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Help!My head bolts ripped the threads out of my block!
Posted 18 October 2003 - 05:58 PM
So, I figured I'd try and tighten the rest without torqing them down and another broke free. :madder:!
I should have known this would happen. The same thing happened when I changed the seals in my oil pump.
Anyway, my question is, when I take my head back off to tap the hole and put a Heli-coil in, will It be OK to reuse my head gsket?
I mean, it probably got crushed little. Will this cause problems?
Anyone know what size Heli-coil to use?
:boohoo: <me right now...... <---me in a few hours
Posted 18 October 2003 - 08:04 PM
you got your motor too hot before the rebuild!
or you are using a torque wrench that is broken
you are looking at a misprint in the chiltons and you are torquing too much.(happened to me on rod bolts)
junkyard motors are cheap:brow:
Posted 18 October 2003 - 08:34 PM
You should be OK with the gaskets as long as final torque was not met. The helicoil is a 12mm but I can't remember the thread pitch. Take a bolt with you and they should be able to match it.
Posted 18 October 2003 - 09:47 PM
Good luck. I would get a new head gasket.
Posted 19 October 2003 - 03:42 PM
My head bolts are 10mmx1.25 I think the Coil kit comes w/ 12mm tap & coils though.
It did overheat. That's why my head gasket blew.
But, I didn't even get to the first torq 22ft lbs. before they spun.
Posted 19 October 2003 - 04:15 PM
Posted 19 October 2003 - 04:59 PM
Originally posted by archemitis
if two pulled out, arent they all going to pull out? thats alot of money in helicoils.
I was thinking the same thing.
A coil kit is $30. That's why I'm lookin for a short block f/s.
I haven't decided what to do yet.:cornfuzz:
Posted 19 October 2003 - 05:29 PM
EA82 head bolts are M11 x 1.25. I would be surprised if yours was unique.
M10 and 11 are very close, and with the same pitch, I can see how someone could mistake them for one another. Here is an EA82 head bolt, from a random EA82 engine, with the "appropriate" die screwed onto it.
You can clearly see M11 and HSS stamped into the die, although you can't see it in the pic, it also says 1.25.
Posted 20 October 2003 - 06:05 PM
Posted 20 October 2003 - 06:24 PM
Posted 21 October 2003 - 04:42 AM
Threads don't pull out unless the block has been really hot. If so, replace the block. (I have a machine shop and do only Subaru's - trust me on this.)
Posted 21 October 2003 - 10:48 AM
Posted 22 October 2003 - 11:37 AM
I already bolted the other head and cam houseing up. Everything on the one side was torqed down pefectly w/ no thread pulling.
So, I don't think it got that hot.
Maybe I'll just try the repair and if it don't work I'll swap the engine.
I guess I'll have to find someone to order me a m11x1.25 coil kit cause nobody has them in stock around here.
Posted 22 October 2003 - 12:00 PM
Is this the engine from the RX in your sig? If so, I'll bet that it is the turbo side head that you are having trouble with...
Posted 22 October 2003 - 01:19 PM
Cost will probably be about USD$5 for 6 coil inserts, including shipping.
Just let me know.
Posted 23 October 2003 - 12:36 PM
I'm gonna try to have someone near by order it.
I'm tempted to use the 10mm I bought.
It seems to fit perfectly.
When I screw the coil onto the bolt it goes on tight and easy with no play.
Do you guys think it would be OK to use it?
BTW...It's a Perma-coil kit not Heli-coil.
Posted 23 October 2003 - 02:36 PM
Try putting the nut from you exhaust manifold (it is M10 x 1.25) onto your headbolt. It WILL NOT work.
Posted 23 October 2003 - 08:17 PM
I cut to size some lengths of rod (use nuts on it to mark your place to cut and clean up your threads) and was pleased.
I was not pleased after doing 1, resetting a fresh gasket (the first delaminated when seperating due to the 1st hole stripping-because I used some copper sealant- which I would not repeat doing-- $30 for another gasket) then I had 2 more fail.
The real problem I made for myself was in the process of drilling- I had no success in hold my 1/2" spade drill plumb and level while piloting out for the coils. This means I ended up with 3 studs facing like this /,\ and straight. I had to rasp out the holes in the darn head to get it to slide over! A little too shady tree to me.
I hope you fare better- if you have help, maybe have someone spotting you as you pilot out the block for you coils.
--PS I felt more secure using 2 coils per hole- if you go 7/16 they are pretty cheap I'd consider it
Posted 23 October 2003 - 09:04 PM
Posted 24 October 2003 - 08:54 PM
Mind you this is a motor out of a $150 car, not even a $150 motor. Nothing but the best as far as threaded rod- grade 3!!!
The goal was to get this car up and about for as little $$$ as possible- I really had no budget for the effort.
This hackjob is about to be retorqued, and It looks like I may keep the car as a second-- When she takes a poop I'll let you know.
Posted 24 October 2003 - 09:45 PM
if two of your headbolts strip out your block is crap and you should throw it away.
Posted 25 October 2003 - 12:59 PM
I don't have an engine puller, if I did I would have bought another engine.
Remember, this is my everyday beater car. I'm just trying to get it on the road before the snow hits so, I won't have to risk crashing my RS.
Anyway, you guys said a 7/16 course coil kit would work. The only one I found was 7/16 14course but, the coil does match the threads.
Can you tell me what size 7/16 you used?
Thanks for your help!
Posted 25 October 2003 - 03:53 PM
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