entropy
Moderator
Posts: 8671
|
posted August 09, 2006 03:34 AM
cam cap bolts: weak lil bastids
I have had 3 cam cap bolts fail while working on my #2 motor (senior science fair project).
while torquing them they wouldn't take 106 in-# and started "necking".
(yes, i have a hi quality torque wrench.)
Go figure. Anyone else have this happen??
lil bastids!
____________
This moderator uses moderation in moderation
  
|
aliveagain
Needs a life
Posts: 5033
|
posted August 09, 2006 05:21 AM
I thought it was just me!
Cheap torque wrench here.at least they're fairly easy to remove.
____________
I wondered why the baseball kept getting bigger. Then it hit me.
|
Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
|
posted August 09, 2006 05:56 AM
Is it possable they were over tightened at one time? 106in. lbs. isnt much.
Mine have been off several times and have always pulled torque so far.
Same with the cam gear bolts. They dont need much torque to get the proper stretch from them.
____________
Y2KZX12R
CompetitionCNC.com
|
osti33
Needs a job
Posts: 2973
|
posted August 09, 2006 08:50 AM
quote:
I have had 3 cam cap bolts fail while working on my #2 motor (senior science fair project).
while torquing them they wouldn't take 106 in-# and started "necking".
(yes, i have a hi quality torque wrench.)
Go figure. Anyone else have this happen??
lil bastids!
Your just an animal!! 
No. Haven't had that one happen yet.
|
entropy
Moderator
Posts: 8671
|
posted August 09, 2006 10:27 AM
the fact that the "bolts were necking" sounds bad, but at least they weren't playing with each other's nuts!
____________
This moderator uses moderation in moderation
|
TRNorBRN6001
Needs a job
Posts: 2021
|
posted August 10, 2006 01:25 PM
Hey, ya got to get the little man out for inch #'s and not try to use the big boy foot #'er for everything!
Just kindding ya entropy.
It sounds like something I would do though. I have a headless one I need to get out of my
old clutch hub. Any tips cause it's in further than I'd like.
____________
TFA 200MPH CLUB MEMBER!
|
buddy
Expert Class
Posts: 335
|
posted August 10, 2006 05:25 PM
Gary,
I have a spare clutch hub if you want it.
|
MadMike
Moderator
FEAR THE BLACK FLAG!!!!!!!!
Posts: 6579
|
posted August 10, 2006 08:05 PM
my brother told me if you take an engraver and just hold in on the end of the broken bolt it will work it's way out.... something about the vibration... he says he does it like that when he is working on fork lifts...
Mad Mike
____________
200-MPH CLUB MEMBER!
|
NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
|
posted August 10, 2006 08:12 PM
sounds good in theory.........
____________
42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
6 Time Centerville Dragway Points Champion
Sponsored by:
Scorpion Helmets
Galfer Braking
AMSOIL
Steve's Speed Shop
Kawasaki Sports Center
Mickey Thompson Tires
Catalyst Racing Composites
Conway Cycle
Syed Leathers
|
TRNorBRN6001
Needs a job
Posts: 2021
|
posted August 11, 2006 06:59 AM
Thank ya much Buddy, but I have two. luckily the bike came with a few extra parts when I bought it. This happened last year and I just have not gotten around to getting the bolt out. I will probably pick up a drill press to make sure I get a nice straight hole in the bolt then just use my old bolt extractor kit. .........But I did not know if there was an easier way.
Wish me luck, I'll be headed to JC's on Sunday, plastiguage in hand and a couple choice wrenches. Might even get the head on if I don't strip stuff out or snap bolt heads.
____________
TFA 200MPH CLUB MEMBER!
|
|
|
HOME
NEW TOPIC