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[Mgs] A short tale of parts & service

To: mgs@autox.team.net
Subject: [Mgs] A short tale of parts & service
From: don--- via Mgs <mgs@autox.team.net>
Date: Tue, 25 Sep 2018 23:40:09 -0700 (PDT)
Delivered-to: mharc@autox.team.net
Delivered-to: mgs@autox.team.net
Importance: Normal
References: <CAK23Kv9oHmWrY9tKA3083enp4Wyfn9Cog8akm=7-_jVODX5Dfw@mail.gmail.com> <18d170e5-53bc-ecf6-b8bc-674093a8f7ad@twc.com> <789BD631-D530-405D-8D48-B921D98313AD@sonic.net>
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=0AMany years ago, I had a stock original metal fan on a MGA loose a blade =
which punctured the car's body.  So it's not just plastic fans which can fa=
il!=0A =0A =0A-----Original Message-----=0AFrom: "Max Heim via Mgs" <mgs@au=
tox.team.net>=0ASent: Tuesday, September 25, 2018 5:35pm=0ATo: "mgs@autox.t=
eam.net List" <mgs@autox.team.net>=0ASubject: [Mgs] A short tale of parts &=
 service=0A=0A=0A=0AI haven=E2=80=99t said much on the list about my projec=
t. but I got my =E2=80=9Cnew=E2=80=9D 66 B roadster together in time for th=
e start of the California Melee on Sept. 8. Unfortunately, a blade flew off=
 the new Moss plastic fan within the first ten miles and punctured the radi=
ator, so that was as far as it got =E2=80=94 from the San Francisco Presidi=
o to Marin Civic Center. =0AI made the mistake of trying to get it to the n=
ext exit (it was a bad place to be on the shoulder, between the sound wall =
and 5 lanes of traffic doing 75+), which resulted in overheating and a blow=
n head gasket. Total mileage to failure on this fan was 307 miles.=0ASubseq=
uent examination of the stub revealed an air pocket in the plastic right at=
 the center of the base of the blade. Moss accepted my photo of this as evi=
dence of a manufacturing flaw. This model of fan was already out of product=
ion (and out of warranty) =E2=80=94 I had purchased it as part of a large o=
rder back in 2015 when the car body was still in the paint shop.=0ABut rega=
rdless, they decided to send me a new fan ("new model" nylon 7-blade fan) a=
nd a new aluminum radiator (the shop had told me mine was irreparable). I t=
hought this was pretty decent of them.=0AI just picked up my head at the ma=
chine shop where they had skimmed the surface and cleaned up the valves. In=
 the meantime I had inspected the lifters based on a tip from Dave at Briti=
sh Motorsports in Campbell and found a few of them were showing pitting. By=
 replacing them now I can save the cam.=0ANow I just need to pick up the li=
fters and the gasket set and I should be able to have it back together this=
 weekend.=0AA few tips based on my experience:=0A1. Just shut it down. If I=
 had stayed out on the freeway verge I would have saved the head gasket, an=
d AAA would have picked me up in a timely manner. But since I had reported =
myself =E2=80=9Csafe=E2=80=9D and off the highway, it took 4 hours to get a=
 tow. =0A2. Check your lifters every so often. I had replaced the cam and l=
ifters due to lifter spalling sometime between 1998 and 2010. The new lifte=
rs were just starting to pit in 2018.3. If you have a yellow plastic 7-blad=
ed fan from Moss USA purchased prior to mid-2015, you may want to consider =
retiring it. I suppose if it hasn=E2=80=99t broken so far, it probably does=
n=E2=80=99t have air bubbles in a critical location. But they had perhaps a=
 dozen reported incidents. The current product being sold as part #434-332 =
is a different pattern by a different maker in a different material, so sho=
uld not be a cause for worry.=0ABuy British, Buy Best!=0A=0A=0A=0A=0A--=0AM=
ax Heim=0A'66 MGB
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<font face=3D"arial" size=3D"3"><p style=3D"margin:0;padding:0;font-family:=
 arial; font-size: 12pt; overflow-wrap: break-word;">Many years ago, I had =
a stock original metal fan on a MGA loose a blade which punctured the car's=
 body.&nbsp; So it's not just plastic fans which can fail!</p>=0A<p style=
=3D"margin:0;padding:0;font-family: arial; font-size: 12pt; overflow-wrap: =
break-word;">&nbsp;</p>=0A<p style=3D"margin:0;padding:0;font-family: arial=
; font-size: 12pt; overflow-wrap: break-word;">&nbsp;</p>=0A<p style=3D"mar=
