Symptoms Of Lostawheelitis

[Don Dada]

Just curious guys.....

What are the symptoms in terms of idling/power/afr when a wheel on the rb26 gives out providing that it does NOT suck back any ceramic dust into the engine.

How do u know when ur wheel is gone?

[GT-RZ]

try a big clunk when the majority of it flys through your dumps. be pretty obvious as you will have no power. plus if it sucked NO ceramic dust inside the engine you would be a minority of lucky people. takes allot of stress to rip a wheel apart.

[R31Nismoid]

I think you would be more than lucky if there isnt ceramic dust inside the motor...

But anyway, you cant really tell @ idle. Obviously power/boost wont be the same... thats a given, but then why even attempt that and almost gaurantee a dead motor.

Just pull the dump off

[Don Dada]

ok

Just wanted to know how to tell if the turbos on a gtr is good by just starting the car and free revving it without driving the car

I noticed too that it is possible to get up to about 10psi boost by just free revving the 26 to about 5000-6000rpm

[GT-RZ]

well you have two turbos too worry about. but if it's stock then that seems reasonable. what give you the incline that they were damaged or were you just asking for future reference?

when it happens you will know about it. if you have the cash get some steel wheels put in there or upgrade. my 2c.

[Don Dada]

yeh....... future references.

What garrett turbos would fit on nice there using the stock ecu for about 350rwhp and quick response???

[GT-RZ]

well the stockies with some steel wheels can give you more than that. safely. the stockies as they are can provide that power but your on a timb bomb like always.

Edited June 14, 2009 by GT-RZ

[MrStabby]

Symptoms are: no ability to make boost, and crappy running if you run the motor under the conditions in which it would have made boost. The working turbo will just push air backwards through the broken turbo's compressor, therefore no boost at the plenum. Idle and low throttle are fine as you are in vacuum.

[Travis Trayhern]

just put some steal wheel turbos on a mates gtr he was on his way to adelaide and was all fine then went to over take a car and no boost, there was no bang clunk or anything just fell off. replaced turbos and checked comp and all good.

so they can let go at anytime you dont need to be giving it a hard time at all. we also never found the wheel thanks to a decat pipe.

[Don Dada]

From what i have gathered you dont have to be boosting hard thus creating massive heat and spinning the turbos at 1000000rpm for them to let go.

I guess with age, the more shaft play u get, if the exh wheel only scrapes or bites the housing this would be enough to send it flying out the back!?! That's why it's more common with the r32?!?

[R31Nismoid]

Its predominately heat, heat generated by shaft speed IMO.

Which is too much boost in the given application in simple terms.

eg. You are probably OK with 13-14psi for usual street duties

Circuit you wouldnt run anymore than 11-12psi... being extended laps is going to get a lot more heat in there

Hence its usually the rear turbo that lets go - hottest cyclinders are 5/6 in a stocker style setup.

[MrStabby]

Hence its usually the rear turbo that lets go - hottest cyclinders are 5/6 in a stocker style setup.

Why do 5/6 get hotter? Is that why ppl richen up 6? Or does 6 run a little leaner than the others so its just compensating?

[lachlanw]

because its at the back of the engine bay surrounded by air and water already heated the rest of the motor