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Old 03-27-2009, 10:07 PM   #1
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Default Wrong oil fitting and now leakage, need help

I have the ebay T28. I had assumed that its oil inlet flange was based off of the garret t28. Well, I guess not. My oil drain had to be custom too but seemed to have worked. My oil feed isn't working. When I put it in before the first start-up its fitment was "okay." After driving it around earlier it started leaking. When I started messing with it, I realized how really loose it is. I really need help finding the correct oil fitting. It is seriously just barely bigger than the garret fitting that I bought.
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Old 03-27-2009, 10:11 PM   #2
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Old 03-27-2009, 10:11 PM   #3
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Old 03-28-2009, 01:06 AM   #4
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really need some help here!
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Old 03-28-2009, 01:11 AM   #5
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I don't think there is an "ebay T28" but rather several different Chinese manufactured turbos. I don't see how anyone on here can tell you what it is without seeing it. There are ways to figure out the size and pitch yourself. Google it.
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Old 03-28-2009, 01:53 AM   #6
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Quote:
Originally Posted by Turbo_4 View Post
really need some help here!
HEY GUYZ I HAV A RANDOM EBAY TRBO AND MY OIL FEED DUZNT FIT RITE PLZ HALP MEE


Seriously, you haven't given us a damn thing to work with. What size fittings are you using now?
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Old 03-28-2009, 02:08 AM   #7
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As in my original post, I have a standard garret fitting and it just barely too small...
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Old 03-28-2009, 02:14 AM   #8
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Let's see a picture of the oil inlet on the turbo. Some nice, clean close-ups where we can clearly see the threads, the bottom of the hole, etc. Don't use your cell-phone. We need clear pics taken from a camera with a macro function.

Maybe a link to the eBay posting you bought the turbo from.

So far, you've basically said "I have a car. Can you tell me what size tires I need for it?"
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Old 03-28-2009, 12:32 PM   #9
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Okay, to start with is the link to the turbo...well except mine obviously did not come with the feed line. But it gives you all the specs about halfway down the page...

eBay Motors: T28 Turbo Turbocharger Civic S13 S14 Int Wastegate +Oil (item 290279180900 end time Mar-29-09 19:31:19 PDT)
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Old 03-28-2009, 12:40 PM   #10
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Quote:
Originally Posted by CXRacing

Perfect for any 4-6 cylinder.

Atleast you got a turbo that 90% of the cars on the road can use.


It doesn't give us much to go on, and not all CHRAs are the same. Your best bet honestly is to invest 8 whole friggin dollars in a thread gage:

Fasteners > Measuring Equipment > Thread Measuring Gages > Thread Measuring Gage : Grainger Industrial Supply

Every garage should have one, and then you don't make Texas car enthusiasts all look like noobs.
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Old 03-28-2009, 12:47 PM   #11
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Does the fact that the standard garret fitting from begi being a hair too small not help at all? Is a garret bb fitting slightly bigger?
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Old 03-28-2009, 02:27 PM   #12
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Okay, I've Googled a bit and it seems a lot of the ebay turbos are using 1/8npt fittings? Can any Ebay turbo-ers confirm this?
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Old 03-28-2009, 02:32 PM   #13
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When you go to the store to buy the fitting, just take the turbo with you.
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Old 03-28-2009, 04:00 PM   #14
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Okay, lowes didn't have anything that fit perfectly BUT I found something close. The 1/8npt is way too lose. The 1/4npt is just a bit too big. BUT a 1/4 flare screws in somewhat tight. Still a bit lose like the standard garret fitting but after a few turns stays tight.
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Old 03-28-2009, 05:17 PM   #15
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You know, there are a LOT of fractional sizes between 1/8'' and 1/4''... maybe its one of those... I still say figure out the threads for yourself. Like GoSpeed said, you can buy a thread gauge to figure it out, or bring it to a machine shop and have them tell you.

I'm also going to guess its a metric fitting.
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Old 03-28-2009, 05:22 PM   #16
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I was thinking it might be metric too...I was also thinking about using a bb garret fitting...
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Old 03-28-2009, 05:35 PM   #17
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call summitracing, they carry a large assortment of fittings to make that work. is it bsp threads? because that is different then npt and metric threads.
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Old 03-28-2009, 05:40 PM   #18
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Quote:
Originally Posted by Turbo_4 View Post
Okay, lowes didn't have anything that fit perfectly BUT I found something close. The 1/8npt is way too lose. The 1/4npt is just a bit too big. BUT a 1/4 flare screws in somewhat tight. Still a bit lose like the standard garret fitting but after a few turns stays tight.
I don't know what it is, but I can't imagine a chinacharger not having something metric. Most things that come there are metric. Is there a cone inside the port where the fitting goes? If so, it likely does need a flare fitting.

The only place that I could find a fitting to fit my T25 was here:

-4 size Oil inlet fitting for T25/T28 or unrestricted GT25R/GT28R/GT30R/GT35R: atpturbo.com

It does say that it is 1/4" inverted flare. I needed it mostly because most oil feed lines/fittings that I found were -3AN instead of -4AN and I had a -4AN line.
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Old 03-28-2009, 05:46 PM   #19
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well if thats a 1/4 flare then thats probably my best bet
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Old 03-29-2009, 09:12 PM   #20
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Quote:
Originally Posted by Turbo_4 View Post
well if thats a 1/4 flare then thats probably my best bet
You said it was tight, though. The whole perpose of a flare fitting is the threads don't seal - they just hold the fitting tight to the flare. I'm concerned if it is that tight you won't seat on the flare properly. It's probably SUPPOSED to be 1/4 flare and was tapped crappy.
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