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I think I am in over my head so to speak, and that may be a simple task
but I don=E2=80=99t want To foul up my engine rebuild. Rather then put=
my
untrained finger on the valve train, can I just pop off the distributor
cap and see if it=E2=80=99s pointing At number two to see if it is at its =
lowest
point of travel?
On Sat, Sep 22, 2018 at 6:26 AM Randall <tr3driver@ca.rr.com> wrote:
> > Several of you told me there might be a danger in simply
> > removing this pushrod as it may create a kinda "suction"
> > effect, and if I am not careful when removing it, it may
> > 'pull' up it's tappet riding on the cam causing it to fall
> > into the engine. However, I do need to pull out the pushrod
> > to make sure it's not bent. IS THERE ANY SPOT ON THE
> > ENGINE'S ROTATION WHERE THE TAPPET FALLING OUT IS LESS LIKELY
> > TO OCCUR?
>
> The tappet won't fall "into the engine", it remains right there in the op=
en
> space above the bore where it belongs. Not a calamity, it just means you
> have to remove the head in order to put the tappet back in place.
>
> It's slightly less likely to pull out if you turn the engine so the tappe=
t
> is at it's lowest point of travel (where the valve would be fully closed)=
.
> You can get this by turning the crankshaft until both valves are open on
> the
> opposite cylinder (in the firing order). (If the rocker shaft is off, re=
st
> a finger on top of each of the opposite cylinder pushrods, so you can fee=
l
> when they are both moving. The tappet/pushrod combo may or may not fall
> down
> of it's own weight, light finger pressure will ensure they go down.)
>
> But the lifter can still pull up, so you still need to lift the pushrod a
> small amount and spin it until the bottom comes free. When it's free, th=
e
> bottom will move around slightly and rattle against the sides of the
> lifter;
> that means it's safe to pull it out. The difference in weight is also ve=
ry
> noticeable, but I don't supposed you have a spare pushrod to compare it
> with.
>
> -- Randall
>
>
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<div><div dir=3D"auto">=C2=A0I think =C2=A0 I am in over my head so to spea=
k, and that may be a simple task but I =C2=A0don=E2=80=99t want =C2=A0To fo=
ul up my engine rebuild. =C2=A0 =C2=A0Rather then put my untrained =C2=A0fi=
nger =C2=A0on the valve =C2=A0train, can I just pop off the distributor cap=
and see if it=E2=80=99s pointing At number two =C2=A0to see if it is at it=
s lowest point of travel?=C2=A0</div></div><div><br><div class=3D"gmail_quo=
te"><div dir=3D"ltr">On Sat, Sep 22, 2018 at 6:26 AM Randall <<a href=3D=
"mailto:tr3driver@ca.rr.com";>tr3driver@ca.rr.com</a>> wrote:<br></div><b=
lockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px =
#ccc solid;padding-left:1ex">>=C2=A0 =C2=A0Several of you told me there =
might be a danger in simply <br>
> removing this pushrod as it may create a kinda "suction" <br=
>
> effect, and if I am not careful when removing it, it may <br>
> 'pull' up it's tappet riding on the cam causing it to fall=
<br>
> into the engine.=C2=A0 However,=C2=A0 I do need to pull out the pushro=
d <br>
> to make sure it's not bent.=C2=A0 IS THERE ANY SPOT ON THE <br>
> ENGINE'S ROTATION WHERE THE TAPPET FALLING OUT IS LESS LIKELY <br>
> TO OCCUR?<br>
<br>
The tappet won't fall "into the engine", it remains right the=
re in the open<br>
space above the bore where it belongs.=C2=A0 Not a calamity, it just means =
you<br>
have to remove the head in order to put the tappet back in place.<br>
<br>
It's slightly less likely to pull out if you turn the engine so the tap=
pet<br>
is at it's lowest point of travel (where the valve would be fully close=
d).<br>
You can get this by turning the crankshaft until both valves are open on th=
e<br>
opposite cylinder (in the firing order).=C2=A0 (If the rocker shaft is off,=
rest<br>
a finger on top of each of the opposite cylinder pushrods, so you can feel<=
br>
when they are both moving. The tappet/pushrod combo may or may not fall dow=
n<br>
of it's own weight, light finger pressure will ensure they go down.)<br=
>
<br>
But the lifter can still pull up, so you still need to lift the pushrod a<b=
r>
small amount and spin it until the bottom comes free.=C2=A0 When it's f=
ree, the<br>
bottom will move around slightly and rattle against the sides of the lifter=
;<br>
that means it's safe to pull it out.=C2=A0 The difference in weight is =
also very<br>
noticeable, but I don't supposed you have a spare pushrod to compare it=
<br>
with.<br>
<br>
-- Randall=C2=A0 <br>
<br>
</blockquote></div></div>
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