Jump to content
SAU Community

Recommended Posts

  • Replies 316
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

Thats an awsome results dude, can tell how happy you would be :)

Yes jazza08, I've had the GCG Hiflow for 12 months and was always around the 220-240kw@tw. I always wanted to be at 260-280kw because reading different owners threads and comparing mods, I felt that thats where most guys were aiming. Now with the VG30 rear end 270kw is a breeze and i'm extremely happy with that for a few hundred bucks outlay. If I had have known about the VG30 rear end 12 months ago I would have bought that straight away.

Ian

Very good.  Have you got a pic of the turbo before you put it on.  I'm interested to see the physical size of the exhaust housing.

This fits with my theory that an R34 turbo highflowed should make more than an R33 one done the same way.  Compressor sides are the same all round but bigger exhaust housing picks up serious gains.

Hi Bob, I'll try and download the pics now mate

So the comp. cover is still the std. rb25det turbo?

Also, having trouble understanding that dyno graph :Oops: . How could a turbo with a bigger exhaust cover be making more power throughout the whole range? I would have thought the std hiflow would have been making more power a little earlier (@ low rpm), than the VG30 hiflow combo.

Hi guys, I had a dissapointing day yesterday at Oran Park. I retired the car after only 9 laps. The car was unbelievable. Heaps of power everywhere, more than i was used to and it was the first time I have "booted" the thing since it was installed. I have never raced on the OP short circuit before and I needed more time to work it out. I was getting faster and faster the more familiar i was becoming with the newfound power and the track. Seriously, the boost comes on much much stronger than the normal GCG Hiflow. I ran a best time of 50.68.00. I honestly believe given a few more laps i could have gotten down to 48's. Even the 50.68 sec lap I was sidways comming onto the straight and I would have lost time correcting it.Biggest lesson I learnt is to ALWAYS reinstall the manifold heat shield and the turbo heat shield. I ran without and melted some plumbing. Not melted right through but rubber blistering nearest the stock manifold and even a silicon joiner melting where it was in contact with a SS clamp. DUMB MISTAKE. I'm going to replace some pipes with silicon and reinstall the heat shields.

Ian

H E AT S H I E L D S A R E R E A L L Y G O O D ;)

Winton_Trouble.jpg

462SAD_DAY.jpeg

I burnt/split the heater hose on the firewall, so the glycol sprayed over the hot turbo and flashed off. There was far more smoke then fire, but by the time i stripped/cleaned the car to observe the damage it was clear that there had been a lot of heat and enough of a fire to warrant a new loom.:P

I never thought of that issue before. I guess that is why Nissan designed them in the first place. You never stop learning when you start racing. I stuck my hand in down by that area after 3 laps and jessusss it was hot. It's a neverending story, need to get the lip on the rear guards rolled to as the tyres are just touching, more money.

Ian

More money :)...thats why im callin git quits for a year or two. Concentrate on work and getting some money behind me and enjoy some travel. Fingers crossed i might pick up a Sierra while working / travelling:)

Its amazxign once you start racing a car, i realised two thing, how good a job Nissan did, and secondly how so many aftermarket parts only solve half the problem:(

More money :)...thats why im callin git quits for a year or two.  Concentrate on work and getting some money behind me and enjoy some travel.  Fingers crossed i might pick up a Sierra while working / travelling:)

Its amazxign once you start racing a car, i realised two thing, how good a job Nissan did, and secondly how so many aftermarket parts only solve half the problem:(

I've said it before...The Skyline...We rock up to anywhere, 3 people in the car, 4 wheels and tyres in the car, 20litre drum of fuel with Toluene mixed, tool box and pump and god knows. Having driven for 4 hours to get there, the car is absolutely loaded to the gunnels. Air Conditioner going Stereo going change the tyres when were there. Opposition turn up with car on trailer, gutted with engines and stuff from all sorts of different origin, and there are only a few cars that are quicker on the track. We always finish in the top 10 overall and I just think that says something for Nissan.....and the Skyline.

Ian

Okay so back on topic.

Hows the car at low revs know? Making any less power?

Do you have a graph from like 2000 rpm upwards?

Can you retain the existing dump pipe?

Dying to find one.

