Torque crank shaft pulley

Keep it on topic, it will make it easier to find what you need.
Post Reply
bones

Torque crank shaft pulley

Post by bones »

My pulley came off while driving. I searched and found this has happened to others as well. I looked up the torque value and it states it should be torqued to 88 lbs. how can I torque to this value? When I try to torque the engine turns over. How can I block the engine so I can get it to the torque value?
User avatar
SLOSpider
Posts: 1140
Joined: Wed Mar 03, 2010 2:10 am
Your car is a: 1973 124 Spider 2.0FI
Location: Lompoc, Ca USA

Re: Torque crank shaft pulley

Post by SLOSpider »

You can do a number of things. First I have a manual that says 88 lbs and seen others that say double that. I have done many with just using my impact on them. I have never used locktight rather I use antisieze to get it off the next time. Using a good impact with full 120-130 psi and tighten till she stops is good for me. To hold the pulley I think the best is a GOOD chain wrench that will sit on the frame rail and hold. You can also make a tool or wedge a chisel or whatever to hold the flywheel. Also have seen where rope was fed down a spark plug hole on the compression stroke to stop the piston travel.
1975 124 Spider
1976 Mazda Cosmo http://www.mazdacosmo.com
1989 Chevy k5 Blazer
1967 GT Mustang Fastback
User avatar
RRoller123
Patron 2020
Patron 2020
Posts: 8179
Joined: Sun Nov 13, 2011 2:04 pm
Your car is a: 1980 FI SPIDER 2000
Location: SAGAMORE BEACH, MA USA

Re: Torque crank shaft pulley

Post by RRoller123 »

Chain wrench worked fine for me, Harbor Freight sells them pretty cheap. It was pretty easy with an extra set of hands to hold the chain wrench while I did the torqueing.
'80 FI Spider 2000
'74 and '79 X1/9 (past)
'75 BMW R75/6
2011 Chevy Malibu (daily driver)
2010 Chevy Silverado 2500HD Ext Cab 4WD/STD BED
2002 Edgewater 175CC 80HP 4-Stroke Yamaha
2003 Jaguar XK8
2003 Jaguar XKR
2021 Jayco 22RB
2019 Bianchi Torino Bicycle
User avatar
SLOSpider
Posts: 1140
Joined: Wed Mar 03, 2010 2:10 am
Your car is a: 1973 124 Spider 2.0FI
Location: Lompoc, Ca USA

Re: Torque crank shaft pulley

Post by SLOSpider »

Another thing you could try is to put the car in 5th gear. set the brake, have someone hold the brakes firm and give it a try.
1975 124 Spider
1976 Mazda Cosmo http://www.mazdacosmo.com
1989 Chevy k5 Blazer
1967 GT Mustang Fastback
majicwrench

Re: Torque crank shaft pulley

Post by majicwrench »

THe 5th gear thing will not get it tight enough, too much slack tween the wheel and the crank bolt. NO fun when balancer comes off as you know. Do it right, go buy or rent a cheapy chain wrench, they are useful for lot of thing in life. Do use locknut of some sort on bolt.
bones

Re: Torque crank shaft pulley

Post by bones »

Thanks so much for the replies. I will go get a chain wrench and get this back on the road.
Post Reply