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73 Rt3 head torque specs

  • Brucher
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73 Rt3 head torque specs was created by Brucher

Looking for 73 rt3 head torque. Thanks
12 Apr 2021 14:36 #1

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Replied by Andy L on topic 73 Rt3 head torque specs

Hi Brucher, the owners manual available in the Technical section of this forum gives figures of 15-18 ft/lbs (see page 54). It also details the two stage tightening process and the criss-cross pattern to follow when tightening the head down. Hope this helps. Andy.
12 Apr 2021 15:46 #2

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Replied by RT325 on topic 73 Rt3 head torque specs

Are you talking & torquing about 'all' the bolts & nuts as 4 small & 4 big--big through bolts or call them deep nuts. Think i go to about 20 on the small & 40 on the big. I tend to overtighten everything though lol, but never come loose.
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12 Apr 2021 17:16 #3

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  • Gr8uncleal
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Replied by Gr8uncleal on topic 73 Rt3 head torque specs

I think the "big and small" came in with the '74 bikes. 
Last edit: 12 Apr 2021 23:57 by Gr8uncleal.
12 Apr 2021 23:56 #4

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Replied by RT325 on topic 73 Rt3 head torque specs

No, big & small came in with RT1 in "70 & carried through to "73. Maybe ya thinking of the ones down in the fins on those later ones. Early models have 17mm hex sleeve nut going down through the fins holding head & cylinder down along with 4 smaller nuts on 8mm studs.
www.partzilla.com/catalog/yamaha/motorcy...1/cylinder-crankcase
13 Apr 2021 00:20 #5

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Replied by RT325 on topic 73 Rt3 head torque specs

 
13 Apr 2021 00:22 #6

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Replied by Gr8uncleal on topic 73 Rt3 head torque specs

Yes, I was!
13 Apr 2021 00:26 #7

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Replied by RT325 on topic 73 Rt3 head torque specs

All good & have a good day.
13 Apr 2021 00:39 #8

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