broken flywheelbolts??

[WISH ONE]

ok i need some help with this.. i need to know if this can be done or if its safe. heres the deal. i got a new sr long block right. i got down with some backyard performance and A Friend and i put it in at my house. when were were bolting on the flywheel, my friend, either didnt torque the bolts enough or too much. anyway. couple days after having the car running. i notice a rattling noice. it would go away when i depressed the clutch and come back when i released it. iwould happen every so often and in between shifts when the pressure plate is supposed to be engaged and disengaged.. I started to think it was a throwout bearing.. eventually in a couple days my clutch went out completely. so i took it to my friends shop. i bought a new toda flywheel and a new clutch along with a TO bearing. pull the tranny off and the clutch and flywheel fall right off. 3 of the flywheel bolts rattled out and 5 are snapped off in the crank hub. NOW HERE IS THE QUestion. would i be able to back those 5 bolts out and re thread the other 3 and also the crank hub has some damage on it from the flywheel rattling back and forth on it. its kinda cratered. could i take a dremil to it and try to make it smooth again or is there a way i can machine it, sand or file it. to make smooth again... or does this call for a new block or crank... help please...

[cmcdougle]

New block, start over!

I think they make a drill bit at pep boys or something that can back out screws. If they don't, try Home Depot or something.

I dunno about the crank, though.

[WISH ONE]

ya thats what im thinkin.. im just wondering if i cant machine that lil hub to make it smooth again.. it would save me soooo much money!.. thanks tho

[Creim]

Well since they were not torqued down all the way anyway .. you prolly can pick up a reverse drill bit and try your hand at it.

A friend had this problem on his ka . i used the reverse drill bit to get them out

[WISH ONE]

no i wont have a problem getting them out.. but what can i do about the uneven surface of the crank hub.. sand it or machine it.. take a dremil to it what? ill try and take some pictures of it tommrw when im off work.. thanks guys for the help i really appreciate it.. hopefully it all works.. lol i saved forever to get this motor since the other one blew. and now this one is bad lol... gotta love it tho.. i wouldnt trade my pos13 for anything!

[Dream240]

You got a pic of the crank? If you think about it....the surface of the crank is designed to be flat for rotational purposes. If it is made an imperfect surface you will eventually destroy any flywheel and clutch kit you install due to the bad rotational surface....kinda like a domino effect.

I would source out another crank, the rest of the block should be good. Or you could just get another block, prolly easier. Resurfacing the crank surface would change tolerances on the flywheel side and prolly end up causing some expensive damage. Not to metion you will most likely cause the crank to become out of balance by removing some of it's material....bad news.

GL

[georgesal]

you need to take the crank to get machined trust me i had the same problem

[johngriff]

haha! two of my friends in the same thread! SUP george!

Yeah, like is said over text, you'll need to machine it, or it might be FUBAR, take pics and post them up! Or email them to me man.

[email protected]

Those flywheel bolts should be airguned on, to tighten them down IMO. Never have had an issue setup like that.

[GRIPPY]

Damn man i feel for you, same thing happened to me cuz i stupidly forgot to torque as well. I got lucky and stopped driving as soon as i noticed something was wrong. Use lock tite on those things this time too.

[Dream240]

wow, so you guys don't pay attention to the torque specs then? FSM only calls for about 110. That's what I did and haven't had any problems yet......

[johngriff]

I guess i dont. You have a flywheel locking tool dream?

[Dream240]

Yeah my brother-in-law and a 27mm socket!!! (he holds the crank pulley bolt with it)

I'm so

[johngriff]

Yeah, so where is your touqe spec on that? I am sure you cant get an accurate spec like that.

[Dream240]

Well, the pulley bolt is already tight. As long as he holds it steady and it doesn't move, once my torque wrench "clicks" at 110 then it's all good.

Prolly shoulda mentioned I was using a torque wrench.

[johngriff]

I am sure that is a sturdy way to get a tourqe spec, when he is pushing back on it. Using impact on low setting, and cross tourqing, has yet to yeild one issue with the flywheel in 7 years, fyi.

[WISH ONE]

hahaha thanks everyone lol hey john so... either machine it or get a new block im guessing... whats up with that shortblock and turbo.. oh yeah i forgot to ask what turbo is it? thanks again everyone..


mike

[Dream240]

Originally Posted by johngriff

I am sure that is a sturdy way to get a tourqe spec, when he is pushing back on it. Using impact on low setting, and cross tourqing, has yet to yeild one issue with the flywheel in 7 years, fyi.

Oh I'm not saying that's a bad idea, I was just curious as to why you guys never really quote torque specs... I figure as long as it's nice and tight you should be okay. The only thing I would worry about is impacting the bolts with a pneumatic wrench past their torque yield and snapping them off. I'm sure you're careful but I'm also sure it happens to others alot....