Jump to content
SAU Community

Recommended Posts

Originally posted by franks

...and once you've owned and raced laggy street cars with big turbo's, its hard to go back too :uh-huh:

my WRX had a TD05 turbo from an MY94 WRX which was large. Subaru went to a TD04 for a reason....lag is your enemy in a street car!!! :(

I'd agree with that one.

I've got a t04e (on an RB25 though)

it hits 9.5psi at 4300... and holds firm till 7000rpm. and makes 190rwkw.

makes boost of approx 4-5psi from around 3500.

So i'm happy with that.

But i see FAT32 what your saying about pushing you into your seat.

If i get traction i get thrown right into my seat only running 9.5 psi.

Soon we get 14-15psi or so running and see what happens.

But you'd notice the 'throw' more on an RB20 I reckon because they rev quite hard.

I had an RB20, with the stock turbo... it was fast and rev'd great but it didn't push you back like you said the t3/4 did.

  • Replies 111
  • Created
  • Last Reply

Top Posters In This Topic

Why would someone put a GT2530 on a rb25 when you need two for an a rb26, they are way to small, those idiots at GCG should not have sold you that turbo, t3/t4 is the only way to if you want to make some real kw's

Have you been for a ride in an RB25 with a 2530? If you have you would see its merits.

If you have been for a ride in an R33 with 2530 and you dont think it makes for a quick car then id hate to be the one paying for your car's mods.

Well all,

After much buggering around I resolved a few of the problems and most were NOT the turbo's fault much to my surprise. The turbo ( R34 GT-T Compressor & Turbine Housings with a GT2530 core ) makes boost early and will hold more than 1.3bar up to rev cut at 8,400rpm so I'm not complaining at all.

I've yet to get the car back on the dyno and do the final tune but when I do I'll be sure to let y'all know how it worked out so future players won't make the same mistakes I did.

I'd also like to say that GCG helped me along the way and were still willing to help further, so no bad words for them.

I had a split gasket on the turbo outlet and didn't have enough thread on the wastegate actuator to preload the actuator enough to keep the wastegate closed under boost so I fixed them and now it seems pretty good.

I also fitted a split dump pipe off the turbo with a divider to seperate the primary exhaust and wastegate gasses which helped.

Originally posted by turbogtst

Why would someone put a GT2530 on a rb25 when you need two for an a rb26, they are way to small, those idiots at GCG should not have sold you that turbo, t3/t4 is the only way to if you want to make some real kw's

That is one of the dumbest, unsubstantiated statements Ive heard on this forum for a long time. You successfully made yourself sound like the idiots you claim GCG to be... well done turbogtst, well done.

I strongly suggest you spend many, many, many hours searching these forums to soak up some knowledge, hard facts and others' personal experience before you think about posting again.

Originally posted by nissky

he wants 400rwkw....nah ;p

You betta believe I want 400rwkw but I know it aint gonna happen with this car & on my budget !!

Nissky, Next track day we'll go for a blat and see if I really NEED that 400rwkw:spew:

I wasn't talking about YOU spewing........probably be me :D

Brakes are EBC Rotors and EBC Greenstuff pads and some other basic mods. Also using Motul Synthetic Brake Fluid.

If you really want to see how the brakes work I'll take you out around Wakefield where the back tyres damn near come off the ground.

Originally posted by turbogtst

Why would someone put a GT2530 on a rb25 when you need two for an a rb26, they are way to small, those idiots at GCG should not have sold you that turbo, t3/t4 is the only way to if you want to make some real kw's

being the 5th person to quote you, ....

agree with turbo tits. What experience do you have to make such a claim? I would think you would have be pretty qualified to call the very popular and reputable GCG guys "idiots", when they've been involved with turbos for many years. Its one thing to state that you may "think" the 2530 is way too small, but to state "they are way too small" is pretty stupid, as is calling GCG idiots. As mentioned, Turbo selection is all about application, and not just about "real kws".

Sure you may be used to the response and peak power of big turbos, but for those looking for a completely streetable but still quick package, the GT2530 is an excellent choice.

your post isnt going to help anyone actually trying to research this turbo, as its unqualified.

how much power is your car making by the way, and with what turbo?

Go tell all the members who have upgraded to this turbo that its way too small, after all, you would know.

Joel,

So long as your seals etc are in good nick you can go ahead and use synthetic fluid. Keep in mind, it's synthetically manufactured but still has the same basic properties ( but much better of course ) so it should have no adverse effects on your brake system.

You just have to remember that when you change your fluid you've only changed one of the many facets of your brake system so you'll end up with a firmer pedal but MAY then transfer the problem to another place thus giving you the impression that the fluid has caused the problem.

Clint32,

Don't be surprised if you don't get a very good pedal after you change to Castrol SRF as quite a few people I know have found out. I've turned most people I know towards Motul RBF and since then none of us has had any problems.

From what I understand, SRF is great for big brake systems like ARP, Willwood etc but is just not suited to factory brake systems. I only believe this because I've seen it with my own eyes many times. Motul RBF is also cheaper :P

I changed my fluid to Caltex GP600, which is a DOT4 with temperature tolerances surpassing some DOT5 fluids. For example, its boiling point is 310 degrees whereas Castrol's Super DOT4 is 286. Some DOT5's boil as low as 300 degrees. Since it's not silicone based, you don't have to worry about it eating hoses. It costs around $35 a bottle.

