Jump to content
SAU Community

Recommended Posts

Edit just read that it's a 45mm hypergate. I was thinking internal gate. Something fuccy is going on with the wastegate still to have that happen. How is the gate positioned on the manifold?

1 hour ago, iruvyouskyrine said:

Edit just read that it's a 45mm hypergate. I was thinking internal gate. Something fuccy is going on with the wastegate still to have that happen. How is the gate positioned on the manifold?

I could be wrong but to me it looks like a pretty good size/position of the wastegate pipe

CE053B62-9823-43D7-BD94-32E2345EC1EB.jpeg

Yeah my manifold is the same and I certainly haven’t experienced the same issues you have described. 
I changed turbos last year to a GTX3071R (from the HKS GT-RS) but didn’t change the manifold or wastegate setup, and have had no boost control issues with either turbo.

When I pulled the springs out of the gate before I re installed it I pushed the piston completely open to make sure like you said the gate was opening completely and that’s when it hit 14psi around 4000-5000rpm..

I would think maybe it needs a bigger wastegate but it’s got me baffled as Ryno is controlling boost beautiful on a smaller gate than mine. Major wtf..

Also out of respect for Ryno I’m happy to make a new thread rather than hijacking his, I just thought putting it here would show how well this manifold is obviously able to work on a similar set up (after receiving some feedback from people external to SAU that it must be too restrictive etc)

9 minutes ago, Ryno said:

I’m fine with the discussion mate, hope you can workout what’s going on.

Thanks very much mate I appreciate that, after seeing your awesome results I’m super keen to see how responsive I can make my ATR45

Yeah unfortunately my HKS GT-RS expired last year after I got some head work done. I think the extra flow was too much for the old girl.

At the time the best value option For replacement was a Arashi GTX3071R. It goes well, but is definitely not quite as responsive as the old GT-RS.

15594881-EBB5-4E27-92A5-351504452EA9.jpeg

4AA5493A-7E14-4E3B-B380-F08FF353ECD7.jpeg

  • Like 1

I haven’t hit the dyno with it yet. I tuned it myself with the Power FC hand controller as I have a wide band sensor permanently wired in. I should get it on there, just haven’t found the time.

I’ve made a few more changes to the car over the last few years...

Some suspension arms upgrades, rear cradle mods and GKTECH front hubs.

I ditched the standard Radiator clutch fan to an electric fan (this improved my fuel economy by around 0.5 to 1 liter per 100kms).

i upgraded the alternator (again!)... this time to an new LS1 140 Amp unit.

I also swapped out the head unit (for the 4th time since I’ve had the car) to a Alpine HALO 9 head unit (which I can’t recommend highly enough!).

Externally the car looks the same.

8E83015D-DBEE-47B0-82A8-14B8018300D1.jpeg

A71A1FD3-EA08-4EEB-BB6E-F6A6E41A6A2E.jpeg

40023B9B-1891-4BF2-80CA-D9B9ED638FE2.jpeg

  • Like 1

No dramas at all, when you do get it on the dyno I’d love to see the results ?

Looks like you’ve been busy with the upgrades, would be a great car to drive! I’m looking into an LS alternator upgrade at some stage also, I think it’s overkill for my car currently but I figured if I’m going to replace it with a new one I might as well future proof it, plus the genuine items are really good quality

What type/size exhaust are you running Ryno? I’m starting to think maybe mine might be a contributor to my boost creep issues as it is very free flowing (3.5” dump, 100 cell venom cat, 3” cat back with one straight through muffler)

My exhaust is similar (I also have a Venom Cat) but I only have a 3” dump. I doubt the exhaust is the issue, as if the wastegate is doing it’s job it should always be the path of less resistance, rather than going through the turbine.

It’ll be loud, but I’d be tempted to give it a run with the wastegate removed to see what boost is produced. Just limit it to one pull to make sure the hot exhaust gases don’t damage the engine bay.

Then you’ll know for sure whether it is the wastegate or something else.

  • Like 1

Thanks for the recommendation Ryno that was actually my next move was going run it up once with no gate at all. So I think that’s a job I’ll be doing very soon.

