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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 09-28-2006, 05:04 AM   #1
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Default Does the oil return line HAVE TO point straight down?

Does the oil return line point straight down?

I'm in the process of getting everything ready to do a 'not quite but almost' GReddy kit on the car.....Does the oil return line have to point straight down, or will oil pressure in and the height of the turbo above the sump still ensure that the oil drains back ok?????
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Old 09-28-2006, 06:36 AM   #2
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the greddy return isn't straight down, that being said, you need every part of the hose lower than the previous to prevent pooling.
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Old 09-28-2006, 06:42 AM   #3
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It doesnt have to be straight down but pretty close to it. I mean with in like 10 deg.
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Old 09-28-2006, 07:45 AM   #4
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Downhill. The original FM turbo kit drained down and around to the oil filter side of the block. If the return ever straightened out any the oil didn't drain properly and caused some smoking turbos from the oil foaming from not draining. That's why FM went to the straight down, drilled oil pan method.

Frank
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Old 09-28-2006, 02:38 PM   #5
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Quote:
Originally Posted by Uncle Arthur View Post
will oil pressure in?
The oil gets pumped in, but gravity is what's going to drain it. Above post says 10 degrees, I was going to say 15 degrees max. point is, get it as straight as possible.
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Old 09-28-2006, 02:49 PM   #6
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I'd just say anywhere between vertical and horizontal.
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Old 09-28-2006, 08:45 PM   #7
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Thanks all - looks like my TDO4 needs to be clocked by 180 degrees prior to fitment (I think it came off a bottom mount fitment, and the previous owner had bought it to be an over the top fitment, but hadn't noticed that it was out due to having sourced parts but not mock fitted them).

I found a website yesterday which basically backs up what's been said here.

Anyone here clocked a TDO4? It looks to be a relatively easy job - remove locking ring, pull apart, realign and reassemble.....

Any tricks or tips for young players?
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Old 09-28-2006, 09:24 PM   #8
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that's all it is.
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Old 09-28-2006, 10:13 PM   #9
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Quote:
Originally Posted by Uncle Arthur View Post
easy job - remove locking ring, pull apart, realign and reassemble.....
Exactly. Good. Simple and easy really.

That's if the turbo isn't seized beyond belief and refuses to even acknowledge the fact you're trying to do something here, leading you to spray an entire can of PB blaster on it to no avail, so you bolt the turbo down, buy a cheap torch that's too small, use it anyway to heat the hotside while beating the hell out of the leverage bolt in the other side with a rubber mallet which of course does nothing, leading you to use a different turbo on your setup because how much you hate this one now ..DIE TURBO DIE!!!!

Yeah, you should be fine.
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Old 09-28-2006, 10:29 PM   #10
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Quote:
Originally Posted by Uncle Arthur View Post
Any tricks or tips for players?
None..

Ok, i'm a jackass. Here is something that might help.....

How to not buy an overpriced snap ring tool:

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Old 09-28-2006, 10:51 PM   #11
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Since I'm such a comedian, I might as well post this self depreciating bit.

Look at this "scene." It's just sad

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Old 09-28-2006, 11:55 PM   #12
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Old 09-29-2006, 04:29 AM   #13
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Quote:
Originally Posted by UofACATS View Post
Exactly. Good. Simple and easy really.

That's if the turbo isn't seized beyond belief and refuses to even acknowledge the fact you're trying to do something here, leading you to spray an entire can of PB blaster on it to no avail, so you bolt the turbo down, buy a cheap torch that's too small, use it anyway to heat the hotside while beating the hell out of the leverage bolt in the other side with a rubber mallet which of course does nothing, leading you to use a different turbo on your setup because how much you hate this one now ..DIE TURBO DIE!!!!

Yeah, you should be fine.
(In my best Sigmund Freud accent)......

Hmmmmm - I'm zenzing a lot of pent up aggrezzion....... iz z'ere zumsing you would like to share with ze group???

:gay:

After such a short time here I'm beginning to work out EXACTLY how this place works - absolutely no different to the mx5 forum here in Aus

(www.aus-cartalk.com)

Don flame suit, bag out, and smile over beers. Got to love the MX5/Miata community
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Old 09-29-2006, 05:00 AM   #14
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My drain is like at a 25* angle and its been fine for about 2 years or so. I would say get it as straight as possible but like I said, I have been fine with mine.
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Old 09-29-2006, 03:14 PM   #15
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My drain left the turbo at a 45 degree angle. I never had any issues at all.
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Old 09-29-2006, 04:46 PM   #16
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45 degrees? (!) Holy ish. I get the feeling you could make it drain upside down

But, hey, if it doesn't send out a smoke screen I guess you're fine.
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Old 09-29-2006, 05:11 PM   #17
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Most drains gently slope off the turbo. I see no problem with that. As long as the CHRA itself is vertical -+10°.

Better than the 1-3° of the stock greddy return line.
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