt really be worth the expense :-), How much does shot peening cost? just approximate prices, Just reading through some older posts and I think it was you, who got a quote of $80 for a crank collar to use the RB25 oil pump? - I was quoted $150 by a local engine builder - just want to have a rough idea about what is an appropriate cost for shot peening my conrods, Ages ago I bought an RB30 twin throttle bodied manifold where someone had basically slapped two RB30E throttle bodies onto the stock manifold - cut out the entire front, welded on a new front piece, welded on two flanges to mount the TB's and connected them via a rod - so when you open one throttle, both open at the same time and same rate - is this what you fellows are doing with the 150-200rwkw RB30DE engines or are you still running the stock manifold and throttle bodies???

Yeah going to get new rings, new bearings, new head gasket, new head bolts, new waterpump, new thermostat, pretty much everything will be new except the pistons, rods and crank, With a set of forged rods or getting the stock ones shot peened, how far can the RB30 rev? how far past 7000rpm??? If I spent $750 on a set of rods and bolts for an N/A application I would want to be able to rev its a@s off all day everyday :-)!!! How do the stock RB25DE pistons hold up to this sort of power? I was thinking of using the set out of the RB25DE motor I grabbed the head off,