Re: [Fot] abradable coatings

[Bob Kramer via Fot <fot@autox.team.net>]

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I left out an important question.  We typically add extra clearance on #4.
With a proper coating the need may go away, but if the coating wears to fit=
.

I also wonder how it works with liners.  Even with using boring plates, I
suspect that the custom machined liners clamp down just a little bit
differently when we bolt on a head and the perfect bore we were after may
change. Nothing will change for the rings but the piston to bore clearance
may be perfect.

Bob Kramer


On Wed, Oct 6, 2021 at 10:26 AM Bob Kramer <rkramer56@gmail.com> wrote:

> Has anyone used this company on a wet liner engine like a TR4? I have a
> set of scuffed Wieseco pistons that could be rescued with a skirt coating
> and the company says it will work.
>
> The coatings can be applied very thick and sometimes provide an
> interference fit when a device is assembled. During initial operation, th=
e
> coating breaks in to form a perfect fit between mating parts. Controlled
> abrasion even accounts for thermal and torque related distortions in
> components as the coating wears in. Once the optimum fit is achieved,
> stresses on the coating are reduced and the break-in process stops.
> Durable, low friction, anti-scuff properties of the coating maintain
> tighter operating clearances and higher efficiency for the life of the
> device.
>
>
> https://www.line2linecoatings.com/
>
> Armor Clearance Control=E2=84=A2 (Armor CC=E2=84=A2)
> For building diametric thickness 0.002" to 0.020" - our hardest skirt
> coating.
>
>
>
>
>
> Extreme wear resistance provides lasting enlargement of piston skirt
> dimensions. Recommended for restoring clearances where they have opened u=
p
> from skirt collapse, wear, clean-up honing or other.
>
> Race proven durability in NHRA PRO-MOD. Coating can be topped with Slick
> CC=E2=84=A2 for the ultimate fit and lubricity.
>
> *Recommended for 2 strokes and 4 strokes.*
> ADVANTAGES:
>
>    - *Restores and Holds Clearances*
>
>
> Bob Kramer
>

