[TR] stuck valve

[Paul Tegler]

?? can you rotate the crank knowing the piston in question can go to, 
and past TDC without touching the stuck valve?

If you can not rotate the engine and pop that valve back up.... before 
pulling the head, pull the intake exhaust manifolds (half way to pulling 
the head) look down in the exhuast port and see if the valve has a ton 
of crap on it.  Stuck down, you should see shiny metal of the valve that 
rides in the guide if the valve is open.... might be able to see if it's 
scored from being tight in the guide.

If it stuck down and the piston even slightly tapped the valve, chances 
are its bent!   :-(

ptegler


On 11/18/2018 4:05 PM, Jeff Scarbrough wrote:
> Paul stopped by this afternoon, and showed me this picture.  If it was 
> mine, given that it hadn't run in two years and had been drained of 
> oil for six months, I'd spray some rust-penetrating spray all up in 
> there, and let it soak for a day or so.  Then, I'd tap the valve with 
> a small hammer to see if I had any "bounce"...  Then, if it was still 
> stuck down, I'd probably try The Other Rope Trick:  Put the piston at 
> BDC, run some 3/8" nylon rope in the cylinder (leave an end hanging 
> out!), then gently rotate toward TDC and see if it would move it 
> without too much force.  If it still doesn't move, then the head has 
> to come off.
>
> If it were mine, that's what I would do....
>
> Jeff Scarbrough
> Corrosion Acres, Ga.
>
> On Sat, Nov 17, 2018 at 10:22 PM Paul Dorsey <dorpaul1 at gmail.com 
> <mailto:dorpaul1 at gmail.com>> wrote:
>
>     I am a novice.  I have been asking questions about my pushrod,
>     rocker arm, etc. without realizing the problem was probably the
>     exhaust valve being stuck open the whole time. (as shown in the
>     picture below).  What causes an exhaust valve to get stuck open?
>     How do I fix it? This engine rebuild is relatively recent.
>
>     Hope I don't bombard the list, Thanks, Paul Dorsey  60 TR3
>
>
>
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-- 
Paul Tegler
ptegler at verizon.net  www.teglerizer.com

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