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Steve=E2=80=94what!! These are pretty much standard pin rings, used in =
all motorcycles and most cars. I rarely saw an engine with snap rings =
until recently. You put these in by hand=E2=80=94push one end into the =
grove and roll the ring in. You can check to make sure they are seated =
by giving them a gentle shove with a flat blade screwdriver. To take =
them out, get a small screwdriver that fits into the slot at the bottom =
of the wrist pin hole (now you know what that slot is for), slip the =
blade under the ring and ease it out. I=E2=80=99ve never had one hit me =
in the eye, but I had one fly into my mouth once=E2=80=94so keep your =
mouth closed and wear safety glasses. They should be single use =
retainers, but mediocre mechanics everywhere reuse them if they took the =
piston off the conn rod for some reason but aren=E2=80=99t replacing it =
with a new piston (which comes with them). Best practice calls for =
positioning the ring so the opening is on top. Acceleration of the =
piston is vertical (of course) so a sideways opening could allow the =
ring to close a bit under acceleration and come loose. It probably =
hasn=E2=80=99t happened in the entire history of engines, but it=E2=80=99s=
pretty to think about.=20
I used to carry a few extras in my mechanics apron when I worked in a =
shop. If one of the other mechanics had pranked me (a common thing) I'd =
wait until he was putting the engine back in and drop one on his bench.=20=
Bill Babcock
Beach Bum
bill@ponostyle.com
https://www.Ponostyle.com
> On Jan 22, 2023, at 9:18 AM, Steve Yott via Fot <fot@autox.team.net> =
wrote:
>=20
> I have seen a ton of retaining rings in my life but those take the =
dumb cake. I would recommend measuring the needed size and order them =
from McMaster Carr. Even if you install those the next person will need =
to bugger up the pistons to get them out!
>=20
> Steve Yott
>=20
>=20
>=20
> Steve Yott
>=20
>=20
> -------- Original message --------
> From: Jack Wheeler via Fot <fot@autox.team.net>
> Date: 1/22/23 12:18 PM (GMT-06:00)
> To: FOT Triumph <fot@autox.team.net>
> Cc: "J.S. Zimmerman" <jzimme10@gmail.com>, Eva Golding =
<ken@davebean.com>
> Subject: [Fot] Snap Rings in Pistons
>=20
> I am trying to install the snap rings which hold the wrist (gudgeon?) =
pins in the pistons. The snap rings I have used on the TR-3/4 engines =
and most of the other engines I have rebuilt, have small holes in the =
ends. These allow you to insert snap ring pliers into the holes so you =
can squeeze the snap rings into place in the grooves in the piston =
bores.
>=20
> I am assembling a Ford 1600 CC engine for my Morgan and have bought =
new pistons. The snap rings that came with these pistons do not have =
the holes in the ends. See attached picture.
>=20
> These snap rings are very stiff and I can't squeeze them in by hand. =
I also can't figure out a way to grip them with the snap ring pliers I =
have. Does anyone know if there is a special tool I need to use to =
install these? Or any suggestions about how I should go about =
installing them? Thanks.
>=20
> Jack Wheeler
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive =
http://www.team.net/pipermail/fot
> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/bill@ponostyle.com
>=20
>=20
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" =
class=3D"">Steve=E2=80=94what!! These are pretty much standard pin =
rings, used in all motorcycles and most cars. I rarely saw an engine =
with snap rings until recently. You put these in by hand=E2=80=94push =
one end into the grove and roll the ring in. You can check to make sure =
they are seated by giving them a gentle shove with a flat blade =
screwdriver. To take them out, get a small screwdriver that fits into =
the slot at the bottom of the wrist pin hole (now you know what that =
slot is for), slip the blade under the ring and ease it out. I=E2=80=99ve =
never had one hit me in the eye, but I had one fly into my mouth =
once=E2=80=94so keep your mouth closed and wear safety glasses. They =
should be single use retainers, but mediocre mechanics everywhere reuse =
them if they took the piston off the conn rod for some reason but =
aren=E2=80=99t replacing it with a new piston (which comes with them). =
Best practice calls for positioning the ring so the opening is on top. =
Acceleration of the piston is vertical (of course) so a sideways opening =
could allow the ring to close a bit under acceleration and come loose. =
It probably hasn=E2=80=99t happened in the entire history of engines, =
but it=E2=80=99s pretty to think about. <div class=3D""><br =
