5523Pathfinder Posted April 25, 2014 Share Posted April 25, 2014 I just noticed, and it dawned on me, how did you adjust the valves? Hydraulic lifters don't need adjustment. Did you do it? A shop? And before or after your power issues? Link to comment Share on other sites More sharing options...
HappyCarGuy Posted April 25, 2014 Share Posted April 25, 2014 As far as more hp goes, not sure if just an exhaust system will work. I have aftermarket exhaust from headers to tailpipe (highflow to reduce restrictions). It's loud, and it has a little more horsepower, but I still have trouble rolling up those hills. I'm not sure where you live, but if you're in high-altitude, there's not much you can do - short of forced induction/tuning/engine swap. Exhaust WILL get you more hps, but I don't think it'll be enough. You can tune it to have a richer mixture (richer mixture = a little more hp). That being said, richer mixture will cause your cat to go out a little faster, and potentially not being able to pass emissions (higher HC's and CO's from unburnt fuel). Maybe if you tuned it and a new exhaust system you could get enough hps? Link to comment Share on other sites More sharing options...
enkrypt3d Posted April 25, 2014 Author Share Posted April 25, 2014 Well im hoping this exhaust isn't too harsh or annoying and just gives it some more torque... the new MAF sensor didn't really seem to make much difference though. The timing was done with the new distributor cap / rotor / plugs and wires...... after all that was done it was running very strong and it just recently started sputtering and has less power. Link to comment Share on other sites More sharing options...
enkrypt3d Posted April 26, 2014 Author Share Posted April 26, 2014 Ok so i got the headers..... and noticed that the bung for the o2 sensor is hanging off of only one of the runners. which means the ECU will only be able to monitor the o2 from one cylinder. I've seen this cause problems before on my NSX (which is OBD II)... would this cause a problem for the 95 pathy? is it OBD II or I? Link to comment Share on other sites More sharing options...
5523Pathfinder Posted April 26, 2014 Share Posted April 26, 2014 Are you talking about the left side? That's for the EGR tube. O2 is a bit further back Link to comment Share on other sites More sharing options...
enkrypt3d Posted April 26, 2014 Author Share Posted April 26, 2014 Its hard to tell how all these header parts fit together honestly.... is the pathfinder obd 1 or 2? Link to comment Share on other sites More sharing options...
5523Pathfinder Posted April 26, 2014 Share Posted April 26, 2014 1. Obd II is 96 and newer. Link to comment Share on other sites More sharing options...
enkrypt3d Posted April 26, 2014 Author Share Posted April 26, 2014 whew that makes it much easier for smog... my 95 nsx is obd 2 fml Link to comment Share on other sites More sharing options...
enkrypt3d Posted April 30, 2014 Author Share Posted April 30, 2014 Would the oem heat sheilds fit over the doug thorley headers? just curious Link to comment Share on other sites More sharing options...
Precise1 Posted April 30, 2014 Share Posted April 30, 2014 No, the heat shields actually mount to the stock manifolds. They are useless and you don't want them anyway... B Link to comment Share on other sites More sharing options...
enkrypt3d Posted May 1, 2014 Author Share Posted May 1, 2014 What cats should I run and not have to worry about passing ca smog? Link to comment Share on other sites More sharing options...
Precise1 Posted May 1, 2014 Share Posted May 1, 2014 I can't recall the exact model #s for the Magnaflow I used, but there were two. One direct bolt in and one universal weld in; I went with the bolt. The info is here for the searching, but the other trick it to look them up. If it doesn't say 'CARB certified', it isn't going to fly and if it says 49 states and/or will not ship to Ca, well, that's not going to fly either. B Link to comment Share on other sites More sharing options...
SkiBumBrian Posted May 1, 2014 Share Posted May 1, 2014 What cats should I run and not have to worry about passing ca smog?I actually ordered my CARB compliant Magnaflow cat and Gibson muffler from JC Whitney. Im with B on this one, I got the flanged one too. Link to comment Share on other sites More sharing options...
enkrypt3d Posted May 1, 2014 Author Share Posted May 1, 2014 http://www.jcwhitney.com/benchmark-oe-replacement-catalytic-converter-49-state-legal-no-ca/p3038581.jcwx?filterid=d1685y1995g119j1 is it this one? Their website sucks. I'm never really sure what the product looks like or if it actually fits...... Link to comment Share on other sites More sharing options...
SkiBumBrian Posted May 1, 2014 Share Posted May 1, 2014 (edited) No, mine is a Magnaflow. It is also a full flow cat, unlike these that are OEM replacements. Let me see if I can find the one I bought... I am pretty sure this is it. I have to back up on what I said earlier though, the muffler guy welded the old flange onto my cat so it is bolt on now. I remember not wanting to pay the extra cash for the "direct fit" one.... http://www.jcwhitney.com/magnaflow-california-legal-semi-universal-catalytic-converters/p3089531.jcwx?filterid=d1685y1991g26j1 Edited May 1, 2014 by SkiBumBrian Link to comment Share on other sites More sharing options...
