Identify these O-Rings

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Identify these O-Rings

Postby ___Scott___ » Sat May 28, 2016 6:48 pm

I bought a Fel-Pro "valve grind" gasket set for a 1st gen 3SGTE and for the most part it appears to be correct. The gasket between the exhaust manifold and turbo is the wrong one, so I accept that the circled o-rings may be wrong too. Before I overlook something important, does anyone recognize them and know where they go?

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Re: Identify these O-Rings

Postby fussellbug » Sat May 28, 2016 8:07 pm

This is only a guess, but the EPC shows oil cooler o-rings included in the Engine Overhaul kit, so that may be what they are.

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Re: Identify these O-Rings

Postby ___Scott___ » Sat May 28, 2016 8:24 pm

There are o-rings in the kit that match the size of the OEM oil cooler o-rings (which I bought from the local dealer and already installed,) but they are bigger than these.
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Re: Identify these O-Rings

Postby alltracman78 » Sat May 28, 2016 11:28 pm

There's 4 of them so I'm guessing they're for the injectors.
IIRC there actually should be 8.
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Re: Identify these O-Rings

Postby ___Scott___ » Sun May 29, 2016 1:59 am

That hadn't even occurred to me so I ran back out to the shop, pulled an injector from the fuel rail and looked at its o-ring. Too small.

Here is another pic that gives a better idea of the scale relative to the injector o-ring.

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Re: Identify these O-Rings

Postby underscore » Sun May 29, 2016 3:29 pm

Spark plug tubes? Given that there's 4 of them.
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Re: Identify these O-Rings

Postby ___Scott___ » Sun May 29, 2016 5:04 pm

I think they are too small for spark plug tubes and the 1st gen 3SGTE doesn't have them anyway.
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Re: Identify these O-Rings

Postby audiodjmp77 » Sun May 29, 2016 5:04 pm

Looks like injector seals. I may be wrong though
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Re: Identify these O-Rings

Postby audiodjmp77 » Sun May 29, 2016 5:06 pm

underscore wrote:Spark plug tubes? Given that there's 4 of them.

The spark plug ones are like a fig 8 for the middle plugs and the outer ones are with the rocker gasket
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Re: Identify these O-Rings

Postby celicast184 » Mon May 30, 2016 3:50 pm

Orings are for injectors... This kit must be for a 2nd gen 3sgte. Gen1 had single entry turbo as to the gen2 which is twin entry. Which is why u gotten the wrong turbo gasket
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Re: Identify these O-Rings

Postby ___Scott___ » Tue May 31, 2016 3:24 am

The kit seems to be a mix of both gen1 and gen2. The cam cover gaskets are correct for gen1 and they are not interchangeable with gen2. I'm not sure if the cam seals are interchangeable, but they fit the gen1 correctly. The oil cooler o-rings are the correct size, but slightly different than the OEM o-rings (which are similar to the orange o-ring in this pic: http://www.turbomr2.com/MR2/HowTo/Engin ... racket.jpg)

The gasket for the water neck with all the sensors in it was close enough but I suspect it wasn't originally designed for the gen1 engine.

It doesn't matter now. The engine is back together and ready to go back in the car tomorrow.

Thanks to everyone who offered ideas. I assume the mystery o-rings are for some other engine and are now designated "spare" like a bunch of other stuff in the gasket set.
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