Jump to content
SAU Community

Recommended Posts

On 3/24/2018 at 5:37 PM, Lithium said:

Nice - what setup do you have that on? How is performance?

Quoted Lith because he loves a oil leaking precision... 9.609 @ 146.10mph last night at the drags

Not bad for the baby 62mm, only got one pass and then got the boot

18 hours ago, usmair said:

congrats on your time. very impressive!

 

  • Like 3
  • Haha 1
4 minutes ago, SimonR32 said:

Quoted Lith because he loves a oil leaking precision... 9.609 @ 146.10mph last night at the drags

Not bad for the baby 62mm, only got one pass and then got the boot

 

Yes..

 A rather mysterious Piglet has been keeping me up to date on the bacon you've been making. Absolutely huge effort - I am blown away... There is so much to be impressed with in regards to that result.

How confident are you that the same parts list you have would achieve the sake results? 

  • Like 1
On 3/29/2018 at 7:53 PM, SimonR32 said:

I think that anyone could do it with the right knowledge and skills, but it's not a simple slap on a 6262 and do a 9.6

Yeah obviously - though the power to pull high 140mph trap speeds is no joke!   Funny, I was reading a thread with someone running a 6466 on a Supra and "on kill" they ran a few mid/high 9s at high 140mph traps before snapping a turbine shaft.  Your 6262 is punching high!

  • 2 weeks later...
  • 2 weeks later...

Here's a 6266CEA on my 30DET @ 24psi, held across 4200-7200rpm.  All basic build stuff, engine included.  8.4:1 CR, 265 degree 8.9mm fixed cams. Single scroll 0.84A/R on a 6boost manifold, 50mm gate plumbed back.  Running on petrol.

Timing scatter is currently an issue, did impact on tune/output so there's gains simply from fixing that (in progress now before the next event)

20180424_234850.jpg

20180426_104110.jpg

Edited by Dale FZ1
  • Like 2
40 minutes ago, Dale FZ1 said:

Here's a 6266CEA on my 30DET @ 24psi, held across 4200-7200rpm.  All basic build stuff, engine included.  8.4:1 CR, 265 degree 8.9mm fixed cams. Single scroll 0.84A/R on a 6boost manifold, 50mm gate plumbed back.  Running on petrol.

Timing scatter is currently an issue, did impact on tune/output so there's gains simply from fixing that (in progress now before the next event)

20180424_234850.jpg

 

RB26 Head?  Will you be getting an E85 tune?  Looks like it's holding power quite well to redline currently, will be interesting to see it does with more stable triggering.   There is an outfit in NZ who do a very affordable cam trigger setup (but not using the flimsy stock Nissan drive) which fixes this kind of thing with the stock cam angle sensor configuration without going 10/10ths on a crank trigger setup, if you haven't gone there yet and were wanting a reliable trigger setup without going 4 digit costs.

9 hours ago, Lithium said:

RB26 Head?  Will you be getting an E85 tune?  Looks like it's holding power quite well to redline currently, will be interesting to see it does with more stable triggering.   There is an outfit in NZ who do a very affordable cam trigger setup (but not using the flimsy stock Nissan drive) which fixes this kind of thing with the stock cam angle sensor configuration without going 10/10ths on a crank trigger setup, if you haven't gone there yet and were wanting a reliable trigger setup without going 4 digit costs.

No, just a 25 head with hydraulic lifters and upgraded springs + minor exhaust port adjustments.  The whole thing is loafing along, quite a bit more to extract if desired.

We'll resolve the triggering prior to the next event at end of May, and get it on the rollers at some stage just to validate the improvement.  Going with the cam trigger setup you mention, interested to see the difference in timing logs.

Probably staying with petrol at this point simply because it's not short on stick for what I need the car to do.  And I avoid the inevitable need to go with further fuel system upgrades.  Money better spent on tyres/event entry and actual seat time :)

  • Like 1
  • 2 weeks later...

Quick run on the dyno today just to have look at things, no tuning has been done with this turbo setup but was previously tuned with an unknown high flow on 14psi.

Currently does not have the  boost controller plumbed up and has 14psi gate pressure with a turbosmart 50mm on a 6boost manifold and 5862 turbo.

