Boost Junky 1 Report post Posted March 23, 2009 Hey all, while my heads off my M50 I decided to remove all the old exhaust manifold studs and replace them with new ones. I have got most of them out except for 3 of them. I have tried CRC, vice grips and putting two nuts on the stud and undoing the inner one... they just wont budge! I do not want to snap them off in the head, anyone got some fancy tricks up their sleeve? I thought of even welding somthing to them and undoing them that way.. Luke Quote Share this post Link to post Share on other sites
Forrest 35 Report post Posted March 23, 2009 CRC Penetrate? Let it soak for ages first, several sprays then have a yo Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted March 23, 2009 CRC Penetrate? Let it soak for ages first, several sprays then have a yo Think ive got a product in the gunk range at work thats the same as a penetrate I will give that a go, im leaving the head overnight for the crc to work its magic and see if that works shot bramz Quote Share this post Link to post Share on other sites
Forrest 35 Report post Posted March 23, 2009 or Chemz Penetrate, does the same job Quote Share this post Link to post Share on other sites
huff3r 347 Report post Posted March 23, 2009 Otherwise a pair of stilsons tends to grip better than vicegrips Quote Share this post Link to post Share on other sites
Forrest 35 Report post Posted March 23, 2009 +1 for stilsons, used them on my strut caps. Meaty Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted March 23, 2009 Chur, wat are stilsons? Wana post me some haha not Quote Share this post Link to post Share on other sites
Forrest 35 Report post Posted March 23, 2009 Chur, wat are stilsons? A big f**k off plumbers wrench Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted March 23, 2009 A big f**k off plumbers wrench Ahah! I see hmm im worried the studs will snap off in the thread tho.. hmm Quote Share this post Link to post Share on other sites
huff3r 347 Report post Posted March 23, 2009 A big f**k off plumbers wrench Or if it's just bolts a small-medium one will do Also used them on my strut caps, they are awesome, no other way to describe Quote Share this post Link to post Share on other sites
JiB 0 Report post Posted March 23, 2009 We used freeze spray on the S13's turbo mani, worked ok if you can isolate the cold. Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted March 23, 2009 Or if it's just bolts a small-medium one will do Also used them on my strut caps, they are awesome, no other way to describe No gurantee that the studs wont snap though aye? Just a bit worried cause they would be high tensile correct? And if they have been real hot they will snap more than anything... We used freeze spray on the S13's turbo mani, worked ok if you can isolate the cold. I was thinking of that freeze spray but isolating it like you say could be a problem? Possibly damage the thread in the head as well correct? Quote Share this post Link to post Share on other sites
Mike 1 Report post Posted March 23, 2009 (edited) put a nut on a few threads on and weld it - You'll need lots of heat to make sure it really fuses with the stud. The heat also helps to break the seal. I got a very stubborn stud on the turbo out this way. Edited March 23, 2009 by Mike Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted March 23, 2009 put a nut on a few threads on and weld it - You'll need lots of heat to make sure it really fuses with the stud. The heat also helps to break the seal. I got a very stubborn stud on the turbo out this way. Cheers Mike! Ill crc then do that all at once no doubt ill get em out Quote Share this post Link to post Share on other sites
Andre3000 55 Report post Posted March 23, 2009 Try using three nuts on the stud and tightening the first two together then use the innermost one to unscrew stud. Thats how i got a few difficult ones out on mine. Ive also been using a crc white lithium product more recently and that seems to work better than the crc stuff. Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted March 23, 2009 Try using three nuts on the stud and tightening the first two together then use the innermost one to unscrew stud. Thats how i got a few difficult ones out on mine. Ive also been using a crc white lithium product more recently and that seems to work better than the crc stuff. Haha already tried the three nuts dude. Just feels like the inner nuts going to round.. But yea im definitely going to try a better penetrator. Thanks man Luke Quote Share this post Link to post Share on other sites
*Glenn* 854 Report post Posted March 23, 2009 (edited) Haha already tried the three nuts dude. Just feels like the inner nuts going to round.. But yea im definitely going to try a better penetrator. Thanks man Luke You could try Wurth Rostoff Ice BTW: If you break any of them...give me a ring first before you try getting the broken ones out. There is a proceedure to get them out without any heartache Edited March 23, 2009 by *Glenn* Quote Share this post Link to post Share on other sites
Mike 1 Report post Posted March 23, 2009 ^ Take his advice. I had one break off in the head. Major PITA Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted March 23, 2009 You could try Wurth Rostoff Ice BTW: If you break any of them...give me a ring first before you try getting the broken ones out. There is a proceedure to get them out without any heartache Oh tru is that similar to LOCTITE Freeze & Release Glenn? Ok thanks I will do that cheers Glenn! Quote Share this post Link to post Share on other sites
*Glenn* 854 Report post Posted March 23, 2009 Oh tru is that similar to LOCTITE Freeze & Release Glenn? Ok thanks I will do that cheers Glenn! Its probably similar Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted March 24, 2009 Its probably similar Yea I would say so im going to go try it now, thanks Glenn Quote Share this post Link to post Share on other sites
Boost Junky 1 Report post Posted March 24, 2009 1.5hrs who woulda thought? After applying a whole can of loctite freeze & release, some CRC and the slow agonizing file work to create a grip for my vice grips I managed to free the stupid stud! I have never dealt with such a stubborn stud im amazed i managed to get this one out. Really thought it was going to snap off in the head at one point as it was starting to turn and make noises. Heres the culprate: Quote Share this post Link to post Share on other sites