BASS OUT

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, that's kinda the point. The calipers might interfere with the inside of the barrels 16" rims are only about 14" inside the barrels, which is ~350mm, and 334mm rotors only leave about 8mm outboard for the caliper before you get to 350, And.... that;s not gunna be enough. If the rims have a larger ID than that, you might sneak it in. I'd be putting a measuring stick inside the wheel and eyeballing the extra required for the caliper outboard of the rotor before committing to bolting it all on.
    • OK, so again it has been a bit of a break but it was around researching what had been done since I didn't have access to Neil's records and not everything is obvious without pulling stuff apart. Happily the guy who assembled the engine had kept reasonable records, so we now know the final spec is: Bottom end: Standard block and crank Ross 86.5mm forgies, 9:1 compression Spool forged rods Standard main bolts Oil pump Spool billet gears in standard housing Aeroflow extended and baffled sump Head Freshly rebuilt standard head with new 80lb valve springs Mild porting/port match Head oil feed restrictor VCT disabled Tighe 805C reground cams (255 duration, 8.93 lift)  Adjustable cam gears on inlet/exhaust Standard head bolts, gasket not confirmed but assumed MLS External 555cc Nismo injectors Z32 AFM Bosch 023 Intank fuel pump Garret 2871 (factory housings and manifold) Hypertune FFP plenum with standard throttle   Time to book in a trip to Unigroup
    • I forgot about my shiny new plates!
    • Well, apparently they do fit, however this wont be a problem if not because the car will be stationary while i do the suspension work. I was just going to use the 16's to roll the old girl around if I needed to. I just need to get the E90 back on the road first. Yes! I'm a believer! 🙌 So, I contacted them because the site kinda sucks and I was really confused about what I'd need. They put together a package for me and because I was spraying all the seat surfaces and not doing spot fixes I decided not to send them a headrest to colour match, I just used their colour on file (and it was spot on).  I got some heavy duty cleaner, 1L of colour, a small bottle of dye hardener and a small bottle of the dye top coat. I also got a spray gun as I needed a larger nozzle than the gun I had and it was only $40 extra. From memory the total was ~$450 ish. Its not cheap but the result is awesome. They did add repair bits and pieces to the quote originally and the cost came down significantly when I said I didn't need any repair products. I did it over a weekend. The only issues I had were my own; I forgot to mix the hardener into the dye two coats but I had enough dye for 2 more coats with the hardener. I also just used up all the dye because why not and i rushed the last coat which gave me some runs. Thankfully the runs are under the headrests. The gun pattern wasn't great, very round and would have been better if it was a line. It made it a little tricky to get consistent coverage and I think having done the extra coats probably helped conceal any coverage issues. I contacted them again a few months later so I could get our X5 done (who the f**k thought white leather was a good idea for a family car?!) and they said they had some training to do in Sydney and I could get a reduced rate on the leather fix in the X5 if I let them demo their product on our car. So I agreed. When I took Bec in the E39 to pick it up, I showed them the job I'd done in my car and they were all (students included) really impressed. Note that they said the runs I created could be fixed easily at the time with a brush or an air compressor gun. So, now with the two cars done I can absolutely recommend Colourlock.  I'll take pics of both interiors and create a new thread.
    • Power is fed to the ECU when the ignition switch is switched to IGN, at terminal 58. That same wire also connects to the ECCS relay to provide both the coil power and the contact side. When the ECU sees power at 58 it switches 16 to earth, which pulls the ECCS relay on, which feeds main power into the ECU and also to a bunch of other things. None of this is directly involved in the fuel pump - it just has to happen first. The ECU will pull terminal 18 to earth when it wants the fuel pump to run. This allows the fuel pump relay to pull in, which switches power on into the rest of the fuel pump control equipment. The fuel pump control regulator is controlled from terminal 104 on the ECU and is switched high or low depending on whether the ECU thinks the pump needs to run high or low. (I don't know which way around that is, and it really doesn't matter right now). The fuel pump control reg is really just a resistor that controls how the power through the pump goes to earth. Either straight to earth, or via the resistor. This part doesn't matter much to us today. The power to the fuel pump relay comes from one of the switched wires from the IGN switch and fusebox that is not shown off to the left of this page. That power runs the fuel pump relay coil and a number of other engine peripherals. Those peripherals don't really matter. All that matters is that there should be power available at the relay when the key is in the right position. At least - I think it's switched. If it's not switched, then power will be there all the time. Either way, if you don't have power there when you need it (ie, key on) then it won't work. The input-output switching side of the relay gains its power from a line similar (but not the same as) the one that feeds the ECU. SO I presume that is switched. Again, if there is not power there when you need it, then you have to look upstream. And... the upshot of all that? There is no "ground" at the fuel pump relay. Where you say: and say that pin 1 Black/Pink is ground, that is not true. The ECU trigger is AF73, is black/pink, and is the "ground". When the ECU says it is. The Blue/White wire is the "constant" 12V to power the relay's coil. And when I say "constant", I mean it may well only be on when the key is on. As I said above. So, when the ECU says not to be running the pump (which is any time after about 3s of switching on, with no crank signal or engine speed yet), then you should see 12V at both 1 and 2. Because the 12V will be all the way up to the ECU terminal 18, waiting to be switched to ground. When the ECU switches the fuel pump on, then AF73 should go to ~0V, having been switched to ground and the voltage drop now occurring over the relay coil. 3 & 5 are easy. 5 is the other "constant" 12V, that may or may not be constant but will very much want to be there when the key is on. Same as above. 3 goes to the pump. There should never be 12V visible at 3 unless the relay is pulled in. As to where the immobiliser might have been spliced into all this.... It will either have to be on wire AF70 or AF71, whichever is most accessible near the alarm. Given that all those wires run from the engine bay fusebox or the ECU, via the driver's area to the rear of the car, it could really be either. AF70 will be the same colour from the appropriate fuse all the way to the pump. If it has been cut and is dangling, you should be able to see that  in that area somewhere. Same with AF71.   You really should be able to force the pump to run. Just jump 12V onto AF72 and it should go. That will prove that the pump itself is willing to go along with you when you sort out the upstream. You really should be able to force the fuel pump relay on. Just short AF73 to earth when the key is on. If the pump runs, then the relay is fine, and all the power up to both inputs on the relay is fine. If it doesn't run (and given that you checked the relay itself actually works) then one or both of AF70 and AF71 are not bringing power to the game.
×
×
  • Create New...