Zoid's Gts Build

[DJRIFT]

Neo's are decent, but it would be an added pain in the ass, Your plazmaman wont bolt up nor will your injectors, they run less duration and more lift plus dual stage vct, so it will most likely cock up your tune. That said better piston/ring land and combustion chamber design with lower comp and of course solid lifters makes them pretty reliable especially if you ran it on R33 electrics and on an R33 76deg thermostat but still you're paying a fair amount for an unopened second hand motor generally with unknown history. I'd go a stocker cheapo 33 or a basic built motor (hint, hint) for sure.

It's going to need a retune regardless if he put the same engine in. The engine is dead from detonation = tune needs adjusting. Engine swaps and tunes are like new girlfriends just because your pecker is the same doesn't mean she will take it the same way.

The inlet stud pattern is the same. So the r33 inlet plus plazman and injectors will swap strait over. Can't see any negatives. Not to sure they are lower compression either. Higher if anything.

Looks like we could do a group buy on engines at the moment. Mine is not so healthy after today.

Edited November 25, 2012 by DJRIFT

[zoidbergmerc]

Yeah neo is 9.5:1 and s2 rb25det is 9:1.

That's sad about your motor damo why'd you do it for?

And yes. If i got a new motor I'd have the tune looked at. While all the engines are equal, some are more equal than the others.

Plus it was the fuel filter clogging up that cooked it, not the tune.

[Mr. Untouchable]

Just stick a 33 25 in it nowelly. Just get one that has healthy comp and obviously one that has as much stock stuff still attached as possible that doesn't look like its been just put back on. Put your sump on it and cam covers and with the money you save buy a accusump setup if you want a extra fail safe. Keep it at 7500 and love life. And from what I can see, and from what you have told me, that motor build/tune is shithouse. Woeful. Oil problems from day dot, then that. Compared to say rusty's car, which he took in, had the motor pulled, built, put back in and tuned to similar power as yours and has been drifted and daily driven for years now and the bill was about 7k or something and has yet to put a spanner to it. Edit, just saw the fuel filter thing, still, undiscovered Amazonian tribes knew you'd have oil dramas with no restrictors and a good sump etc.

Edited November 25, 2012 by Mr. Untouchable

[SKiT_R31]

My bad, for some reason I just thought they had less comp, my R33 RB25's have always registered ~ 160psi accoss the board with my forged 8.5:1 being flat 150, then my R34 neo wavered at ~ 145-150 so it must have just been quite tired .

http://www.importworkshop.com/files/manuals/nissan/R33_engine_man.pdf

http://www.importworkshop.com/files/manuals/nissan/R34_service_man.pdf

Google does say 9.5, the manuals don't state the comp though, and interesting (or lazy of them) their compression test, limit and variation are the same on the neo and normal rb25 .

[zoidbergmerc]

Yeah I found out the problem with the tune, there was some stray wires behind the dash shorting out making it forget things! That was really annoying and had me paranoid the whole time.

Stock R33 RB25DET is on the cars.

Unless someone has a head, pistons, rings and bearings for sale?

Or maybe just a head, I've got a couple of 30 blocks lying around here.... (strokes beard)

[toffy]

just throw your head on a 30 then , would be fun while it lasts!

[zoidbergmerc]

Did you see my head toffy?! It's toast!!!

[Clandestine]

Did you see my head toffy?! It's toast!!!

For science.

[pipster11]

Rb30et!

But seriously, auto 25neo would be tops

Autos run less stock boost and less likely to be fubared

[zoidbergmerc]

you should donate the neo out of your Stag, Tom

[pipster11]

awd is no good to you

also, its a manual one

also also, qld to tas is a long way to Flintstones a car!

[sav man]

An auto might not have been flogged, but it's probably done 3 laps of the world on the delivery oil.

[zoidbergmerc]

An auto might not have been flogged, but it's probably done 3 laps of the world on the delivery oil.

Three laps of the world, best.

[pipster11]

would only just be run in by then

[zoidbergmerc]

Earth circumference = 40,075km

40,075 x 3 = 120225

Maybe....

Edited November 28, 2012 by zoidbergmerc

[RUSTY_01]

Bummer mate, I'd chuck in a import /wrecker engine ! And if anything just give it a basic freshen up you've got the bolt on bits, don't push power to hard it's not necessary I don't think ! reliabilty is the key to fun!!! Not huge power

[zoidbergmerc]

That's one of the plans Rusty, just get a stock\mild RB25 and throw my turbo\supporting bits on it, just get back out there and start skidding again before the car\project gets stagnant.

[tobs_r32]

Hey Zoid, I bought a full RB25 motor inc loom, ecu, ancillaries etc. for around $1700 to my door 12 months ago from these guys on the mainland Fuji Auto Centre, perfect condition engine, has been running flawlessly for prob 15,000ks now. The guy to speak to is steve, they get crates from Japan quite often and are awesome to deal with, most of their stock will be on here http://stores.ebay.com.au/fuji-autocentre but give them a bell on 0397615203 to see what they have.

[pipster11]

http://www.ebay.com.au/itm/R34-SKYLINE-GT-T-SERIES2-RB25DET-NEO-ENGINE-/330831891106?pt=AU_Car_Parts_Accessories&hash=item4d071e0aa2

buy this then win at life!

[toffy]

Did you see my head toffy?! It's toast!!!

would the headgasket and valves still seal?