I could be wrong as this is just my own theory after having a long think, But would a big and free flowing exhaust contribute in the sense that there is little restriction/back pressure? So rather than exhaust being able to divert out of the wastegate it is simply flowing through the turbine as this would be the path of least resistance? So in theory if I was to fit a restrictive exhaust the pressure in the manifold would be greater (as gasses can’t escape easily) and therefore have a better chance of flowing out the wastegate?

Again this is all theory so anyone with opinions for or against don’t be shy to chime in!

15 hours ago, Ryno said:

8E83015D-DBEE-47B0-82A8-14B8018300D1.jpeg

 

Been looking at that headunit myself! was going to mount in the same configuration you have there but was worried it may hit the dash! glad to see it fits!

2 minutes ago, DaymoR32 said:

Been looking at that headunit myself! was going to mount in the same configuration you have there but was worried it may hit the dash! glad to see it fits!

It just fits, the top right corner just touch’s. However I like that it does as it further prevents any vibration from the display.

  • Like 1
3 minutes ago, Ryno said:

It just fits, the top right corner just touch’s. However I like that it does as it further prevents any vibration from the display.

good to know, does it need loads of funky adapters to connect to amps and such? or is it just like a normal headunit at the back?

2 minutes ago, DaymoR32 said:

good to know, does it need loads of funky adapters to connect to amps and such? or is it just like a normal headunit at the back?

It’s very normal. It was a straight swap from my previous head unit.

  • Like 1
  • 5 months later...

Just wanted to come back with an update for all those who gave their input and advice, it’s very much appreciated. And of course Ryno for allowing the chat to happen!

Since upsizing to a 50mm gate and plumbing it back in, I’m holding a minimum of around 17-18psi. Making pretty much bang on 300rwkw at that amount of boost which seems typical of that turbo, so that’s something.

For the moment just enjoying the car while deciding if I will leave it that way, or move the gate to the turbine housing. Personally not a big fan of how that looks but would like to keep the boost a bit lower at times, like track days. 

In response to Ben the timing is around 18° I believe my tuner said.

Thanks again everyone, really appreciate the input 👍

Good to hear you resolved the issue mate. 

Since my last posts, I have been continuing to improve the tune but haven’t had it on a dyno. 

I’ve swapped the front hubs to GK Tech ones, in hindsight it’s a change that has pro’s and cons (in a street car). The improved front roll center has definitely increased the grip at the front of the car, so much so that I’ve stiffened the front sway bar fully and removed the rear sway bar to fix the balance and stop mid corner oversteer. The drawback is the tyres scrubbing at high lock angles due to the change in Ackerman, this is particularly frustrating when parking the car at low speeds.

