Turbo Problem

[gtrnismo]

Hey guys, I own an r32 gtr skyline which is running the standard bush bearing steel wheel turbo's im pretty sure.

the solanoid in the boost controller is cactus so i cant set my boost. i've owned the car for 7 months or so and the past 2 weeks i've driven it hard, taking it over 5000rpm. before 5000rpm it probably only hits 13 maybe 14psi and its only driven on the weekend.

on saturday i went to overtake somebody and i put my foot down in third hitting 7500rpm and hit 1.8 bar boost. since then when my turbo's spool up i hear a high pitch whine. I pulled apart my car today to inspect the intercooler piping and the BOV to see if that might have been the problem but they all seem fine. it has blown blue smoke but there wasn't much and its only happened once and that was a few weeks ago.

I suspect that its an oil seal, bearing or the wheel in one of the turbo's but i've had a mate have a quick check over it and it doesn't seem to be driving any different. still feels just as smooth and powerful and doesn't feel like im losing boost.

if anybody has any ideas or input it would be much appreciated.

and i know running the boost controller without a working solanoid is stupid but its only a gizzmo ibc, not worth it when i have an Apexi AVCR on order.

cheers

Edited September 29, 2008 by gtrnismo

[paulr33]

the stock units are ceramic, not steel wheels

remove the boost controller you have and run off the actuator, at least you will have human-normal level boost instead of unlimited boost

your current setup is unlimited boost

[gtrnismo]

the stock units are ceramic, not steel wheels

remove the boost controller you have and run off the actuator, at least you will have human-normal level boost instead of unlimited boost

your current setup is unlimited boost

they're the n1 steel wheel turbo's. I've got a Nismo edition r32.

[R32 Driver]

just worry about it when it does then...

btw dont get a avcr, my ass holds boost better it does

blitz/greddy are much better

[gtrnismo]

any other ideas out there?

[Hunting Lions]

http://i459.photobucket.com/albums/qq320/kaluah8123/turbo.jpg

any other ideas out there?

the whinning noise u can hear is the turbo on the way out speaking from my experiences anyways.

u are much luckier then i am i could hear this whinning noise also didnt no wat the go with it was but i gave it a gut full in 2nd only to hear a high pitched pop which was the wheel shooting down my exaust with a lil cracking noise which was the wheel blowing a hole thru my cat:)

this was also on the standard turbo.

btw it was cause by the dodgy bleed valve where the bolt rattled out giving me unlimited boost for only a short while go it pulled harder ohh the memories:

the standard turbos dont really like boost much mate so i would rip ur bc out and run just off the actuator as said above cos u are going to be up for a new turbo soon

this is what your turbo will look like with unlimited boost continuing.

P.S i retrieved some pieces of the wheel out of my exaust as a keepsake

Edited October 1, 2008 by Hunting Lions

[omy-33]

if u were 2 rebuild the turbo and fabricate a better exhaust wheel, would u be able 2 run more boost at all?

just curious

[gtrnismo]

yea i assumed it was the wheel. i took my car for another drive last night and it sounds rotational. i then put it in nuetral and gave it some revs and didn't hear the sound because my turbo's dont spool up in when out of gear. thanks mate for the information. i think ima just buy a couple new turbo's. probably hks gtrs turbo's

[charlie22]

. i then put it in nuetral and gave it some revs and didn't hear the sound because my turbo's dont spool up in when out of gear.

What do you mean it doesn't spool up when out of gear?

[gtrnismo]

my turbo's dont spool up when its in neutral. lol. i've hardly driven it since buying it and have no idea how its set up. guy i bought it off told me it was an 11 sec car before it came to australia. it has an apexi power fc pro in it, dunno what other shit is in there. wont find out until i pull it all out.

[charlie22]

my turbo's dont spool up when its in neutral. lol. i've hardly driven it since buying it and have no idea how its set up. guy i bought it off told me it was an 11 sec car before it came to australia. it has an apexi power fc pro in it, dunno what other shit is in there. wont find out until i pull it all out.

sorry mate but i doubt it wouldn't spool up in neutral, it would take a fair bit of engineering to make it happen and what would be the point anyway?

[inthisglass]

lol at the turbos not spooling in neutral

so your engine stops producing exhaust gases in neutral as well does it?

[gtrnismo]

well when i rev it i hear no turbo's and no blow of valve. sorry people im not a car expert, know f**k all about them tbh. so i assumed that they're not spooling up. or are they spooling up and not making boost?

Edited October 1, 2008 by gtrnismo

[RB ONEVIA]

he is semi right there is no load in neutral so they wont spool as much. watch your boost gauge when you do it.

[gtrnismo]

just went and rev'd my car. the turbo's spool up in nuetral but ever so slightly. it makes the sound but its very quiet. so would it be the steel wheel?

Edited October 2, 2008 by gtrnismo

[some_cs_student]

lol at the turbos not spooling in neutral

so your engine stops producing exhaust gases in neutral as well does it?

There's not much load on the engine so, you will get very little spooling as per previous posts.

Watch your boost gauge if you have one....if doesn't exactly do much in neutral

[gtrnismo]

boost gauge didn't move

[gtrnismo]

and now the sound has stopped. last weekend it stopped for a bit then it started again. weird

[msnismo]

*Dave here*

you should check the end float on the turbos asap. any noise is bad. but if you catch it now you might be able to save your motor.

you have to pull off the suction pipes to see. and hopefully they are steel wheel ones.. lol.

[daisu]

Boost created is relational to load (amount of throttle used).

How much throttle do you use to rev the engine in neutral?? (rhetorical question).

Small amount of throttle = small amounts of exhaust gases, which in turn means not much boost created.

Some "know-it-all" people should probably do a bit of research before acting all big and mighty with their "opinions"

If you're turbos are creating more boost than they are supposed to then it is related to your wastegate. The boost-solenoid controls the signal to your wastegate actuator so it is most likely the problem.

Best short term solution is to remove the solenoid so the actuators work on their own without the solenoid, and have the turbo's inspected by a reputable mechanic.