Blown turbos question(s)

Post by **Welly** » Wed Jul 18, 2007 9:01 am

jameslxdt wrote:if there was a pump that could deliver a fluid as dense as oil at 2 bar then i would like to see it

niz406 · Post by **niz406** » Wed Jul 18, 2007 10:10 am

Welton wrote:
jameslxdt wrote:if there was a pump that could deliver a fluid as dense as oil at 2 bar then i would like to see it
Oh alright then

James is right....

"up to 20 psi"

is not 2 bar

Post by **Welly** » Wed Jul 18, 2007 11:16 am

Actually this pump, in the field, is showing 2 bar on the presure gauge because it's working against a small orifice and small tubing and not delivering it's maximum flow rate. In fact it has been speed controlled down to 2 Bar in this application.

The performance of the pump varies according to the application it's in.

I thank yaw

niz406 · Post by **niz406** » Wed Jul 18, 2007 11:23 am

Welton wrote:Actually this pump, in the field, is showing 2 bar on the presure gauge because it's working against a small orifice and small tubing and not delivering it's maximum flow rate. In fact it has been speed controlled down to 2 Bar in this application.

The performance of the pump varies according to the application it's in.

I thank yaw

NO, No, No, No, No, No.......... that is not the case, please quote evidence supporting your claims

Post by **Welly** » Wed Jul 18, 2007 11:39 am

Well it works, I seen it with my own eyezzzzz so there

niz406 · Post by **niz406** » Wed Jul 18, 2007 11:44 am

Welton wrote:Well it works, I seen it with my own eyezzzzz so there

You whore...... lolz

jameslxdt · Post by **jameslxdt** » Fri Jul 20, 2007 8:48 pm

dodgy website wrote:Our oil scavenge pump has been measured moving 75 GPH of hot 30W oil in an open system, and yet draws only 3.2 amps! In a closed system, it can produce up to 20 psi, where the flow rate will be 69 GPM and it will draw 4.5 Amps.

take into account 75 GPH of HOT 30W, in an open system!!
and as niz said only 20psi in a closed system isnt much over 1 bar

not quite 2 bar

STALLED · Post by **STALLED** » Sun Jul 22, 2007 3:36 am

My mate used to work for Mercedes and he was telling me that there was a recall on the older sprinter CDI vans (not sure which motor) because of some kind of problem with the turbo! He reckoned they were just throwing the old turbos in the bin once they were removed from the engine!

Question: Do the 406 Turbo owners run "turbo timers" on their cars?

I know quite a few people have them here - especially in the Aussie summer due to the extreme operating tempratures! Just lets the car cool down for a bit, the owner can walk away when the car is still running and it will shut down once it has reached a temprature which wont cause damage to the car once its switched off? Alot of manafacturers give a warning regarding going for a cool down drive or letting the car idle for a bit to let it cool down to prevent a turbo failure!

mjb · Post by **mjb** » Sun Jul 22, 2007 11:52 am

STALLED wrote:Question: Do the 406 Turbo owners run "turbo timers" on their cars?

I know quite a few people have them here - especially in the Aussie summer due to the extreme operating tempratures!

I just make sure I idle mine for a bit without aircon. The external temperature really doesn't affect things much given how ludicrously hot turbos get, in fact a hotter ambient temperature would slightly reduce the chance of the turbo seizing

STALLED · Post by **STALLED** » Mon Jul 23, 2007 3:12 pm

mjb wrote:
STALLED wrote:Question: Do the 406 Turbo owners run "turbo timers" on their cars?

I know quite a few people have them here - especially in the Aussie summer due to the extreme operating tempratures!
I just make sure I idle mine for a bit without aircon. The external temperature really doesn't affect things much given how ludicrously hot turbos get, in fact a hotter ambient temperature would slightly reduce the chance of the turbo seizing

What I was trying to say is that due to Aussieland being so freakin hot sometimes - even a small drive can heat things up in the engine bay pretty quickly, hence why all the manafacturers give strict reccomendations when it comes to cooling down your turbo!

Why would you idle it without the aircon - I take it for more gradual cooling as the second fan isnt running?

mjb · Post by **mjb** » Mon Jul 23, 2007 7:49 pm

STALLED wrote:What I was trying to say is that due to Aussieland being so freakin hot sometimes - even a small drive can heat things up in the engine bay pretty quickly, hence why all the manafacturers give strict reccomendations when it comes to cooling down your turbo!

Why would you idle it without the aircon - I take it for more gradual cooling as the second fan isnt running?

Well I only have one working fan which comes on at full speed or nothing! There's a few reasons. Firstly the aircon compressor adds a hefty load to the engine on idle, pretty much doubling the fuel consumption. Secondly it generates a lot of heat which ends up being blown into the engine bay courtesy of the fans. Lastly a/c will activate the fan when it feels like it whereas I usually have my idle time as the time it takes the fan to come on and go off again. With a/c on it doesn't necessarily stop

jameslxdt · Post by **jameslxdt** » Mon Jul 23, 2007 7:51 pm

the cooling fan will run as long as the a/c compressor clutch is engaged

STALLED · Post by **STALLED** » Tue Jul 24, 2007 2:08 am

jameslxdt wrote:the cooling fan will run as long as the a/c compressor clutch is engaged

Thats what I thought - Hit the AC button and the second fan comes on?

mjb · Post by **mjb** » Tue Jul 24, 2007 2:41 pm

jameslxdt wrote:the cooling fan will run as long as the a/c compressor clutch is engaged

Not on mine, probably due to having one failed fan. My only working fan just comes on and off (there's only full speed) intermittently as needed

niz406 · Post by **niz406** » Tue Jul 24, 2007 5:31 pm

STALLED wrote:
jameslxdt wrote:the cooling fan will run as long as the a/c compressor clutch is engaged
Thats what I thought - Hit the AC button and the second fan comes on?

Second fan always runs...... they operate at 6v half speed or 12v full speed depending on the cooling needed