Jump to content
SAU Community

Recommended Posts

Also it looks like you've hit some sort of flow restriction (possibly the rear housing as stated earlier) as it holds around the 500 rwkw mark for around 2500 rpm!

What intercooler are you running?

Perhaps down the track a little an EFR9180 with the 1.45 twin scroll will be the way to go to get more top end without sacrificing too much low end. This motor has achieved what I wanted it to do now though. The next two engines are where I'm going to pursue more power.

The intercooler is a genuine Nismo core and is most likely not the restriction, however its had a lot of miles on it and has had some decent stone strikes. It will be replaced most likely with a hypertune core at some stage.

The 6466 will go 550+kw easily if I up the MAP sensor to a 4 or 5 bar. The 525kw was far from being optimised. There was no point tuning it at the limit of the MAP sensor as the ability to detect an over boost situation no longer exists. The 30kw gain from just 2psi shows the engine is still waking up at this pressure level despite the top end drop off.

For the moment I am very happy with the setup. I want to make the car look a little more pretty next, in case someone wants to photograph it.

  • Like 1

I have confirmed the rev limit soft cut was 7500 RPM.

The two graphs on the dyno sheet were actually 4th gear 7500 rpm and 5th 6000 rpm pulls.

The 5th gear run was an aborted run due to an intake hose blowing off. It stopped at 6000 RPM. Trent switched to 4th gear after the hose blew off for the third time, and did the 4th gear pull.

The chart below is RPM vs KW and NM.

post-26553-0-20302500-1450185308_thumb.png

Edited by GTRNUR
  • 1 month later...

Nothing real significant at this stage. Ive been driving the car whenever its not raining, which hasn't been that often up here unfortunately.

When doing some maintenance today, I was under the car and discovered I've done a right front CV boot. Grease splattered all over my newly painted TE37s. Such is GTR ownership...

Machining of the next two blocks is coming along nicely. Billet main cams, ARP stud kits and girdle plates installed. Sleeving next week all going well.

  • 3 weeks later...

Hey Mate.. I'm definitely interested in getting one built. I'm in Mackay so not too far away, plus as mentioned in the other thread I have mates you might know.

I'm actually a tuner too. Are you taking orders yet?

Sorry no I'm not taking orders yet, but I can say that one of the two engines being built at the moment will be for sale. That is once we see our first 4 digit power figure in testing.

The price is going to be quite high as it is not a large production run, and also the two builds are being done with no expense spared. Every part is now custom built for huge strength. ARP625 studs throughout, pistons that cost more than a complete rebuild, special coatings and materials, and a couple more experimental refinements.

Here's a sneek peek of one of the bottom end's before sleeving. Steel billet main caps + girdle plate with 12mm studs. I am trialing a Platinum Racing girdle plate on the second engine.

post-26553-0-40326200-1455258092_thumb.jpg

  • Like 4

Hey Mate.. I'm definitely interested in getting one built. I'm in Mackay so not too far away, plus as mentioned in the other thread I have mates you might know.

I'm actually a tuner too. Are you taking orders yet?

Haha Jono, I see you found him, couldn't help yourself could you.

Haha Jono, I see you found him, couldn't help yourself could you.

ahaha yep. I am keen as hell. I would sort this out over 12 months. And this guy looks like he knows his shit. I would rather spend the same money on a RB34 than a RB28

  • 1 month later...

Not much to report on really. I'm getting used to driving the car, and have decided I want to fix what is holding back the current setup from making 800+ and having that utterly terrifying top end acceleration. So a few weeks ago I placed a few more orders and now the parts are rolling in.

In the short term I am sticking with the 6466 and have just got a 1.30 housing upgrade for it, to allow the engine to breath better in top end. From what the 3.4lt supra guys tell me, I'm going to notice very little drop in response, yet will gain power that climbs to redline. I'm will be maxing out the injectors too, so another fuel pump upgrade is again in order. I'm swapping out the 044's and am installing a pair of walbro 460's instead, having now worked out how to mount them so they prime properly.