The dyno graph shows rpm about 300rpm different to last time it was on there, makes it look a bit laggy but it feels not that much different down low from the high flow and is a completely  different car now through the mid range and up top. Currently has 11 degrees of timing from 4500 rpm and up at 18psi.

Its given me a bit of motivation to get the new motor together and  get it on e85 and turn it up

20180507_135850_resized.thumb.jpg.0520440a1920493dbcf195520395552f.jpg

  • Like 2

Not a Skyline but this is a street engine RB26 (BC 2.8L Stroker kit) with a TH400 box, made 915whp through the auto and 1070whp through a manual on 35psi with a Precision 8285 (1.12 A/R) - sounds better than a mangmang. 

Cranked it to 40psi next meeting and cracked the factory block like a spider web, the car sadly hit the wall hard.

 

Also as a veteran of this thread I'm putting my PTE knowledge to a bit more use these days, I can help out any SAU Members interested in ordering Precision Turbochargers off my website.

www.makemegofast.com

 

  • 2 weeks later...
On 3/24/2018 at 2:37 AM, Lithium said:

Nice - what setup do you have that on? How is performance?

Its on a Forged RB30, ported head Tomei 272's E85 

I like the turbo so far good response for what it is and it seems to make decent power.. Cant beat it for the money..

I sold my Precision after Precision rebuilt it and bought 2 Borg warners!! haha

3 minutes ago, mitchum said:

Its on a Forged RB30, ported head Tomei 272's E85 

I like the turbo so far good response for what it is and it seems to make decent power.. Cant beat it for the money..

I sold my Precision after Precision rebuilt it and bought 2 Borg warners!! haha

Nice - any more specifics?  Been quite curious about the SX-E turbos and a few RBs seem to have them but no dyno sheets or hardly even any numbers, yours included now haha

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

    • For once a good news  It needed to be adjusted by that one nut and it is ok  At least something was easy But thank you very much for help. But a small issue is now(gearbox) that when the car is stationary you can hear "clinking" from gearbox so some of the bearing is 100% not that happy... It goes away once you push clutch so it is 100% gearbox. Just if you know...what that bearing could be? It sounding like "spun bearing" but it is louder.
    • Yeah, that's fine**. But the numbers you came up with are just wrong. Try it for yourself. Put in any voltage from the possible range and see what result you get. You get nonsense. ** When I say "fine", I mean, it's still shit. The very simple linear formula (slope & intercept) is shit for a sensor with a non-linear response. This is the curve, from your data above. Look at the CURVE! It's only really linear between about 30 and 90 °C. And if you used only that range to define a curve, it would be great. But you would go more and more wrong as you went to higher temps. And that is why the slope & intercept found when you use 50 and 150 as the end points is so bad halfway between those points. The real curve is a long way below the linear curve which just zips straight between the end points, like this one. You could probably use the same slope and a lower intercept, to move that straight line down, and spread the error out. But you would 5-10°C off in a lot of places. You'd need to say what temperature range you really wanted to be most right - say, 100 to 130, and plop the line closest to teh real curve in that region, which would make it quite wrong down at the lower temperatures. Let me just say that HPTuners are not being realistic in only allowing for a simple linear curve. 
    • I feel I should re-iterate. The above picture is the only option available in the software and the blurb from HP Tuners I quoted earlier is the only way to add data to it and that's the description they offer as to how to figure it out. The only fields available is the blank box after (Input/ ) and the box right before = Output. Those are the only numbers that can be entered.
    • No, your formula is arse backwards. Mine is totally different to yours, and is the one I said was bang on at 50 and 150. I'll put your data into Excel (actually it already is, chart it and fit a linear fit to it, aiming to make it evenly wrong across the whole span. But not now. Other things to do first.
    • God damnit. The only option I actually have in the software is the one that is screenshotted. I am glad that I at least got it right... for those two points. Would it actually change anything if I chose/used 80C and 120C as the two points instead? My brain wants to imagine the formula put into HPtuners would be the same equation, otherwise none of this makes sense to me, unless: 1) The formula you put into VCM Scanner/HPTuners is always linear 2) The two points/input pairs are only arbitrary to choose (as the documentation implies) IF the actual scaling of the sensor is linear. then 3) If the scaling is not linear, the two points you choose matter a great deal, because the formula will draw a line between those two points only.
×
×
  • Create New...