Jump to content
SAU Community

Recommended Posts

4500 is ok with me... but 6000 is late

at what rpm do u think it will spool?

I'd imagine you'll probably be lucky to get much happening at 4500rpm with a T78, if what you mean by spool is "Making reasonable boost". The biggest turbo I could imagine getting much going on at those kind of revs would probably be something like a GT4088R, and that'd not be full boost...

what is the number inside the exhaust housing? there are 3 sizes 14, 17 and 21cm housings and the 14 is actually very streetable.... the 21 is not. T78 is my favourite street/strip RB26 turbo when setup correctly.

gt3540r would be a better choice imo

Nah good example is the MSR skyline, ran better numbers with the TD06SH-25G (10.30ish ) than it did with the GT3540r. If your tight for cash though the GT3540r is the best compromise though.

Its not a brand thing its an outcome thing. Like cats car RB26 i have driven plenty of rb26's with GT-RS's and 2860's but i dont like them i prefer the T517Z's but on SR20 for high end i will choose a HKS GT3037s over a T67 anyday and for response and mid power 280rwkw a TD06l2-20g over a GT2835.

But that comes down to personal preference sometimes on power deliver.

The 517's suck absolute kak compared to thier Garrett friends if you ask me.

Having been in a GTR that has 517's and then went to Garretts of very similar degree, the different was unmistakable.

The Garrets made a tad less power, but had more power everywhere, smoother delivery etc etc.

Light - what kind of duties is the car going to see?

4500 is ok with me... but 6000 is late

at what rpm do u think it will spool?

I had a td06-25g with t78 wheels. On a built motor it came on at 3800rpm and went all the way to redline. Made 490rwhp at something like 1.5bar with a dodgy fcon tune. I sold the car to a SAU memeber, i'll point him towards this thread as he may or may not want people knowing anymore specs other then the above.

But that comes down to personal preference sometimes on power deliver.

The 517's suck absolute kak compared to thier Garrett friends if you ask me.

Having been in a GTR that has 517's and then went to Garretts of very similar degree, the different was unmistakable.

The Garrets made a tad less power, but had more power everywhere, smoother delivery etc etc.

Light - what kind of duties is the car going to see?

8cm or 10cms? they are totaly differrent beasts i have just removed the 2860's and fitted the T517z 8cm and i have experienced exactly the opposite....

  • 8 months later...
what is the number inside the exhaust housing? there are 3 sizes 14, 17 and 21cm housings and the 14 is actually very streetable.... the 21 is not. T78 is my favourite street/strip RB26 turbo when setup correctly.

Hi URAS, Is the T78-33D-14.0 very responsive on a GTR?? Compared to something like GT2530's? What boost do they start making good power?

Thanks

Hi URAS, Is the T78-33D-14.0 very responsive on a GTR?? Compared to something like GT2530's? What boost do they start making good power?

Thanks

speak to rob and danz at creatd they have a 4 door r33 RB25 with a T78 kit on it and it makes over 400rwkw, it is also suprisingly more response than i imagined it is on full song before 5000 rpm and once on can be played with like a much smaller turbo. James V from D1 garage has a ZEIK power s13 with RB26 and T78 for drift and has much the same feedback as i experienced whilst driving the creatd R33.... all in before 5k and hold on till 9k :P

Thanks for the advice URAS. Was just contemplating how they would compare to HKS 2530's. Do you think a T78 would be able to make more outright power/response than the twin 2530's? (With a built engine / similar boost levels?

Blue GTR

If your intended purpose for the car is circuit and you could only choose from 2530's or a T78 then definitely go the 2530's.

Even if the 2530's make 20-30rwkw less at the same boost level as a T78, because they are more responsive I'd say the car would still be quicker around a circuit.

I had a T78 on my gtr and the power delivery was like a light switch. Power hit hard from 4800-5000rpm which was way too late.

