Jump to content
SAU Community

Recommended Posts

Do I have to change the manifold for a T04?

I don't really need anything too big so the TD06 might be out... i only want a little upgrade... how big of an upgrade would this be?... i'd prefer to be able to keep the stock manifold for now...

GT2530 + 300zx T3 = int. wastegate?

Link to comment
https://www.sau.com.au/forums/topic/33365-t3-turbo/page/2/#findComment-670709
Share on other sites

  • Replies 48
  • Created
  • Last Reply

Top Posters In This Topic

Im not entirely sure, you may be able to use the standard manifold with an adapter plate for T04/TD06, depending on size, but I'd think it'd be inefficient.

It all depends on power goals, if you want a small upgrade a VG30 T3 or RB25 turbo is marginally better than the stock turbo. They're all internally gated so no messing around, more or less bolt on.

Link to comment
https://www.sau.com.au/forums/topic/33365-t3-turbo/page/2/#findComment-670901
Share on other sites

You do not need a big turbo to hit 12 seconds. Big turbo means big lag. Small turbo means little lag. You need a front mount intercooler due to more heat. You need to manage the fuel and air ratio. If you use a t28 with a outlet from s14 or s15 (about $88 US on ebay) and boost to .9 bar (or 1 bar with front mount)with stock fuel system and 3 inch exhast. I see no problem. You loose pressure with front mount intercooler. I have a greddy on my car. I got so good torque from it. A good upgrade is a S-AFC and get it tune at a dyno.

Link to comment
https://www.sau.com.au/forums/topic/33365-t3-turbo/page/2/#findComment-671188
Share on other sites

DJ, the 25's turbo is a upgrade from your R32's stocker (not smaller).

What is the deal with running boost increasing mods with the stock turbo? My buddy's S14 we are running with my old 20 (see "Old Platform" in sig for visuals) is coming up to 13psi now with only filter and 3" turbo back exhaust (no cat). Will we be able to upgrade to a FMIC without threatening the ceramic turbine since we are already close to 1 bar?

We were thinking of running a T3 turbo, like DJ was thinking about, with a steel impeller as an inexpensive safety buffer while we prepare the rest of the systems to accept a larger turbo later.

Link to comment
https://www.sau.com.au/forums/topic/33365-t3-turbo/page/2/#findComment-671972
Share on other sites

Ok, i've gotta break everything down as i read so that i'll understand.... lol

I realise i don't NEED a big turbo for quick 1/4's and i realise the bigger the turbo, the more lag... that's all kool... which is why i only wanted a small increase.

I am planning to put on a front mount before i up the boost so that's all good too...

So does that mean i use a T28 exhaust side and an S14/15 compressor side?... or vice versa? what is the turbo on these silvias?

T28 exh side = smaller = faster spool?... (need help in these areas)...

And as RBsileighty said: I was actually planning the steel wheels etc to make more boost safer...

So basically, instead of getting another turbo at all... i could just do the steel wheel job on mine, have it hi-flowed and run with that.... worth it? how much?

Link to comment
https://www.sau.com.au/forums/topic/33365-t3-turbo/page/2/#findComment-672000
Share on other sites

Just a thought... what if i put a T04 compressor on my current/standard (T3) exhaust?

this would mean a bigger compressor spooling up at the same speed as my current set-up...

Can this be done?... or what other compressor housings could i use...

Link to comment
https://www.sau.com.au/forums/topic/33365-t3-turbo/page/2/#findComment-673533
Share on other sites

Based on what you have said, it sounds like a good high flow may be your best option. Its likely to give you another 40-50rwkws.

When they high flow turbos they typicaly machine the std housings to accept bigger wheels, and sometimes use housing off other turbos with a more desirable A/R. You will find that generically they will all fit a steel T3 turbine wheel and a TO4 compressor wheel (what hp you are after will dictate the trims of the wheels)

As for running 12s with a high flow on an RB20, my thoughts are thats a big ask. Unless with the std turbo you are already running well into the 13s, then i dint think the extra power will help you into the 12s. Clutch/diff/susp/tyres are a bigger variable then the power you are making.

As for spooling up at the same speed with a TO4 compressor, they are a physically bigger and heavier wheel, so require more airflow to get them spinning, so no i dont think that even with the std exhaust turbine it will have the same response. Also you will most likely want to change the std turbine wheel as they are the most likely part to fail on the RB20 turbo.

If you want to see what a TD06 does for an RB20 then PM me.

Link to comment
https://www.sau.com.au/forums/topic/33365-t3-turbo/page/2/#findComment-673559
Share on other sites

Hey guys... more questions...

does the R34 turbo bolt straight onto the rb20 manifold, will the car require other mods to do this or can it be a straight swap... (bretto)???

