Turbo Choice Gts-t

[Hilton_K]

Hello,

After some advice on turbo setups for R33 GTS-T Series II. Will be chasing around 220-250rwKW with more of a focus on torque than outright power. This car will be street driven and used on the track, so I need the car to be very responsive with a decent sized power band, cams will be used as well. Oh and of course a 3inch exhaust, would prefer a turbo to fit on standard exhaust manifold but I know this would limit me.

So hit me with some turbo (both standard and aftermarket manifolds) and cam (if required) setups :-)

Cheers.

[cerci]

maby the hks 2530 or 2535 to push that power

ever just thought of hi flowing ur standard 1??

and for cam

i had a hks adjustable slide cam pully, did wonders when set right

i got to 210rwkw on standard turbo at 12.5ps on my r33gtst i, without cam tuner said i was lookn at 200kw

[Abo Bob]

Check the RB25 turbo upgrade thread:

http://www.skylinesaustralia.com/forums/in...showtopic=55845

That said, a 2530 with cams might be nice or for a bit more power a GCG highflow then up to a HKS GT-RS.

Tomei Poncams are the easy option for an upgrade in that respect. Proven to work. I went for the 260degree type b.

[WogsRus]

For a good cheep alternative, i would go for a KKR-430 or 480, both good for well over 430hp. and they are only $800, recived a great review in thelates ZOOM magazine.

[paulr33]

the KKR is too laggy and wouldnt be suitable. a GCG hiflow should be perfect with some cams. will get good average power

[Roy]

Plenty of ppl will tell you different things, most of it will all be base don their own personal experience.

My only 2c will be where possible try and make sure the turbo you use is ball bearing and uses the std manifold, as it saves you haveing to spend a lot of time and money trying to make custom heat shields and insulate the engine bay ancillaries from all the heat the turbo will throw out when you are at the track

[BOOSTD]

Garrett GT3071R hands down, spools 1000rpm earlier than a HKS GT3037

www.atpturbo.com will tell u all you need to know.

Discopatato is the man to talk to but he will most likely tell u the same.

[Roy]

But that requires new manifold, an external wastegate...a hell of a lot of attention and expense for insulation of it and protection of all the engine bay ancillaries. Not saying its a bad choise, but a bit overkill for the power he is after .

[R31Nismoid]

For a good cheep alternative, i would go for a KKR-430 or 480, both good for well over 430hp. and they are only $800, recived a great review in thelates ZOOM magazine.

Plus the $500 of fitting, and the cost of the "special" dump pipe they require as its not a direct bolt on upgrade

All of a sudden a dirty cheap $800 turbo is now costing upwards of $1500

for a non-ball bearing unit, thats an poor upgrade cost.

Not to mention the poor wheel choice which makes them about as responsive as a GT42.. but make well under half the power.

Shocking upgrade and wouldnt reccomend someone who is after proper performance.

I do believe the first line had "with more of a focus on torque "

Using a KKR turbo will not achieve this in any way.

Abo Bob hit it on the head

2530 with cams might be nice or for a bit more power a GCG highflow

cheers

[Roy]

A 2530 isnt all that different to the std turbo. (yes i know it will make a bit more power, and probably come on a little harder then std as well...but in the world of turbo upgrades it is pretty close to what the std turbo will do)

Thats not to say its a bad choice. Just that i would perhaps think twice about throwing $900 cams at en engine using a turbo as small as the 2530.

That said a friends R33 use to use a 2530, it had baby cams and a greddy manifold and it was still the best, and probably one of the quickest street cars i have been in...it was also damn quick as the track the couple fo times he was good enough to swap keys with me.

[bazr33]

Im putting on a hiflow turbo, with a 270 thrust bearing

plain bearing turbo, might be bush

i have 201rwkw on standard turbo, exhaust split dump, hiflow cat

boost controller, FMIC and apexi power fc

i still doubt its tuned properly yet, set on 12 psi

will be whackin boost up to 15 should see 215rwkw

Also puttin on walbro fuel pump

i have a z32 afm, but have been told i dont require it for what i have.

just i was interested in doing track work aswell occassionally

so i'll see how i go.

