Jump to content
SAU Community

Is It Possible To Do A Turbo "upgrade" For A Gts-T Over The Stock On The Cheap?


Recommended Posts

I'm looking at changing my R33 gtst Turbo soon (mine is sounding whiny). I figure while I'm at it I can try to get something better than stock turbo but I doubt it is possible on very tight budget?

What are my options, If prefer to keep it close to $500. The Cheaper the better. If an upgrade is not possible I'll settle for a similarly performing replacement unit

There are a few $200-$400 dollar turbos online that suit rb25.

But I'm a little confused how aftermarket turbos compare to a stock one.

I see a lot of turbos saying they are rated up to 430hp etc or 550hp but they dont all tell you how much PSI they can handle safely

I know 10psi is the safe limit for a stock turbo but how does it compare to some cheap ebay turbos?

Has anyone had any experience with this one?

http://www.ebay.com....#ht_4720wt_1141

Edited by sadr33
  • Replies 87
  • Created
  • Last Reply

Top Posters In This Topic

$500 is not possible. Ebay is not possible - actually Ebay is possible, as long as you don't expect for $400 paperweight to late more than 15mins.

You need:

1. ECU / Tune

2. AFM

3. Injectors

4. Exhaust/dump pipe

5. Hypergear turbo

All of that add's up to well over $500. In fact it adds up to $4,200 if you by some stroke of luck have no other issues and shop around... Which is unlikely with a 150yo car, so allow $5,200 as a starting point for a turbo (+supporting mods).

$500 is not possible. Ebay is not possible - actually Ebay is possible, as long as you don't expect for $400 paperweight to late more than 15mins.

You need:

1. ECU / Tune

2. AFM

3. Injectors

4. Exhaust/dump pipe

5. Hypergear turbo

All of that add's up to well over $500. In fact it adds up to $4,200 if you by some stroke of luck have no other issues and shop around... Which is unlikely with a 150yo car, so allow $5,200 as a starting point for a turbo (+supporting mods).

Ebay ones are all I can afford. I have heard some of them last fine if not thrashed, I am not planning on being too harsh on the replacement turbo. Ill be happy if it can handle 10psi.

But since you mention all those upgrades. Yup I realise there are MANY things to upgrade before you upgrade the turbo normally. But since I'm in need of a a new turbo it changed my priority. And isn't worst case scenario if you fit a better turbo without all those upgrades slightly less power down low and more lag?

I'm ok with that in the meantime.

Only Current mods are 2 stage electronic boost controller.

255lph fuel pump

Nismo FUel pressure regulator

Yellow jacket coils with Bcpr6es.

I haven't really experienced knocking or fuel cut. I don't think I am running rich or lean. So if I haven't hit a limit on these I dont see the point of upgrading them for low boost applications especially since I need a new turbo first.

Look for a 2nd hand hiflow in the for sale section.

Get a quote from hypergear on here to repair/hiflow yours

Ill have a look around. I had a look at some high flow prices they seem to be about 1.5k. Wouldn't mind a second hand turbo off somoene who is upgrading but id prefer to hear it running in a car first otherwise what guarantee do you have it wont be blown?

At least with an ebay turbo you have a 1 year warranty, or so it says.

Anyway, I know many sau members hate ebay turbos but humor me and tell me how much modification do you need to fit a non standard turbo such as a kkr480 into a r33 gts

For example this

http://www.aliexpress.com/item/KKR480-T480-Nissan-Silvia-RB25DET-RB30ET-2-5-4-0L-T3-A-R-50-A-R/617283830.html

Your best bet (and only bet really on your budget) is to get a replacement stocker from someone who is upgrading. You should have put the money for the electronic boost controller and Nismo fpr in a savings account towards an upgrade (neither is making your car faster).

You will not be able to run anything but a stock turbo unless you tune it.

the bare bones minimum will be about 1700. That will include sending your stock turbo to hypergear and getting it highflowed, then having your ecu remapped by toshi.

with that you will be lucky to scrape in at 200-220kw. If u want more u will need the rest of the bells and whistles.

No remap = blown motor.

Your choice. Whack on an eBay turbo and watch it all blow up in your face or actually face the music with the commitment you made buying a 20yo performance car.

I'd be leaving it all alone until you can afford more then a "ebay turbo" Even then, like the others stated above. You'll find alot more problems once you start changing things over that you didn't account for.

$5k can turn into $25 very quickly....... Trust me.

^ Exactly.

$450 forged pistons = $3,500 mostly assembled motor (me - almost there now).

$900 turbo upgrade = $5,000 running on the car (all of us at some point).

It's never what it seems, and you should ALWAYS put pen to paper before you do ANYTHING.

