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-   DIY Turbo Discussion (https://www.miataturbo.net/diy-turbo-discussion-14/)
-   -   The WTF is this thread (FMIII) (https://www.miataturbo.net/diy-turbo-discussion-14/wtf-thread-fmiii-14936/)

Ben 12-20-2007 09:02 PM

The WTF is this thread (FMIII)
 
Please help me identify these features of the FMIII manifold

http://img507.imageshack.us/img507/7240/manirv0.jpg

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.
http://img145.imageshack.us/img145/8...0817po2.th.jpg

This is the top of the manifold, looking down

http://img530.imageshack.us/img530/3167/mani2kp7.jpg
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


miataz 12-20-2007 09:22 PM

aha is that from the dotd from fm?

Arkmage 12-20-2007 10:05 PM

B appears to be a location for EGR connection.

cjernigan 12-20-2007 10:06 PM

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.

Ben 12-20-2007 10:32 PM

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. :nono: Assholes.

How can I figure out if it's a 1.6 or 1.8 downpipe?

Saml01 12-20-2007 10:41 PM


Originally Posted by Ben (Post 188318)

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.

Braineack 12-20-2007 10:41 PM

a: heatshield
b: EGR
c: wastegate (not sure what you want here)
d: ihi
e: EGT

Braineack 12-20-2007 10:42 PM


Originally Posted by Saml01 (Post 188322)
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.

Saml01 12-20-2007 10:44 PM


Originally Posted by Braineack (Post 188324)
...on the intake, yes.

LOL

:bowdown:

Sorry

Ben 12-20-2007 10:48 PM


Originally Posted by Saml01 (Post 188322)
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

Ben 12-20-2007 10:51 PM


Originally Posted by Braineack (Post 188323)
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

sbrian2 12-20-2007 11:03 PM

If it is for a 1.8, you wanna sell?

Ben 12-20-2007 11:21 PM


Originally Posted by sbrian2 (Post 188343)
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...

y8s 12-20-2007 11:31 PM

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.

sbrian2 12-20-2007 11:33 PM


Originally Posted by Ben (Post 188350)
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.

Ben 12-21-2007 12:11 AM

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 :dunno:
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 :inout:

http://img520.imageshack.us/img520/2218/1010840vp6.jpg
http://img257.imageshack.us/img257/9468/1010842wu3.jpg

Doppelgänger 12-21-2007 12:32 AM

UYmmmm.... i feel like pm'ing you....

Savington 12-21-2007 12:34 AM

Sounds like it's time to send it back and get your money back.

Ben 12-21-2007 12:46 AM

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 :dunno: ?

Markp 12-21-2007 12:57 AM


Originally Posted by Ben (Post 188371)
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 :dunno: ?

Just vent to atmosphere after you cut it... Sounds nasty under full boost. Weld up the downpipe after you cut it.

Mark


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