I may behaving a blonde moment but by the sounds of things, you are finding oil in your radiator and water in your engine?

A lot of people have apprentices working for them and like my Seargent used to say: "theres no such thing as common sense anymore." I do agree.

The best thing you can do right now, is pull your sump off, look for evidence of water. If you find sum then leave it out in the sun to dry, then shake it a bit and blow it with compressed air before drying it out in the sun again.
Flush your radiator out with degreaser (i love my castrol solvent based degreaser mixed 1 part castrol with 5 parts kerosene, enables it to penetrate thick oil buildup) and use a pressure cleaner to flush it out- and do so THOUROUGHLY.
Put in some engine oil maybe a semi-synthetic to bed in the new sump seal. After run-in change to a fully sythentic. Put in some coolant mixture, making sure the engine is running as you put in your coolant- eliminates air bubbles.

See how you go with that. Depending on how bad your smoke is, it may well be just a bad engine tune or a dirty MAF sensor or O2 sensor. DO NOT use a degreaser or contact cleaner on the MAF sensor, use a special MAF cleaner bought from any decent Auto store.

Hope this helps mate.

Quote:

Lets get back to basics cause I cant follow. Is there:
Water in the oil? or,
Oil in the water? or
Both?

You need to diagnos the problem rather than guess. This is what I would check.
1. fill it up with fuel and is it still running rough?
2. check under oil cap and dip stick for milky residue
3. check the plugs, look for one thats cleaner than the others
3. compression test while the plugs are out
4. TK test

So while its in one piece you run it and test it as a blown head gasket, radiator core (auto only) and possibly turbo (not sure) would be the obvious reasons you would find oil in the the water. Given that its a new kit, contamination is a big possibility.
I would test for the obvious and if results were negative I would run the engine until it got hot and flush the fluids.

Seein as I am a ca guru now... I would say that the small amount of oil in your water is just from the rebuild. As for the smoke when u rev it... You have r33 injectors, so it's over fueling. Secondly it will blow smoke until you take it for a good drive. Being efi and having an ecu baically means it's has to remap itself... Like I said
mate the motor is the least of your worries of the conversion. As long as it starts that's all the matters... You have a long way to go yet

I think Gav is spot on, sounds like contamination to me.

u have been given some good info there jess

yeah i was realy hoping that it was contaminated some how and the radiator i am using is out of an old toyota corona so it might just be sludgy crap , oh and the oil didnt look new it looked like old shiat ,and plus the motor was built by darren and he didnt build it to sell it , and since bailz is now an expert i have nothing to worry about haha

ill check the sump and flush the old water out and check all the plugs as gav was saying ,just to be sure

U have nothing to worry about mate, It will just Be #OOPS# in the radiator rake sump plug off and if water comes out first... Then worry

ok ill give that a go and if there is water in the sump ill start to worry about it