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Lars E
Dropped
Joined: 03 Aug 2007
Posts: 173
Location: Aale city, denmark
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 Posted: Sat Apr 19, 2008 1:06 pm Post subject: Oil return from turbo?? |
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Hi..
I have a litle problem wiht oil from the turbo, I have made a adapter that sits under the engine breeder.
Under 5000rpm and cold engine, no problem
But over its blows all the oil out though the engine breder.
but 0,7bar = fun 
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Mvh. Lars E
2cv 0,6Tii special  |
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Lars E
Dropped
Joined: 03 Aug 2007
Posts: 173
Location: Aale city, denmark
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| Posted: Sat Apr 19, 2008 1:36 pm Post subject: |
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out taking some foto's
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Mvh. Lars E
2cv 0,6Tii special |
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backfire
Dropped
Joined: 14 Nov 2007
Posts: 346
Location: NL, 's-Hertogenbosch
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| Posted: Sat Apr 19, 2008 2:09 pm Post subject: |
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The breather is designed to do that no? So maybe a better solution is to make a T section in the oil level tube. That one is a closed tube so no problem with spitting out oil.
PS what turbo do you have and how do you have it running??? 
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2CV, with Visa turbo charged |
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JoZeF
Grave Digger
Joined: 25 May 2007
Posts: 1734
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| Posted: Sat Apr 19, 2008 4:08 pm Post subject: |
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Like Backfire.
modify a Rocker cover to fit the oil return... I imagine the fact that you're trying to put oil back in where there are "turbulences" isn"t helping.
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"That bumper fits there like sunglasses on pig"  O.E.
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Lars E
Dropped
Joined: 03 Aug 2007
Posts: 173
Location: Aale city, denmark
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| Posted: Sat Apr 19, 2008 5:07 pm Post subject: |
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Yes, i think that is the problem.
Is the oilflow from the rocker cover large enough???
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Mvh. Lars E
2cv 0,6Tii special |
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JoZeF
Grave Digger
Joined: 25 May 2007
Posts: 1734
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| Posted: Sat Apr 19, 2008 5:12 pm Post subject: |
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That is were a guy with a 652 turbo put his. no problems I don't think.
Is there that much oil travelling through the turbos lubrication shaft ?
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"That bumper fits there like sunglasses on pig" O.E.
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Bart
Lowered
Joined: 17 Jun 2007
Posts: 783
Location: Södertälje
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| Posted: Sat Apr 19, 2008 7:44 pm Post subject: |
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| backfire wrote: | | The breather is designed to do that no? So maybe a better solution is to make a T section in the oil level tube. That one is a closed tube so no problem with spitting out oil. |
When the oil return generates so much pressure that it starts leaking under the filler/breather I think putting the oil return in the dipstick tube will blow out the dipstick...?
Putting it on a rockercover seems a better idea to me.
Cheers, Bart |
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stefan
Dropped
Joined: 25 Aug 2007
Posts: 257
Location: holland
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| Posted: Sat Apr 19, 2008 9:12 pm Post subject: |
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i'm not sure but i think you have to put it under the oil level ,so the pressure from the engine have no effect.
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backfire
Dropped
Joined: 14 Nov 2007
Posts: 346
Location: NL, 's-Hertogenbosch
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| Posted: Sat Apr 19, 2008 11:22 pm Post subject: |
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As far as I know the return oil line from a turbo does not generate pressure, the problem with boxer engine and breather is that it does generate pressure, fill it with oil and it will spitt it out. But hey maybe I am wrong. Other option is to flatten part of engine case, and bolt oil return directly to it as in the way manufacturers do.
If you put the return line of turbo on rocker cover, what will happen to rocker arms with the hotter oil? I mean clearance, extra wear?
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stefan
Dropped
Joined: 25 Aug 2007
Posts: 257
Location: holland
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| Posted: Sun Apr 20, 2008 12:12 am Post subject: |
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| backfire wrote: | | If you put the return line of turbo on rocker cover, what will happen to rocker arms with the hotter oil? I mean clearance, extra wear? |
no problem i think, i have it also on a rocker cover on my gsa turbo engine and it is still ok after 30000 km.
but on a gsa engine you have no problem with sump pressure on a 2cv/visa engine you have, becouse that engine almost work like a compressor with the pistons going together at the same time. so by placing the oil return under the oil level, problem solved i think. on the other hand a turbo must realy have a free flow oil return with no back pressure......
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HMW
Snailer
Joined: 01 Apr 2008
Posts: 14
Location: Denmark
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| Posted: Sun Apr 20, 2008 1:45 pm Post subject: |
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| backfire wrote: |
If you put the return line of turbo on rocker cover, what will happen to rocker arms with the hotter oil? I mean clearance, extra wear? |
The rocker arms are still having the original oilline so there is no problem there.
I would say the rocker cover or the dipstick tube is the place to put the return. |
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Lars E
Dropped
Joined: 03 Aug 2007
Posts: 173
Location: Aale city, denmark
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| Posted: Mon Apr 21, 2008 10:12 pm Post subject: |
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I will modify a rocker cover tomorrow, and take a longer test drive.
And hope that it’s working good.
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Mvh. Lars E
2cv 0,6Tii special |
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Kironk
Snailer
Joined: 29 Oct 2007
Posts: 12
Location: France Alsace
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| Posted: Mon Apr 28, 2008 10:10 pm Post subject: |
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| JoZeF wrote: | | That is were a guy with a 652 turbo put his. |
It's me ?
Taking oil pressure
oil return
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Home Made Buggy with V06/644 injection turbocharged |
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backfire
Dropped
Joined: 14 Nov 2007
Posts: 346
Location: NL, 's-Hertogenbosch
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| Posted: Mon Apr 28, 2008 11:55 pm Post subject: |
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yep I use the same spot to get the oil pressure, Visa engine´s are great that.
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2CV, with Visa turbo charged |
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Erkka
Snailer
Joined: 07 Jul 2007
Posts: 56
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| Posted: Mon May 05, 2008 10:09 pm Post subject: |
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| Why not plumb the return from the turbo into the oil cooler inlet tube? This way you'd probably minimise the oil temp variations in the engine (if you don't want to plumb into the engine case to feed the return into the sump). |
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