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What a concept - A Girl Bringing Back Her 1966 Super Hawk

Want to keep a Restoration Log? Post it here! You can include photos. Suggested format: One Restoration per Thread; then keep adding your updates to the same thread...
rrietman
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Location: bellingham wa.

Post by rrietman » Sun Mar 24, 2013 11:29 pm

yes they go on tight. I assume you don't have the chain tensioner installed, or the valve adjuster screws. so get it hooked up, spin the crank over a few times to check yourself, tension the chain, adjust the valves, check everything again and you are good to go.
Good luck
Randy

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sarals
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Location: Monterey Peninsula, California

Post by sarals » Mon Mar 25, 2013 12:19 am

rrietman wrote:yes they go on tight. I assume you don't have the chain tensioner installed, or the valve adjuster screws. so get it hooked up, spin the crank over a few times to check yourself, tension the chain, adjust the valves, check everything again and you are good to go.
Good luck
Randy
Hi, Randy! You assume correctly, the chain tensioner is sitting in a box, it's not on the barrel. I haven't checked the adjuster screws. The head was just refurbished by LM, and I left things the way I received it. I expect the chain to be tight, but I also think it's not routed quite right or it's slightly bunched up, as in around the guide roller. I also have to "skip" it on a few teeth on the crank so that the master link is at the top center of the cam; it's not, right now. All of this I will do tomorrow.

Thanks for the kind words, and the vote of confidence!
1965 CB77 305 Super Hawk
1989 NT650 Hawk GT
1981 Yamaha XJ550 Seca

LOUD MOUSE
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Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Mon Mar 25, 2013 6:44 am

Block up the engine so the cylinders are vertical.
This will help with getting the chain on the lower sprocket easier.
Put nuts on the 2 studs under the spark plugs and tighten them.
This will help the gasket to compress and give a small amount of slack to the chain. ......lm
sarals wrote:
rrietman wrote:yes they go on tight. I assume you don't have the chain tensioner installed, or the valve adjuster screws. so get it hooked up, spin the crank over a few times to check yourself, tension the chain, adjust the valves, check everything again and you are good to go.
Good luck
Randy
Hi, Randy! You assume correctly, the chain tensioner is sitting in a box, it's not on the barrel. I haven't checked the adjuster screws. The head was just refurbished by LM, and I left things the way I received it. I expect the chain to be tight, but I also think it's not routed quite right or it's slightly bunched up, as in around the guide roller. I also have to "skip" it on a few teeth on the crank so that the master link is at the top center of the cam; it's not, right now. All of this I will do tomorrow.

Thanks for the kind words, and the vote of confidence!

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sarals
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Posts: 1014
Joined: Mon Jun 25, 2012 9:19 pm
Location: Monterey Peninsula, California

Post by sarals » Mon Mar 25, 2013 9:30 am

Ed, there you are thinking again....

Thank you, I will do that. It's getting tiring flipping that heavy engine up on it's rear mounts to futz with that chain. I just know, the way my luck has been running, that the thing will fall off of the counter. I need that to happen.

Okay, I'll go to spin class, do some yoga, get my mind relaxed, and then go out to the garage and try again.

Zen and the Art of Motorcycle Maintenance.
LOUD MOUSE wrote:Block up the engine so the cylinders are vertical.
This will help with getting the chain on the lower sprocket easier.
Put nuts on the 2 studs under the spark plugs and tighten them.
This will help the gasket to compress and give a small amount of slack to the chain. ......lm
sarals wrote:
rrietman wrote:yes they go on tight. I assume you don't have the chain tensioner installed, or the valve adjuster screws. so get it hooked up, spin the crank over a few times to check yourself, tension the chain, adjust the valves, check everything again and you are good to go.
Good luck
Randy
Hi, Randy! You assume correctly, the chain tensioner is sitting in a box, it's not on the barrel. I haven't checked the adjuster screws. The head was just refurbished by LM, and I left things the way I received it. I expect the chain to be tight, but I also think it's not routed quite right or it's slightly bunched up, as in around the guide roller. I also have to "skip" it on a few teeth on the crank so that the master link is at the top center of the cam; it's not, right now. All of this I will do tomorrow.

Thanks for the kind words, and the vote of confidence!
1965 CB77 305 Super Hawk
1989 NT650 Hawk GT
1981 Yamaha XJ550 Seca

User avatar
sarals
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Posts: 1014
Joined: Mon Jun 25, 2012 9:19 pm
Location: Monterey Peninsula, California

Post by sarals » Wed Mar 27, 2013 12:27 pm

I had a "day of interruption", but I was able to spend some "quality time" with the engine yesterday afternoon. The chain is installed, connected. I installed the master link directly over the cam timing mark. Now, here's the odd part - when I rotated the engine through after getting the chain sorted, the master link ended up in a different place. One more revolution, and it had advanced even further - about a tooth per revolution. The timing marks still line up. And, when the crank gets to TDC, the barrel wants to lift up from the case ever so slightly and there is a metallic "tink" each time it does it. That cam chain moving and that noise don't seem right to me....

Image

Image

Crank and cam timing marks lining up.

Image

Master link clip in place - direction of rotation is to the left.

Image
Last edited by sarals on Sat Nov 08, 2014 11:14 pm, edited 1 time in total.
1965 CB77 305 Super Hawk
1989 NT650 Hawk GT
1981 Yamaha XJ550 Seca

LOUD MOUSE
honda305.com Member
Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Post by LOUD MOUSE » Wed Mar 27, 2013 12:32 pm

You did good.
Now you can install all the other parts and set the valve clearance.
The link location changes because the 2 sprockets are not the same size/number of teeth. .......lm
sarals wrote:I had a "day of interruption", but I was able to spend some "quality time" with the engine yesterday afternoon. The chain is installed, connected. I installed the master link directly over the cam timing mark. Now, here's the odd part - when I rotated the engine through after getting the chain sorted, the master link ended up in a different place. One more revolution, and it had advanced even further - about a tooth per revolution. The timing marks still line up. And, when the crank gets to TDC, the barrel wants to lift up from the case ever so slightly and there is a metallic "tink" each time it does it. That cam chain moving and that noise don't seem right to me....

Image

Image

Crank and cam timing marks lining up.

Image

Master link clip in place - direction of rotation is to the left.

Image

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sarals
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Posts: 1014
Joined: Mon Jun 25, 2012 9:19 pm
Location: Monterey Peninsula, California

Post by sarals » Wed Mar 27, 2013 1:07 pm

Okay, Ed! I know the sprockets are different sizes (the cam turns at half the crank RPM), but after all of these years it never occurred to me that the chain would advance teeth per revolution. It makes sense, I guess!

Question - as the crank goes over TDC should there be resistance and that metallic "tink"? I assume that the noise will disappear after the head is torqued down?

Thank you, thank you!
1965 CB77 305 Super Hawk
1989 NT650 Hawk GT
1981 Yamaha XJ550 Seca

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