Jump to content
SAU Community

Precision Billet Turbos


Recommended Posts

No doubt, mine isn't getting pushed at all and it's starting to get right up there power vs power rating wise.

I just find it hard to imagine a larger turbo on basically the same motor set up as mine and Jez's is making almost double the power at 4000rpm and a huge extra wack of hp top end... All while being on 99 octane fuel vs Jez and myself on E85

If I thought that graph was genuine and repeatable I would have already sent an email requesting an invoice for the purchase :)

Link to comment
Share on other sites

Any thoughts on how it is possible? I agree, it seems unbelieveable - but there has to be an explanation! SAE doesn't inflate numbers THAT much unless the temp sensor is somewhere silly, perhaps.

Might have to check more MGT dyno results to see if they have other numbers which seem too good to be true - they are meant to be a reputable outfit.

<edit> I think I have found a trend :(http://www.gtr.co.uk/forum/176121-high-power-rb25s-mapped.html

Link to comment
Share on other sites

Any thoughts on how it is possible? I agree, it seems unbelieveable - but there has to be an explanation! SAE doesn't inflate numbers THAT much unless the temp sensor is somewhere silly, perhaps.

Might have to check more MGT dyno results to see if they have other numbers which seem too good to be true - they are meant to be a reputable outfit.

<edit> I think I have found a trend :(http://www.gtr.co.uk/forum/176121-high-power-rb25s-mapped.html

Lol you are everywhere when it comes to turbo results :P

Link to comment
Share on other sites

Is that a 6266?

What is your max boost you run and at what rpm?

As Lithium said 6262. I run about 1.6bar for thrashing and 1.4bar at the track.

Got a full track day this Thursday so will try and pull some logs from that :)

Link to comment
Share on other sites

Probably wont be able to get much help here but what would you guys recommend for a n1 motor with vcam?

6262 .84 twin scroll seems to be the go for a 26 but with vcam would the 6266 be the better choice with a bigger rear (1.0+).

Car sees a little track mainly for street though and will be run on e85. Ideally I'd want 450awkw+

Link to comment
Share on other sites

  • 2 weeks later...

i rekon a 6266 .84 divided rear would be choice

I got that same turbo on my built 26, still have standard cams, e85 etc getting tuned Friday so I can post up a graph then, will be good to compare to all the 6262 graphs getting around

Edited by SiR_RB
Link to comment
Share on other sites

Update guys, The Old girl made 350kw 15 psi 430kw 24psi, 30psi made 436kw @ 6000rpm ignition prob the splitfires arent coping plus Im thinking the exhaust maybe holding it back 3.5 inch dump pipe 3.0 inch exhaust maybe to much back pressure we will check & see whats going on. Should be up around 500 plus in my eyes gate is vented straight out with screamer pipe. Need to iron out the little bugs then hopfully see some decent numbers.

Link to comment
Share on other sites

Very nice mate!


When does this all start to happen, RPM wise?


I would have to agree that 3" is too small for any part of the exhaust when reaching for those power limits.. 500kw is basically 4" TBE zone.

Link to comment
Share on other sites

Didn't it make good power on pump gas? If it can made 450kw on straight pump gas then it should be able to make a fair bit more than that on E85... if it isn't then the cause is more likely to be ignition or something along those lines.

Link to comment
Share on other sites

to put it straight Lithium, The 450kw was on race fuel at autosalon with to4z .82 rear 24psi, was making 430 on pump98. Just its really bugging me that it seems stuck at 400 plus. In all Honesty it should crack 500 plus @30psi one would think engine sounds great. Did a comp test evrything is good 134,134,134,135,137,134. Thinking either LS2 coils or okada what your thoughts about the situation?

Link to comment
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

    • So next year I am looking at upgrading from my VE SS bomadore ute to something more refined.  I wanted to stick with a V8 but not anything German or Australian, either a coupe or a sedan. So if I wanted anything newish that limited my options to either the Lexus RCF which I quite like. But with the price they demand and a kid on the way a 2 door coupe is probably not going to be the best idea. The next best thing would be the ISF but the newest models are 2014 and commanding over 60k and even the older 2008 models in ok condition starting around 35k is kind of bullshit. So I figured if I could not have the noise I could perhaps make do with easy power. Enter the infinity Q50 or Skyline equivalent. The price difference between the 300 and 400hp models seems a bit crazy. Right now there is 300hp Q50 one on carsales from a dealer with 61km for 27k drive away. If I wanted to get a 400hp Red or 400R car the prices seem to start at 43k From my limited research it seems that the only differences are that the 400r/Red Red runs more boost and a more aggressive tune. There are are turbine speed sensors on the turbos. Has 2 pumps for the water to air intercooler. Runs an engine oil cooler. I'm guessing that the exterior trims might look a little more sporty as well. I had a lazy look for upgrades to bridge the gap on z1motorsports They have kits that upgrade the water to air heat exchanger as well as the coolant pump which should give a non Red/400r better intercooling temps than the stock Red/400r. I added an engine oil cooler with a thermostat as well to try and make things as close as possible. Obviously the ECU is going to need a tickle. Having not done much in the way of research they also sell a ECU flashing tool with pre loaded tunes that are supposed to boost the non Red/400R by 100hp which adds 1k USD to the cost. The total cost of the parts @ the current time including shipping and taxes worked out to be $4350 AUD. Personally I would rather get the car tuned on a dyno which would probably add more cost Assuming the worst that you got a workshop to install the new parts I would guess no more than 5 hours would be required in the worst case @ 5 x $150 per hour = $750 So the total cost could be around $5100 So for easy number 5k + 27K = 32k I guess that would leave some change left over to swap out the open diff and fit a LSD Any thoughts?      
    • Right, not sure why I thought it to be a lean spike. It might be fixable with modern card-style hot film MAFs which have some design features to avoid counting reversion flow but I've never tried it myself.
    • I did not realise this, I'll contribute more and earn my stripes and retry later. 
    • I'm only going to hassle you for posting links to images. It's against my policy to click links that could be some nasty payload. Sadly, you need to make 9 more posts before you can just stick the images directly in a post, unless @PranK sees this and bends the rule for you.
    • Hello,new to the group, I bought a R32 from auction recently, wondering if anyone knows the cars history, seems to have the usual go fast bits on it, plan is to do an engine swap- add 2 extra cylinders and 1 extra turbo. https://www.dropbox.com/scl/fi/i4rjmlzubjbwjtguh6f4s/IMG20241011140744.jpg?rlkey=q0lumm251377vknbqktfwrycq&st=7scvwx4e&dl=0 https://www.dropbox.com/scl/fi/ro24qmwzlczzlfsr4y05x/Screenshot_2024-10-10-10-49-23-90_9a2f5bb2149dae94cd1e190effc09b33.jpg?rlkey=oyguh26ttshlf04ccp48odf4v&st=xloae97b&dl=0   New to forums and posting pics, if links don't work, take it easy on me, 42yrs old and I tune carburettors!!  
×
×
  • Create New...