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, I am also on dsmtuners, dsmtalk, s chassis, Honda forum, club3g and some others but don't use them as much.i mean if you went 129k o the stock precat, beware it may fail soon. you'll only have those problems once, cause once it happens, the motor is done.
dont worry, once you rebuild the motor it will be stronger than it was when it was stock. you could look into things like 07+ headgasket and headbolts, jwt bsr, mmi or prothane, etc.
dont worry, once you rebuild the motor it will be stronger than it was when it was stock. you could look into things like 07+ headgasket and headbolts, jwt bsr, mmi or prothane, etc.
if nissan rebuilt the motor, you most likely dont have any 07+ updated parts. when you rebuild you use 07+ headgasket and headbolts, you can use other motor parts if you wish as well from the 07+ specv. so when your header fails, be sure to look up information about the 07+ parts, you could also look up additional things like mmi or prothane, jwt bsr, etc that are easy to install when rebuilding.
its actually fairly common once the vehicle is over 100k miles, esp if the precat is original. like said once it fails, the ceramic could potentially get sucked back into the motor under 'certain operating conditions', which will score the motor internals. remember, there is no egr on your vehicle! its bad enough they send me plenty of 'safety notices' and hand them out at every inspection each year. the precat and butterfly screws are NOT hyped up items, they are basically ticking time bombs. i mean, its up to you to decide whether or not you should take care of them. cheapest header from ebay +gaskets, nuts, bolts, springs, whatever can still range around $100 as the cheapest replacement, and that includes loctite for the butterflies. if you dont have $100, you could always gut out that precat as well, ie remove the ceramic plates from inside the manifold. do not gut your precat if you live in cali or another state that requires smog tests, you should swap to your precat for when you need to inspect the vehicle.
here's the newest:
http://www.b15sentra.net/forums/showthread.php?t=186854
you can visit other b15 sites, they will tell you the same thing about the precat and butterfly screws, they are tsb's from the factory.
http://www.b15sentra.net/forums/showthread.php?t=186854
you can visit other b15 sites, they will tell you the same thing about the precat and butterfly screws, they are tsb's from the factory.
you could also gut the header, removing the ceramic plates. just dont do this if you live in a state that does smog tests. most people in cali swap their oem catted headers on to get their inspection.
either methods you choose, new or gutted, you will need to use the 2 anti-foulers on your lower o2 so you dont get a p0420 cat below threshold ses code. im sure there's write-up or how-to for that on here somewhere. dont worry, you have another cat on your midpipe if you have the original midpipe that bolts to the header/manifold.
either methods you choose, new or gutted, you will need to use the 2 anti-foulers on your lower o2 so you dont get a p0420 cat below threshold ses code. im sure there's write-up or how-to for that on here somewhere. dont worry, you have another cat on your midpipe if you have the original midpipe that bolts to the header/manifold.
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