gin:0;padding:0;font-family: arial; font-size: 12pt; overflow-wrap: break-w=
ord;">-----Original Message-----<br />From: "Max Heim via Mgs" &lt;mgs@auto=
x.team.net&gt;<br />Sent: Tuesday, September 25, 2018 5:35pm<br />To: "mgs@=
autox.team.net List" &lt;mgs@autox.team.net&gt;<br />Subject: [Mgs] A short=
 tale of parts &amp; service<br /><br /></p>=0A<div id=3D"SafeStyles1537943=
895">=0A<div class=3D"">I haven=E2=80=99t said much on the list about my pr=
oject. but I got my =E2=80=9Cnew=E2=80=9D 66 B roadster together in time fo=
r the start of the California Melee on Sept. 8. Unfortunately, a blade flew=
 off the new Moss plastic fan within the first ten miles and punctured the =
radiator, so that was as far as it got =E2=80=94 from the San Francisco Pre=
sidio to Marin Civic Center.&nbsp;</div>=0A<div class=3D"">I made the mista=
ke of trying to get it to the next exit (it was a bad place to be on the sh=
oulder, between the sound wall and 5 lanes of traffic doing 75+), which res=
ulted in overheating and a blown head gasket. Total mileage to failure on t=
his fan was 307 miles.</div>=0A<div class=3D"">Subsequent examination of th=
e stub revealed an air pocket in the plastic right at the center of the bas=
e of the blade. Moss accepted my photo of this as evidence of a manufacturi=
ng flaw. This model of fan was already out of production (and out of warran=
ty) =E2=80=94 I had purchased it as part of a large order back in 2015 when=
 the car body was still in the paint shop.</div>=0A<div class=3D"">But rega=
rdless, they decided to send me a new fan ("new model" nylon 7-blade fan) a=
nd a new aluminum radiator (the shop had told me mine was irreparable). I t=
hought this was pretty decent of them.</div>=0A<div class=3D"">I just picke=
d up my head at the machine shop where they had skimmed the surface and cle=
aned up the valves. In the meantime I had inspected the lifters based on a =
tip from Dave at British Motorsports in Campbell and found a few of them we=
re showing pitting. By replacing them now I can save the cam.</div>=0A<div =
class=3D"">Now I just need to pick up the lifters and the gasket set and I =
should be able to have it back together this weekend.</div>=0A<div class=3D=
"">A few tips based on my experience:</div>=0A<div class=3D"">1. Just shut =
it down. If I had stayed out on the freeway verge I would have saved the he=
ad gasket, and AAA would have picked me up in a timely manner. But since I =
had reported myself =E2=80=9Csafe=E2=80=9D and off the highway, it took 4 h=
ours to get a tow.&nbsp;</div>=0A<div class=3D"">2. Check your lifters ever=
y so often. I had replaced the cam and lifters due to lifter spalling somet=
ime between 1998 and 2010. The new lifters were just starting to pit in 201=
8.</div>=0A3. If you have a yellow plastic 7-bladed fan from Moss USA purch=
ased prior to mid-2015, you may want to consider retiring it. I suppose if =
it hasn=E2=80=99t broken so far, it probably doesn=E2=80=99t have air bubbl=
es in a critical location. But they had perhaps a dozen reported incidents.=
 The current product being sold as part #434-332 is a different pattern by =
a different maker in a different material, so should not be a cause for wor=
ry.=0A<div class=3D"">Buy British, Buy Best!</div>=0A<div class=3D""><br cl=
ass=3D"" />=0A<div class=3D"">=0A<div class=3D"" style=3D"color: #000000; l=
etter-spacing: normal; text-align: start; text-indent: 0px; text-transform:=
 none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0=
px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: af=
ter-white-space;">=0A<div class=3D"" style=3D"color: #000000; letter-spacin=
g: normal; text-align: start; text-indent: 0px; text-transform: none; white=
-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wra=
p: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-sp=
ace;">=0A<div class=3D"" style=3D"margin: 0px; font-size: 13px;">--</div>=
=0A<div class=3D"" style=3D"margin: 0px; font-size: 13px; min-height: 16px;=
">Max Heim</div>=0A<div class=3D"" style=3D"margin: 0px; font-size: 13px;">=
'66 MGB</div>=0A</div>=0A</div>=0A</div>=0A</div>=0A</div></font>
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