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<div dir=3D"ltr">I left out an important question.=C2=A0 We typically add e=
xtra clearance on #4.=C2=A0 With a proper coating the need may go away, but=
 if the coating wears to fit.<div><br></div><div>I also wonder how it works=
=C2=A0with liners.=C2=A0 Even with using boring plates, I suspect that the =
custom machined liners clamp down just a little bit differently=C2=A0when w=
e bolt on a head and the perfect bore we were after may change. Nothing wil=
l change for the rings but the piston to bore clearance may be perfect.=C2=
=A0<br><div><br clear=3D"all"><div><div dir=3D"ltr" class=3D"gmail_signatur=
e" data-smartmail=3D"gmail_signature"><div dir=3D"ltr">Bob Kramer</div></di=
v></div><br></div></div></div><br><div class=3D"gmail_quote"><div dir=3D"lt=
r" class=3D"gmail_attr">On Wed, Oct 6, 2021 at 10:26 AM Bob Kramer &lt;<a h=
ref=3D"mailto:rkramer56@gmail.com";>rkramer56@gmail.com</a>&gt; wrote:<br></=
div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;bor=
der-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><div=
>Has anyone used this company on a wet liner engine like a TR4? I have a se=
t of scuffed Wieseco=C2=A0pistons that could be rescued with a skirt coatin=
g and the company says it will work.=C2=A0</div><div><span style=3D"backgro=
und-color:rgb(250,250,250);color:rgb(85,85,85);font-family:Helvetica,Arial;=
font-size:14px"><br></span></div><div><span style=3D"background-color:rgb(2=
50,250,250);color:rgb(85,85,85);font-family:Helvetica,Arial;font-size:14px"=
>The coatings can be applied very thick and sometimes provide an interferen=
ce fit when a device is assembled. During initial operation, the coating br=
eaks in to form a perfect fit between mating parts. Controlled abrasion eve=
n accounts for thermal and torque related distortions in components as the =
coating wears in. Once the optimum fit is achieved, stresses on the coating=
 are reduced and the break-in process stops. Durable, low friction, anti-sc=
uff properties of the coating maintain tighter operating clearances and hig=
her efficiency for the life of the device.</span></div><div><br></div><div>=
<br></div><div><a href=3D"https://www.line2linecoatings.com/"; target=3D"_bl=
ank">https://www.line2linecoatings.com/</a><br></div><div><br></div><div><h=
2 style=3D"margin:10px 0px;font-family:&quot;Droid Sans&quot;;line-height:4=
0px;color:rgb(64,64,64);font-size:22px">Armor Clearance Control=E2=84=A2 (A=
rmor CC=E2=84=A2)</h2><div style=3D"min-height:20px;padding:19px;margin-bot=
tom:20px;background:rgb(255,255,242);border:1px solid rgb(255,255,255);bord=
er-radius:0px;margin-top:20px;outline:rgb(204,204,204) solid 1px"><center><=
h3 style=3D"margin:10px 0px;font-family:&quot;Droid Sans&quot;;line-height:=
40px;color:rgb(64,64,64);font-size:18px">For building diametric thickness 0=
.002&quot; to 0.020&quot; - our hardest skirt coating.</h3></center>=C2=A0<=
p style=3D"margin:0px 0px 10px;color:rgb(85,85,85);font-family:Helvetica;fo=
nt-size:12px;line-height:24px"></p><center><input alt=3D"armorcc1" id=3D"gm=
ail-m_1270202899002735118gmail-imageField" name=3D"imageField" src=3D"https=
://ci3.googleusercontent.com/proxy/xeFXZ6XlHDo9PJ-wC-cIn86Fs51oZbIwe3Ufgzf6=
9rwcbRi2PbwXTDdUW-6byKWyQHmokOzc9ccaVCgA0s8M9HDJdqz2=3Ds0-d-e1-ft#https://w=
ww.line2linecoatings.com/img/armorcc1.png" type=3D"image" style=3D"font-siz=
e:14px;vertical-align:middle;line-height:20px;font-weight:normal;font-famil=
y:&quot;Helvetica Neue&quot;,Helvetica,Arial,sans-serif;width:auto">=C2=A0<=
input alt=3D"armorcc2" id=3D"gmail-m_1270202899002735118gmail-imageField2" =
name=3D"imageField2" src=3D"https://ci5.googleusercontent.com/proxy/sl6Plh6=
Yw5CTA2XqRUDkSXlekyil1p9XIX3W2oAlqcDUfoX0hw2hI9HxOKGguMjmC2v9RsXO1Vgh2Nz9vJ=
8URbIAXf2Y=3Ds0-d-e1-ft#https://www.line2linecoatings.com/img/armorcc2.png"=
 type=3D"image" style=3D"font-size:14px;vertical-align:middle;line-height:2=
0px;font-weight:normal;font-family:&quot;Helvetica Neue&quot;,Helvetica,Ari=
al,sans-serif;width:auto"></center><p style=3D"margin:0px 0px 10px;color:rg=
b(85,85,85);font-family:Helvetica;font-size:12px;line-height:24px"></p>=C2=
=A0<p style=3D"margin:0px 0px 10px;color:rgb(85,85,85);font-family:Helvetic=
a;font-size:12px;line-height:24px">Extreme wear resistance provides lasting=
 enlargement of piston skirt dimensions. Recommended for restoring clearanc=
es where they have opened up from skirt collapse, wear, clean-up honing or =
other.</p><p style=3D"margin:0px 0px 10px;color:rgb(85,85,85);font-family:H=
elvetica;font-size:12px;line-height:24px">Race proven durability in NHRA PR=
O-MOD. Coating can be topped with Slick CC=E2=84=A2 for the ultimate fit an=
d lubricity.</p><p style=3D"margin:0px 0px 10px;color:rgb(85,85,85);font-fa=
mily:Helvetica;font-size:12px;line-height:24px"><em>Recommended for 2 strok=
es and 4 strokes.</em></p><h2 style=3D"margin:10px 0px;font-family:&quot;Dr=
oid Sans&quot;;line-height:40px;color:rgb(64,64,64);font-size:22px">ADVANTA=
GES:</h2><ul style=3D"padding:0px;margin:0px;color:rgb(85,85,85);list-style=
:none;font-family:Helvetica;font-size:12px;line-height:24px"><li style=3D"l=
ine-height:20px;margin:6px 0px"><strong>Restores and Holds Clearances</stro=
ng></li></ul></div></div><br clear=3D"all"><div><div dir=3D"ltr"><div dir=
=3D"ltr">Bob Kramer</div></div></div></div>
</blockquote></div>

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