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Hey guys
I have the Top-end off from the engine.
Is it possible to do a valve-adjustment when its removed from the engine?
I have the Top-end off from the engine.
Is it possible to do a valve-adjustment when its removed from the engine?
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...Absolutely. -
I've wondered about that myself. Rotating the cam shafts without the chain... How do you do that?Comment
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It's not easy to do it off the engine.Ed
To measure is to know.
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Okay I got it, I'll make a jig to hold the head on a sawhorse. Then take a sprocket and crank from a bicycle and mount underneath on an axle. Then I'll wrap the chain around and use the pedals to rotate the cams slowly. I will put a bicycle seat on the sawhorse for comfort.
On second thought, maybe I'll spend that time and just reassemble the engine!Comment
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I'm kind of intrigued to see if it's possible now. Not the bicycle sprocket thing, I was just kidding around, but rotating the cams without damaging anything.
I bought a strap wrench which should work if there a spot to wrap it around the cam shafts. I'll try when I get home and see if it works.
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When you get done fooling around, just be sure to have the cam lobes in the proper positions when measuring your clearances.
Might also be a good time to take advantage of the offer in my signature.
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mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
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Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
(Click on my username in the upper-left corner for e-mail info.)Comment
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Well, the strap wrench was too wide to fit on the gs850 cam. If the wrench was 3/4" wide it may work, assuming it's strong enough!Comment
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I found a strap that works. It wraps around the sprocket on the cam shaft and rotates it with ease. The strap is like a serpentine belt material, tough stuff. It barely fits in the cam chain tunnel which gets narrow towards the bottom of the head, but it does fit. There is a cam chain guide held on by two bolts that I had to remove from the intake side to get the strap through. Found it at Lowes near the water softeners, item #148976 if you want to search online. Surely the timing will need to be adjusted and there's lots of other worms in this can though! I was planning on tearing down this head anyway but really wanted to be able to get the clearances within specs before putting it all back together.
Rockstone, I hope this helps with your project.Comment
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