Crank pinning Question
Thread Starter
Racer
Joined: Sep 2002
Posts: 402
Likes: 1
From: Clearwater FL
Crank pinning Question
Just finished pinning the crank. I do not see where it says how much torque I need to put on the bolt when putting it back in. Does anyone know how many ft lbs it should be.
Thanks
Thanks
Melting Slicks
Joined: Sep 2005
Posts: 2,670
Likes: 134
From: merritt island fl
C1 of Year Finalist (stock) 2019
2016 C1 of the Year Finalist
2015 C2 of the Year Finalist
I asked the same question re. the C-5 a few months ago. Got only one answer, it was 240 ft-lbs. Sounds reasonable to me.
Burning Brakes
Joined: Jul 2006
Posts: 849
Likes: 2
From: Southern Florida
The spec is the same for both the C5 and 6
1 - Tighten the used crankshaft balancer bolt to 330 N·m (240 lb ft).
2 - Remove used bolt and tighten the new crankshaft balancer bolt a first pass to 50 N·m (37 lb ft).
3 - Tighten the new crankshaft balancer bolt a second pass to 140 degrees
1 - Tighten the used crankshaft balancer bolt to 330 N·m (240 lb ft).
2 - Remove used bolt and tighten the new crankshaft balancer bolt a first pass to 50 N·m (37 lb ft).
3 - Tighten the new crankshaft balancer bolt a second pass to 140 degrees
Race Director
Joined: Jan 2006
Posts: 18,396
Likes: 169
The easiest way to determine the 140 degrees is to run the initial torque reading, then mark zero straight up on the bolt head, then, using your kids protractor, mark 140 degrees on the balancer. When the two marks align, you've hit the 140 degrees necessary. But, good luck in reaching that mark. I got to around 100 degrees, and just could not get any further, even with a 4 foot length of pipe as an extension. I loaded the bolt with red Locktite, so I hope it will be enough. It's gone approx 2000 miles since the install with no issues. It's a real PITA. Good luck.
Melting Slicks
Joined: Sep 2005
Posts: 2,670
Likes: 134
From: merritt island fl
C1 of Year Finalist (stock) 2019
2016 C1 of the Year Finalist
2015 C2 of the Year Finalist
The spec is the same for both the C5 and 6
1 - Tighten the used crankshaft balancer bolt to 330 N·m (240 lb ft).
2 - Remove used bolt and tighten the new crankshaft balancer bolt a first pass to 50 N·m (37 lb ft).
3 - Tighten the new crankshaft balancer bolt a second pass to 140 degrees
1 - Tighten the used crankshaft balancer bolt to 330 N·m (240 lb ft).
2 - Remove used bolt and tighten the new crankshaft balancer bolt a first pass to 50 N·m (37 lb ft).
3 - Tighten the new crankshaft balancer bolt a second pass to 140 degrees
