just curious.

all those guys who run higher psi, say 24 psi +. When you dyno, does your turbo turn bright red from the heat?

 

You can achieve that with lower pressures by driving hard for awhile. So I'd say it's no suprise when loaded up on the dyno.

 

so overboost for a long time will cause this, huh?

wouldn't higher level boost play into this though? i mean, physically, your turbo is spinning/producing a lot more turbine boost RPM at higher boost then lower boost.

I do wonder what sort of damage this does to the turbine.

Like creating play for the turbine in the housing.

 

I'm sure the turbo turns red after extended driving even under regular boost conditions. It's connected to the exhaust system next to the block. What do you expect?

 

it's fine. Normal.

 

Yes, higher boost will cause the turbine to glow red earlier than lower boost. At the stock boost level, it will definitely glow red after extended periods of boost (I wouldn't be surprised if it takes only 15 seconds of maximum boost). The turbine and housing are made of metals with very low expansion rates, the extreme heat was taken into account with the design. Obviously though, if you stay at maximum boost for less time, the turbo will last longer. It's a simple matter of wear and tear.

 

What he said, and here's some fun stuff...





And there is a video but i can't find it right now.

 

sick pics

 

Completely normal. The first A4 I had was an auto and bone stock. The 150 hp versions of the 1.8T run very low boost, 10 psi tapering to about 6. I could make my turbo glow almost white when it was stock

 

thats hot

 

Literally

 

Great pics guys. Cast iron is some tough stuff.

 

Same thing happened to the Evo during the dyno runs. we lit a cigarette on the turbo

 

I have run my Evo WOT for 54 minutes open road racing, the turbo GLOWS. I do not know what the expected lifespan is, but I have been doing this for two years. I run MOTUL oil in my car, it is formulated for very high temps and rpms. It is your engine oil lubricating the bearings in your turbo.

Eddybear

 

wow that cant be good for the turbo let alone anything in the engine bay that isnt fire proof. and hey eddybear, did you spell that right? if so where did you get that oil. i know some one who swears by amsoil, but im skeptical of the stuff. (did i spell skeptical right? idk who cares)