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

    • Well, I can recommend the partial AV system translation CD I ordered from Car Audio Workshop in NZ. Whilst it didn't address the date issue, it has conveniently translated on-screen menu items into English, and now allows the GPS-received time to be offset in hours rather than minutes, so I can display Eastern Australian time accurately ( and bump it by another hour when daylight savings starts ).
    • Yuh, if it's 45°C outside, my car is driving in it.
    • I'd be curious to hear more. Otherwise, have you driven a modern x-trail? I wonder how it compares. Here in Australia they are/were popular for rentals and fleet vehicles. I have been in some and my impression was they are bad. But, this may have been very different in the 2000s at a good trim level. Twenty years is plenty of time to make the model worse. I do very much agree with the 2 silver cars in the garage approach. But, not driving because it's too hot would not leave a lot of time in the year for many Australians. I don't think you need to worry too much unless the car has actual issues with overheating. 
    • Back again. I returned to Japan in Jul/Aug to spend time with the car on my birthday and remind myself what all the sacrifice and compromise is for. It happened to line up with the monthly morning meet in Okutama, which I have been wanting to go to for a long time. It's a unique event at a unique spot with really rare, interesting, and quirky cars. It's where all the oldheads and OGs gather. The nighttime scene at DKF certainly has its place and should be experienced if you're into cars, but there's too much bad attention and negativity around it now. IMO the better time is Sunday morning at DKF or Okutama; it's more chill and relaxed. I'm glad I was finally able to go, but not sure it's worth the drive from all the way from Nagoya immediately the day before, unless I was already staying in Tokyo for the days right before the meet, because you have to wake up quite early to make it in time. Funnily enough though I didn't drive the car all that much this trip because it was just too damn hot. While there were zero issues and running temps were nominal and the A/C was strong, RBs already run crazy hot as it is. Sure, it took it all like a champ but something about driving these cars in the ridiculous heat/humidity bothers me and makes me feel like I'm asking too much of it. I'm just me being weird and treating the car like a living thing with feelings; I'm mechanically sympathetic to a fault. Instead I was mainly driving something else around - a KX4(silver) 2001 X-Trail GT, that I acquired in May. There's a few different flavors to choose from with Xs, but visually it's the Nissan version of the Honda CR-V. Mechanically it's a whole different story as this, being the top-trim GT, has an SR20VET mated to a four-speed auto and full-time AWD! It was a very affordable buy in exceptional condition inside and out, with very low mileage...only 48k kms. Most likely it was owned by an older person who kept it garaged and well-maintained, so I'm really happy with how it all worked out. It literally needs zero attention at the moment, albeit except for some minor visual touch-ups. I wanted something quirky, interesting, and practical and for sure it handily delivers on all three of those aspects. I was immediately able to utilize the cargo and passenger capacity to its full extent. It's a lot of fun to drive and is quite punchy through 1st and 2nd. It's very unassuming -in the twisty bits it's a lot more composed than one would think at a glance- and it'll be even better once I get better tires on it(yes, it's an SUV but still a little boat-y for my liking). So...now I have two golden-era Nissans in silver. One sports car and one that does everything else; the perfect two-car solution I think👍 The rest of the trip...I was able to turn my stressed brain off and enjoy it, although I didn't quite get to do as much as I thought. I did some interesting things, met some interesting people, and happened into some interesting situations however, that's all for another post though only if people really want to know. Project-wise, I went back to Mine's again to discuss more plans and am hoping to wrap that up real soon; keep watching this space if that interests you. Additionally, while working in the tormenting sweatbox that is the warehouse, I was able to organize most of the myriad of parts that my friend is storing for me along with the cars, and the 34 has a nice little spot carved out for it: And since it can get so stupid hot in there, that made it all the more easy -after I was standing there looking at the car and said 'f**k it'- to finally remove all the damn gauges that have mostly been an eyesore all this time. Huzzah. The heat basically makes the adhesive backing on the gauge mounts more pliable to work with, so it was far less stressful getting this done. I didn't fully clean it up or chase the wiring though; that will happen once I have the car in closer possession. Another major reason to remove all that stuff is to give people less reasons to get in my car and steal s**t while it's being exported/imported when/if the time comes, which leads us to my next point... ...and that is even though it's time in Japan is technically almost up since it's a November car and the X would be coming in March, I'm still not entirely sure where my life and career is headed; I don't really know what the future looks like and where I'm going to end up. I feel there's a great deal of uncertainty with me and as a result of that, it feels like I'm at a crossroads moreso now than any point in my life thus far and there are some choices I need to make. Yes, I've had some years to consider things and prepare myself, however too much has happened in that time to maintain confidence and everything feels so up in the air; tenuous one might say. Simply put, there's just too much nonsense going on right now from multiple vectors. Admittedly, I'm struggling to stay in the game and keep my eyes on the prize. So much so in fact, that very recently I came the closest I ever have before to calling it quits outright; selling everything and moving on and not looking back. The astute among you will pick up on key subtext within this paragraph. In the meantime I've still managed to slowly acquire some final bits for the car, but it feels nice knowing there's not much left to get and I'm almost across that finish line; I have almost everything I'll ever want for my interpretation and expression on what it is I think an R34 should be. 'til later.
    • Thanks for that, hadn’t used my brain enough to think about that. 
×
×
  • Create New...