Pictures of my Polo

[beefa]

Think of compressor surge as the point at which the compressor blades begin to “slip” in the air, losing their pumping ability, much like an aircraft wing loses its lift when it stalls. In a turbo, this happens in a series of bursts, as the blades slip, then bite, slip then bite. This sets up a pulsing wave in the turbo piping and explains why the sound has that characteristic “flutter”.

The interesting thing about compressor surge is that it occurs much more readily at low turbo shaft speeds. At these low shaft speeds, on road cars this is generally between 2000 and 3000 RPM, compressor surge is not much of a problem, as the loads generated by the surge are miniscule compared to what the turbo encounters at high boost. However, if surge occurs at high RPM and boost, it is possible to reduce the turbo life and/or damage the compressor.

lol copy paste from GFB website, but explains it well

[Kai]

Just for the record.

Obviously BOV manufactures are going to say that its really really bad so you buy there product.

[awestonvp]

Kai said
What a good excuse for a K04


touche!!

[DaveMack]

Kai said
What a good excuse for a K04


touche!!

... or, if you're going that far, why not a Garrett T28? (Yeah, I know ... new manifolds etc. ... but you have to admit, it has its attractions.)

Dave

[Kai]

lol.

[Adam]

lol.

Oh no! what happened to the car? i don't understand =S

[Kai]

It blew the brake line nipple off or somthing and blew a part of the brake up.

I have to wait 10 days before i can drive the car again because of parts coming from germany.

[jasn78]

... or, if you're going that far, why not a Garrett T28? (Yeah, I know ... new manifolds etc. ... but you have to admit, it has its attractions.)

Dave

Sorry to go off topic but why is a t28 better?

[DaveMack]

Sorry to go off topic but why is a t28 better?

It's BIGGER!

Dave

[GT3]

hey kai, what a bummer. 10 days! ..can you wait that long lol
how did it happen? was there a snap or you noticed a leak first?

[jasn78]

It's BIGGER!

Dave

From my Skyline days I always thought of the t28 as a pretty small turbo i.e base upgrade for silvias etc

[shaneth]

this is for the polo

Stage 3 kit (Gt28 variant) = 216kw & 400 odd nm
Stage 3+ (28rs variant) = 254kw & 434nm
Stage 3++ (2871R variant) = 298kw 500nm

[Kai]

hey kai, what a bummer. 10 days! ..can you wait that long lol
how did it happen? was there a snap or you noticed a leak first?

Just noticed a leak at the back.

Sucks tho. Im already annoyed without a car

[Wand Weaver]

It's BIGGER!
Dave

Which means you'll get more power - but also that the turbine will have more rotational inertia and take longer to spool up. This, of course, results in turbo lag.

I guess that everyone who's looking for more power out of a turbo upgrade has to eventually make the decision whether to make the car more drivable, or to create a big power, dragstrip queen.

[shaneth]

Which means you'll get more power - but also that the turbine will have more rotational inertia and take longer to spool up. This, of course, results in turbo lag.

I guess that everyone who's looking for more power out of a turbo upgrade has to eventually make the decision whether to make the car more drivable, or to create a big power, dragstrip queen.

Well put mate.