PNW Riders

SatansPetFerret · 06-11-2009, 02:06 PM

Hoping a mechanic might have this in a Honda book, or someone else has an old manual for the 83-85 Nighthawk 550/650's...

Can anyone tell me what torque should be on the bolts for the cylinder head cover for an 83 Nighthawk 550? My new head gasket is showing up tomorrow, and I cannot find the manual online... I can get it off Amazon for ~$30, but thought I would ask around first.

Eugene · 06-11-2009, 03:46 PM

http://cosky0.tripod.com/

Enjoy!

ApexHack · 06-11-2009, 06:29 PM

6 - 9 ft-lb (72 - 108 in-lb) isn't much. I wouldn't be using a torque wrench unless you have a 1/4" or 3/8" drive in-lb version. You don't want to strip those.

SatansPetFerret · 06-11-2009, 09:23 PM

Originally Posted by Eugene

http://cosky0.tripod.com/

Enjoy!

Thanks, but that looks to be a manual for a 1980 Nighthawk 650. I would assume the info is the same, except that they changed to a DOHC engine in 1983 for all the versions of the Nighthawk. Not sure how much they have in common.

Edit: I figured it wouldn't be a lot of torque, but figured I should see if anyone had a better answer than my "turn til tight plus 1/4 turn" torque level.

Jakobi · 06-12-2009, 07:42 AM

Originally Posted by ApexHack

6 - 9 ft-lb (72 - 108 in-lb) isn't much. I wouldn't be using a torque wrench unless you have a 1/4" or 3/8" drive in-lb version. You don't want to strip those.

Dude, that's for the head cover. The cylinder head torque values are 17-22 ft-lbs for 8mm bolts and 7-10 ft-lbs for 6mm bolts. Size refers to the thread size not the head of the bolt.

IMHO you would be better off trying to find the correct manual. Keep digging as I'm sure it's out there somewhere. I've found that forums specific to certain bikes will have a link somewhere to the manuals. That's how I got manuals for my CX and VF.

-Jake

Rippn · 06-13-2009, 10:43 PM

I'll bet theres a torque sequence(pattern) too... it would be best not to wing it...
FREE and clean, Ripp'n


06-11-2009, 02:06 PM	#1
SatansPetFerret Superbiker Joined: Mar 2007 From: Oly Blog Entries: 4 I Ride: 83 Nighthawk CB550 SC	83 Nighthawk 550/650 torque spec on cyl head cover Hoping a mechanic might have this in a Honda book, or someone else has an old manual for the 83-85 Nighthawk 550/650's... Can anyone tell me what torque should be on the bolts for the cylinder head cover for an 83 Nighthawk 550? My new head gasket is showing up tomorrow, and I cannot find the manual online... I can get it off Amazon for ~$30, but thought I would ask around first. __________________ Follow PNW Riders on Facebook and Twitter


06-11-2009, 03:46 PM	#2
Eugene Streetfighter Joined: Oct 2008 From: EUGENE IS JUST MY NAME; I LIVE IN PORTLAND I Ride: 2002 CRB600 F4i	http://cosky0.tripod.com/ Enjoy! __________________ Follow PNW Riders on Facebook and Twitter


06-11-2009, 06:29 PM	#3
ApexHack WMRRA Qualifier Joined: Jun 2007 From: Seattle I Ride: YZF750, 1000RR	6 - 9 ft-lb (72 - 108 in-lb) isn't much. I wouldn't be using a torque wrench unless you have a 1/4" or 3/8" drive in-lb version. You don't want to strip those. __________________ Follow PNW Riders on Facebook and Twitter


06-13-2009, 10:43 PM	#6
Rippn MotoGP Champion Joined: Apr 2007 From: soap lake wa. I Ride: 00kaw12r, 97 tls1000, 96gsxr1260 turbo freakshow, kz1300gt, 88gsxr1100, 86gsxr750, 82gsx1100ez, 79kz1300, 75 ducati750gts, 72 gt550 cafe	I'll bet theres a torque sequence(pattern) too... it would be best not to wing it... FREE and clean, Ripp'n __________________ Follow PNW Riders on Facebook and Twitter

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