headers

well I was about to get some MSDS headers, but then I saw the how-to and now i have some questions.

If I use my stock y-pipe do i need a flex pipe?? It wasn't very clear in the how-to. Or do I just bolt on the headers, connect the y-pipe to them, and the rest of the exhaust system to the y-pipe and I am ready to go?

Manifold gaskets are optional? So it will be a good idea to change them, but might not be necessary?

Would it be ok, to drive the car with headers and O2 sensors, untill I get som MIL's? Other than check engine light, can something esle go bad??? hmm?

Step 7 from the how-to says:
"Using the below pic as a guide simply cut the EGR in half with a dremel and install the 5/8” compression fitting." --- does that apply onlt for WeaponR headers?? If so, does that mean that the MSDS will fit fine with my stock EGR pipe and 02 sensors?

http://www.contour.org/ubbthreads/s...272039&page=0&view=collapsed&sb=5&o=2&fpart=1

Thanks for the veryfications

8000RPM said:

If I use my stock y-pipe do i need a flex pipe?? It wasn't very clear in the how-to. Or do I just bolt on the headers, connect the y-pipe to them, and the rest of the exhaust system to the y-pipe and I am ready to go?

Click to expand...

The stock 2-bolt flange acts as a flex pipe, you will be fine.

8000RPM said:

Manifold gaskets are optional? So it will be a good idea to change them, but might not be necessary?

Click to expand...

I didnt change them on mine, but its worth it becuase if you have a leak your going to have to re-do the entire installation.

8000RPM said:

Would it be ok, to drive the car with headers and O2 sensors, untill I get som MIL's? Other than check engine light, can something esle go bad??? hmm?

Click to expand...

Your car will run rough and drive like crap. Id wait tell you have the MIL's and do it all at once.

8000RPM said:

Step 7 from the how-to says:
"Using the below pic as a guide simply cut the EGR in half with a dremel and install the 5/8” compression fitting." --- does that apply onlt for WeaponR headers?? If so, does that mean that the MSDS will fit fine with my stock EGR pipe and 02 sensors?

http://www.contour.org/ubbthreads/s...272039&page=0&view=collapsed&sb=5&o=2&fpart=1

Thanks for the veryfications

Click to expand...

The MSDS headers do not need modifications to the EGR, that only applies to Weapon R.

sweet. THANX

Your car won't run like crap if you don't have the MILs. The O2 sensor that is in the header is responsible for monitoring the air/fuel ratio and making adjustments. The downstream O2 sensor is for monitoring the primary catalytic converters. This is the sensor where you install the MIL(get the parts from radio shack for like $7). Running the car without MILs will only produce a check engine light, not unfavorable drinving conditions.

muntus said:

Your car won't run like crap if you don't have the MILs. The O2 sensor that is in the header is responsible for monitoring the air/fuel ratio and making adjustments. The downstream O2 sensor is for monitoring the primary catalytic converters. This is the sensor where you install the MIL(get the parts from radio shack for like $7). Running the car without MILs will only produce a check engine light, not unfavorable drinving conditions.

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Yep. The downstream 02 is what ford calls a CATALYST MONITOR and only monitors the effiency of the cat. To be more specific you will need a 1 mega ohm resistor and a one micro farad cap soldered in series with the signal return. The resistor will lower voltage and the cap will smoothen out wave oscillations.

My SVT ran fine without the MIL eliminators.
I didn't have a CEL right away either, for once I was lucky. I do have MIL eliminators on the car now though. I knew my luck wouldn't hold out and the CEL would have eventually come on.

You probably didn't get an MIL immediatley because some functions require 3 drive cycles to report an MIL. I would think entirely missing o2s would trip it immediatley when it couldn't probe it to test, but, perhaps not.

S

u r right. no 02 sensor will trigger a cel in about 1 min after the engine is on.

8000RPM said:

u r right. no 02 sensor will trigger a cel in about 1 min after the engine is on.

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Like someone else said, it wont drive bad. While you've got it apart just take the downstream O2 sensors and solder in the two components, then use some orange RTV to seal the connections, then tape around them and finally stick a pice of conduit over the connections and secure with two small zip ties.

THe insulation on the O2 sensor wires is teflon so tape will not stay stuck after a while. Corrosion can set in from the moisture. You spread open the wires and smear on some RTV around the completed solder joints and let them cure for a while on the bench. Then you tape up as described. The heat will cause the tape to come loose, that is what the plastic conduit or a thin piece of hose slit open to slip over the wires and secured with the zip ties is for. The wires are a different alloy then just straight copper so you have to get the wire nice and HOT to solder it.

the capacitor goes across two wires, no cutting of the wires, only stripping insulation.
The resistor goes inline on one of the wires, you Will have to cut that wire, strip it back a little then solder the resistor in. There is a schematic floating around that has the colors codes, the wires are gray and black I think. Verify the setup with the schematic that floats around.
The components should cost you about $2.