Jump to content
SAU Community

Recommended Posts

Sams Performance is getting a seriously good name with regards to Gen III's and LS1 Edit. A mate's VX II R8 was dynoed there a few weeks ago and made considerable gains and was very impressed with the knowledge on hand.

Definitely a V8 place though. Thought you'd have to bring your own tuner...

Adrian

  • Replies 48
  • Created
  • Last Reply

Top Posters In This Topic

yeah there was one hella tuff black hsv with ls1 engine... i didn't know anything i saw in that engine bay coz my knowlege on v8s r minimal... :cheers:

there were cars from everywhere... victoria, canberra etcetc..

i brought HITMAN with me.... got 225kw @ 4wheels

Originally posted by Mr R32 M-Spec

for people with GTR's though, how do you guys get it sideways through a corner?

Allegedly, attempting to overtake a 1st gen RX7 around a tight corner will do it :cheers:

The torque split controller in GTRs feeds power to the rear wheels, as such it drives like a GTS-t would. When it detects wheelspin it starts feeding torque to the front wheels to a maximum ratio of 50:50. Quite different to a WRX which drives all 4 wheels all the time.

Naturally the reason why you need a 4WD dyno for a GTR is because on a normal dyno, as soon as it senses the rear wheels turning and the front wheels are stopped it goes "oh shit, wheelspin!" and feeds power to the front. The car then procedes to add a new window in the workshop :D

Hi guys,

Sorry to jump in here but I have a question.

First off congrats to Prank, very nice numbers...

But that is the source of my question.

My GTR has 2530's, dumps, full exhaust, power fc, hks intercooler and is making 320hp at all 4 on 1.15bar on a dyno dynamics dyno. If Christian is getting 280 on standard turbos shouldn't I be getting a lot more than I am with the same boost??? I am only running that because the injectors are getting close to maximum and will run 1.4 once i have bigger ones, but I'm curious as to why my numbers appear so low compared to standard turbo gtr's..

It's not just Pranks car either, others talk about 300 + on standard turbos so do ya think mines not tuned right?? The a/f's are spot on says my tuner...

Just a question...

Cheers

Brett

Remeber that output is largly related to boost. ie. if everyone that owns a GTR runs 1 bar of boost then hp should be reasonably close. The main reason that you usually upgrade turbos is so that you can run more boost and then make bigger hp.

Hope this helps.

I only recently witnessed how dynos can tell some big fat porkies. Two different cars and dynos.

Ones, I went for a drive in a 180rwks RB25DET, felt it too. Plenty of top end, and pulled nicely. (stock turbo)

The very next day a friend got his car tuned, and turned out a 185rwks reading.(HKS 2530) Imagine my surprise when he took me for a drive that night.

This thing stuggles for grip all the way thru 2nd slewing the car sideways, and pulls much harder in 3rd. There is no way these cars had remotely the same power.

There would be at least a 1.5-2.0 second difference in the 1/4 times. Im guessing close to flat 14 for one, and a high 12 for the other.

I always thought that no matter what turbo u had, 1 bar of boost was 1 bar of boost.....

I mean at the throttle the same amount of air is coming through no matter what has pushed that air through??? you're still getting 1 bar of boost into ur engine weather a T88's supplying that much pressure of 2540's are????

am I wrong???

can someone clear that up??

Originally posted by B-Man

But 1 bar from a huge turbo flows heaps more air than 1 bar with a small turbo.

that's the part I don't get????

logic would say that 1 bar of pressure is 1 bar of pressure... the measurement doesnt change just because 1 turbo's bigger than another????

if the bigger turbo is flowing more air than that can't be 1 bar???

can someone clarify??

No. Dont confuse volume of air with pressure. Pressure is a force, volume is a unit of measureing how much space is being used.

The way I understand it is, a larger turbo flows the same pressure over a larger area. Think about blowing air through a thin straw at 5 psi, then blow 5psi through a straw with a bigger hole, which straw will more air?

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

    • You are perhaps suggesting that it is not a super car? Well....it's not an AU.
    • Dropped the MX5 of this morning to get the hardtop colour matched and some PDR done, they are also going to give it a buff to remove some "stubborn" swirl marks and light scratches in the clear coat Over the last few months the poor little thing has copped some shopping centre car park abuse, I try to not park in them, but hitting Westfield's a few times over the last few months has taken its toll, nothing really bad, but enough of a trigger for a "while we're in there" thingie  Once it's back and all the one colour, with a few dents and mark's removed I'll give some of these products a go and see what they're like  
    • A locally delivered Infiniti have remote start installed but don't come with the remote start key. You need a new remote start key and they just need it programed. And this is different to making/programing a new key that just starts the car.  
    • Cheers, and cheers for sharing so much of the build and also sharing the glimpse of what turns out to bring a lot of us poor decision makers together haha.  I do recommend learning more about how to manage it, if not considering getting a  formal diagnosis.  The discussion with the psychiatrist I got my diagnosis through was quite eye opening, things I'd not even considered to be ADHD related and hadn't mentioned were things she asked about out of the blue and were common themes with people with my flavour of ADHD.   It's not a label for people who are hyperactive and ill-attentive, there's more to it than that and some of it can be much more challenging or damaging - though there are of course two sides to the thing, and a lot of the stuff we have to go through and work on to live with it make us effectively "better" at other things as well. Aside from the fact that there is some argument I could have a bit of ASD seasoning in there (came up during the diagnosis, and neurodiverse things seem to not stay as a cookie cut) I suspect you need to learn more about ADHD if you are puzzled about how hyperfocus could possibly apply.  I *do* personally use "superpower" with quotes deliberately, but it's 100% an ADHD thing due to the exact reason that lack of focus is also an ADHD thing... Loosely speaking the inattentive side of ADHD isn't the inability to focus, it's the inability to control where the focus goes.  Not being able to sleep because brain is more interested in thinking about a stupid thing I said to a girl I liked 30 years ago, not being able to focus on work because my brain is more keen on putting together the torque management strategy we're going to try out with a drag car next weekend, not being able to focus on a conversation with someone I WANT to listen to and respect because there is a flickering light in my peripheral vision.    If I could just stop work and build the torque management setup right there and then I'd not hear anything else until it was done.  
×
×
  • Create New...