2001XJ
NAXJA Forum User
- Location
- Canton, MI
Muffler.....
- Thread starter Hydrolock
- Start date
- Location
- Houston, Tx
Yep.
PurpleCherokee
NAXJA Forum User
- Location
- MO
Hey you still haven't answered my question :laugh:
SeansBlueXJ
NAXJA Forum User
- Location
- Plainfield Township, PA
Since the federal issue was answered, I'll adress the "classic car/chip foose" arguemnt... Classic car you do not need to update any systems beyond what was OE. For Foose style stuff, could be a few things, close enough to OE to pass,, or alot of states have "hot rod" "experimental" or "alternitive" use classes that adress and usually exempt this stuff
for your street driven/registered XJ you MUST adhere to OE standards per Fed Regs.
5-90
NAXJA Forum User
- Location
- Hammerspace
I have, however, had good luck using cats rated for BBC on my XJs. Per CA smog checks, they're plenty clean - and since they're rated for a larger engine, they flow just fine for the 242ci. Couple that with a relatively open muffler (I use Walker Turbo IIs - for about $25/copy,) and you can get a decent rumble while still being emissions-compliant.
If all you can find is an "OBD-II" cat (with the HEGO bung in the body or the after tube) and you don't need to use that port, it's a standard thread - M18-1.5. If the parts house doesn't have a plug for it, it's a cinch that an exhaust shop will have a boxful of them.
Does it work on RENIX? No worries. It should also work on later rigs - OBD-I doesn't monitor cat function, and OBD-II should see that the cat is working just fine.
And yes, emissions regs have a Federal basis - which is why there is a separate mandated Federal warranty on emissions components (this can be augmented by the OEM, but the minimum warranty is Federal. And yes, it can exceed the warranty on the rest of the vehicle. No, I don't recall what it is.)
As far as vehicles registered off-road, there is probably a requirement for a "spark arrestor" in the exhaust plumbing - which requirement a cat solves neatly (so there's no reason to pull the thing, and you could end up in violation of safety regs anyhow - either FMVSS or local.)
And Purple? Perhaps the reason you haven't seen answer to your question is that no-one has seen your question in the first place. At least, I rechecked this thread, and I don't see one anywhere? Perhaps I am missing something?
And do make an effort to work and play well with others. We keep getting complaints...
If all you can find is an "OBD-II" cat (with the HEGO bung in the body or the after tube) and you don't need to use that port, it's a standard thread - M18-1.5. If the parts house doesn't have a plug for it, it's a cinch that an exhaust shop will have a boxful of them.
Does it work on RENIX? No worries. It should also work on later rigs - OBD-I doesn't monitor cat function, and OBD-II should see that the cat is working just fine.
And yes, emissions regs have a Federal basis - which is why there is a separate mandated Federal warranty on emissions components (this can be augmented by the OEM, but the minimum warranty is Federal. And yes, it can exceed the warranty on the rest of the vehicle. No, I don't recall what it is.)
As far as vehicles registered off-road, there is probably a requirement for a "spark arrestor" in the exhaust plumbing - which requirement a cat solves neatly (so there's no reason to pull the thing, and you could end up in violation of safety regs anyhow - either FMVSS or local.)
And Purple? Perhaps the reason you haven't seen answer to your question is that no-one has seen your question in the first place. At least, I rechecked this thread, and I don't see one anywhere? Perhaps I am missing something?
And do make an effort to work and play well with others. We keep getting complaints...
JeepFreak21
NAXJA Forum User
- Location
- Cameron Park, CA
PurpleCherokee
NAXJA Forum User
- Location
- MO
Lol, that's because the question that I've asked him several times and on a few different threads, that for some reason he hasn't answered, refers to the quote in his signature regarding my statement about bad valve seals leading to compression loss. For some reason he won't answer me when I ask him what happens when oil leaks down onto the back of an 800 degree valve.
Obviously he's tryin to ridicule me by having this in his signature. And I'm the one who doesn't play well with others?
TheAlmightySam
NAXJA Forum User
- Location
- Portland, OR
I made a recording of my Jeep for you guys. This is a '92 with a 4.0 and a Magnaflow. Not sure what model, because it came this way. I apologize for the mediocre quality of the recordings - my mic didn't pick up the sound of the Jeep real well.
That said, I'm very satisfied with the sound. It's throaty, but not raspy at all, and is pretty much only noisy when I want it to be. At idle and cruising speed, it is almost completely silent. You can tell how much louder my voice is, in comparison, and I talk quietly.
click for great justicehttp://www.subarugirlies.com/sam/exhaust.mp3
That said, I'm very satisfied with the sound. It's throaty, but not raspy at all, and is pretty much only noisy when I want it to be. At idle and cruising speed, it is almost completely silent. You can tell how much louder my voice is, in comparison, and I talk quietly.
click for great justicehttp://www.subarugirlies.com/sam/exhaust.mp3
SeansBlueXJ
NAXJA Forum User
- Location
- Plainfield Township, PA
Or... he could just put a cat on them
Billy
oh no doubt, but im just adressing this part of his post...
He was asuming there was no cats used so I agrued using the understanding there was none myself.
Lol, that's because the question that I've asked him several times and on a few different threads, that for some reason he hasn't answered, refers to the quote in his signature regarding my statement about bad valve seals leading to compression loss. For some reason he won't answer me when I ask him what happens when oil leaks down onto the back of an 800 degree valve.
Obviously he's tryin to ridicule me by having this in his signature. And I'm the one who doesn't play well with others?
He's not doing anything; you're doing just fine without our help.
- Location
- Houston, Tx
I've come to love seeing this in threads:
This message is hidden because PurpleCherokee is on your ignore list.
Makes life alot easier.
This message is hidden because PurpleCherokee is on your ignore list.
Makes life alot easier.
Talyn
NAXJA Forum User
- Location
- Radford, Communistwealth of Virginia
Your answer is: Yes, it is true that you are a complete idiot. Happy now?
