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If you can barrow a leak down tester that is still the best tool to assess =
engine health. I also change oil filters after each race and cut it open t=
o see what is trapped inside. A well built TR race motor can easily do do=
uble those hours on the bottom end. In my opinion the key to long tern mot=
or health, assuming a good build, is a high quality race oil. My choice is=
Joe Gibbs Driven XP-3 10-30, I have bearings that look almost new at 50 hr=
s. using this oil. No such thing as =E2=80=9Ccheap=E2=80=9D racing oil. =
=E2=80=9CNever be beaten by parts=E2=80=9D K. Kastner.
Ken
Sent from Mail for Windows
From: James Trudeau via Fot
Sent: Saturday, October 28, 2023 2:06 PM
To: fot@autox.team.net
Subject: [Fot] Race Engine Refreshing Frequency - compression results
I finished a 9 weekend race/school/track day season that started in April a=
nd finished at Thompson in October with no obvious performance problems. To=
tal of 38 engine hours including warmup, grid, race, cool down.=C2=A0
Did a dry compression test today:
1. 210
2. 225
3. 195
4. 200
I get some oil blow by at the valve cover cap and maybe some drips from low=
er end seals (not sure if oil starts at valve cover).=C2=A0
I=E2=80=99m sure I=E2=80=99ll hear a suggestion to do a leak down test and =
/ or wet compression.=C2=A0
Oil filter forensics?
In the absence of obvious issues, how much of a tear down is warranted?=C2=
=A0
Jim
Sent from my iPhone
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--></style></head><body lang=3DEN-US link=3Dblue vlink=3D"#954F72" style=3D=
'word-wrap:break-word'><div class=3DWordSection1><p class=3DMsoNormal>If yo=
u can barrow a leak down tester that is still the best tool to assess engin=
e health.=C2=A0 I also change oil filters after each race and cut it open t=
o see what is trapped inside.=C2=A0 =C2=A0A well built TR race motor can ea=
sily do double those hours on the bottom end.=C2=A0 In my opinion the key t=
o long tern motor health, assuming a good build, is a high quality race oil=
.=C2=A0 My choice is Joe Gibbs Driven XP-3 10-30, I have bearings that look=
almost new at 50 hrs. using this oil.=C2=A0 No such thing as =E2=80=9Cchea=
p=E2=80=9D racing oil.=C2=A0 =E2=80=9CNever be beaten by parts=E2=80=9D K. =
Kastner.</p><p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>=
Ken</p><p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal><o:p>=
</o:p></p><p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNor=
mal>Sent from <a href=3D"https://go.microsoft.com/fwlink/?LinkId=3D550986";>=
Mail</a> for Windows</p><p class=3DMsoNormal><o:p> </o:p></p><div styl=
e=3D'mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt=
;padding:3.0pt 0in 0in 0in'><p class=3DMsoNormal style=3D'border:none;paddi=
ng:0in'><b>From: </b><a href=3D"mailto:fot@autox.team.net";>James Trudeau vi=
a Fot</a><br><b>Sent: </b>Saturday, October 28, 2023 2:06 PM<br><b>To: </b>=
<a href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a><br><b>Subject:=
</b>[Fot] Race Engine Refreshing Frequency - compression results</p></div>=
<p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>I finished a=
9 weekend race/school/track day season that started in April and finished =
at Thompson in October with no obvious performance problems. Total of 38 en=
gine hours including warmup, grid, race, cool down. <o:p></o:p></p><di=
v><p class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal=
>Did a dry compression test today:<o:p></o:p></p></div><div><ol style=3D'ma=
rgin-top:0in;-webkit-text-size-adjust: auto' start=3D1 type=3D1><li class=
=3Dli1 style=3D'margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1;fo=
nt-stretch: normal'><span class=3Ds1>210</span><o:p></o:p></li><li class=3D=
li1 style=3D'margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1;font-=
stretch: normal'><span class=3Ds1>225</span><o:p></o:p></li><li class=3Dli1=
style=3D'margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1;font-str=
etch: normal'><span class=3Ds1>195</span><o:p></o:p></li><li class=3Dli1 st=
yle=3D'margin-top:0in;margin-bottom:0in;mso-list:l0 level1 lfo1;font-stretc=
h: normal'><span class=3Ds1>200</span><o:p></o:p></li></ol><div><p class=3D=
MsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>I get some o=
il blow by at the valve cover cap and maybe some drips from lower end seals=
(not sure if oil starts at valve cover). <o:p></o:p></p></div><div><p=
class=3DMsoNormal><o:p> </o:p></p></div><div><p class=3DMsoNormal>I=
=E2=80=99m sure I=E2=80=99ll hear a suggestion to do a leak down test and /=
or wet compression. <o:p></o:p></p></div><div><p class=3DMsoNormal><o=
:p> </o:p></p></div><div><p class=3DMsoNormal>Oil filter forensics?<o:=
p></o:p></p></div><div><p class=3DMsoNormal><o:p> </o:p></p></div><div=
><p class=3DMsoNormal>In the absence of obvious issues, how much of a tear =
down is warranted? <o:p></o:p></p></div><div><p class=3DMsoNormal><o:p=
> </o:p></p></div><div><p class=3DMsoNormal style=3D'margin-bottom:12.=
0pt'>Jim<o:p></o:p></p></div></div><p class=3DMsoNormal>Sent from my iPhone=
<o:p></o:p></p><p class=3DMsoNormal><o:p> </o:p></p></div></body></htm=
l>=
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http://www.fot-racing.com
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