Mob...most likely they are 3/8"-16nc thread bolts....16nc = the number of threads per inch. grade 8 bolts would be more than strong enough for this purpose, grade 5 would be sufficient. I agree with the heat cycle theory of why they backed out. A lock washer would help, remember....anti-sieze when installing a iron bolt into aluminum. You can gaul (mess-up) the threads in the heads if not careful. As for extracting..drill it out, use an extractor, chase the threads with a thread chaser. At worse - you'll need a heli-coil kit to repair. If I was closer..I'd jump in the middle of this to help!!!
Good luck...also...remember- if it has tits or headlights.....it's gonna give you problems.
Jim
Good luck...also...remember- if it has tits or headlights.....it's gonna give you problems.
Jim
oh shyt, sorry for the late post but I haven't been on here lately.
I feel bad for ya MOB but we have all been there and made stupid mistakes. In my 65 ranchero I installed a shifter bolt where pressure plates bolts to the fly wheel. No big deal, except the bolt was 1/2" longer and when I turned it over it scrapped like something fierce.
You did good on the head and intake install though. oh and I wouldn't run just 2 bolts, there is a reason there are 3 bolts and I would use them all.
I feel bad for ya MOB but we have all been there and made stupid mistakes. In my 65 ranchero I installed a shifter bolt where pressure plates bolts to the fly wheel. No big deal, except the bolt was 1/2" longer and when I turned it over it scrapped like something fierce.
You did good on the head and intake install though. oh and I wouldn't run just 2 bolts, there is a reason there are 3 bolts and I would use them all.
take a nice bar, prolly 1/4 inch thick, bend it into an L. grind the end smaller so u can weld it to the bolt nicely without nuking the head. get a nice SOLID weld on it, and slowly work it back and forth. if it breaks off, weld it back on.
or weld some metal onto it. so it pokes out and weld a nut on it and try to get it out that way.
that or get a screw extractor or "easy out" drill the hole for it, hammer the easy out in and rotate it out. its a big bolt so u have plenty of meat to work with.
and those bolts are 3/8 i believe.
its not a big deal.
i am sure a shop would take it in a get it out and put it back together for you.
and water pumps are dirt cheap for a fox.
15 buck for a NEW one. and they are SUPER EASY to change.
or weld some metal onto it. so it pokes out and weld a nut on it and try to get it out that way.
that or get a screw extractor or "easy out" drill the hole for it, hammer the easy out in and rotate it out. its a big bolt so u have plenty of meat to work with.
and those bolts are 3/8 i believe.
its not a big deal.
i am sure a shop would take it in a get it out and put it back together for you.
and water pumps are dirt cheap for a fox.
15 buck for a NEW one. and they are SUPER EASY to change.
MAC'n89Blckstng said:
I would do it this way. I've gotten a lot of broken bolts out of thing using the kit. Any hardware or tool place should have the kit. You have to drill in the center of the bolt with the right drill bite. Then put this tool in the hole you drilled and screw the broken bolt out. I know I'm a little late on the topic but oh well.
This is what it looks like.
and here is a site with all the kits.
http://www.grainger.com/Grainger/wwg/itemDetailsRender.shtml?ItemId=1611635784