This is the fluid recommended to me by Race Brakes in Sydney, and is the stuff they use on their rally cars. So it can't be that bad :P

Edit: wtf? I just noticed this thread was about 2530 turbos. how the hell did we get onto brake fluids? :P

Originally posted by JimX

I changed my fluid to Caltex GP600, which is a DOT4 with temperature tolerances surpassing some DOT5 fluids. For example, its boiling point is 310 degrees whereas Castrol's Super DOT4 is 286. Some DOT5's boil as low as 300 degrees. Since it's not silicone based, you don't have to worry about it eating hoses. It costs around $35 a bottle.

This is the fluid recommended to me by Race Brakes in Sydney, and is the stuff they use on their rally cars. So it can't be that bad :P

Edit: wtf? I just noticed this thread was about 2530 turbos. how the hell did we get onto brake fluids? :)

That would be Nissky's fault :P

The GT2530 in a T3 Bolt pattern will bolt on a GTST, but it is not designed to be for that car. With the GT25 turbine housing it is designed to be a mild upgrade for the SR motors

They are designed to be for a twin set up on a GTR.

This is why it is a very linear set up on your car.

You would need to run a GT2340 which would be somewhere between the 2530 and the t3/4 that GCG do. However closer to the t3/4

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



  • Latest Posts

    • I had 3 counts over the last couple of weeks once where i got stranded at a jdm paint yard booking in some work. 2nd time was moving the car into the drive way for the inspection and the 3rd was during the inspection for the co2 leak test. Fix: 1st, car off for a hour and half disconnected battery 10mins 4th try car started 2nd, 5th try started 3rd, countless time starting disconnected battery dude was under the hood listening to the starting sequence fuel pump ect.   
    • This. As for your options - I suggest remote mounting the Nissan sensor further away on a length of steel tube. That tube to have a loop in it to handle vibration, etc etc. You will need to either put a tee and a bleed fitting near the sensor, or crack the fitting at the sensor to bleed it full of oil when you first set it up, otherwise you won't get the line filled. But this is a small problem. Just needs enough access to get it done.
    • The time is always correct. Only the date is wrong. It currently thinks it is January 19. Tomorrow it will say it is January 20. The date and time are ( should be ! ) retrieved from the GPS navigation system.
    • Buy yourself a set of easy outs. See if they will get a good bite in and unthread it.   Very very lucky the whole sender didn't let go while on the track and cost you a motor!
    • Well GTSBoy, prepare yourself further. I did a track day with 1/2 a day prep on Friday, inpromptu. The good news is that I got home, and didn't drive the car into a wall. Everything seemed mostly okay. The car was even a little faster than it was last time. I also got to get some good datalog data too. I also noticed a tiny bit of knock which was (luckily?) recorded. All I know is the knock sensors got recalibrated.... and are notorious for false knock. So I don't know if they are too sensitive, not sensitive enough... or some other third option. But I reduced timing anyway. It wasn't every pull through the session either. Think along the lines of -1 degree of timing for say, three instances while at the top of 4th in a 20 minute all-hot-lap session. Unfortunately at the end of session 2... I noticed a little oil. I borrowed some jack stands and a jack and took a look under there, but as is often the case, messing around with it kinda half cleaned it up, it was not conclusive where it was coming from. I decided to give it another go and see how it was. The amount of oil was maybe one/two small drops. I did another 20 minute session and car went well, and I was just starting to get into it and not be terrified of driving on track. I pulled over and checked in the pits and saw this: This is where I called it, packed up and went home as I live ~20 min from the track with a VERY VERY CLOSE EYE on Oil Pressure on the way home. The volume wasn't much but you never know. I checked it today when I had my own space/tools/time to find out what was going on, wanted to clean it up, run the car and see if any of the fittings from around the oil filter were causing it. I have like.. 5 fittings there, so I suspected one was (hopefully?) the culprit. It became immediately apparent as soon as I looked around more closely. 795d266d-a034-4b8c-89c9-d83860f5d00a.mp4       This is the R34 GTT oil sender connected via an adapter to an oil cooler block I have installed which runs AN lines to my cooler (and back). There's also an oil temp sensor on top.  Just after that video, I attempted to unthread the sensor to see if it's loose/worn and it disintegrated in my hand. So yes. I am glad I noticed that oil because it would appear that complete and utter catastrophic engine failure was about 1 second of engine runtime away. I did try to drill the fitting out, and only succeeded in drilling the middle hole much larger and now there's a... smooth hole in there with what looks like a damn sleeve still incredibly tight in there. Not really sure how to proceed from here. My options: 1) Find someone who can remove the stuck fitting, and use a steel adapter so it won't fatigue? (Female BSPT for the R34 sender to 1/8NPT male - HARD to find). IF it isn't possible to remove - Buy a new block ($320) and have someone tap a new 1/8NPT in the top of it ($????) and hope the steel adapter works better. 2) Buy a new block and give up on the OEM pressure sender for the dash entirely, and use the supplied 1/8 NPT for the oil temp sender. Having the oil pressure read 0 in the dash with the warning lamp will give me a lot of anxiety driving around. I do have the actual GM sensor/sender working, but it needs OBD2 as a gauge. If I'm datalogging I don't actually have a readout of what the gauge is currently displaying. 3) Other? Find a new location for the OEM sender? Though I don't know of anywhere that will work. I also don't know if a steel adapter is actually functionally smart here. It's clearly leveraged itself through vibration of the motor and snapped in half. This doesn't seem like a setup a smart person would replicate given the weight of the OEM sender. Still pretty happy being lucky for once and seeing this at the absolute last moment before bye bye motor in a big way, even if an adapter is apparently 6 weeks+ delivery and I have no way to free the current stuck/potentially destroyed threads in the current oil block.
×
×
  • Create New...