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Thanks for the feedback. My tappets have never been silent. They have alwa=
ys made noise and though not as loud as my '68 MGB/GT that I had, they're =
not quiet. And after having adjusted them when I retorqued the head at 500=
mile mark, they still weren't silent. They sound like my old BN1 did. And=
because I have louvered bonnet on this car, they seem even a bit louder, =
but with the bonnet up and running in the garage, they sound almost exactl=
y like my old car. Now when I'm out driving they seem pretty silent and th=
e engine runs very smooth.=0A=C2=A0=C2=A0=C2=A0As for "fir" in the oil. Wh=
en I drained my engine at the 500 mile mark, I ran all of the oil through =
a fine, paint filter and then used a magnet in the filter. Nothing appeare=
d on the magnet. I also took the magnet and ran it through the oil before =
I poured it through the filter, and again nothing. I even ran the magnet t=
hrough the empty drain pan after transferring the oil, and again, nothing.=
=0A=C2=A0=C2=A0=C2=A0Sorry to hear about your troubles and thank you for t=
he tips on what to listen for and what to look for. Good luck with whateve=
r you decide to do. And just to be clear, these lifters you used are not t=
he new "new" ones available through AH Spares. Rather they are New Old Sto=
ck ones that have been in you possession for quite a while now, right?=C2=A0=
=0A=C2=A0=C2=A0=C2=A0Again, good luck and hopefully the cam isn't complete=
ly destroyed and you caught it in time.=C2=A0=0AThanks!=0ASteven=0A=0AOn A=
ugust 5, 2021 at 5:39 AM, Michael Salter <michaelsalter@gmail.com> wrote:=0A=
=0A=0AThe first sign of problems was having to adjust the tappets which ha=
d initially been silent after 2000 miles and then again at 4500.=0AAfter a=
djusting they were still audible and had previously been silent.=0AThen at=
the 2000 and 4000 mile oil changes there was "fir" in the drain plug magn=
et.=0AI'm very disappointed to have destroyed a very low mileage "M" cam a=
nd a set of NOS lifters that I had been saving for decades.=0AI'm seriousl=
y considering having silicon nitride lifters manufactured but at over $100=
0 a set its a serious investment.=0A=0A=0AM=0A=0A=0AOn Wed., Aug. 4, 2021,=
10:47 a.m. Steven Kingsbury, <airtightproductions@icloud.com> wrote:=0A=0A=
I just rebuilt my 100 engine and purchased my lifters from AH Spares in th=
e UK. These were their new design for better oil flow. I now have 1000 mil=
es or so on the new engine and once I got my problems figured out with my =
distributor, the car is running well and smooth.=0A=C2=A0=C2=A0=C2=A0Now I=
'm wondering when the other shoe is going to drop! What problems did you h=
ave pointing you to the lifters as the source of those problems? When I re=
torqued the head, I readjusted the rockers and found no problems. They wer=
e a little off, but I expected a little.=0A=C2=A0=C2=A0=C2=A0What should I=
be looking for? I used Driven Break In oil and then I switched to VR1 lik=
e you after 500 miles. I have been driving the car to build up some trust =
in it and it's turning in to a joy to drive. I've got M mods on this engin=
e, cam, H6 carbs, M pistons and these new lifters. So far, so good.=C2=A0=0A=
=C2=A0=C2=A0=C2=A0Thanks for your help,=0ASteven Kingsbury=0ABN1=0A=0AOn A=
ugust 3, 2021 at 5:19 PM, Michael Salter via Healeys <healeys@autox.team.n=
et> wrote:=0A=0A=0AAfter only 6000 miles the NOS BMC lifters that I instal=
led in my engine with a very low mileage "M" cam have started to deteriora=
te.=C2=A0=0AThis engine has had a steady diet of VR1 non synthetic and it =
has had 4 changes in 6K miles.=C2=A0=0AVery disappointing.=C2=A0=0AI'm=C2=A0=
considering trying bucket type Buick lifters with longer push rods and a =
new cam.=0ADoes anyone have experience with the durability of the old Buic=
k lifters ... getting a little desperate here.=0AFortunately I caught this=
issue before it ruined the engine.=0A=0A=0AM=0A__________________________=
_____________________=0ASupport Team.Net http://www.team.net/donate.html=0A=
il/healeys http://autox.team.net/archive=0A=0AHealeys@autox.team.net=0Ahtt=
p://autox.team.net/mailman/listinfo/healeys=0A=0AUnsubscribe/Manage: http:=
//autox.team.net/mailman/options/healeys/airtightproductions@icloud.com=0A=
=0A
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<html><body><div>Thanks for the feedback. My tappets have never been silent.
