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1995 XV1100 Valve stem not aligned with rocker arm [SOLVED]

Posted: Wed Jan 08, 2020 3:51 am
by jmindes
Trying to do a valve adjustment on the intake valve of the front cylinder. I am finding that the rocker arm and the valve stem are not aligned. The rocker arm is slightly in front of the valve stem such that even if you take the adjusting screw all the way out there is no room to get even the smallest feeler gauge between the rocker arm and the valve stem. This is because the valve stem touches the back part of the rocker arm and not the flat spot where it should. Was able to adjust all three other valves just not this one. Is there a way to re-align the valve stem or the rocker arm so they sit above each other correctly?

Re: 1995 XV1100 Valve stem not aligned with rocker arm [SOLVED]

Posted: Wed Jan 08, 2020 4:26 pm
by ViragoJoe
jmindes wrote:
Wed Jan 08, 2020 3:51 am
Trying to do a valve adjustment on the intake valve of the front cylinder. I am finding that the rocker arm and the valve stem are not aligned. The rocker arm is slightly in front of the valve stem such that even if you take the adjusting screw all the way out there is no room to get even the smallest feeler gauge between the rocker arm and the valve stem. This is because the valve stem touches the back part of the rocker arm and not the flat spot where it should. Was able to adjust all three other valves just not this one. Is there a way to re-align the valve stem or the rocker arm so they sit above each other correctly?
Not knowing the history of this engine and if it has ever been taken apart. One can only assume that it is the correct Rocker Arm and Intake Valve.

A picture from you would have helped us understand this better.

However, if the Rocker Arm Adjustment Screw doesn't line up with the Valve Stem as it does in the picture below. Then you have a problem. I'm assuming you are following your repair manual for your bike as you do these valve adjustments.

We can only assume something major has happened to cause this misalignment and there is no adjustment that can be made to get them to line up as they should. The Rocker Arm will not bend. it would break (snap) first. However, Valve stems can bend, due to being hit by the piston if the intake valve were in an open position as the piston reaches top dead center, due to timing being off on the front Cylinder. This is only my best guess and may require more diagnostic work by checking timing and/or disassembly of the engine to determine what happened. If it is indeed a bent valve stem. The valve would have to be replaced.

The easiest thing to check at this point would be the timing of the front cylinder (check both cylinders to be thorough):

Watch this Video on timing:
https://www.youtube.com/watch?v=GyiRR_BCJyk

Click Image to Enlarge:
XV1100 Front Cyl Intake Valve and Rocker Arm.jpg

Re: 1995 XV1100 Valve stem not aligned with rocker arm [SOLVED]

Posted: Thu Jan 09, 2020 10:10 pm
by jmindes
valve pic.JPG
Thanks for the input. I am following the manual for valve adjustment. The problem is that no matter how far I back out the adjustment screw I can't get a feeler gauge of any thickness in between the valve stem and the rocker arm. This is because the rocker arm is angled up from back to front and the back part of the rocker arm where the adjustment screw daylights at the bottom touches the valve stem.

Perhaps I am not at top dead center even though I have aligned the marks on the crankcase per the manual. Don't know what else to do,

Re: 1995 XV1100 Valve stem not aligned with rocker arm [SOLVED]

Posted: Fri Jan 10, 2020 2:02 am
by ViragoJoe
"Perhaps I am not at top dead center even though I have aligned the marks on the crankcase per the manual. Don't know what else to do,"


Your adjuster and valve stem look to be perfectly lined up on the intake valve of the front cylinder. It looks like you still have tension on that adjuster.

Did you look at this Video regarding timing?:

https://www.youtube.com/watch?v=GyiRR_BCJyk

This is about the only thing it can be that would keep tension on the tappet adjuster. Is the exhaust side rocker free (loose) where it can be adjusted? Or does it too have tension on it?

Try rotating the crankshaft one more revolution clock wise to the "I" (eye) mark on the fly wheel and see if it loosens up then, to be able to get a feeler gauge between the tappet adjuster.

added note: When the manual speaks of cylinder number (1) one. They are talking about the REAR cylinder not the front.

Just to clarify, timing marks "T" is for the REAR cylinder and "I" (eye) is for the front.

Adjusting Virago Valves:
https://www.viragohelp.com/virago-owner ... go-valves/

Let me know what you find out.

Re: 1995 XV1100 Valve stem not aligned with rocker arm [SOLVED]

Posted: Sat Jan 11, 2020 4:14 pm
by jmindes
I was able to get the right gap after all. Problem was that I was not at TDC. Watching the timing video on YouTube helped me understand the mechanics. Thanks for the link and suggestions.

Re: 1995 XV1100 Valve stem not aligned with rocker arm [SOLVED]

Posted: Sun Jan 12, 2020 5:33 am
by ViragoJoe
jmindes wrote:
Sat Jan 11, 2020 4:14 pm
I was able to get the right gap after all. Problem was that I was not at TDC. Watching the timing video on YouTube helped me understand the mechanics. Thanks for the link and suggestions.

Glad to hear you were able to work this out and get the valves adjusted on the front Cylinder.