SteeevO Posted January 8, 2007 Share Posted January 8, 2007 Just wanted to announce that once again my thorleys are spitting exhaust out at the head.... anyone else have these things come loose as often as i??... if i'm going to tear this thing appart again i'm going to know the method to fix it once and for all... any sugestions?. i'm thinking that i am going to replace all the studs and use all new nuts and factory washers.. and use the thorley gasket...if that doesn't do it then i'm revamping everything... VG3.3, computer, P&P, SAS, atlas 4SP, 35's, hydraulic ram steering, but i'll kep the thorleys... then i'll be soo happy about everything else that a exhaust leak won't bother me... -Steeevo (written with sarcasm...but please send sugestions) Link to comment Share on other sites More sharing options...
88pathoffroad Posted January 8, 2007 Share Posted January 8, 2007 Use two sets of Fel-Pro gaskets and try using two lock washers on top. I hear good things about that method. Link to comment Share on other sites More sharing options...
Casey.T Posted January 9, 2007 Share Posted January 9, 2007 When I did mine, I replaced the studs, new washer spacers and new nuts... torqued with a crows foot and all.... No leaks, FelPro Gasket.... The Lock Nuts are disigned for 1 use only... On my 95 when the Passenger side was redone with a stock manifold we just decked the manifold and no gasket... no Leaks and its been 20K+Miles on it so far... Link to comment Share on other sites More sharing options...
Slick Posted January 10, 2007 Share Posted January 10, 2007 When I did mine, I replaced the studs, new washer spacers and new nuts... torqued with a crows foot and all.... No leaks, FelPro Gasket.... The Lock Nuts are disigned for 1 use only... On my 95 when the Passenger side was redone with a stock manifold we just decked the manifold and no gasket... no Leaks and its been 20K+Miles on it so far... amen to that. me too. all new stuff n no problems. Link to comment Share on other sites More sharing options...
SteeevO Posted February 1, 2007 Author Share Posted February 1, 2007 So i replaced the gasket...and did the leak stop?....of course not... this time insted of shutting the hell up for a few days.. it just got louder..something is seriously wrong here... oh well everytihng i guess is gonna get torn appart and it's all gonna be taken care of... i mean everything http://forums.4wdandsportutility.com/70/11...uild/index.html Link to comment Share on other sites More sharing options...
yozsi Posted February 1, 2007 Share Posted February 1, 2007 sounds like the thorleys are warped all to hell, put a straight edge up the the flange and see if they are warped. Link to comment Share on other sites More sharing options...
mws Posted February 1, 2007 Share Posted February 1, 2007 What are you torquing the nuts too? Maybe too much? Link to comment Share on other sites More sharing options...
Casey.T Posted February 1, 2007 Share Posted February 1, 2007 Does sound like something is warped.... Do the straight edge and get them Decked if needed.... Check the Heads too.... Link to comment Share on other sites More sharing options...
SteeevO Posted February 2, 2007 Author Share Posted February 2, 2007 (edited) yeah thats what i was affraid of. but also... am i supposed to be tightening the nuts in a certain order?..and how tight is it supposed to be anyways?... i never had this much trouble when i first put the thorleys on... Edited February 2, 2007 by SteeevO Link to comment Share on other sites More sharing options...
Casey.T Posted February 2, 2007 Share Posted February 2, 2007 From memory... 20lbs???? or 25 lbs.... Link to comment Share on other sites More sharing options...
SteeevO Posted February 2, 2007 Author Share Posted February 2, 2007 looks like i'm gonna have to tear it appart... where can i get them decked??... maybe i'll just march down to thorleys door.. thats where i got them to begin with...the build everything in house..they should be able to fix everything in house too Link to comment Share on other sites More sharing options...
88pathoffroad Posted February 3, 2007 Share Posted February 3, 2007 This is why I suggested two sets of gaskets. At least, it sounds like a good idea. Link to comment Share on other sites More sharing options...
datson Posted February 3, 2007 Share Posted February 3, 2007 I'm sorry for your troubles, but had a happy resolution to my exhaust woes this week. Midas had trashed more than half my exhaust studs and left them that way. I only recently found a shop which repaired the damage for half what Midas charged to muck it up. I carried in the studs and gaskets and paid them $335. I'd been quoted a thousand a side so am very happy with my stock quiet pathy. I hope it lasts and I hope to see your problem fixed, as I've considered Thorleys. Now a letter to Midas corporate, and then to small claims court? Link to comment Share on other sites More sharing options...
Chriskaw440 Posted February 4, 2007 Share Posted February 4, 2007 MIDAS = CRAP! Here is a picture showing how one of their "PROS" installed gaskets on my exhause system. Duhhh... yeah I busted them on it too. Link to comment Share on other sites More sharing options...
mws Posted February 5, 2007 Share Posted February 5, 2007 looks like i'm gonna have to tear it appart... where can i get them decked??... maybe i'll just march down to thorleys door.. thats where i got them to begin with...the build everything in house..they should be able to fix everything in house too If you warped the headers due to overtorquing them, be prepared to compensate Thorley appropriately. After all, they would be repairing the damage you induced, not fixing a design problem. And get a torque wrench before installing this time. I'm willing to bet you've been applying whole lot more torque than is needed and bending/warping the flanges. My experience is that 99% of inexperienced mechanics not using the proper tools overtorque everything. But check with a straight edge first. The Thorleys have a very beefy, thick flange. Maybe it was just bending and did not take a permanent set. And I'd also suggest replacing the studs while you're at it. If you did overtorque, you've stretched and weakened them, which puts them at higher risk of failing. It will be a lot easier to remove and replace now rather than after they snap off. Link to comment Share on other sites More sharing options...
mws Posted February 5, 2007 Share Posted February 5, 2007 MIDAS = CRAP! Here is a picture showing how one of their "PROS" installed gaskets on my exhause system. Duhhh... yeah I busted them on it too. True, dat. Thankfully, now you know better! Trust yourself. No one else. Link to comment Share on other sites More sharing options...
Chriskaw440 Posted February 6, 2007 Share Posted February 6, 2007 When I asked the Manager at Midas where this particular mechanic was, I was told he is no longer there.....he's at another location now AS THE NEW MANAGER! I just laughed and said "yeah he's the best man for the job I guess." They also wouldn't put a higher performance muffler on my rig because "it was too much work and not worth it" yet they sell the brand and the model that would fit a pathfinder....just requires a little more welding. Insisted their Midas brand was just as good and like an idiot at the time, I believed it. Looking back now, I should have just gone someplace else but this was in 2001 and I was a newbie Pathfinder owner at the time. Live and learn. I do most of my work on it myself now just by learning and reading and researching online (like here!). The harder stuff goes to a certified Nissan Import specialist shop and they impressed the hell outta me with my alignment and torsion bar adjustments, and honesty to point out other minor things that "would cost this much...but if you know a fair amount about car repairs...you should be able to do these things yourself, if not, just bring it back by and we'll take care of it for you." Someday I'll get around to changing my knock sensor which has been bad for years. Nissan just HAD to put that damn thing under the intake manifold slap dead center on the top of the block.....wish they just put one on each side of the block instead where they would be ACCESSABLE. My only complaint about the engine design Link to comment Share on other sites More sharing options...
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