rogezeus2003

In the honda world at least, 99% of turbos failed bc of wrong oil pressure to the shaft. Now, miatas are nicer that any honda, so lets keep our turbos spooling!!! Have I told everybody how nice miatas are?

wayne_curr

iTrader: (8)

You shouldn't need a restrictor if its -3.

wayne_curr

iTrader: (8)

Wtf?

Saml01

iTrader: (9)

The GT turbos are internally restricted.

Braineack

iTrader: (62)

the rear oil seal is just a piston ring. if it's not smoking now, it's not over oiled.

levnubhin

iTrader: (30)

Donno if this helps or not.
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levnubhin

iTrader: (30)

GT ones are, who knows how this thing was built.
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levnubhin

iTrader: (30)

Good to know, would I hurt anything putting in a restrictor for piece of mind?
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leatherface24

iTrader: (10)

i would think that as long as its getting enough oil you should be fine

wayne_curr

iTrader: (8)

Really tough to tell, but that looks like -4. You can restrict with a pop rivet if you wanted to for piece of mind, wouldn't hurt.

hustler

iTrader: (6)

restrict it. I blew seals on 2 turbos back in the day on a journal bearing piece.

dynokiller90

the voice of reason. I have never seen a turbo just all of the sudden develop a leak for no reason other than something being out of wack. if it doesn't leak right a way, it ain't gunna unless something else is wrong. like a stuck seal from coking or a failed thrust bearing.

m2cupcar

iTrader: (5)

Does it make since to put a restrictor in if you're not having a problem? Do you really think you can over oil the bearing(s)? I don't think so. I'm running -3 on a journal bearing t3 w/o issue. Have been now for at least 1,500 miles - half of that for no reason but to beat on it. Oh, and I've got a shimmed oil pump. I'm running near 100psi at 7k rpm.

brgracer

iTrader: (14)

Off topic, curious as to how much you shimmed it. I shimmed mine as well, but haven't gotten to the "testing" part yet.

hustler

iTrader: (6)

The super 60 and t3t04e I killed took a few months to start blowing smoke from blowing the seals.

dynokiller90

and was that the only thing wrong with those turbos?

crashnscar

iTrader: (9)

I would throw a rivet restrictor in. Looks like 4an to me as well.

neogenesis2004

iTrader: (12)

Too much oil pressure on a journal bearing can cause the spool to decrease from increased friction.

hustler

iTrader: (6)

yep...according to the shop who built the 2nd one. (thanks for telling me after the first one, *******)

Cpt_Slow

iTrader: (2)

OK, I just got mine in today, and it has almost no similarity to yours. This was my ebay auction: eBay Motors: Drift T28 GT2860 S13 S14 Upgrade Turbo Charger .49 AR (item 110369223283 end time Mar-30-09 20:31:14 PDT) which is word for word the same as yours, but mine looks completely different. The big .42 A/R cast into the compressor makes me think they just randomly shipped whatever was close to them. I'll take some actual measurements when I get home, but methinks I got the shaft.