Jump to content
SAU Community

Recommended Posts

i was browseing the various turbo sites on the internet the other day and came across the gt25 garrett turbo with internal wastegate, not hks. the specs are as follows: 440hp or 500hp turbine, .70 comp cover , 4inch bellmouth inlet and .86 exhaust. apparently bolts onto t28 or to3 flange. my question is , does anyone know of this turbo or is running one and if so whats the power and response like? ease of fitment? compared to high flow T03?

Link to comment
https://www.sau.com.au/forums/topic/24610-garrett-gt25r-turbo/
Share on other sites

Hi bigcarl, I have never seen a GT25R that makes 500 bhp. Even with the 0.86 A/R turbine housing they only make around 440 bhp. Pretty much the same as a ball bearing high flow RB25DET turbo. They normally come with a T28 flange (they are very popular on SR20's) but you could probably get them with a T3.

Hope that helps

tell that to boostd, hes getting over 400hp with a vg30 hybrid? i appreciate youre advice but my budget doesnt stretch to $ 5000. $2300 turbo , $1400 manifold, $750 external wastegate, new oil lines, pipeing and labour. then another $ 3000 to strengthen engine internals. also no power under 4000rpm!

Originally posted by bigcarl

tell that to boostd, hes getting over 400hp with a vg30 hybrid? i appreciate youre advice but my budget doesnt stretch to $ 5000. $2300 turbo , $1400 manifold, $750 external wastegate, new oil lines, pipeing and labour. then another $ 3000 to strengthen engine internals. also no power under 4000rpm!

y not its only money!! :D

its get hard to control boost with internal gate at higher hp.

My internal gate looses boost at high rpm, I've tried everything and it won't hold more than .9bar after 5000rpm. I could fix this with an external gate, but, why! I'm not interested in making more power!!! The tyres are just to damn expensive. (brand new 18 inch 275's lasted 6 weeks)

I did the 12.9 with 220rwkw and 255 17" tyres. My 2.2 60 footer shows the launch was crap. I have to get the rear end sorted. Haven't run with the new turbo as yet.

Managed to get the turbo to hold 1.2 bar @ 5000 rpm then trail off back to .9bar , was getting wheel spin in forth.....running semi slicks now to !

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...