Where does a Turbo gets its supply of Oil?

[goldiegill]

Any kind of turbo needs a constant supply of engine oil from the engine to reduce friction inside its bush and to cool itself. Where does this supply can come from a 1.5 L DOHC??? Secondly, once we fitted a turbo, the cylinders will get more air, but how can we control the amount of fuel given to each cylinder as the amount of fuel given to each cylinder should also increase as the amount of air increases. Does the MAP Sensor takes care of that?? Third, if we fit a supercharger, there will be no vaccum inside the manifold as supercharger will push the air into the manifold with huge pressure. How will the power brakes work??? or how will the other equipments which depends on the manifolds vaccumm work???

[MMamdouh]

A- oil feed is taken from the lubrication circuit of the engine, you can achive that by one of three methods:

1- getting an oil filter sadwitch which allows you to get a couple extra oil feeds for your turbo and oil pressure unit
2- removing one of the plugs on the engine block that blocks the oil lines... usualy those are at the front of the engine near the oil pump.
3- use an adaptor on the oil pressure warning unit to create an extra port to feed your turbo.

B- you are right about the extra fuel... if you did nothing but shove air into the engine it will be running insanly lean and will blow... extra fuel should be added by means of bigger injectors, RRFPR and controlled by a piggy back (SMT 7 or so) anything less than that and your engine will be at a risk.

the stock MAP sensor will get defected if used with boost... you should get a check valve installed on its vaccum line to prevent boost from going to the MAP sensor.

C- i don't think the supercharger will be creating boost at idle or even very low RPM so you will still be running at vacuum condition as long as you are not at mid level RPM

you can search on the internet for more about forced induction and how it works... it is recommended to get a copy of Maximum Boost book.

MMamdouh

[Nubira2.2]

the stock MAP sensor will get defected if used with boost... you should get a check valve installed on its vaccum line to prevent boost from going to the MAP sensor.

if not using chek valves u can get a 2bar or 3bar MAP sensor depending on boost u r running