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YOUR RESEARCHTime required for cat bypass pipe install
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Use cat bypass pipes, and i'd like
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I picked up a set of used cat bypass pipes, and I'd like to do the install tonight...but I need a functional car tomorrow.
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For the cat clamps, I use the following hose removal pliers to spread the "C" clamps where the bolts go through.
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All,
I picked up a set of used cat bypass pipes, and I'd like to do the install tonight...but I need a functional car tomorrow. This seems like a 1-2 hour job, but if anyone wants to chime in and let me know how long this will actually take, I'd sure appreciate it...
Trick question?
Depends on if your car ever lived in snow regions before.
Mine is from Georgia. Not too hot or not too cold so 2 hours was possible for me on my first try. Have coated it with a bit anti-seize so now should be under 1/2 hour. YMMV
No more then 45min-1 hour. Very easy. 3 bolts on each side where it connects to the headers and the two clamps need to get loosened where cats connect to mufflers. Oh and don't forget to undo the O2 sensors also before you start pulling off the cats.
I'm assuming he's gonna do the switcharoo technique, especially considering it's pointless to get any high flow cats in Cali since it can't pass visual. The only high flow solution for Cali boys would be the reworked Carnewal stock cats with the 200 cell cat elements installed.
()^&)@(#$&%)#($*
Snapped 5 of 6 bolts - even though my car has never seen a real winter as far as I know, the temps from the headers have done terrible things to the bolts for the catalytic converters.
So...off to Autozone, bought some nuts and bolts...and then completely stripped one of the 02 sensors (the threads in one of the 02 sensor bungs were boogered, and I didn't notice until I'd already shaved off most of the threads on one of the 02 sensors.
Since the sensor is already hosed, I spot-welded the little bastard in place. We'll see how poor a decision that was once it goes back together. Either way, I'll be buying a new 02 sensor prior to my next smog check.
Also noteworthy: The ears on the catalytic converter hangers (they face rear off of the motor carrier) had both fatigued off - essentially leaving the cats suspended by the headers and mufflers. Until I replace the bracket, the bypass pipes will at least be less load on those components.
So, this has turned into a 3+ hour job, and will cost me at least one new 02 sensor some time in the future. Grrrrr.
Dang that sucks. Yeah it seems like header and flange bolts are really weak on these cars. I read about the weaksauce before so that's why it took extra time for me the first time as I didn't want to snap any. I pb blasted the heck out of them and let it sit over night.
The bolts holding the cat clamps were pretty hard to turn on mine as well. But all that has been anti-seized for the next switcharoo.
One of the cat clamps has been shoved/worked almost all the way onto the passenger-side muffler pipe - only about 1" of clamp left for the cat, so I'll have to heat it up with the torch tonight and see if it'll expand enough for me to move it back where it belongs.
You never know what you're going to get with a project on a 10 year old car. On the plus side, the delete pipes are way easier to work with than the cats...
Once the 911's up and running again, I'll start thinking about getting those studs out of the cats, and I'll hit them with a borescope to see if the matrix is starting to chunk up.
For the cat clamps, I use the following hose removal pliers to spread the "C" clamps where the bolts go through. Then the whole clamp will expand and slide right out.
http://buy.snapon.com/catalog/item.a...store&tool=all
So... being a soon to be 996 owner, in Florida, where there are no car inspections at all / no emissions checks... should I be looking at removing my cats? What are the pro / con? The cost?
Based on my experience (I finished the install this evening)...omg it's loud.
Catless with Tubi mufflers is way too loud. I'll give it a few days, but I suspect they'll be coming off. I haven't had a chance to get on it properly, so we'll see what that sounds like tomorrow.
If you think cat bypass + Tubi's is loud, don't think about adding headers.
Another Con, is if you don't have a black car, the black soot will show more easily on your rear bumper.
Of course Schnell and I do not have to worry about that.
It got a bit better this morning - I don't know if it was the pipes sooting up internally or everything just getting hot enough to work properly. The jury's still out.
I do not have a sound clip. Rookie move...oops.
If you (or anyone else) is interested in the bypass pipes, let me know via PM - they're just hanging out in my garage now.