class=3D""></div><div class=3D"">I used to carry a few extras in my =
mechanics apron when I worked in a shop. If one of the other mechanics =
had pranked me (a common thing) I'd wait until he was putting the engine =
back in and drop one on his bench. </div><div class=3D""><br =
class=3D""></div><div class=3D""><div class=3D""><div class=3D"">
<div><b class=3D"">Bill Babcock</b><br class=3D""><i class=3D"">Beach =
Bum</i><br class=3D""><a href=3D"mailto:bill@ponostyle.com"; =
class=3D"">bill@ponostyle.com</a><br =
class=3D"">https://www.Ponostyle.com<br class=3D""></div>
</div>
<div><br class=3D""><blockquote type=3D"cite" class=3D""><div =
class=3D"">On Jan 22, 2023, at 9:18 AM, Steve Yott via Fot <<a =
href=3D"mailto:fot@autox.team.net"; class=3D"">fot@autox.team.net</a>> =
wrote:</div><br class=3D"Apple-interchange-newline"><div class=3D""><meta =
http-equiv=3D"Content-Type" content=3D"text/html; charset=3DUTF-8" =
class=3D""><div dir=3D"auto" class=3D""><div dir=3D"auto" class=3D"">I =
have seen a ton of retaining rings in my life but those take the dumb =
cake. I would recommend measuring the needed size and order them =
from McMaster Carr. Even if you install those the next person will =
need to bugger up the pistons to get them out!</div><div dir=3D"auto" =
class=3D""><br class=3D""></div><div dir=3D"auto" class=3D"">Steve =
Yott</div><div dir=3D"auto" class=3D""><br class=3D""></div><div =
dir=3D"auto" class=3D""><br class=3D""></div><div dir=3D"auto" =
class=3D""><br class=3D""></div><div id=3D"composer_signature" =
dir=3D"auto" class=3D""><meta http-equiv=3D"Content-Type" =
content=3D"text/html; charset=3DUTF-8" class=3D""><div =
style=3D"font-size:85%;color:#575757" dir=3D"auto" class=3D"">Steve =
Yott</div></div><div dir=3D"auto" class=3D""><br class=3D""></div><div =
class=3D""><br class=3D""></div><div align=3D"left" dir=3D"auto" =
style=3D"font-size: 100%;" class=3D""><div class=3D"">-------- Original =
message --------</div><div class=3D"">From: Jack Wheeler via Fot <<a =
href=3D"mailto:fot@autox.team.net"; class=3D"">fot@autox.team.net</a>> =
</div><div class=3D"">Date: 1/22/23 12:18 PM (GMT-06:00) </div><div =
class=3D"">To: FOT Triumph <<a href=3D"mailto:fot@autox.team.net"; =
class=3D"">fot@autox.team.net</a>> </div><div class=3D"">Cc: "J.S. =
Zimmerman" <<a href=3D"mailto:jzimme10@gmail.com"; =
class=3D"">jzimme10@gmail.com</a>>, Eva Golding <<a =
href=3D"mailto:ken@davebean.com"; class=3D"">ken@davebean.com</a>> =
</div><div class=3D"">Subject: [Fot] Snap Rings in Pistons </div><div =
class=3D""><br class=3D""></div></div><div style=3D"font-family:Helvetica =
Neue, Helvetica, Arial, sans-serif;font-size:13px;" =
class=3D"yahoo-style-wrap"><div data-setdir=3D"false" dir=3D"ltr" =
class=3D"">I am trying to install the snap rings which hold the wrist =
(gudgeon?) pins in the pistons. The snap rings I have used on the =
TR-3/4 engines and most of the other engines I have rebuilt, have small =
holes in the ends. These allow you to insert snap ring pliers into =
the holes so you can squeeze the snap rings into place in the grooves in =
the piston bores.</div><div data-setdir=3D"false" dir=3D"ltr" =
class=3D""><br class=3D""></div><div data-setdir=3D"false" dir=3D"ltr" =
class=3D"">I am assembling a Ford 1600 CC engine for my Morgan and have =
bought new pistons. The snap rings that came with these pistons do =
not have the holes in the ends. See attached picture.</div><div =
data-setdir=3D"false" dir=3D"ltr" class=3D""><br class=3D""></div><div =
data-setdir=3D"false" dir=3D"ltr" class=3D"">These snap rings are very =
stiff and I can't squeeze them in by hand. I also can't figure out =
a way to grip them with the snap ring pliers I have. Does anyone =
know if there is a special tool I need to use to install these? Or =
any suggestions about how I should go about installing them? =
Thanks.</div><div data-setdir=3D"false" dir=3D"ltr" class=3D""><br =
class=3D""></div><div data-setdir=3D"false" dir=3D"ltr" class=3D"">Jack =
Wheeler<br =
class=3D""></div></div></div>_____________________________________________=
__<br class=3D""><a href=3D"mailto:fot@autox.team.net"; =
class=3D"">fot@autox.team.net</a><br class=3D""><br =
class=3D"">http://www.fot-racing.com<br class=3D""><br class=3D"">Donate: =
http://autox.team.net/archive http://www.team.net/pipermail/fot<br =
class=3D"">Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/bill@ponostyle.com<br =
class=3D""><br class=3D""><br class=3D""></div></blockquote></div><br =
class=3D""></div></div></body></html>=
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_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot
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