Under the bonnet I've changed the oil separator to a custom Autech style oil unit of my own design. I use a cone at the high end for the can as the vapour outlet, and there is 5 layers of oil separation baffles inside the can, with a return to sump drain at the low side.

On the next two engine front, I have the cylinder head for the lower spec motor now. Ported, +1/+1, Tomei 280/11.5's with supertech valves and springs. I'm still having a hold up with big cylinder head. Parts delays are the worst as they bring projects to a stand still...

  • 4 months later...
40 minutes ago, NISR32.5 said:

Any news on these mate?

Yes some progress has been made.  All parts to complete the next two engines are in the hands of the machine shop awaiting final machining.  If things are completed on time I'll have everything ready to assemble the "insane spec" RB33 next Friday. The RB32 that will follow will be a few more weeks after that.

I changed my business name to Project RB recently too, and dropped open deck engines as none of the new engines are open deck anyway.

I completed a 900km day trip about in the car about a month ago and have been driving every day that I can when its not raining. I believe there is about 16,000km on the new setup now.  The long road trip revealed that my alternator can't keep up with the rest of the higher than normal electrical load in the car, so I've got a 150A alternator upgrade going in soon.

That's about all.  Fingers crossed for no more delays.

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



  • Latest Posts

    • @joshuaho96 Hmm considering the drama you've seen/experienced, have you looked into getting a built complete long motor shipped from Australia?  Considering the AUD is basically monopoly money when compared to the USD, at a glance this seems like a good option?
    • Bloody Skylines, they put you through the bloody wringer! Stick at it! Stunning drag strip BTW! Where is it? Can see part of the name on the slip and probably should just Google it!
    • I mean the other day I had to walk someone through diagnosing why their timing belt was walking off the cam gears. At least one of the issues was a bent tensioner stud. Local mechanics have found runout on the CAS mechanism causing weird failures. I'm also no saint here I've documented some of the things I've had to learn the hard way. Something I discovered recently is that my CA emissions catalytic converters weren't even welded correctly to align the downpipe to the main cat and they tossed the support bracket that goes from the transfer case to the downpipe to support everything there. I spend a lot of time chasing down these decidedly unsexy problems and the net effect is it feels like I never actually get to the original objective (flex fuel, VCAM, oil control, cooling, etc).
    • At times with how you make everything sound, all I imagine Americans doing when they see a gtr is standing there looking at it and bashing it with a gun like how a caveman would with a club and hoping it fixes itself 
    • I think this is just a product of how the US market works for this stuff. Shops are expensive and there's no real way of knowing what kind of results you're going to get, people don't really have the institutional knowledge. I have heard too much at this point to really put faith in anybody "full service" except maybe DSport and they aren't really a full service kind of shop. If you go to the right place I have no doubt they'll get it right for you. Some locals have set it up right but the cost really is nuts and even now they're still fighting issues. And you know I'm a crazy person who thinks things like twin scroll, relatively short low-mount cast headers, PCV recirc to intake, recirculating BOV, right-sized for ~400 whp, MAF load, validating all of that to a standard comparable to OEM test programs, etc are relevant. For what it's worth, multiple local owners at this point have been stuck in a perpetual cycle of blowing a motor -> getting someone to rebuild it -> some missed detail causes the bearings to wipe and spin just outside of break-in mileage or drop valves or some other catastrophe -> cycle repeats. I usually only find out about this because I'm perpetually helping random friends with diagnosing car troubles, Skyline or otherwise. The single turbo stuff if I'm honest is mostly secondary, it just doesn't seem to achieve the numbers in the ~2000-3000 rpm region that I would expect given the results I've seen here or in Motive's videos. I don't really know what we're missing here in the US to be causing this. Lots of people like to emphasize the necessity of finishing the project first and foremost, but I'm not made of money and I can't afford to be trashing a 15k+ USD engine build with any regularity. Or spending my relatively limited garage time these days unable to triangulate problems because too much was changed all at once. Also, even if it isn't a catastrophic failure I would consider spending the cost of single turbo conversion with nothing to show for it to be pretty bad. 
×
×
  • Create New...