Subject: [Healeys] Oil as used in Cosworth F.1 DFV

From: "J. Armour" <[email-masked]>
Date: Fri, 13 May 2016 11:12:34 +1000

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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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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&#8230;its data sheet DA0626 fo=
r &#8216;DFV250&#8217; 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; &#8216;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 &nbsp=
;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 ; &nbsp; &nbsp;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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