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Old 02-26-2013, 02:17 PM   #771 (permalink)
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Default Re: Rebuild

No actually, I don't. The rear one may be okay, but I would shorten it a little so that it doesn't drop straight down, but rather slopes to the pan. The front definitely (at least from the angle of the pic) has a dip in it. If you have the OEM line, put it next to it and see how it compares. It may not be a problem when the oil is hot, but when the oil is cold and has more resistance to flow, it won't be able to make it out of the line and into the pan quick enough before it backs up and hits the turbo.
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Old 02-26-2013, 02:21 PM   #772 (permalink)
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Default Rebuild

But is the engine straight in the pic? I used the 3sx ones didnt have any issues. Only had them running for 150km though. Pulse said something to Ben about them too. If they look good enough to you Pete they will probably be ok


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Old 02-26-2013, 02:21 PM   #773 (permalink)
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Default Re: Rebuild

in theory the oil dropping straight down the return from high enough should for that which is already in the line further down, as you've mentioned there is a reasonable drop right from the turbo, I'd assume that even if a bit more oil than normal sits in the line, as long as it's not backing up or sitting in the line right under the turbo that it will be ok surely?
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Old 02-26-2013, 03:53 PM   #774 (permalink)
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Default Re: Rebuild

I think the immediate drop in the rear return line may provide the oil with enough velocity to make its way to the pan without building up. My main concern really is the front line. It looks like there is hardly any depth before it hits the line, then it flattens out and also looks like it has a dip. It doesn't look as if the initial drop from the front return line will provide enough velocity to make its way through the plateau and dip in the line, especially when it is cold and resistant to flow easily.
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Old 02-26-2013, 06:14 PM   #775 (permalink)
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Default Re: Rebuild

Just a minor detail pete but you may want to put some hose clamps or those oem clip things onto the rubber hose that runs from the wastegate actuators. One of my mates car did just that and massively overboosted grenading the motor from knock
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Old 02-26-2013, 07:03 PM   #776 (permalink)
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Default Re: Rebuild

It's a bit late to ask now but it would have been great if we knew where this enthusiastic rebuilder was sourcing the bulk of the new parts.
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Old 02-27-2013, 02:33 AM   #777 (permalink)
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Default Re: Rebuild

Quote:
Originally Posted by Djmba View Post
Been following this thread for a LONG time. Everything looks so awesome. However, you may want to take the time to revise your oil return lines. In the first pic, the rear return line drops straight down and then plateaus. In the last pic, the front return line even has a bit of a "U" to it. Since the flow in the return line isn't really pressurized and the oil is returned to the pan mostly by gravity. With the plateauing and "U" effects, the oil might not be able to successfully return to the pan. Instead, it will fill up the return line and back up into the turbo, causing you to burn oil and smoke. Trust me. I made SS return lines and before school started, I had the time to revise my rear line, but I haven't had the time to do anything to the front. So what I have to deal with every time I cold start my car is a MASSIVE smoke screen effect from the oil backing up into the front turbo. It looks like I am Seafoaming my car every morning and whenever I leave school. Along with that, I pulled the coupler off the front turbo the other day and found a TON of oil just sitting in a puddle on the inside of the coupler. I am not the only person that has had this problem either. If you take the time to search (or just take my word for it. Lol) you will find many other people have had this same problem. Because of these reasons, you really need to take the time to fix them now, while it is out of the car. The flow should be as smooth as possible with no horizontal flow paths and absolutely no dips. If you put it in the car like that, you will wind up having to pull both turbos to fix the return lines.
G'day Djmba,
Amazing to hear you have been watching this happen, its really cool to hear those sort of things.

Many suggestions and comments made by fellow owners have been taken on board and have been a huge help in making this car what it is, value you cant find anywhere else. So in saying that i went down to the mechanics and explained some of the symptoms people have been reportedly having and to get their thoughts on these braided oil return lines also. They said that quite often parts are made as either a performance or after market add-ons have to weighed upon the factory parts which in turn, have years of development and financial backing in testing and proving that they are what you say fit for purpose. I suppose the moment you change that performance of something you do raise the question. Is that part still optimal for that new job?

The mechanics did confirm that, which is what you said also, any part of the line which does 'flatten out' in a gravity feed system leaves open the chance to backfill oil.

In your suggestion which is really appreciated, I've purchased a set of factory oil return lines to see just how the difference is and ill be sure to post up what I find, if anything.

Thanks for following this build.

Quote:
Originally Posted by mrgtott View Post
Just a minor detail pete but you may want to put some hose clamps or those oem clip things onto the rubber hose that runs from the wastegate actuators. One of my mates car did just that and massively overboosted grenading the motor from knock
When you suggest something like that Mads i have to get the hose clamps, sand and wire wheel all i can from them then after a good clean drive 30 minutes down the road to get them dipped in a new zinc plating, pick them up in 3-5 days at a cost of $20 or so then come back and install them. Not including my time to get all this done and the small amount of effort and money included it turns these clips into $20 each. Seems a bit excessive and pedantic don't you think.... Suppose i better get in to it hey


Quote:
Originally Posted by peterlonz View Post
It's a bit late to ask now but it would have been great if we knew where this enthusiastic rebuilder was sourcing the bulk of the new parts.
G'day Pete,
The majority of all these parts have been sourced by 3sx. They have been a huge help in getting this car together with all that i need performance wise and OEM wise. As for all the labour, plating, painting and construction i have got support from many places locally.
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Old 02-27-2013, 07:36 AM   #778 (permalink)
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Default Re: Rebuild

Awesome. Let us know how it goes. Keep up the good work When is this project expected to be complete?
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Old 02-27-2013, 11:28 PM   #779 (permalink)
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Default Re: Rebuild

I'm trying to source the parts together so I can fix my front oil return line and my smoking problem during spring break. Can you tell me the degree of the AN fitting and the degree and direction of the flange you used where the front oil return line comes off the front turbo? From the picture, it looks like a 45 degree flange, with the direction of the opening toward the front of the car, and a 90 degree fitting. Is this correct?
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Old 02-28-2013, 08:44 PM   #780 (permalink)
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Default Re: Rebuild

Quote:
Originally Posted by Djmba View Post
I'm trying to source the parts together so I can fix my front oil return line and my smoking problem during spring break. Can you tell me the degree of the AN fitting and the degree and direction of the flange you used where the front oil return line comes off the front turbo? From the picture, it looks like a 45 degree flange, with the direction of the opening toward the front of the car, and a 90 degree fitting. Is this correct?
Ill check tonight and take a couple of photo's
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