crank bolt
#1
Burning Brakes
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Would appreciate any best practise proceedures for loosening/tightening the crank bolt on an 87 auto......doing my Murf SC install and would like some advice on this....i had some previous work done which required removal of the pulley's and the mech used a massive set of lock pliers to hold the pulley and chewed ths **** out of the area where the belts run.....i dont want to do this when installing my new pulley. I only have alternator and powersteering belts (airpump and aircon gone). At 220 ftlbs or so, wondering how i hold this tight enough to loosen old then tighten new pulley.
#2
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
the correct way to hold the crank from turning it to install the flywheel lock (tool number 000 721 916 12 fits both auto and manual). then with the flywheel locked you should be able to loosen and tignthen the bolt.
#4
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Would appreciate any best practise proceedures for loosening/tightening the crank bolt on an 87 auto......doing my Murf SC install and would like some advice on this....i had some previous work done which required removal of the pulley's and the mech used a massive set of lock pliers to hold the pulley and chewed ths **** out of the area where the belts run.....i dont want to do this when installing my new pulley. I only have alternator and powersteering belts (airpump and aircon gone). At 220 ftlbs or so, wondering how i hold this tight enough to loosen old then tighten new pulley.
![banghead](https://rennlist.com/forums/graemlins/banghead.gif)
You really need to use the locking tool and a SERIOUS power bar (with a six foot (yes really) pipe extension if necessary to break the crank bolt loose. (Mine took roughly 3x the suggested torque value to release). Be very careful how you do this, because a miscalculation when it breaks free will result in a nasty dent in the bodywork if you're not aligned and ready for it.
Same thing on install. Flywheel lock in place and then bring the bolt up to the spec. torque value.
#5
Three Wheelin'
Join Date: Sep 2003
Location: SF Bay Area
Posts: 1,526
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
The older flywheel lock can be used on the newer cars by clamping it with a pair of vice grips. I saw someone advertizing a universal lock.
Harbor Freight sells a 3/4 inch torque wrench for under $100.
Harbor Freight sells a 3/4 inch torque wrench for under $100.
#6
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I sheared off a 1/2" breaker bar trying to get mine off. a new 3/4" breaker with 5' extension worked.
Also, don't use the short flywheel cover bolts with the lock or you may strip out whatever minimal number of threads their turned into. did that one too.
Also, don't use the short flywheel cover bolts with the lock or you may strip out whatever minimal number of threads their turned into. did that one too.
#7
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
![bowdown](https://rennlist.com/forums/graemlins/bowdown.gif)
Trending Topics
#12
Three Wheelin'
Join Date: Feb 2009
Location: Washington "Dc"
Posts: 1,810
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Hahah, if you think the belt is tough wait til you try to pull the pulley off.
.A flywheel locking tool is a must if you do anything to this car engine wise.
.A flywheel locking tool is a must if you do anything to this car engine wise.
#13
Burning Brakes
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Hmmmmmm...well, guess that explains why my inch and a quarter socket/12 inch bar didnt do much..i have the car on my 4 post lift and am working from underneath....with the fans gone, there's still not a lot of room in there...obvioulsy with a big bar im going to have to work from the topside.
LEFTY LOOSEY - RIGHTY TIGHTY ?
COLIN.....any chance of putting the flywheel lock and a bar on the Greyhound for me?
jt
LEFTY LOOSEY - RIGHTY TIGHTY ?
COLIN.....any chance of putting the flywheel lock and a bar on the Greyhound for me?
jt
#14
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
LEFTY LOOSEY - RIGHTY TIGHTY ?
Yes.
Remember that if you are going to rotate the engine for any reason only do so in a clockwise direction (tightening direction).
Also, if I was you, I would put the engine to the 45° mark on the pully before you insert the flywheel lock, just in case you want to do anything else while you are in there.
Myles
Yes.
Remember that if you are going to rotate the engine for any reason only do so in a clockwise direction (tightening direction).
Also, if I was you, I would put the engine to the 45° mark on the pully before you insert the flywheel lock, just in case you want to do anything else while you are in there.
Myles