Jump to content
SAU Community

Recommended Posts

g'day g'day peeps

just took the gtr for a blat tonight and just after wasting this kinda hot chick in an xr8, i heard a funny sort of "pfwoosh" noise when i grabbed third and punched the clutch out/acc in. this resulted in like 2psi of boost pressure and no urge whatsoever (...and the falcodore was still munched muahahaa).

now, instantly i've thought "hmm must've popped an intercooler hose" but i couldn't really see anything abnormal after a quick inspection. i'll have to confirm this when its not dark, but what other causes could it be? what does throwing a ceramic turbine wheel sound like? fortunately i've never had to experience that... any other ideas?

also, am i likely to get detonation/leaning-out if i run the sucker like this till i can get it sorted-out (if i can't do it in my driveway).

cheers

d

Link to comment
https://www.sau.com.au/forums/topic/62772-gtr-problems-sigh/
Share on other sites

somehow i managed to snap the rear ceramic turbine wheel on the day of 2004 QLD Drag Combat (i remember it was 45 degree).

it drove like a non turbo vehicle. well...actually worse than any NA car. there was no power at all....if you are in the same stiuation....i guess it's your turbo(s).

If it idles like crap and blows black smoke id say its a hose. If it idles ok then id say youve popped the turbo (does it blow any smoke out the rear when you should be coming onto boost?).

When mine let go it didnt make any bad noises, just when I came on throttle again there was no power and white smoke belching out the back (oil burning).

"pfwoosh" noise

I think a blown hose too....I had the same thing happen under WOT, the noise actually made me jump as it was quite loud and sounded like some sort of cool weapon :P

It brought my car to an abrupt stop as it stalled...it was a confusing few seconds as I didn't know what the hell was going on...loud noises, heavy steering etc etc.

Check to see if it's actually a tear in the side of a hose maybe....

cheers for the responses fellas

the update, after closer inspection and a bit of driving is that its probably not the turbines. it still makes boost (up to about 4-5psi). it takes an age to get to that sort of boost pressure (above 5k) and its making a hissing sort of sound (like air escaping from somewhere) when i'm moving through the revrange. the sound its putting out is quite loud and increases as revs increase.

now, it could very well be a bit of silicone hose but i went over it last night and, while i had the sucker on axle stands and attacked every nook and cranny with prying eyes and leadlights, could be wrong. but generally, all the hoses and clamps seem to be just fine.

i've also discovered that the previous owner plumbed in some hks piping with a pair of the original/series1 sequential bovs, AS WELL as the factory suckers down low in the guard plumbed back behind the afms. are 4x bov's commonplace from these crazy japanese people!!!?? seems illogical to me!

the symptoms. car seems to drive just as smoothly. idle hangs around the 1k mark like it usually does and it still possesses a "bit" of poke.

tracking down the problem is gonna be a pain. it doesn't blow a heap of smoke as far as i can tell (no more than usual cos the jap rechip is obviously very very rich anyway). no odd white smoke from the turbos as far as i can tell either. is burnt oil a surefire sign of a stuffed turbine wheel?

and how did skylinegeoff burn his line!!???!? by god i surely don't want that to happen! i've owned the thing for like 3 weeks!!!! :P

cheers again.

david

4 BOV's!?!?!? WTF?

I've heard of 4 before, but it was damn stupid and i didn't really believe it.

But yea, i guess they must be uhh, really, cautious about, uhh, backblow etc ??

If you have checked everything else, then (this might sound stupid, but worth a try), check the BOV's themselves, perhaps one of them "carked it", and somehow got "stuck open", or is just really "loose". Not entirely sure if that's possible, but worth checking i guess

I have had a similar problem, had 4 BOVs hooked up on one of our cars.. 2 stock, 2 HKS crappers.

The car just didn't have the pull, and there was a leaking sound. We first blocked up the 2 stock ones, nope didn't fix it.

Then we blocked up the 2 HKS BOV's.. and it was like a new car. Went from doing high 13's to doing high 11's :cheers:

Could quite possibly be the HKS ones..

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 stock ECU does not like anything above 10 psi?  That Nistune one is just for "try" if it will be any different, I know it need to be tune for that. I know but YOU may know about these problem but i/we dont. They few little Skylines here let alone people who know anything about tham so that is why iam asking here  
    • So now we have a radiator with no attachments whatsoever. It lifts up with a particularly tight spot between the drivers side air box mount and the lower radiator outlet, but if you've got this far you will sort that too. This is the lower mounts with the rad out so you can see where the rubber bushes go, it is a straight shot upwards Done! Assembly is the reverse of disassembly, with blood less likely to be shed.
    • Right, onto the second last trick. The Air Con condenser is mounted to the front of the radiator and stays in the car when the radiator is removed. There are 2x 10mm headed self tappers holding the top of the condenser to the radiator, remove those The bottom of the condenser is attached to the radiator with clips. You need to lift the condenser out of those clips and clear (up, then forward). f**ked if  could work out how to do that last bit with the front bumper on. I hope you can, and you share the trick.  Bumper removal probably deserves its own thread one day once I've recovered the will to live, but basically you need to remove the wheels, front inner guard liners (clips and 10mm headed bolts), the self tapper between the guard and the bumper at the rearmost point of the bumper (same as an R32 that bit), any remaining clips at the top/front of the grill, an absolute bastard design with a plate that holds the top of the bumper above the headlight each side (only 1 bolt which is tricky to get to, but the plate catches 2 places on the bumper and must be removed....carefully!) and push clips between the bumper and guard under the headlight. If you've done all that you will be faced with wiring for the fog lights on both sides and in ADM Q50 RS at least, 4 nasty tight plugs on the driver's side for the ADAS stuff. So, the clips at the bottom look like this on drivers side (looking from the front) And on the passenger side (also from the front), you can see this one is already out Clearance on both of these are super tight; the condenser needs to move up but the upper rad support mount prevents that, and the radiator can't move down far because it is (rubber) mounted. Once you achieve the impossible and drop the condenser off those mounts so it does not stop the rad moving, you are good to go
    • OK, next the shroud needs to come off and there are a couple of tricks. Firstly, there is a loom from near the passenger side headlight to the fans, coolant temp sensor etc and there is no plug to undo.  In my case I was OK to leave the shroud on top of the engine so I just undid the passenger side fan plug and about 10 of the clips which gave enough free wire to put it aside. The fan plugs were super tight, the trick I used was a small falt screwdriver to push down on the release tab, then a larger flat screwdriver to lever the plug out of the fan unit....be careful with how much force you apply! If you need to remove the shroud altogether for some reason you will have to deal with all the plugs (tight) and clips (brittle)....good luck. I removed all of the clips and replaced them with cable ties that I will just cut next time. Also, in the Red Sport / 400R at least, the intake heat exchanger reservoir hose is bolted to the shroud in 2 places with 10mm headed bolts; so remove them (the hose stays in the car; no need to undo it at the t fittings down at the radiator lower mount. Once you've dealt with the HX hose and the wiring loom, there are 3x 10mm headed self tappers holding the top of the shroud to the radiator; remove those.   The shroud then lifts out of the bottom mounts where it sits on the radiator, up and onto the engine out of the way. Simples
    • Ok, disregard my “rate them” comment, sorry for my unrealistic input
×
×
  • Create New...