Breaking bolts

The place for all technical car discussions. If you haven't already, read our Disclaimer first!

Moderator: The Mod Squad

Breaking bolts

Postby TRD_ZERO » Sat Dec 13, 2008 10:29 am

Ok so i started torquing up the botls on the oil retainer and it just seems like they wanted to turn forever. The torque bar never clicked, eventually one of the bolts just snapped. Now do i replace just the one bolt or all of them to the same grade? And why does it just keep turning?
User avatar
TRD_ZERO
Toyspeed Member
 
Posts: 1077
Joined: Sun Jul 16, 2006 12:24 pm
Location: Howick

Postby Mr Revhead » Sat Dec 13, 2008 10:45 am

check your reading and setting the torque correctly.

the very first clutch i did i got a mate to read the specs out of the manual
i was torquing up the bolts for the clutch cover, and he read out the flywheel bolt spces! being a n00b i didnt click that they were waaay too high until i did what you just did.

how bigs your torque wrench? most are quite long and if your doing up a small bolt, you wont feel it get tight
Being the subject of E-whinges since 2004 8)

http://www.centralmotorsport.org.nz/home

Image
User avatar
Mr Revhead
SECURITY!
 
Posts: 24635
Joined: Tue Jan 20, 2004 4:06 pm
Location: Nelson

Postby matt dunn » Sat Dec 13, 2008 10:54 am

What was the torque you were trying to do them up too?
7AGTE - DX20VT - viewtopic.php?t=59733
Discussion - viewtopic.php?t=59751
matt dunn
Toyspeed Member
 
Posts: 7109
Joined: Fri Sep 12, 2003 1:01 am
Location: Timaru

Postby TRD_ZERO » Sat Dec 13, 2008 11:41 am

I was doing it up to 8 ft-lbf and the torque wrench is really long but i tested the setting on a already torqued bolt and it clicks. The manual i have doesnt have the section to show the torque settings for the oil retainer.
User avatar
TRD_ZERO
Toyspeed Member
 
Posts: 1077
Joined: Sun Jul 16, 2006 12:24 pm
Location: Howick

Postby bluemaumau » Sat Dec 13, 2008 11:48 am

bolt was probley $&#$%. i broke one holding the oil collector pipe too.
4AGTE AE101 COROLLA - 90%

Where the $&#$% is that oil leak coming from /club

looking for enkei RP01 center caps (white)
User avatar
bluemaumau
Toyspeed Member
 
Posts: 4087
Joined: Sun Oct 16, 2005 7:08 pm
Location: SYDNEY, NSW

Postby TRD_ZERO » Sat Dec 13, 2008 12:11 pm

what i dont understand is why the bolts just keep turning and turning. They are pretty tight im just scared to try and do it with the other bolts and they snap inside of the block.
User avatar
TRD_ZERO
Toyspeed Member
 
Posts: 1077
Joined: Sun Jul 16, 2006 12:24 pm
Location: Howick

Postby MAGN1T » Sat Dec 13, 2008 12:50 pm

Just like headbolts..... you've torqued it past it's yeild point so it stretches until it snaps.

Steve
Computers make you go mad.
MAGN1T
!USER HAS BEEN BANNED!
 
Posts: 646
Joined: Mon Jun 10, 2002 11:34 pm

Postby rollaholic » Sat Dec 13, 2008 4:40 pm

does the torque wrench actually work that low?

most of the big ones i have seen have much higher minimum settings
BASU!
User avatar
rollaholic
Toyspeed Member
 
Posts: 5383
Joined: Fri May 28, 2004 2:19 am
Location: West is Best

Postby evil_si » Sat Dec 13, 2008 5:23 pm

what size torque wrench are you using? whats its max torque,
general rule of thumb a torque wrench is no good at the lower 30% of the scale

on a torque / bolt that small you need a small 3/8 or even a 1/4 drive torque wrench

personally i do small stuff upto 20ftlb by hand with out a torque wrench,

you will probably find it feeled like it nipped then felt a little give as it started stretching the bolt before it snapped
User avatar
evil_si
Toyspeed Member
 
Posts: 2353
Joined: Sat Nov 01, 2003 6:19 pm
Location: TAURANGA, Pyes Pa

Postby TRD_ZERO » Sat Dec 13, 2008 6:25 pm

Im using a rather large torque wrench minimum setting is 20 ftlbf but im still able to wind it backwards. So whats the suggestions then smaller torque wrench and new bolts? Just replace one bolt? Ideas?
User avatar
TRD_ZERO
Toyspeed Member
 
Posts: 1077
Joined: Sun Jul 16, 2006 12:24 pm
Location: Howick

Postby evil_si » Sat Dec 13, 2008 7:21 pm

if you have overtightened them replace them all,

definatly get a smaller torque wrench,

just because you can wind it backwards doesnt mean it will work,
they start higher because the lower end of the scale isnt accurate
User avatar
evil_si
Toyspeed Member
 
Posts: 2353
Joined: Sat Nov 01, 2003 6:19 pm
Location: TAURANGA, Pyes Pa


Return to Tech Questions

Who is online

Users browsing this forum: No registered users and 10 guests