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Old 12-20-2007, 10:02 PM   #1
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Default The WTF is this thread (FMIII)

Please help me identify these features of the FMIII manifold



A I assume are standoffs for a heatshield?
B Looks like a threaded plug on the bottom side of the manifold. Looks too small for a EGO probe and too large for an EGT probe.

C The EWG flange gasket is bad. Pick up a new one or have the surfaces milled uber flat?
D There is a flare in the flange here. Should I have the raised section smoothed out to improve flow? Or leave it as is. It looks like it should be cleaned up, but I don't want to sacrifice strength if it's needed. Close up pic below.


This is the top of the manifold, looking down


E is a threaded hole, looks like it's the right size for an EGT probe, but the hole does not go all the way through into the manifold. Does a bracket or something mount here? Or do you drill it through for your EGT probe?

That's all I have for now. Thx

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Old 12-20-2007, 10:22 PM   #2
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aha is that from the dotd from fm?
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Old 12-20-2007, 11:05 PM   #3
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B appears to be a location for EGR connection.
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Old 12-20-2007, 11:06 PM   #4
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A- Looks like standoffs for a heatshield
E- Looks like another threaded hole to bolt down the heatshield
B- Pretty sure that's possibly for EGR even if your car didn't come that way from the factory. Atleast that's what it's for on the other manifolds.
C- I use gaskets but don't plan to with the new upcoming build, either way will be fine i bet.
D- I don't see any issues with you cleaning up that raised area to improve flow
For the EGT probe, i would drill and tap a hole in the #4 runner in the middle, between the turbo and head.
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Old 12-20-2007, 11:32 PM   #5
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Yup, B is an EGR port. Say, why would a 1.6 manifold have an EGR? Because this "1.6 FMIII" manifold is for a 1.8. ********.

How can I figure out if it's a 1.6 or 1.8 downpipe?
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Old 12-20-2007, 11:41 PM   #6
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Quote:
Originally Posted by Ben View Post

How can I figure out if it's a 1.6 or 1.8 downpipe?
Easy. Look at the hole for the exhaust ports. The 1.8 ones are oval shaped, the 1.6 ones have like weird 3 pointed shape to them.
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Old 12-20-2007, 11:41 PM   #7
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a: heatshield
b: EGR
c: wastegate (not sure what you want here)
d: ihi
e: EGT
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Old 12-20-2007, 11:42 PM   #8
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Quote:
Originally Posted by Saml01 View Post
Easy. Look at the hole for the exhaust ports. The 1.8 ones are oval shaped, the 1.6 ones have like weird 3 pointed shape to them.


...on the intake, yes.
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Old 12-20-2007, 11:44 PM   #9
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Quote:
Originally Posted by Braineack View Post
...on the intake, yes.
LOL



Sorry
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Old 12-20-2007, 11:48 PM   #10
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Quote:
Originally Posted by Saml01 View Post
Easy. Look at the hole for the exhaust ports. The 1.8 ones are oval shaped, the 1.6 ones have like weird 3 pointed shape to them.
What? And you're a college grad?
Needz more readingz. I asked about the DOWNPIPE
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Old 12-20-2007, 11:51 PM   #11
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Quote:
Originally Posted by Braineack View Post
a: heatshield
b: EGR
c: wastegate (not sure what you want here)
d: ihi
e: EGT
C: I was asking about the gasket, replace it or mill flat
D: what?
E: Right location, looks like the right size and thread, but it doesn't go through into the manifold. It stops, like it would be a place to bolt a bracket or heat shield to.

And B is an EGR. It didn't occur to me b/c I was thinking 1.6
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Old 12-21-2007, 12:03 AM   #12
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If it is for a 1.8, you wanna sell?
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Old 12-21-2007, 12:21 AM   #13
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Quote:
Originally Posted by sbrian2 View Post
If it is for a 1.8, you wanna sell?
Undecided. I have a 1.8 in the garage and I was planning on a BEGi S5. Economically, it makes sense to keep this. Spiritually, I'm pretty f'n fed up with FM. The joo in me wanted to give them another chance, and well...
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Old 12-21-2007, 12:31 AM   #14
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dont buy wastegate gasket(s), just mill flat and be done with it. it wont leak unLESS you use a gasket.

oh and get new studs stud.
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Old 12-21-2007, 12:33 AM   #15
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Quote:
Originally Posted by Ben View Post
Undecided. I have a 1.8 in the garage and I was planning on a BEGi S5. Economically, it makes sense to keep this. Spiritually, I'm pretty f'n fed up with FM. The joo in me wanted to give them another chance, and well...
Well, I was gonna go S5 on my 1.8, but I'm a cheap bastard and may be intersted if you sell. Let me know soon, since I may pull the trigger on a T3/T4E tomorrow.
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Old 12-21-2007, 01:11 AM   #16
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You don't want it. The dp does not line up with the ewg. What I think is going on here is they sent me a 1.8 manifold and a 1.6 downpipe
It would have been useful if it was all 1.8, but since it doesn't even bolt together it's worthless. I was angry for a minute, but I'm so beyond being aggravated at FM at this point


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Old 12-21-2007, 01:32 AM   #17
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UYmmmm.... i feel like pm'ing you....
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Old 12-21-2007, 01:34 AM   #18
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Sounds like it's time to send it back and get your money back.
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Old 12-21-2007, 01:46 AM   #19
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Sav, recognize the turbo?
A (possible) option: Cut the EWG tube off where it meets the downpipe, and weld the downpipe up. Vent the EWG under the car, maybe through a lawnmower muffler ?
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Old 12-21-2007, 01:57 AM   #20
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Quote:
Originally Posted by Ben View Post
Sav, recognize the turbo?
A (possible) option: Cut the EWG tube off where it meets the downpipe, and weld the downpipe up. Vent the EWG under the car, maybe through a lawnmower muffler ?
Just vent to atmosphere after you cut it... Sounds nasty under full boost. Weld up the downpipe after you cut it.

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