I've seen some stock upgrade turbos on eBay from a shop in NSW, 2 year warranty, 100% positive feed back, they're $400 just a stock stronger highflow turbo. They seem alright and everyone has been giving them good feedback just saying I don't think a cheap turbo is IMPOSSIBLE is all

I've seen some stock upgrade turbos on eBay from a shop in NSW, 2 year warranty, 100% positive feed back, they're $400 just a stock stronger highflow turbo. They seem alright and everyone has been giving them good feedback just saying I don't think a cheap turbo is IMPOSSIBLE is all

Yes, it is possible to buy a cheap turbo. No one is disputing that. It's the other costs associated with correctly running the turbo without the engine going bang that turn it into an expensive excercise. (tune, ecu, injectors, labor etc)

Edited by wedge_r34gtr

On the extras topic, does the car need to be tuned just to run a high flow on the same boost as stock?

Id be doing a tune for any major change to the engine, Fuel, air components of the car. So yes.

on the cheap this is what id do, buy secondhand gt30 and get a turbo shop make it fit into your exhaust housing,

then get a safc and have it tuned upto 200ish kw or just checked on dyno for safety, run it on about 6-7psi

turbo $800 plus $200 for machining

dyno check $200?

then later safc $300 and maybe find a wiring diagram or google how to fit it and tune it for $600 to get 240kw??

Edited by SliverS2

On the extras topic, does the car need to be tuned just to run a high flow on the same boost as stock?

boost is not relative.

new turbo = tune.

I have a bigger turbo and stock injectors and ecu tune.

I cant turn the boost up or it starts missing. Not good for the motor.

At the very least you need a retune to make it run safe.

A safe tune without supporting mods is much less power than you could have.

The cheap way to go fast is get a bike.

The cheap way to go fast is get a bike.

Just sell the car and buy a barina...

Same, same.

When you can't win at cars, buy a bike and become traffic light GP champion.

haha

reminds me of a group i used to be an admin of- "All that money on your car and my stock bike is still faster"

I love my modified skyline but f*k me, get on a jap superbike and all relevance of 4 wheels becomes distant (except for safety)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Nah - but you won't find anything on dismantling the seats in any such thing anyway.
    • Could be. Could also be that they sit around broken more. To be fair, you almost never see one driving around. I see more R chassis GTRs than the Renault ones.
    • Yeah. Nah. This is why I said My bold for my double emphasis. We're not talking about cars tuned to the edge of det here. We're talking about normal cars. Flame propagation speed and the amount of energy required to ignite the fuel are not significant factors when running at 1500-4000 rpm, and medium to light loads, like nearly every car on the road (except twin cab utes which are driven at 6k and 100% load all the time). There is no shortage of ignition energy available in any petrol engine. If there was, we'd all be in deep shit. The calorific value, on a volume basis, is significantly different, between 98 and 91, and that turns up immediately in consumption numbers. You can see the signal easily if you control for the other variables well enough, and/or collect enough stats. As to not seeing any benefit - we had a couple of EF and EL Falcons in the company fleet back in the late 90s and early 2000s. The EEC IV ECU in those things was particularly good at adding in timing as soon as knock headroom improved, which typically came from putting in some 95 or 98. The responsiveness and power improved noticeably, and the fuel consumption dropped considerably, just from going to 95. Less delta from there to 98 - almost not noticeable, compared to the big differences seen between 91 and 95. Way back in the day, when supermarkets first started selling fuel from their own stations, I did thousands of km in FNQ in a small Toyota. I can't remember if it was a Starlet or an early Yaris. Anyway - the supermarket servos were bringing in cheap fuel from Indonesia, and the other servos were still using locally refined gear. The fuel consumption was typically at least 5%, often as much as 8% worse on the Indo shit, presumably because they had a lot more oxygenated component in the brew, and were probably barely meeting the octane spec. Around the same time or maybe a bit later (like 25 years ago), I could tell the difference between Shell 98 and BP 98, and typically preferred to only use Shell then because the Skyline ran so much better on it. Years later I found the realtionship between them had swapped, as a consequence of yet more refinery closures. So I've only used BP 98 since. Although, I must say that I could not fault the odd tank of United 98 that I've run. It's probably the same stuff. It is also very important to remember that these findings are often dependent on region. With most of the refineries in Oz now dead, there's less variability in local stuff, and he majority of our fuels are not even refined here any more anyway. It probably depends more on which SE Asian refinery is currently cheapest to operate.
    • You don't have an R34 service manual for the body do you? Have found plenty for the engine and drivetrain but nothing else
    • If they can dyno them, get them dyno'd, make sure they're not leaking, and if they look okay on the dyno and are performing relatively well, put them in the car.   If they're leaking oil etc, and you feel so inclined, open them up yourself and see what you can do to fix it. The main thing you're trying to do is replace the parts that perish, like seals. You're not attempting to change the valving. You might even be able to find somewhere that has the Tein parts/rebuild kit if you dig hard.
×
×
  • Create New...