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That would depend on what the cam and rocker manufacturers say. They usuall=
y have a spec to use with their parts. A WAG on my part would be 0.015 in.
The valves on my shiny new '72 Midget were set to 0.006 in. One of the many=
things I found that explain why the previous owner couldn't get it to run r=
ight. :-)
Sent from my keyboard
> On Oct 31, 2015, at 4:49 PM, Michael MacLean <rrengineer.mike@att.net> wro=
te:
>=20
> How about when you have 1.5 rocker arms? Drove the Bugeye around yesterda=
y. Runs great, still blue smoke on acceleration on a recent rebuild. At le=
at 1000 miles since rebuild. I'm afraid the rings never seated properly. N=
ot sure of the cylinder wall surface during the rebuild as I did not so that=
part of it.
> Mike MacLean
>=20
>=20
>=20
> On Saturday, October 31, 2015 1:26 PM, Rick Fisk via Spridgets <spridgets@=
autox.team.net> wrote:
>=20
>=20
> The 0.029 in. spec is a whole different thing used when you are assembling=
the engine. If your engine is together and you just want to set the valve c=
learance it should be 0.012 in. set cold.
>=20
> Sent from my keyboard
>=20
>> On Oct 31, 2015, at 4:06 PM, Michael Rowe via Spridgets <spridgets@autox.=
team.net> wrote:
>>=20
>=20
> New 1275 engine.
> Haynes says "Rocker clearance, timing only =3D 0.029 in.
> My mechanic/tutor says, "that is twice what it should be."
> Bentley says:
> Rocker clearance: Running (Standard) =3D 0.012 in. cold
> Running (competition work) =3D 0.015 in.
> timing =3D 0.029 in.
> Online sites agree on =3D .012 in. cold.
> =20
> So what is the 0.029 in. for?
> =20
> Michael Rowe
>> ------------------------
>>=20
>> spridgets@autox.team.net
>>=20
>> Donate: http://www.team.net/donate.html
>> Suggested annual donation: $12.75
>>=20
>> Archive: http://www.team.net/archive
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>> Unsubscribe/Manage: http://autox.team.net/mailman/options/spridgets/refis=
k@chartermi.net
>=20
> ------------------------
>=20
> spridgets@autox.team.net
>=20
> Donate: http://www.team.net/donate.html
> Suggested annual donation: $12.75
>=20
> Archive: http://www.team.net/archive
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neer.mike@att.net
>=20
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div>That would depend on what the cam and r=
ocker manufacturers say. They usually have a spec to use with their pa=
rts. A WAG on my part would be 0.015 in.</div><div><br></div><div>The v=
alves on my shiny new '72 Midget were set to 0.006 in. One of the many=
things I found that explain why the previous owner couldn't get it to run r=
ight. :-)<br><br>Sent from my keyboard</div><div><br>On Oct 31, 2015, a=
t 4:49 PM, Michael MacLean <<a href=3D"mailto:rrengineer.mike@att.net";>rr=
engineer.mike@att.net</a>> wrote:<br><br></div><blockquote type=3D"cite">=
<div><div style=3D"color:#000; background-color:#fff; font-family:times new r=
oman, new york, times, serif;font-size:16px"><div id=3D"yui_3_16_0_1_1446323=
015003_17729">How about when you have 1.5 rocker arms? Drove the Bugey=
e around yesterday. Runs great, still blue smoke on acceleration on a r=
ecent rebuild. At leat 1000 miles since rebuild. I'm afraid the r=
ings never seated properly. Not sure of the cylinder wall surface duri=
ng the rebuild as I did not so that part of it.<br></div><div id=3D"yui_3_16=
_0_1_1446323015003_17730" dir=3D"ltr">Mike MacLean<br></div><div id=3D"yui_3=
_16_0_1_1446323015003_17731"><span></span></div> <br><div class=3D"qtdSepar=
ateBR"><br><br></div><div style=3D"display: block;" class=3D"yahoo_quoted"> <=
div style=3D"font-family: times new roman, new york, times, serif; font-size=
: 16px;"> <div style=3D"font-family: HelveticaNeue, Helvetica Neue, Helvetic=
a, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir=3D"ltr"> <f=
ont face=3D"Arial" size=3D"2"> On Saturday, October 31, 2015 1:26 PM, Rick Fi=
sk via Spridgets <<a href=3D"mailto:spridgets@autox.team.net";>spridgets@a=
utox.team.net</a>> wrote:<br> </font> </div> <blockquote style=3D"border-=
left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding=
-left: 5px;"> <br><br> <div class=3D"y_msg_container"><div id=3D"yiv3068736=
433"><div><div>The 0.029 in. spec is a whole different thing used when you a=
re assembling the engine. If your engine is together and you just want=
to set the valve clearance it should be 0.012 in. set cold.<br clear=3D"non=
e"><br clear=3D"none">Sent from my keyboard</div><div class=3D"yiv3068736433=
yqt3461902488" id=3D"yiv3068736433yqt61360"><div><br clear=3D"none">On Oct 3=
1, 2015, at 4:06 PM, Michael Rowe via Spridgets <<a rel=3D"nofollow" shap=
e=3D"rect" ymailto=3D"mailto:spridgets@autox.team.net"; target=3D"_blank" hre=
f=3D"mailto:spridgets@autox.team.net";>spridgets@autox.team.net</a>> wrote=
:<br clear=3D"none"><br clear=3D"none"></div><blockquote type=3D"cite"><div>=
</div></blockquote></div></div><div class=3D"yiv3068736433yqt3461902488" id=3D=
"yiv3068736433yqt64797"><style></style></div><div><div class=3D"yiv306873643=
3yqt3461902488" id=3D"yiv3068736433yqt61805"><div><font face=3D"Arial">New 1=
275 engine.</font></div>
<div><font face=3D"Arial">Haynes says "Rocker clearance, timing only =3D&nbs=
p;0.029=20
in.</font></div>
<div><font face=3D"Arial">My mechanic/tutor says, "that is twice what it sho=
uld=20
be."</font></div>
<div><font face=3D"Arial">Bentley says:</font></div>
<div><font face=3D"Arial">Rocker clearance: Running (Standard) =3D 0.012 in.=
=20
cold</font></div>
<div><font face=3D"Arial"> =
=20
=20=
Running (competition work) =3D 0.015 in.</font></div>
<div><font face=3D"Arial"> &n=
bsp; =
=20
timing =3D 0.029 in.</font></div>
<div><font face=3D"Arial">Online sites agree on =3D .012 in.=20
cold.</font></div>
<div><font face=3D"Arial"></font> </div>
<div><font face=3D"Arial">So what is the 0.029 in. for?</font></div>
<div><font face=3D"Arial"></font> </div>
<div><font face=3D"Arial">Michael Rowe</font></div></div>
<blockquote type=3D"cite"><div><span>------------------------</span><br clea=
r=3D"none"><span></span><br clear=3D"none"><span><a rel=3D"nofollow" shape=3D=
"rect" ymailto=3D"mailto:spridgets@autox.team.net"; target=3D"_blank" href=3D=
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ar=3D"none"><span></span><br clear=3D"none"><span>Donate: <a rel=3D"nofollow=
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efisk@chartermi.net</a></span><br clear=3D"none"></div></blockquote></div></=
div><br><div class=3D"yqt3461902488" id=3D"yqt21911">-----------------------=
-<br clear=3D"none"><br clear=3D"none"><a shape=3D"rect" ymailto=3D"mailto:s=
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div><br><br></div> </blockquote> </div> </div> </div></div></div></blockq=
uote></body></html>=
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