They have=
always made noise and though not as loud as my '68 MGB/GT that I had, the=
y're not quiet. And after having adjusted them when I retorqued the head a=
t 500 mile mark, they still weren't silent. They sound like my old BN1 did=
. And because I have louvered bonnet on this car, they seem even a bit lou=
der, but with the bonnet up and running in the garage, they sound almost e=
xactly like my old car. Now when I'm out driving they seem pretty silent a=
nd the engine runs very smooth.</div><div> As for "fir" i=
n the oil. When I drained my engine at the 500 mile mark, I ran all of the=
oil through a fine, paint filter and then used a magnet in the filter. No=
thing appeared on the magnet. I also took the magnet and ran it through th=
e oil before I poured it through the filter, and again nothing. I even ran=
the magnet through the empty drain pan after transferring the oil, and ag=
ain, nothing.</div><div> Sorry to hear about your trouble=
s and thank you for the tips on what to listen for and what to look for. G=
ood luck with whatever you decide to do. And just to be clear, these lifte=
rs you used are not the new "new" ones available through AH Spares. Rather=
they are New Old Stock ones that have been in you possession for quite a =
while now, right? </div><div> Again, good luck and h=
opefully the cam isn't completely destroyed and you caught it in time.&nbs=
p;</div><div>Thanks!</div><div>Steven</div><div><br>On August 5, 2021 at 5=
:39 AM, Michael Salter <michaelsalter@gmail.com> wrote:<br><br></div=
><div><blockquote type=3D"cite"><div class=3D"msg-quote"><div dir=3D"auto"=
>The first sign of problems was having to adjust the tappets which had ini=
tially been silent after 2000 miles and then again at 4500.<div dir=3D"aut=
o">After adjusting they were still audible and had previously been silent.=
</div><div dir=3D"auto">Then at the 2000 and 4000 mile oil changes there w=
as "fir" in the drain plug magnet.</div><div dir=3D"auto">I'm very disappo=
inted to have destroyed a very low mileage "M" cam and a set of NOS lifter=
s that I had been saving for decades.</div><div dir=3D"auto">I'm seriously=
considering having silicon nitride lifters manufactured but at over $1000=
a set its a serious investment.</div><div dir=3D"auto"><br></div><div dir=
=3D"auto">M</div></div><br><div class=3D"gmail_quote"><div class=3D"gmail_=
attr" dir=3D"ltr">On Wed., Aug. 4, 2021, 10:47 a.m. Steven Kingsbury, <=
<a href=3D"mailto:airtightproductions@icloud.com"; data-mce-href=3D"mailto:=
airtightproductions@icloud.com">airtightproductions@icloud.com</a>> wro=
te:<br></div><blockquote style=3D"margin: 0 0 0 .8ex; border-left: 1px #cc=
c solid; padding-left: 1ex;" class=3D"gmail_quote" data-mce-style=3D"margi=
n: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;"><div><div>=
I just rebuilt my 100 engine and purchased my lifters from AH Spares in th=
e UK. These were their new design for better oil flow. I now have 1000 mil=
es or so on the new engine and once I got my problems figured out with my =
distributor, the car is running well and smooth.</div><div> &nb=
sp;Now I'm wondering when the other shoe is going to drop! What problems d=
id you have pointing you to the lifters as the source of those problems? W=
hen I retorqued the head, I readjusted the rockers and found no problems. =
They were a little off, but I expected a little.</div><div> &nb=
sp;What should I be looking for? I used Driven Break In oil and then I swi=
tched to VR1 like you after 500 miles. I have been driving the car to buil=
d up some trust in it and it's turning in to a joy to drive. I've got M mo=
ds on this engine, cam, H6 carbs, M pistons and these new lifters. So far,=
so good. </div><div> Thanks for your help,</div><di=
v>Steven Kingsbury</div><div>BN1</div><div><br>On August 3, 2021 at 5:19 P=
M, Michael Salter via Healeys <<a href=3D"mailto:healeys@autox.team.net=
" data-mce-href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</=
a>> wrote:<br><br></div><div><blockquote type=3D"cite"><div><div dir=3D=
"auto">After only 6000 miles the NOS BMC lifters that I installed in my en=
gine with a very low mileage "M" cam have started to deteriorate. <di=
v dir=3D"auto">This engine has had a steady diet of VR1 non synthetic and =
it has had 4 changes in 6K miles. </div><div dir=3D"auto">Very disapp=
ointing. </div><div dir=3D"auto">I'm considering trying bucket =
type Buick lifters with longer push rods and a new cam.</div><div dir=3D"a=
uto">Does anyone have experience with the durability of the old Buick lift=
ers ... getting a little desperate here.</div><div dir=3D"auto">Fortunatel=
y I caught this issue before it ruined the engine.</div><div dir=3D"auto">=
<br></div><div dir=3D"auto">M</div></div><div><span>______________________=
_________________________<br>Support <a href=3D"http://Team.Net"; data-mce-=
href=3D"http://Team.Net";>Team.Net</a> <a href=3D"http://www.team.net/donat=
e.html" data-mce-href=3D"http://www.team.net/donate.html";>http://www.team.=
net/donate.html</a><br>Suggested annual donation $12.75<br><br>Archive: <a=
href=3D"http://www.team.net/pipermail/healeys"; data-mce-href=3D"http://ww=
w.team.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a> <a=
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s">http://autox.team.net/mailman/listinfo/healeys</a><br><br>Unsubscribe/M=
anage: <a href=3D"http://autox.team.net/mailman/options/healeys/airtightpr=
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ns/healeys/airtightproductions@icloud.com">http://autox.team.net/mailman/o=
ptions/healeys/airtightproductions@icloud.com</a><br><br></span></div></di=
v></blockquote></div></div></blockquote></div></div></blockquote></div></body></html>
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