The R34 GT-t turbo bolts straight on, no custom manifold work required. Though, I remember being told that when the guy put it on, his boost dropped to 4.5psi, and he needed an EBC. May not be the case in your situation, but who knows?

The advantage of the R34 turbo is that it is newer, and so therefore they have generally does less kilometres. They can go for around $1000.

Link to comment
https://www.sau.com.au/forums/topic/33365-t3-turbo/page/2/#findComment-683600
Share on other sites

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

    • Who did you have do the installation? I actually know someone who is VERY familiar with the AVS gear. The main point of contact though would be your installer.   Where are you based in NZ?
    • Look, realistically, those are some fairly chunky connectors and wires so it is a reasonably fair bet that that loom was involved in the redirection of the fuel pump and/or ECU/ignition power for the immobiliser. It's also fair to be that the new immobiliser is essentially the same thing as the old one, and so it probably needs the same stuff done to make it do what it has to do. Given that you are talking about a car that no-one else here is familiar with (I mean your exact car) and an alarm that I've never heard of before and so probably not many others are familiar with, and that some wire monkey has been messing with it out of our sight, it seems reasonable that the wire monkey should be fixing this.
    • Wheel alignment immediately. Not "when I get around to it". And further to what Duncan said - you cannot just put camber arms on and shorten them. You will introduce bump steer far in excess of what the car had with stock arms. You need adjustable tension arms and they need to be shortened also. The simplest approach is to shorten them the same % as the stock ones. This will not be correct or optimal, but it will be better than any other guess. The correct way to set the lengths of both arms is to use a properly built/set up bump steer gauge and trial and error the adjustments until you hit the camber you need and want and have minimum bump steer in the range of motion that the wheel is expected to travel. And what Duncan said about toe is also very true. And you cannot change the camber arm without also affecting toe. So when you have adjustable arms on the back of a Skyline, the car either needs to go to a talented wheel aligner (not your local tyre shop dropout), or you need to be able to do this stuff yourself at home. Guess which approach I have taken? I have built my own gear for camber, toe and bump steer measurement and I do all this on the flattest bit of concrete I have, with some shims under the tyres on one side to level the car.
    • Thought I would get some advice from others on this situation.    Relevant info: R33 GTS25t Link G4x ECU Walbro 255LPH w/ OEM FP Relay (No relay mod) Scenario: I accidentally messed up my old AVS S5 (rev.1) at the start of the year and the cars been immobilised. Also the siren BBU has completely failed; so I decided to upgrade it.  I got a newer AVS S5 (rev.2?) installed on Friday. The guy removed the old one and its immobilisers. Tried to start it; the car cranks but doesnt start.  The new one was installed and all the alarm functions seem to be working as they should; still wouldn't start Went to bed; got up on Friday morning and decided to have a look into the no start problem. Found the car completely dead.  Charged the battery; plugged it back in and found the brake lights were stuck on.  Unplugging the brake pedal switch the lights turn off. Plug it back in and theyre stuck on again. I tested the switch (continuity test and resistance); all looks good (0-1kohm).  On talking to AVS; found its because of the rubber stopper on the brake pedal; sure enough the middle of it is missing so have ordered a new one. One of those wear items; which was confusing what was going on However when I try unplugging the STOP Light fuses (under the dash and under the hood) the brake light still stays on. Should those fuses not cut the brake light circuit?  I then checked the ECU; FP Speed Error.  Testing the pump again; I can hear the relay clicking every time I switch it to ON. I unplugged the pump and put the multimeter across the plug. No continuity; im seeing 0.6V (ECU signal?) and when it switches the relay I think its like 20mA or 200mA). Not seeing 12.4V / 7-9A. As far as I know; the Fuel Pump was wired through one of the immobiliser relays on the old alarm.  He pulled some thick gauged harness out with the old alarm wiring; which looks to me like it was to bridge connections into the immobilisers? Before it got immobilised it was running just fine.  Im at a loss to why the FP is getting no voltage; I thought maybe the FP was faulty (even though I havent even done 50km on the new pump) but no voltage at the harness plug.  Questions: Could it be he didnt reconnect the fuel pump when testing it after the old alarm removal (before installing the new alarm)?  Is this a case of bridging to the brake lights instead of the fuel pump circuit? It's a bit beyond me as I dont do a lot with electrical; so have tried my best to diagnose what I think seems to make sense.  Seeking advice if theres for sure an issue with the alarm install to get him back here; or if I do infact, need an auto electrician to diagnose it. 
    • Then, shorten them by 1cm, drop the car back down and have a visual look (or even better, use a spirit level across the wheel to see if you have less camber than before. You still want something like 1.5 for road use. Alternatively, if you have adjustable rear ride height (I assume you do if you have extreme camber wear), raise the suspension back to standard height until you can get it all aligned properly. Finally, keep in mind that wear on the inside of the tyre can be for incorrect toe, not just camber
×
×
  • Create New...