Subject: [Fot] Race Engine Refreshing Frequency - compression results

From: James Trudeau via Fot <[email-masked]>
Date: Sat, 28 Oct 2023 15:28:27 -0400

--===============0746784949383119035==
Content-Transfer-Encoding: 7bit

--Apple-Mail-6E75E982-70C1-4269-A12D-DCF13EF3DF8F
	charset=utf-8
Content-Transfer-Encoding: quoted-printable

I finished a 9 weekend race/school/track day season that started in April an=
d finished at Thompson in October with no obvious performance problems. Tota=
l of 38 engine hours including warmup, grid, race, cool down.=20

Did a dry compression test today:
210
225
195
200

I get some oil blow by at the valve cover cap and maybe some drips from lowe=
r end seals (not sure if oil starts at valve cover).=20

I=E2=80=99m sure I=E2=80=99ll hear a suggestion to do a leak down test and /=
 or wet compression.=20

Oil filter forensics?

In the absence of obvious issues, how much of a tear down is warranted?=20

Jim

Sent from my iPhone=

--Apple-Mail-6E75E982-70C1-4269-A12D-DCF13EF3DF8F
	charset=utf-8
Content-Transfer-Encoding: quoted-printable

<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">I finished a 9 weekend race/school/track da=
y season that started in April and finished at Thompson in October with no o=
bvious performance problems. Total of 38 engine hours including warmup, grid=
, race, cool down.&nbsp;<div><br></div><div>Did a dry compression test today=
:</div><div><ol class=3D"ol1" style=3D"-webkit-text-size-adjust: auto;"><li c=
lass=3D"li1" style=3D"margin: 0px; font-stretch: normal; line-height: normal=
;"><span class=3D"s1">210</span></li><li class=3D"li1" style=3D"margin: 0px;=
 font-stretch: normal; line-height: normal;"><span class=3D"s1">225</span></=
li><li class=3D"li1" style=3D"margin: 0px; font-stretch: normal; line-height=
: normal;"><span class=3D"s1">195</span></li><li class=3D"li1" style=3D"marg=
in: 0px; font-stretch: normal; line-height: normal;"><span class=3D"s1">200<=
/span></li></ol><div><br></div><div>I get some oil blow by at the valve cove=
r cap and maybe some drips from lower end seals (not sure if oil starts at v=
alve cover).&nbsp;</div><div><br></div><div>I=E2=80=99m sure I=E2=80=99ll he=
ar a suggestion to do a leak down test and / or wet compression.&nbsp;</div>=
<div><br></div><div>Oil filter forensics?</div><div><br></div><div>In the ab=
sence of obvious issues, how much of a tear down is warranted?&nbsp;</div><d=
iv><br></div><div>Jim<br><br><div dir=3D"ltr">Sent from my iPhone</div></div=
></div></body></html>=

--Apple-Mail-6E75E982-70C1-4269-A12D-DCF13EF3DF8F--

--===============0746784949383119035==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
[email-masked]

http://www.fot-racing.com

Archive: http://autox.team.net/archive http://www.team.net/pipermail/fot

--===============0746784949383119035==--