GPDaytona98 Posted December 21, 2017 Report Share Posted December 21, 2017 So pulled the motor in my 98 GTP yesterday to regasket everything including headgaskets and all the headbolts came right out until I got to the one left of cylinder 3 put up just a little fight and then... SNAP. This is what I'm left with: Someone had definently been in here before seeing as how it had aftermarket head gaskets and the heads had pretty obviously been redone. That being said I don't know if they cross threaded or over-torqued the thing. And because this engine is just full of surprises I found this in the oil pan: Don't know what this is or was but there was a decent amount stuck in the oil pickup and down in the pan. But any help in removing the bolt or just some advice if I should even use this block is greatly appreciated. Quote Link to comment Share on other sites More sharing options...
Imp558 Posted December 21, 2017 Report Share Posted December 21, 2017 Were it me I would hose it down with penetrating oil and leave it. Try to put the block at an angle so the deck is a horizontal surface so it pools. I would hose it down a couple times and then grab it with vice grips tomorrow. If it feels scary you can heat the block with a torch and try to expand it away from the bolt. Gonna level with you though, that fucker is probably crossthreaded in there so you're probably looking at drilling it out and doing a helicoil (which is not as scary as it sounds). Quote Link to comment Share on other sites More sharing options...
GPDaytona98 Posted December 21, 2017 Author Report Share Posted December 21, 2017 Yep that thing was soaked in pb blaster over night and then I torched the hell out of it so it seems like I'm going to have to drill it or take it to a machine shop. Sent from my SM-G955U using Tapatalk Quote Link to comment Share on other sites More sharing options...
wstefan20 Posted December 21, 2017 Report Share Posted December 21, 2017 Ouch! I know these things are torqued ridiculously tight. Someone probably reused the head bolts Quote Link to comment Share on other sites More sharing options...
Nas Escobar Posted December 22, 2017 Report Share Posted December 22, 2017 Plot twist, it's a 3.5 short star. Quote Link to comment Share on other sites More sharing options...
Imp558 Posted December 22, 2017 Report Share Posted December 22, 2017 Yep that thing was soaked in pb blaster over night and then I torched the hell out of it so it seems like I'm going to have to drill it or take it to a machine shop. Sent from my SM-G955U using Tapatalk Yeah, somebody cross threaded it, there was other evidence of questionable work too. Maybe inspect the other holes so they can be fixed at the machine shop. If you drill just be careful not to score the deck with a power tool when you cut that down. Quote Link to comment Share on other sites More sharing options...
vipmiller803 Posted December 22, 2017 Report Share Posted December 22, 2017 Weld a nut to the top. You have quiet a big of chunk sticking out to play with. carkhz316 1 Quote Link to comment Share on other sites More sharing options...
Leadfoot Posted December 22, 2017 Report Share Posted December 22, 2017 Weld a nut to the top. You have quiet a big of chunk sticking out to play with. This, See if you can get a nut that threads onto what is left and weld it. I have had success with this in the past on other stubborn bolts that broke off in inconvenient places. I have often wondered if the heat from welding helped too. Regardless it worked. Quote Link to comment Share on other sites More sharing options...
Marshal Posted December 22, 2017 Report Share Posted December 22, 2017 welding a nut is probably the best idea, but if you don't have access to a welder then you could take a dremel and cut some notches in the top for a screwdriver, or grind a pair of flat spots so a cresent wrench or vice grips can grab someplace Quote Link to comment Share on other sites More sharing options...
FordMan77 Posted December 22, 2017 Report Share Posted December 22, 2017 I've used a pipe wrench on studs like that. Maybe try tightening it back up and then back it out little by little, kinda working it back and forth I've been able to get even cross threaded bolts out before. What a PITA though. Quote Link to comment Share on other sites More sharing options...
GPDaytona98 Posted December 23, 2017 Author Report Share Posted December 23, 2017 Pipe wrench, a 4 foot pipe, and the torch and it finally came out wasn't even cross threaded. Sent from my SM-G955U using Tapatalk Quote Link to comment Share on other sites More sharing options...
FordMan77 Posted December 23, 2017 Report Share Posted December 23, 2017 Good deal! Now, don't forget to get new head bolts wstefan20 1 Quote Link to comment Share on other sites More sharing options...
Imp558 Posted December 23, 2017 Report Share Posted December 23, 2017 That's odd, I've never seen a head bolt that was so tight. Surprising it didn't mangle the threads in the cast iron on the way in. Quote Link to comment Share on other sites More sharing options...
ithurtz Posted January 16, 2018 Report Share Posted January 16, 2018 I would put studs in, screw the tty bolts. Dont forget to chase the threads with a tap to clean the hell out of the threads. Alot of crap will come out. Quote Link to comment Share on other sites More sharing options...
wstefan20 Posted January 16, 2018 Report Share Posted January 16, 2018 I would put studs in, screw the tty bolts. Dont forget to chase the threads with a tap to clean the hell out of the threads. Alot of crap will come out. Agreed, on a aluminum block I would judge you for using a tap to clean the threads, but on cast iron, I doubt it's an issue. That being said, I'm far too paranoid and used the correct thread chaser and not a tap, but we all knew I was insane! >.< Quote Link to comment Share on other sites More sharing options...
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