About to start header install just wanted some input and had a few questions...

[5ABI VT]

So there's no valve and no possibility of codes right? I'm sure ill see once I drop the manifold and can see the full length of the hose/tube. Ill pound a screw in there as well maybe pop by the steel shoppe nearby and have them weld it at the head to prevent any leaks as the o2 is downstream.

Kicking myself for not having SW eliminate it grr. Thank god I remembered to delete the air I would have cut them off before Installation.

Mike what brackets are you referring to?

[4-cam]

Great writeup.
I will be starting my installation very soon and will be able to use some of your writeup as reference. What I found interesting is the difference in headers as I thought the SW ZR-1 header was all the same but there are differences in tube length and collector design. I ordered mine with the performance connect as I will be doing an FBI style Exhaust and getting rid of my Borla. Take a look at the differences between my header and 5ABI VT'S header with Factory Connect.

Not trying to hijack, just posting an observation.
4-cam

[5ABI VT]

No hijack at all I mentioned it earlier in my thread.
I almost wish I went with the performance connect as well but for ease of install at home and for fitment with a corsa I didn't have much of a choice. The merge is longer And a smoother transition for the primaries.. It makes the factory connect look like a mid length or shortly header :/

Saving grace for me was they're still WAY better than the factory manifolds.

[5ABI VT]

What did you guys do with the port on the plenum side for the egr?

[tomtom72]

I would just like to offer my thanks for your efforts to let us all know what we will be looking at for this job. Specially those of us that will be doing this on the floor! LOL

This took effort on your part and I say a big "Thanks!" that you took the time to help the rest of us. After reading your account and Cliff's I think I have been well briefed in what "to be on the look out for".


Tom

[Dynomite]

Originally Posted by 5ABI VT

What did you guys do with the port on the plenum side for the egr?

On my L98 I found a nice billet aluminum plate made to cover the EGR port. I will go out now and look at my 95 LT5 crate engine as well as the L98 spare engine and L98 installed engine and see if there are any similarities. The EGR block off plates come with nice SS allen head bolts

The L98 and LT5 EGR ports on Plenum are NOT the same (The center to center on L98 EGR Cover Bolts is 1.75 inches and on LT5 center to center of EGR flange bolts is about 1.5 inches). I recommend you cut out a nice EGR cover out of 1/4 aluminum stock and drill as shown in the third photo below (the second photo is one I bought with SS Allen Head bolts).

LT5 (93'-95') EGR Plenum Port.................................................. .....L98 EGR Intake Manifold Port


EGR Cover Plate made from 1/4 inch ALuminum Plate
and Drilled to fit.


And........... if anyone wants to know about installing SW Headers on an L98 as well as eliminating the L98 Air Pump and EGR...
I have done that also

This L98 powers a ZF S6-40 six speed Transmission.



Cliff

[mike100]

Originally Posted by 5ABI VT

...
Mike what brackets are you referring to?

The last photo you posted...if I'm not mistaken, they are still installed- the are the 15" long diagonal braces that sort of form a "K" shape. I guess you could maybe do the job without removing them, but it makes getting the O2 sensor wiring off a little easier on the passenger side. They do not support the motor mount even though it looks like they do.

[5ABI VT]

Originally Posted by 4-cam

Great writeup.
I will be starting my installation very soon and will be able to use some of your writeup as reference. What I found interesting is the difference in headers as I thought the SW ZR-1 header was all the same but there are differences in tube length and collector design. I ordered mine with the performance connect as I will be doing an FBI style Exhaust and getting rid of my Borla. Take a look at the differences between my header and 5ABI VT'S header with Factory Connect.

Not trying to hijack, just posting an observation.
4-cam

Would you mind taking a measurement of the total length for me?

[4-cam]

Just the header or header & cat?

[5ABI VT]

Originally Posted by 4-cam

Just the header or header & cat?

Either or works! Was going to just plug in numbers to see the differences my program spits out on hp/torque.

Unhappy to report that I'm still stuck on that egr tube...

Getting the dremel out to saw off the tube..