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Author Topic: engine cover bolt torque specs???  (Read 5030 times)

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Offline mk1K6

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engine cover bolt torque specs???
« on: May 26, 2015, 07:40:25 PM »
So I can't seem to find in any of the manuals I have, what the proper torque specs are for any of the clutch cover, shifter cover, alternator cover ect.
any help would be great!
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: engine cover bolt torque specs???
« Reply #1 on: May 26, 2015, 08:56:37 PM »
6mm are usually around 7 ft lb.
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Offline ekpent

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Re: engine cover bolt torque specs???
« Reply #2 on: May 27, 2015, 03:41:05 AM »
Tight enough to seal the gasket. Are you using allen head or stock philips head ?  I tighten them by hand with a hand held impact driver than a small tap to finish. Nothing too radical.
« Last Edit: May 27, 2015, 04:00:09 AM by ekpent »
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Offline PeWe

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Re: engine cover bolt torque specs???
« Reply #3 on: May 27, 2015, 03:52:08 AM »
I have got too many thread failures so I torqued 10Nm (7.4 ft lbs). All M6 bolts/nuts keeping cam and towers. I torqued 12Nm earlier (8.885 ft lbs). I'll check next time I open the valve cover.
I'm sure side covers can get less, tighten more if leak.
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CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
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http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
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http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Bowswell

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Re: engine cover bolt torque specs???
« Reply #4 on: May 27, 2015, 05:19:50 AM »
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Offline RevDoc

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Re: engine cover bolt torque specs???
« Reply #5 on: May 27, 2015, 06:03:13 AM »
Quote from: calj737 on May 27, 2015, 05:23:43 AM
6-8# is the most you can apply, but you don't need to use a torque wrench. They should only be hand tight, just enough to "snug" them up. If your wrench is not calibrated, or cheap, you will shear the bolts/screws off.

Or find the threads stripped in the case as happened with a '97 Honda Magna that recently came into a friend's repair shop. Bottom 3 bolts on the clutch cover leaking oil all over the place.Some jackass apparently slammed them in with an air gun. Loctite Thread Repair to the rescue! Great product.
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: engine cover bolt torque specs???
« Reply #6 on: May 27, 2015, 12:16:21 PM »
How about this - no more than 1 hand on a 3/8" wrench.
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline ekpent

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Re: engine cover bolt torque specs???
« Reply #7 on: May 27, 2015, 05:57:39 PM »
Quote from: Jerry Rxman Griffin aka MuthaF'er on May 27, 2015, 12:16:21 PM
How about this - no more than 1 hand on a 3/8" wrench.
Sounds kind of sexy Jerry-------------Two might be better   ;D
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Offline mk1K6

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Re: engine cover bolt torque specs???
« Reply #8 on: May 28, 2015, 06:50:36 PM »
Awesome!! thanks for the help.  The PDF is very helpful. 
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