Seriously do those hks cam gears make a difference and are they worth it?

[Roy]

Im putting on a hiflow turbo, with a 270 thrust bearing

plain bearing turbo, might be bush

Any more info on where this turbo came from? Id say think twice about it, as only havign a 270deg bearing will surely make it even more unreliable when you start increasing the shaft speed and going to the track...is it even water cooled?

I think if upgrading a turbo it is nice to try and get ball bearing, but i wouldnt be too concerned if its not. But i would want to at least make sure it has 360 thrust bearings for durability. I know my turbo has now done about 30,000kms on the street with about 1200-1500kms on the track (10-14 track days) and last time i had it off to change a gasket it still appeared to be ok with regards to shaft/nearign float. Just keep the good supply of cool oil to it i suppose

[paulr33]

you wont make 215rwkw on 15psi with the stock turbo, its past its effiency zone

[bazr33]

thats why i'll be upping the boost with the hiflow turbo , not the stock

the hiflow r33 turbo, is water and oil cooled.

the turbo has just recently been rebalanced, and two thrust washes, put in, for less movement, or slippage i guess?

And i believe theres a oil restrictor on the turbo somewhere, which can be removed?? to allow more oil to flow through, hopefully to make it cooler.

I'll see how it goes, but having done that, doesnt bother me if it blows up, i just like the fact it can be rebuilt for like another 200 bucks

then have the choice puttin a 360 thrust bearing in, if it doesnt work out.

[R31Nismoid]

turbo's have oil restrictors in them for a reason

And a rebuild kit is $375... plus balancing... last i checked.

Pretty expensive experiment

[bazr33]

r33 turbos apperantly stock are ball bearing

Someone had done a plain bearing job on my hiflow. (cheaper)

Longer spool time, more heat, But also needing more oil to cool down the temperature. Depends also what boost your running

but i have heard it would be a good idea to remove the oil restrictor.

But with what im running, and not running 15psi 24-7, i shouldnt have to replace the insides soon.

But i think its fair to say, if it does blow, i will know how long it lasts

what boost not to run, and not to put a 270 thrust bearing in again.

Also id rather pay the $375 for a rebuild then buying a whole new turbo, or rebuild with ball bearing.

With what im doing, i should be right, mostly street use, occassional track day, and have a crack at drifting, haha! why not.

I wasn't planning for it becoming an experiment, but if it blows, she blows.

Sorry for interrupting the thread, but was just saying that i was doing a hiflow turbo in mine.

and i'll let ya know how it plans out. And if im going to be 375 bucks out of pocket . also power output and response.

[skylinecouple]

I have GCG hi-flow,cooler full exhaust,EBC and AVO hi-flowed injectors.Oh, and PFC. 220kw and brilliant torque.Very responsive.

Just wish I didn`t put that damn ceramic clutch in.

[bazr33]

Skylinecouple

what have the injectors been hiflowed too?

Do you have a upgraded fuel pump?

Fuel economy?

Just that im at that kind of stage, and just wondering what to do next

What boost are you running aswell?

[skylinecouple]

I`m running the smaller of the bosch pumps, a 934 or something or other. 14.5lb boost.Stock air box but cold air feed into snorkel and k&n filter panel.Injectors are 20% larger and flowed to within 1% of each other.Only tuned over full power map and couple of light load areas.Fuel consumption is around 400ks per tank even with a couple of squirts.

[silva33]

HKS 25235 on an RB25 is fantasic... on the street it pulls hard with stuff all lag and on the track it was great as well, even on my low boost setting a few 'exotic' cars couldnt keep up down the straight..

and fuel efficiency is pretty good as well.. i dont have cams either, just all the fuel supporting mods..