tunnel plate bolts - torque specs?
Thread Starter
Instructor
Joined: Feb 2007
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From: San Diego CA
tunnel plate bolts - torque specs?
Did a search for the torque specs on the tunnel plate bolts and only found 89 in/lbs?
Is this a typo for Ft/Lbs? and...89 seems pretty high and arbitrary.
Does anybody know the torque specs?
Thanks!
Is this a typo for Ft/Lbs? and...89 seems pretty high and arbitrary.
Does anybody know the torque specs?
Thanks!
Melting Slicks
Joined: Nov 2003
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From: Northern CA
Thread Starter
Instructor
Joined: Feb 2007
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From: San Diego CA
Le Mans Master
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The exact conversion is 12 inches= 1 foot.
So if you have 120 inch-pounds, divide by 12 to get foot-pounds...120 inch-pound=10 foot-pounds. Multiply torque in foot-pounds by 12 to get inch-pounds.
Also, foot/pounds means foot divided by pounds which is not the correct way of expressing torque. Torque is a force acting through a distance so if you have a 10 pound force pushing on a two foot bar, you multiply 10*2= 20 foot-pounds of torque.
So if you have 120 inch-pounds, divide by 12 to get foot-pounds...120 inch-pound=10 foot-pounds. Multiply torque in foot-pounds by 12 to get inch-pounds.
Also, foot/pounds means foot divided by pounds which is not the correct way of expressing torque. Torque is a force acting through a distance so if you have a 10 pound force pushing on a two foot bar, you multiply 10*2= 20 foot-pounds of torque.
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Thread Starter
Instructor
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From: San Diego CA
Drifting
Joined: Jun 2002
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From: Las Vegas Nevada
Just did my Tunnel Plate...
I just installed an Elite Engineering Tunnel Plate (1/4" with insulation (thermal abs)) at the same time as Corsa Sports and X pipe.
The 89 inch/pound or 7.4 foot/pounds seemed low to me initially. I used a Craftsman 3/8" short handled (12") torque wrench. I had a Craftsman long handled (18") torque wrench, but it didn't work below about 10 foot/pounds. The 12" long torque wrench (on sale for $69) worked fine at 89 inch/pounds.
I used an 8 mm socket with a 6" extension. The 89 inch/pounds ended up feeling about right for the size of the bolts.
One thing I did find - when I put the car back on the lift a week later to re-torque the exhaust bolts; all of the tunnel plate bolts needed about a 1/4th turn to get back to 89 inch/pounds. Maybe due in part to the thermal insulation, but I would suggest that you check the torque of your tunnel plate a week or two after install (easy to do even with the x-pipe in-place).
Cheers - Jim
The 89 inch/pound or 7.4 foot/pounds seemed low to me initially. I used a Craftsman 3/8" short handled (12") torque wrench. I had a Craftsman long handled (18") torque wrench, but it didn't work below about 10 foot/pounds. The 12" long torque wrench (on sale for $69) worked fine at 89 inch/pounds.
I used an 8 mm socket with a 6" extension. The 89 inch/pounds ended up feeling about right for the size of the bolts.
One thing I did find - when I put the car back on the lift a week later to re-torque the exhaust bolts; all of the tunnel plate bolts needed about a 1/4th turn to get back to 89 inch/pounds. Maybe due in part to the thermal insulation, but I would suggest that you check the torque of your tunnel plate a week or two after install (easy to do even with the x-pipe in-place).
Cheers - Jim
