AnTmanS130T Posted July 23, 2005 Share Posted July 23, 2005 Well I have a pretty modified l28et and it seems that the exhaust manifold gives nothing but trouble. As soon as the new motor was built it ran great and then after a few months I heard extremely loud ticking.. looked over everything besides the exhaust manifold later to find out that it was totally loose and leaking. So I drive it for a month or two and the gasket goes which the car ran horrible and barely built any boost etc. Ok so I clean the surface buy a new gasket and spray it with copper. It runs great for a little and then begins to tick again so I tighten all the bolts and it's ok .. for some reason I don't understand why the bolts become loose so quick. I mean it needs to be tighten about every 2 weeks or so. It's ridiculous. A few days ago I hear it ticking again and today I go to retighten them.. well all of them are good besides one I come across.. I put the wrench on it and the nut just spins and so I go (wow it's really loose) I keep turning it and come to find out the thread hole on the head is shot. Does everyone experiece the manifold always giving trouble and if so is there a good solution to this. A friend of mine said I can put stainless steel helicoils in and buy butter bolts and it should never have problems again. He mentioned the stock bolts suck and the the head being aluminum tightening them so much (which needs to be done for the fact of it being loose all the time ) will strip easily. I am pretty pissed off at this car If anyone has advice or personal experiences please post them. Quote Link to comment Share on other sites More sharing options...
DaleMX Posted July 23, 2005 Share Posted July 23, 2005 Sounds like it got over torqued. Bolt stretch is what keeps it tight. Once that is gone there is no force left to hold it and the threads get buggered up. Personally I always use new bolts on engine parts. Some of that stuff is torque to yield and can only be used once. Drill and coil time. Put some aluminum anti seize on the bolts and torque to the proper number. Quote Link to comment Share on other sites More sharing options...
AnTmanS130T Posted July 23, 2005 Author Share Posted July 23, 2005 I was able to rethread it without pulling everything entirely apart. All new bolts are going on with some thread lock. The hayness calls for torque to be at 14 lbs so that's what it's going to be. Quote Link to comment Share on other sites More sharing options...
spork Posted July 24, 2005 Share Posted July 24, 2005 have you check to see if your manifold is flat/straight? I know it might seem to be a silly question, but if it's even a little warped, that could be why you've been having problems keeping it to seal and over torquing the bolts. I've also heard of going to studs all around and not using bolts. Studs can handle more torque before stripping than a bolt will Quote Link to comment Share on other sites More sharing options...
AnTmanS130T Posted July 25, 2005 Author Share Posted July 25, 2005 I honestly never had the manifold checked for straightness, I think it may be off and causing these problems. Good point, I was thinking this a while ago when the gasket blew from the number 6 runner which is usually the one that determines the manifold is warped. Quote Link to comment Share on other sites More sharing options...
spork Posted July 25, 2005 Share Posted July 25, 2005 the next question is...what gasket are you using? I;ve had teriblle problems getting anything other than the nissan gasket to seal properly. The OEM gasket is far superior and sealing vs felpro or other paper style gaskets Quote Link to comment Share on other sites More sharing options...
AnTmanS130T Posted July 25, 2005 Author Share Posted July 25, 2005 Interesting you say that.. this is my second Felpro replacement gasket. The next time it goes I will have the manifold spec'd and try the Nissan OEM gasket. Thanks for the advice. Quote Link to comment Share on other sites More sharing options...
Guest ON3GO Posted July 25, 2005 Share Posted July 25, 2005 i would use the factory gasket only. i had the same problems when i ran the felpro. mike Quote Link to comment Share on other sites More sharing options...
CART0410 Posted July 15, 2007 Share Posted July 15, 2007 If you want a new hardware kit go to http://www.freewebs.com/pallnet/ they have a stud kit that will work.. I am still trying to find a gasket that works too. I have gone through 2 "OEM" gaskets from NISMO.. Quote Link to comment Share on other sites More sharing options...
Daeron Posted July 16, 2007 Share Posted July 16, 2007 put the shovel away!!!! no need to dig up old threads and ressurect them like youre some sort of Doctor Frankenstein (pronounced "frahn-en-steen" as in, "froderick frahnkensteen") Quote Link to comment Share on other sites More sharing options...
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