Oil Lines For De + T

[J3TR33]

Ok i thought i might start a new topic about the problem we were having in doing the turbo conversion on my NA R33.

I have another topic relating to the conversion, but ppl might not read it as much and i wont get the same feedback.

Basically when we tried to do the conversion we had a problem locating the Oil Feed line, so we can run the oil line to the turbo. We have been told that they are already on the engine block and they are blocked of with some sort of a bung/nut. We only found one of these bung/nuts and when we took it off it started leaking coolant. There was one hole in the block, that we thought was the Oil feed line but that didnt have any oil coming out of it and wasnt blocked off by a nut.

Other people have said that you need to drill a new oil feed line into the block.

Here are a few comments from people that i found when i was searching on this topic. They are from seperate people.

1. OK take the oil feed from the oil pressure location by fitting a T-piece, run the return into your sump (take it off to fit a return connection for a hose through the side wall) The water feed can come from your heater hoses system (ie feed and return for the heater core)

2. I am pretty sure all the stuff is already there. They are just blanked off with bolts instead of having the banjo fitting. The oil return is the large one on the exhaust side above the sump. Just get the right fitting and away you go. Then there should be a bolt to undo on the block just above that half way up. That's the oil feed.

Basically i need the right answer, so many people with so many different answers.

I think Unarmed_skyline has a better idea of what im talking about as he was the one doing the conversion for me.

Please help me out and tell me exactly where to locate the oil feed line, or other solutions to the problem.

[342Four]

i wouldnt run an oil feed from a tee piece from the oil pressure location - its a good way to kill a turbo if the tee breaks (and they do - ive seen pictures.....)

i thought there was blanked up bolts on the block - maybe it depends on how old the engine is????

[J3TR33]

i wouldnt run an oil feed from a tee piece from the oil pressure location - its a good way to kill a turbo if the tee breaks (and they do - ive seen pictures.....)

i thought there was blanked up bolts on the block - maybe it depends on how old the engine is????

the best outcome would be that there are blanked up bolts on the block and maybe we missed them or looking at the wrong place, i dont c how this could be done

The engine is a Series 2 1996, could there be a difference between Series 1 and 2 engines, maybe the series 1 had the blanked of bolts and the series 2 doesnt, just a thought

[342Four]

i havent seen a rb25 engine in a while so i couldnt be sure....

[dori34]

just drill and tap your own holes. im pretty sure alot of sr20de+t ppl do it that way.

make sure you get it done properly and no metal shavings fall inside the engine.

Edited December 18, 2007 by whyte

[GTS4WD]

just drill and tap your own holes. im pretty sure alot of sr20de+t ppl do it that way.

make sure you get it done properly and no metal shavings fall inside the engine.

This is the easiest..

but why drill if there is a stock option available..

Hay Albii.. Ill take more pics and talk soon..

Ill see if I have time on the weekend to take the heat cover off dads Rb25DET and take piccies

[Eug]

i agree... suss out if the bungs are available before you start drilling.

they should be there... i cant see why they'd produce two different blocks

[unarmed_skyline]

i've been working the last couple of dayz so havent been able to check mine yet.

From memory my block had 4 blanking plus, 1 of which was oil feed 1 was coolant feed and didnt know what the other 2 were for.

on Albii's block there were only 3 and only one had a blanking plug on it. i got tommorow off so ill take a pic of how mine looks and check back with you's then

[Eug]

the other two would be, the oil return and coolant return

[J3TR33]

thanks heaps everyoone,

hopefully with everyones knowledge we can solve this problem, and i hope it doesnt take too long lol.

This is from a guy who done the conversion to his car, hopefully it will help when ppl are looking at their blocks and even myne once we try to do it again.

You will find the big oil return plug just above the sump on the exhaust side, its a fair size, you just use a 1/2 inch (from memory) socket drive and unscrew it, the oil feed is a small bolt thats in the side of the block a little further up directly above the oil return mate. Unscrew both and make sure you use copper washers on your oil feed banjo bolt, or oil will piss out everywhere.

cheers, albii

[unarmed_skyline]

nah the coolant return in on the back of the motor and the oil return isn't on the na blocks and its in the wrong spot and wrong size, i think they are just for matinence.

Hey albii thats how it was with my car but on yours you don't have the blanking plugs

[GTS4WD]

Hay Albii..

Maby you should post up the pics I sent you of the block?.. someone may be able to identify them?

Or post in the turbo section? Im 100% sure someone will be able to point out which one is which.. and then from there you can compaire with an NA block and see if the lines are blocked.. or you need to tap into the appropriate places..

[J3TR33]

hey peepz, havent been on in ages so yeh jst a reply..

here are pics from GTS4WD and Eug... hoepfully some1 can identify which lines are wat and if they can be found on the NA block...

Also wat other options do i have, i dont want to drill holes into my block,.

[Eug]

as attached. if the provisions aren't there - drill and tap.

[unarmed_skyline]

hey eug great pic that helps heaps, see the oil feed line on that block! on mine it was capped off with a plug, but on albi's it was open and not blocked off, we even tried fitting the line in and cranking the motor to see if there was any oil squirting out and nothing with comming out so not sure how its blocked off

[Eug]

you could have some crap stuck in there causing the blockage?

i am 99% sure those are the correct provisions, compare it against an RB25DET just to confirm it. i don't want to be the reason you have a failed turbo.

[unarmed_skyline]

it is the correct spot i just checked with my car, although the problem is i was trying to run the feed line for albi's car and that feed hole is normally blocked off with a bolt which wasnt there and so im not sure how its blocked off as i put a screw drived to test depth on the hole, and it went in a good 2-3 inchs before getting stopped so in thery there should be oil comming out of it but it was never blocked off in the first place so im stumped as to how its blocked

[Eug]

is there even any oil in the gallery? is the head off the block? or is it all still together on the car?

if the head is still on, maybe the gasket has no holes for that particular gallery.

did you try to rev the motor quickly to increase oil pressure?

[unarmed_skyline]

the engine is still all together, the head has not been removed, and yes i tried reving the motor whilst it was turned off, but enven if i had not the gallery was never blocked off so if i had not have tried the gallery would have been pissing out with oil when in normal driving as there was not blanking bolt (or whatever u call it). But even so when i tried fitting the olt and bango fitting into the the block and started and reved the engine there was still no oil coming out, so it just exmplify's my thought that it is blocked off somewher but im not sure where, what can i do to find out where it is blocked off without removing the head or drilling any hole, im assuming for some reason it may be welded or blocked shut from the inside of the block (which would be impossible for me to un-do without removing the head), in japan for some reason, mabye to convert the engine to na from turbo with a piston change (possibly fetching more money as na's with current flux in na prices) i cannot think of any other reason for this to have been done as it still has the thread for the blanking plus so why change the blocking off proceedures between series 1 & 2 blocks??

anyone got any ideas???? i need a few idea to brainstorm at least!

ps from eugs last pic with circled lines as for oil lines the top left one is the feed line which we are talking about the bottom left one which is the oil return i'm quite sure is not on the na blocks as i've never seen one the other is the water return line!.

[Eug]

i agree, unless it's been blocked off via gasket/welding/grout filled there should be oil in the gallery.

is there residue oil in the gallery?

have you tried to see if oil comes out without using the oil lines?

possible blocked oil lines? (creased/folded/blocked banjo)

maybe the head doesn't have the oil provision? that would be bad.

the conversion has been done heaps of times, i can't see why albii's should be any different.