PATHRIDER Posted September 11, 2007 Share Posted September 11, 2007 Hey guys Im getting ready to do my thorleys and any suggestion is greatly appreciated. I have a few question also Im planning on using 8mm x 1.25 x 40mm / metric grade 5 bolts instead of the oem nut and stud....Do you guys think itll be ok for me to maybe go on a grade 8 bolt instead of a grade 5? Since I cant find a copper gasket for the manifold what brand or kind of gasket do you guys use?...I know that the one that came with the thorleys are crap...Ive checked for a gasket before and I can get a felpro I think..Is felpro any good? Thanks fellas Link to comment Share on other sites More sharing options...
mws Posted September 11, 2007 Share Posted September 11, 2007 I've used the Fel-Pro a couple times. Worked just fine with Thorleys. Reminder: Number 1 cause of header leaks is OVER-torquing. Read the manual and follow torque specs carefully. Either class bolt (8.8 or 10.8) will be fine with headers. Link to comment Share on other sites More sharing options...
Casey.T Posted September 11, 2007 Share Posted September 11, 2007 Fel-Pro and do not over torque the bolts when putting on the Thorleys..... Link to comment Share on other sites More sharing options...
PATHRIDER Posted September 13, 2007 Author Share Posted September 13, 2007 Thanks guys..Fel pro it is. Im going to follow the FSM on removing the bolts and re installing them in sequence and also the torque specs Link to comment Share on other sites More sharing options...
PATHRIDER Posted September 14, 2007 Author Share Posted September 14, 2007 Well I manage to snap stud #1 on the drivers side I got some bolt extractor in 9/64 ..the square kind not the spiral. Also stud #4 on the passenger side would not come out...but the nut and the manifold is out..Tomorrow Im going to try one of those bolt and nut extractor..like a socket but has spiral teeth inside..soaked it with pb blaster some more and hopefully it works. any other tricks on taking the snapped stud out of there guys? Im also thinking of using a dremel and notch a slop on there and use a flathead screwdriver to get that out of there...will it hurt any if I hit the manifold surface on the engine block with the dremels cut off wheel? Thanks fellas Link to comment Share on other sites More sharing options...
Casey.T Posted September 14, 2007 Share Posted September 14, 2007 If it is sticking out of the head... ViceGrips.... sorry I missed your call... I worked until almost 8 tonight... Link to comment Share on other sites More sharing options...
PATHRIDER Posted September 14, 2007 Author Share Posted September 14, 2007 (edited) no problem bud.I kinda figure your working on that secretary..I mean that big loan The snapped stud is sunken on the block by about an 8th of an inch..I need to drill and extract it. The stud on the drivers side #4 can be grabbed with a vice grip but when I was trying earlier its just rounding the threaded end...maybe i need to clamp it on thighter..I was getting tired after removing 9 studs with a vice grip. I have a few question though 1.)where does the hot air pick up pipe go to? (pic 1) 2.) Do i still have to use high temp sensor safe silicone sealer? 3.) do I just use clamps on the connection from right side manifold going to the Y pipe or should I have it welded? (pic2) I was dry fitting all the components tonigh including the bolts and it seems that the 8MM X 40MM bolt isnt going to work on a few stud location(pic 3) ..and theyre longer than the oem (pic 4).Has anyone used this bolts? I think using a 8MM X 30MM instead of 40MM bolt would be better...No need to use those thick washers and just use lock washers. Edited September 14, 2007 by PATHRIDER Link to comment Share on other sites More sharing options...
Casey.T Posted September 14, 2007 Share Posted September 14, 2007 I used the 300ZX Studs on mine with new Lock Nuts and my old Spacers... Recessed Broken Stud... Thats a B!tich... there is a write up on here about it... I should be available this afternoon... Can grab the 91 and show you what they look like installed Link to comment Share on other sites More sharing options...
PATHRIDER Posted September 16, 2007 Author Share Posted September 16, 2007 8X30MM works perfect as far as the bolts .I went with the 10.9 also instead of the 8.8 The broken stud came out easy..I think the secret to doing this is taking your time...I soaked it repeteadly with pb while I was extracting it. I used an IRWIN 9/64 square bolt extractor..Perfect size...Ive never had any luck using the spiral type. The EGR tube also went back in without having to fight to get it on there or need to be extended..Thanks Thomas for bringing that mini pipe wrench and helping me install that EGR pipe So far so good..It sounds mean...Im going to take it to a muffler shop monday and have a new cat and muff installed on 2.25 piping Link to comment Share on other sites More sharing options...
Casey.T Posted September 17, 2007 Share Posted September 17, 2007 8X30MM works perfect as far as the bolts .I went with the 10.9 also instead of the 8.8 The broken stud came out easy..I think the secret to doing this is taking your time...I soaked it repeteadly with pb while I was extracting it. I used an IRWIN 9/64 square bolt extractor..Perfect size...Ive never had any luck using the spiral type. The EGR tube also went back in without having to fight to get it on there or need to be extended..Thanks Thomas for bringing that mini pipe wrench and helping me install that EGR pipe So far so good..It sounds mean...Im going to take it to a muffler shop monday and have a new cat and muff installed on 2.25 piping Its a handy little pipe wrench If your going to take it over to American Brake and Muffler... Let me know when and I will go with, get them to give you a decent deal... Link to comment Share on other sites More sharing options...
PATHRIDER Posted September 17, 2007 Author Share Posted September 17, 2007 I was going to take it to them saturday but theyre close.Talked to Mike and he said just bring it in tomorrow.Ill give you a buzz tomorrow morning Link to comment Share on other sites More sharing options...
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