Swapped to a TO4z and it was more responsive down low with more power up high.

Thanks for the advice URAS. Was just contemplating how they would compare to HKS 2530's. Do you think a T78 would be able to make more outright power/response than the twin 2530's? (With a built engine / similar boost levels?

top end yes, response no way sorry.

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

    • Even more fun, leave all the ADAS stuff plugged in, but in different locations, hopefully avoid any codes!   And honestly, all these new cars with their weird electronics. Pull all the electronics out Duncan, and just shove an aftermarket ECU and if needed a trans controller in, along with a PDM. Make it run basic but race car styled!
    • To follow up a question from earlier too since I had the front bar off again (fking!) This is what is between the bumper and the drivers side wheel And this is the navigator side, only one thing but its a biggy! So basically....no putting coolers in the wheel arches without a lot of moving other stuff. Assuming I move to properly race prepping this car I'll take that job on and see how the computers respond to removing a whole bunch of ADAS modules
    • So I prepped the car for another track day on Wednesday (will be interesting to see coolant temps post flushing out and the larger reservoir, with a forecast of 3-14 being 20o cooler than last time I took it out). Couple of things to mention; since I am just driving the car and not taking a support vehicle, I took the rear seats out and just loaded the back up Team Trackday style. Look at all that space! To cover off removing the rear seat....it is weird (note the hybrid is probably different because it wouldn't have folding rear seats) Basically, you remove the lower seat base, very similar to a r series but it is a clip that pulls forward to release the base rather than it being bolted down. Easy Then, you need to remove the side section of the rear seat on each side. There is a 14mm head nut at the bottom of the side piece, the it slides upwards off a hook at the top to release; you also need to unhook the seatbelt from the loop at the top. Then the centre piece is weird. You need to release/fold the seats forward with the tab in the boot on each side From there, there are 2,x12mm headed bolts holding the rear of each seat to the folding bracket, under the trim between the rear seat and the boot (4x christmas tree clips there, they suck). The seat is out but you can see where the bolts attach to the bracket
    • As discussed in the previous post, the bushes in the 110 needed replacing. I took this opportunity to replace the castor bushes, the front lower control arm, lower the car and get the alignment dialled in with new tyres. I took it down to Alignment Motorsports on the GC to get this work done and also get more out of the Shockworks as I felt like I wasn't getting the full use out of them.  To cut a very long story short, it ended up being the case the passenger side castor arm wouldn't accept the brand new bush as the sleeve had worn badly enough to the point you could push the new bush in by hand and completely through. Trying a pair of TRD bushes didn't fix the issue either (I had originally gone with Hardrace bushes). We needed to urgently source another castor arm, and thankfully this was sourced and the guys at the shop worked on my car until 7pm on a Saturday to get everything done. The car rides a lot nicer now with the suspension dialled in properly. Lowered the car a little as well to suit the lower profile front tyres, and just bring the car down generally. Eternally thankful for the guys down at the shop to get the car sorted, we both pulled big favours from our contacts to get it done on the Saturday.  Also plugged in the new Stedi foglights into the S15, and even from a quick test in the garage I'm keen to see how they look out on the road. I had some concerns about the length of the LED body and whether it'd fit in the foglight housing but it's fine.  I've got a small window coming up next month where I'll likely get a little paint work done on the 110 to remove the rear wing, add a boot wing and roof wing, get the side skirt fixed up and colour match the little panel on the tail lights so that I can install some badges that I've kept in storage. I'm also tempted to put in a new pair of headlights on the 110.  Until then, here's some more pictures from Easter this year. 
    • I would put a fuel pressure gauge between the filter and the fuel rail, see if it's maintaining good fuel pressure at idle going up to the point when it stalls. Do you see any strange behavior in commanded fuel leading up to the point when it stalls? You might have to start going through the service manual and doing a long list of sensor tests if it's not the fuel system for whatever reason.
×
×
  • Create New...