bolting up a turbo on a stock RB30

[DANNY8]

My bro just got an RB30 VK and the guy also chucked in a turbo and manifold (custom dodge job). We wanna wack it on just to have a play.....would it run ok without changing the ECU or injectors or anythin? I figured it should work, just not do much lol.

This is the first time we've played with a turbo, so don't know stuff all about them. It won't matter if we kill it (the turbo that is).

Now I know some turbo's are oil or water cooled.....by looking at the pic attached, do u know if it's water cooled? I circled the flange which I figured is suppose to have water going to it, and on the opposite side there is another one. I'm guessing they are an inlet and outlet. Are they for water? If so, we could just connect he heater hoses up to them hey?

[VN_Luke]

what you've circled looks like the bit where you bolt the oil return line onto the turbo. - the hole on the other side will be for the oil feed.

turbos need oil to lube the bearings/bushes. some turbos have water cycling through them as well to stop the oil 'coking' up when the car is turned off with a super hot turbo still, and the oil stops flowing.

if your turbo has water cooling, there will be 4 ports on the 'core of the turbo' - oil feed/return, and water feed/return. - if it doesn't have water cooling, it will only have 2 ports, which will be for oil feed & return.

the oil return is a 'gravity' return that goes to just above the sump in a stock setup - so should always be facing down.

it will 'run' with the na setup, however you're asking for trouble when it comes to fuel supply etc. - it's not recommended.

does your block have the thread/holes there already for the oil and water lines? (s2 vl's had them, s1 didn't)

what's going on with the exhaust outlet of the turbo?

[DANNY8]

Do u have a pic of the S2 block with the connections for the oil/water lines? Then I know where to look and I'll go have a looksy.

So all turbo's have oil lines, and some have water lines as well. With the 2 flanges it has on the turbo, does it matter which one is connected to inlet and outlet, or is it just important that the one lowest is the outlet?

If the block doesn't have the oil feed connections on it, where do we get the oil from? Would we have to drill a hole and put a thread on it to put a connection on, or is there somewhere around the oil pump which we can screw a connection into?

Yeah when I said it was a dodge job, I was being serious lol. It looks like the exhaust flange has been cut off (where the exhaust bolts up to the rest of the exhaust on the car), and the exhaust housing on the turbo has been welded to the manifold lol.

It's actually my little bro's car that we're playing with, so he's saving up for another turbo and manifold....that's why we're playing with this one.

[VN_Luke]

haha awesome!

yeah with the oil, there's usually a larger hole with a flat face looking thing (exactly like the one you've pictured) - that's usually the oil return. It's a much bigger pipe than the inlet.

you want a good fat oil 'return' pipe (I think the stock one is like 1/2"? - or thereabouts) - and you want it to drain/flow nicely back into just above the sump. Otherwise if you get oil building up in there, it will build up in the core of the turbo, go past the seals, and go into your intake/exhaust housing - bit messy either way.

the oil feed is usually taken from somewhere with oil pressure - the s2 rb30's has a feed on the passanger side of the block - if yours doesn't have this, you can T piece off the oil pressure sender - the oil return will be a pain as it kind of needs to be above the oil level in the sump - though there will be a bit in the block where you could drill and tap a thread if you're keen enough...

[greenfoam]

Also if you are keen the ecu can be fixed for turbo goodness, then you just need a set of stock turbo injectors (should be easily find from someone thats got bigger ones) and away you go to 180rwkw land :!)

[VN_Luke]

p.s. - is there a wastegate on that turbo?

[vlturbs]

a little off the topic but can anyone out there tell me if you need an intercooler to get it to dose??

[stocky]

no you dont, but a kebab will help

[vlturbs]

dont know about kebabs bro if i was gunna feed the turbo it certainly wouldnt be that **** pie n chips mate any day. Seriously though i aint lookin to put a dose pipe on just have that sound thru factory bend + pod filter, you know how its done??

[stocky]

hahaha good good. i dont know much about turbos, but i think you just need to fiddle with the blow off valve a bit. basically you just want pressure built up between the turbo and the closed throttle, so it is pushed back out the turbo. i would think that the longer pipes from intercooling create a bigger sound. someone correct me if im wrong

[vlturbs]

on one of my turbo 1600's i dont run a bov but run a cooler and just a pod straight off the turbo and she flutters does sound sweet, just got a vl turbs and want to get a similar sound, may not be possible as it has a bov and this lets the compressed air between the comp housing and throttle body escape when throttle body closes thus preventing any compressed air returning to the comp wheel and slowing it down (in theory to prolong the life of the bearing) etc etc

[stocky]

yeah, the BOV is stopping you from dosing. if the BOV cant let the air out, it will come out through the turbo instead, making the dose sound

[vlturbs]

its a cliche isnt it (if thats the right word) the bov prevents damage to the turbo by venting the unused compressed air to the atmosphere where as to get the dose i am actually slowly reducing the life of the turbo. What i noticed this arvo just from putting a k'n pod filter in place of the fact airbox was the amazing amount of air its suckin thru, its heaps more responsive and when i hit it thru boost in 1,2,3rd she just spins and hooks up sideways. Under hard accel there is this huge suction sound and even thou it blows off this almighty hiss comes out of the pod when changing gears. Thanks for your help bro n make no mistake i aint no fully sick kebab munchin show pony dose junky, just a typical aussie bloke who's a little partial to the flutter!! By the way my profile pic shows my 70 1600 wid series 2 vp v6 mate i wanna s'charge it any tips. How good do the vs clubby kits look, i got one on my 96 vs, best kit out!!