Big end cap torque??? - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Little Dragon · 28th June 2005, 04:47 PM

Hi there...
I'm in the middle of rebuilding my GTR engine I'm just about to check the oil clearances on the main bearing journals and the big end pins, so I can order the correct bearings. Obviously I need to torque down the bearing caps, I've had a look at the manual and the main bearing cap bolts should be torqued to 34-38 ft/lb, but for the big end cap bolts the manual says first torque to 12 ft/lb and then 60-65 degrees on an angle wrench, here lies the problem, I don't have an angle wrench, what is the equivilent torque value to 60-65 degrees???

Thanks
Jason

paul cawson · 28th June 2005, 05:42 PM

There is no equivilent as it depends on how much the bolts stretch. A gauge is the only way to do up the bolts. Make sure you paint mark the nuts with a dot at 12 oclock after using the Torque wrench, and before you use the Angle gauge as you cannot make a Second pass if you think you may have missed One.

tonysoprano · 28th June 2005, 06:48 PM

I was at school 60 degrees equals one flat of the nut.ie mark the corner of the nut onto the flat area of the rod and tighten the previous corner to that point.Wallah 60 degrees.

Tony

OzzieGTR · 29th June 2005, 10:55 AM

Factory setting is 40lbs but i always use 60lbs.

28th June 2005, 04:47 PM	#1 (permalink)
Little Dragon GTR Register Member Join Date: Apr 2004 Location: East Yorks Posts: 228	Big end cap torque??? Hi there... I'm in the middle of rebuilding my GTR engine I'm just about to check the oil clearances on the main bearing journals and the big end pins, so I can order the correct bearings. Obviously I need to torque down the bearing caps, I've had a look at the manual and the main bearing cap bolts should be torqued to 34-38 ft/lb, but for the big end cap bolts the manual says first torque to 12 ft/lb and then 60-65 degrees on an angle wrench, here lies the problem, I don't have an angle wrench, what is the equivilent torque value to 60-65 degrees??? Thanks Jason

28th June 2005, 06:48 PM	#3 (permalink)
tonysoprano GTR Register Member Join Date: Nov 2003 Location: surrey Posts: 341	When I was at school 60 degrees equals one flat of the nut.ie mark the corner of the nut onto the flat area of the rod and tighten the previous corner to that point.Wallah 60 degrees. Tony

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28th June 2005, 05:42 PM	#2 (permalink)
paul cawson New Users Join Date: Jul 2003 Location: Essex Posts: 2,098	There is no equivilent as it depends on how much the bolts stretch. A gauge is the only way to do up the bolts. Make sure you paint mark the nuts with a dot at 12 oclock after using the Torque wrench, and before you use the Angle gauge as you cannot make a Second pass if you think you may have missed One.

29th June 2005, 10:55 AM	#4 (permalink)
OzzieGTR GTR Register Member Join Date: Mar 2005 Location: Australia Posts: 41	Factory setting is 40lbs but i always use 60lbs.