Well my new turbo is smoking like a bastard(out the exhaust i mean) the car has only been on road once since putting the turbo on as i had a few colant issues to sort out (thanks for your help brayden). I have spoken to garrett enginners(Rob Stafford) and there drawings or spec sheet state the gt12 should have
a minium oil pressure of
10 psi at idle
28.5 psi at peak engine torque
I believe the mighty boys engine oil pressure is about 80 psi, someone will correct me if im wrong.
Now my question is if i put a restrictor in the oil line what size should i use or is there some sort of formula i can use to work it out as i dont want to starve the turbo of oil. I have a restictor here already which is 1.5mm but that may be a little small.
Please help before the frustration does my head in
smoke from new turbo
If your oil feed line runs from the back of the block (pressure sender outlet) then you can fit the restrictor there, install a pressure gauge on a tee peice after the restrictor, then keep an eye on the pressure that way.
1.5 to 1.6mm should be within spec though.
1.5 to 1.6mm should be within spec though.
F8B EFI turbo - Three pots and a snail.
No, the oil gallery looks to be there, but no threaded hole like the turbo variants.
F8B EFI turbo - Three pots and a snail.
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brianhaley
- Posts: 35
- Joined: Fri Oct 21, 2005 5:37 pm
Thanks for that Brayden i was planing on using 1.5mm but just wanted other opinions as well
Colin im using half inch pipe for the return, its not kinked at all and the return line is well above oil level
Colin im using half inch pipe for the return, its not kinked at all and the return line is well above oil level
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brianhaley
- Posts: 35
- Joined: Fri Oct 21, 2005 5:37 pm
Well i am sick of farking with this car so i sent it to a shop to finish off the oil pressure problems and as usual brayden you were right. The mechanic made a restrictor up the size of 1.6 mm and its not smoking at all now.
He wacked it on the dyno and we got 37.3kw or 49.98hp on 5psi boost, print out of dyno is in our gallery if anyone one wants to see it
Cheers
He wacked it on the dyno and we got 37.3kw or 49.98hp on 5psi boost, print out of dyno is in our gallery if anyone one wants to see it
Cheers
Good to hear it worked out okay for you mate. 
-edit-
I just checked out the dyno run. Nice smooth power curve but your AFR is a bit on the heavy side! What kind of mileage do you get?
-edit-
I just checked out the dyno run. Nice smooth power curve but your AFR is a bit on the heavy side! What kind of mileage do you get?
F8B EFI turbo - Three pots and a snail.
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brianhaley
- Posts: 35
- Joined: Fri Oct 21, 2005 5:37 pm
Brayden
Sorry i didnt reply i didnt see you ask me the AFR question.
Answer is dont know exact mileage but it chews a shit load of fuel especially when ya give it some and Premium is going right up so we might be selling it & i might by a bike
Sorry i didnt reply i didnt see you ask me the AFR question.
Answer is dont know exact mileage but it chews a shit load of fuel especially when ya give it some and Premium is going right up so we might be selling it & i might by a bike
If you have someone finesse the jets in the carby you'd get a vast improvement in economy. Or pick up a second hand ECU and convert to EFI.
But yes with fuel costs the way they are it can become a bit of a joke! My ute only gets about 150km to a tank, but I know it is in desperate need of a dyno tune.
But yes with fuel costs the way they are it can become a bit of a joke! My ute only gets about 150km to a tank, but I know it is in desperate need of a dyno tune.
F8B EFI turbo - Three pots and a snail.
but u have to remember its only a 27L tank lolBrayden wrote:
But yes with fuel costs the way they are it can become a bit of a joke! My ute only gets about 150km to a tank.
Before turbo I was getting nearly 400km from a tank. 
F8B EFI turbo - Three pots and a snail.
oh well that is a bit lol