Torquing tension bolts
#1
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Blood, Sweat and Rotors
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From: California
Torquing tension bolts
Rebuilding motor, got to torquing the tension bolts. I did a criss cross pattern 4 step process:
1. With socket wrench torque until bolt head just touches rear plate and resistance is felt
2. 10 ft lb
3. 20 ft lb
4. 27 ft lb
Afterwards I went back and checked the torque on all the bolts. Bolts #1-14 were all below 27 ft lbs. Bolts 1-4 were about 20 ft lbs. I was suprised at how far off they were, I have a good torque wrench. As I progressed thru the bolts, they were progressively got closer to the spec of 27 ft lbs. Bolts 15-18 were spot on at 27.
So I retorqued all of them to 27 ft lbs and checked it twice. Does this sound right? I did hear a few more of the 2 piece apex seals *clink* after retorquing everything.
1. With socket wrench torque until bolt head just touches rear plate and resistance is felt
2. 10 ft lb
3. 20 ft lb
4. 27 ft lb
Afterwards I went back and checked the torque on all the bolts. Bolts #1-14 were all below 27 ft lbs. Bolts 1-4 were about 20 ft lbs. I was suprised at how far off they were, I have a good torque wrench. As I progressed thru the bolts, they were progressively got closer to the spec of 27 ft lbs. Bolts 15-18 were spot on at 27.
So I retorqued all of them to 27 ft lbs and checked it twice. Does this sound right? I did hear a few more of the 2 piece apex seals *clink* after retorquing everything.
#2
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From: https://www2.mazda.com/en/100th/
works for me.
i havent had any trouble (that i know of) by torquing the engine like that.
the last few i actually have done the last couple steps twice, like the 20ftlbs step, i'll torque everything, and then retorque it, just because of what you noticed.
i havent had any trouble (that i know of) by torquing the engine like that.
the last few i actually have done the last couple steps twice, like the 20ftlbs step, i'll torque everything, and then retorque it, just because of what you noticed.
#4
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Blood, Sweat and Rotors
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From: California
Thanks guys. Shop manual says to do a 3 step process but doesn't say to go back and check the torque of all bolts after step 3. I thought it just makes sense to do so since the final torque setting is irrespective of the order they're wrenched on. I did do the shop manual prescribed order (1-18) of course.
Motor makes great compression too.
Motor makes great compression too.
#5
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From: https://www2.mazda.com/en/100th/
Thanks guys. Shop manual says to do a 3 step process but doesn't say to go back and check the torque of all bolts after step 3. I thought it just makes sense to do so since the final torque setting is irrespective of the order they're wrenched on. I did do the shop manual prescribed order (1-18) of course.
Motor makes great compression too.
Motor makes great compression too.
yeah the FSM doesn't say to go back, but its round like a wheel, and we do those twice?
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