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A more critical liquid than fuel is oil. The engine must be plumbed to
Cosworth specs=8Aits data sheet DA0626 for =8CDFV250=B9 and the like. Its
critica=
l
the engine never sucks air, at high revs bearing failure will result. At
10000rpm the engine is rotating at 166 times plus per second.Peter; =8CI use
Kendall 20/50 mineral oil, which has a high zinc content which is great for
the cams and followers=B9. The Cosworth oil filter (Part #PP0404) needs to be
changed every 300 miles, the oil level needs to be checked religiously as
the engine uses as much as 4 quarts every 100 miles.Oil temperature should
be 90-100 degrees measured at the inlet to the pressure pump. 7000rpm shoul=
d
not be exceeded before the oil is at least 50 degrees centigrade.
I have included the above comments on oil as used in an historic F.1
Cosworth engine.
It seems flat tappets and zinc must go together.
For those interested see ; primotipo.com and search on say Cosworth,
Repco-Brabham for hours of fun
Joe
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<html><head></head><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: s=
pace; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size:=
14px; font-family: Calibri, sans-serif; "><div><table border=3D"0" cellspacin=
g=3D"0" cellpadding=3D"0" bgcolor=3D"#DDDDDD" style=3D"width: 1320px;
background-ima=
ge: initial; background-attachment: initial; background-origin: initial; bac=
kground-clip: initial; background-color: rgb(221, 221, 221); font-family: Ca=
libri; font-size: medium; "><tbody><tr><td><table border=3D"0"
cellspacing=3D"0"=
cellpadding=3D"0" align=3D"center" class=3D"subscribe-body" style=3D"width:
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padding-top: 10px; padding-right: 10px; padding-bottom: 10px; padding-left:=
10px; "><tbody><tr><td><div style=3D"direction: ltr; max-width: 600px; margin=
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ow-x: hidden; overflow-y: hidden; "><table border=3D"0" cellspacing=3D"0"
cellpa=
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n-width: 320px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; mar=
gin-left: auto; "><tbody><tr><td><table border=3D"0" cellspacing=3D"0"
cellpaddi=
ng=3D"20" bgcolor=3D"#ffffff" style=3D"width: 600px; "><tbody><tr><td><table
borde=
r=3D"0" cellspacing=3D"0" cellpadding=3D"0" style=3D"width: 560px;
"><tbody><tr><td =
valign=3D"top" class=3D"the-post"><div class=3D"post-content"
style=3D"direction: lt=
r; margin-top: 1em; max-width: 560px; "><p style=3D"direction: ltr; font-size:=
14px; line-height: 1.4em; color: rgb(68, 68, 68); font-family: 'Helvetica N=
eue', Helvetica, Arial, sans-serif; margin-top: 0px; margin-right: 0px; marg=
in-bottom: 1em; margin-left: 0px; ">A more critical liquid than fuel is oil.=
The engine must be plumbed to Cosworth specs…its data sheet DA0626 fo=
r ‘DFV250’ and the like. Its critical the engine never sucks air=
, at high revs bearing failure will result. At 10000rpm the engine is rotati=
ng at 166 times plus per second.</p><p style=3D"direction: ltr; font-size: 14p=
x; line-height: 1.4em; color: rgb(68, 68, 68); font-family: 'Helvetica Neue'=
, Helvetica, Arial, sans-serif; margin-top: 0px; margin-right: 0px; margin-b=
ottom: 1em; margin-left: 0px; ">Peter; ‘I use Kendall 20/50 mineral oi=
l, which has a high zinc content which is great for the cams and followers&#=
8217;. The Cosworth oil filter (Part #PP0404) needs to be changed every 300 =
miles, the oil level needs to be checked religiously as the engine uses as m=
uch as 4 quarts every 100 miles.</p><p style=3D"direction: ltr; font-size: 14p=
x; line-height: 1.4em; color: rgb(68, 68, 68); font-family: 'Helvetica Neue'=
, Helvetica, Arial, sans-serif; margin-top: 0px; margin-right: 0px; margin-b=
ottom: 1em; margin-left: 0px; ">Oil temperature should be 90-100 degrees mea=
sured at the inlet to the pressure pump. 7000rpm should not be exceeded befo=
re the oil is at least 50 degrees centigrade.</p></div></td></tr></tbody></t=
able></td></tr></tbody></table></td></tr></tbody></table><br></div><div styl=
e=3D"direction: ltr; max-width: 600px; margin-top: 0px; margin-right: auto; ma=
rgin-bottom: 0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden;=
"><br></div><div style=3D"direction: ltr; max-width: 600px; margin-top: 0px; =
margin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hidde=
n; overflow-y: hidden; "><font class=3D"Apple-style-span" face=3D"Helvetica
Neue=
">I have included the above comments on oil as used in an historic F.1  =
;Cosworth engine.</font></div><div style=3D"direction: ltr; max-width: 600px; =
margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; =
overflow-x: hidden; overflow-y: hidden; "><font class=3D"Apple-style-span" fac=
e=3D"Helvetica Neue"><br></font></div><div style=3D"direction: ltr; max-width:
6=
00px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: =
auto; overflow-x: hidden; overflow-y: hidden; "><font class=3D"Apple-style-spa=
n" face=3D"Helvetica Neue">It seems flat tappets and zinc must go together.</f=
ont></div><div style=3D"direction: ltr; max-width: 600px; margin-top: 0px; mar=
gin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hidden; =
overflow-y: hidden; "><font class=3D"Apple-style-span" face=3D"Helvetica
Neue"><=
br></font></div><div style=3D"direction: ltr; max-width: 600px; margin-top: 0p=
x; margin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hi=
dden; overflow-y: hidden; "><font class=3D"Apple-style-span" face=3D"Helvetica
N=
eue">For those interested see ; primotipo.com and search on say=
Cosworth, Repco-Brabham for hours of fun</font></div><div style=3D"direction:=
ltr; max-width: 600px; margin-top: 0px; margin-right: auto; margin-bottom: =
0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden; "><font clas=
s=3D"Apple-style-span" face=3D"Helvetica Neue"><br></font></div><div
style=3D"dire=
ction: ltr; max-width: 600px; margin-top: 0px; margin-right: auto; margin-bo=
ttom: 0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden; "><fon=
t class=3D"Apple-style-span" face=3D"Helvetica
Neue">Joe</font></div></td></tr><=
/tbody></table></td></tr></tbody></table></div></body></html>
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