Precise1 Posted May 1, 2014 Share Posted May 1, 2014 A brief search showed this http://www.nissanpathfinders.net/forum/topic/32573-buying-a-new-magnaflow-cat/?p=614160 B 1 Link to comment Share on other sites More sharing options...
enkrypt3d Posted May 2, 2014 Author Share Posted May 2, 2014 No, mine is a Magnaflow. It is also a full flow cat, unlike these that are OEM replacements. Let me see if I can find the one I bought... I am pretty sure this is it. I have to back up on what I said earlier though, the muffler guy welded the old flange onto my cat so it is bolt on now. I remember not wanting to pay the extra cash for the "direct fit" one.... http://www.jcwhitney.com/magnaflow-california-legal-semi-universal-catalytic-converters/p3089531.jcwx?filterid=d1685y1991g26j1 Saw that you have the same setup as I do... did you have to do any welding to get your gibson exhaust to connect to the muffler? also I see where the Y pipe is on the thorley headers that it needs weldin too is that right? Link to comment Share on other sites More sharing options...
enkrypt3d Posted May 2, 2014 Author Share Posted May 2, 2014 (edited) Also those cats are only 2" in diameter? not sure if that is correct for the headers / exhaust... http://www.amazon.com/MagnaFlow-339004-Stainless-Universal-Catalytic/dp/B00BF2YUB2 Edited May 2, 2014 by enkrypt3d Link to comment Share on other sites More sharing options...
SkiBumBrian Posted May 2, 2014 Share Posted May 2, 2014 The 2" is the only one I could find that was CARB legal, I really don't see a need to go bigger anyway. Too large an exhaust just pushes your torque curve higher in the RPM range.. The Gibson muffler was a weld in. After I busted every knuckle and nerve I have wrestling the headers on, I just bolted it to the stock setup and took it to a muffler shop and spent 175.00 for him to bend everything and weld it all. He did a superb job. At the crossover a lot of guys just goop it up with some copper based silicone. I took a band clamp with some fireproof wrap and sealed it that way, it doesn't leak. At least so far. Link to comment Share on other sites More sharing options...
Precise1 Posted May 2, 2014 Share Posted May 2, 2014 Saw that you have the same setup as I do... did you have to do any welding to get your gibson exhaust to connect to the muffler? also I see where the Y pipe is on the thorley headers that it needs weldin too is that right? If you weld it, it'll be a problem if you ever need to remove it. I used some Permatex copper RTV and a Walker lap joint band clamp that was a perfect fit. I'll look up the part number tomorrow. And yes, while you might be able to fudge it, 2" diameter is the only CARB legal fitment for your vehicle. B Link to comment Share on other sites More sharing options...
enkrypt3d Posted May 2, 2014 Author Share Posted May 2, 2014 If you weld it, it'll be a problem if you ever need to remove it. I used some Permatex copper RTV and a Walker lap joint band clamp that was a perfect fit. I'll look up the part number tomorrow. And yes, while you might be able to fudge it, 2" diameter is the only CARB legal fitment for your vehicle. B Well I dont have a choice but to have the exhaust welded to the muffler... I was hoping it had flanges... Or I guess I could have them add some? Link to comment Share on other sites More sharing options...
Precise1 Posted May 2, 2014 Share Posted May 2, 2014 Sorry, I was talking about the Thorley header Y pipe... B Link to comment Share on other sites More sharing options...
enkrypt3d Posted May 3, 2014 Author Share Posted May 3, 2014 yea so whats the process just spread it around till it makes a seal? Link to comment Share on other sites More sharing options...
Precise1 Posted May 5, 2014 Share Posted May 5, 2014 (edited) One piece sleeves into the other. You put the small end of the clamp first on the small pipe, then you install the the 2 pieces of pipe, sleeving the small one into the large one. When you have everything bolted up and torqued, put some of the Permatex Copper RTV around the small pipe, right at the joint about 1" wide, do the same for the larger pipe, slide the clamp in place over both of them and tighten it up. B Oh, almost forgot... Walker Mega-clamp #33230 http://www.summitracing.com/parts/wlk-33230 Edited May 5, 2014 by Precise1 Link to comment Share on other sites More sharing options...
enkrypt3d Posted May 12, 2014 Author Share Posted May 12, 2014 Hey guys on the doug thorley headers, does the OEM EGR pipe connect to these aftermarket headers? or is there some sort of an adapter? Just wondering as the place where the pipe connects doesn't appear to be on the same place as the OEM manifolds... Link to comment Share on other sites More sharing options...
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