Yep that was it! I should really try to do things myself before I post in here
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‘77 BS38 running way too lean
- Thread starter cjv2001
- Start date
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I should really try to do things myself before I post in here
Posting our Duh-oh's is part of the fun!
Oh will have plenty more to come. Planning to replace my push rod so stay tuned for that lol
Also see you're in Baraboo, I'm just south in Janesville
Going to the Slimy crud Sunday?
Sadly no
, just got the bike running and still need to make sure everything is able to go above 40 mph lol. Bike died on me today, negative battery terminal screw was loose and fell off luckily coming to a stoplight. Replaced and super snug now lol
Looking good, but you really need something on the forks, either a fender or fork brace of some sort. That single disc really puts a lot of twisting force on the forks when you brake.
Will do, I’ll put the front fender back on this week. Another question for ya, I am planning to retorque head bolts as per @gggGary and your recommendations. Read the other post but am a little mechanically challenged lol. When I do it, am I okay to remove all the bolts, and lube them at one time, and the follow the torque diagram? Or should I remove one at a time, lube, torque and then move on to the next one and repeat the process? Thanks
Ps Also will do 1/2 torque, 3/4 torque, and then full
torque pass. This way I am imagining taking all the bolts off and then doing it but just want to make sure. will be very careful with that 6mm to not over torque it as well.
Whatever you do, you must not remove all the head bolts. If you do that, 99% certain you will soon be pulling the engine out to fit new base and head gaskets.
Oh wow I had it all wrong good to know thanks!
This.
the inside 4 one at a time then the outside 4 one at a time. then the 2 under the spark plugs and the little 6mm bolt above the cam chain tensioner, a 10mm on a long 1/4" wobble extension lets you get at that one. careful hand tightening on 6mm what i do.
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The torque spec is for clean, dry threads. Lubrication will increase the applied torque quite a bit.
I think I saw 30-35 ft lb. Does that sound correct for lubed threads?
I don’t have that info available at the moment.
Keep it down in the 28-30lbs range? I use copper antiseize a lot on MC threads subject to seizing. (I'm talking to you sparkplugs)
No need to slather, a little dab will do you.
No need to slather, a little dab will do you.
I'm pretty sure the torque spec is for lubed fasteners. The newer manuals don't mention it but the '75 and older ones specifically do, at least for the 8 big studs .....
And here's a diagram showing the torque specs and tightening sequence. Like Gary, I use copper anti-seize. In fact I use it all over the bike, on pretty much every fastener except internal ones. I used to go up to about 35lbs max on the large studs but have revised my thinking on that. When I tried it to try and fix a leak, I swear I could feel the studs stretching, lol, and it didn't cure the leak anyway. So now I do 30 lbs max, but usually start at 28 if there are no leaks .....
And here's a diagram showing the torque specs and tightening sequence. Like Gary, I use copper anti-seize. In fact I use it all over the bike, on pretty much every fastener except internal ones. I used to go up to about 35lbs max on the large studs but have revised my thinking on that. When I tried it to try and fix a leak, I swear I could feel the studs stretching, lol, and it didn't cure the leak anyway. So now I do 30 lbs max, but usually start at 28 if there are no leaks .....
That’s a heck of a thing to leave out of the service manual!
I come from aviation, so I’m quite s fussy about stuff like that.
I'd also like to mention that many of us change the rubber/metal washers on the outside 4 studs to copper or brass. Those studs flow oil so need a sealing washer of some sort. The rubber washers do seal but are too soft to hold the nuts tight. They constantly loosen up and head gaskets leaks are often the result. The copper or brass replacements are hard enough to hold the nuts tight but soft enough to seal .....
AUTOMAN
XS650 Addict
will increase applied LOAD quite a bit with SAME torque
Thank you. Do you know what size these are and if they are available at somewhere like ACE? Shiny engine ya got there hoping to get to that point next week
