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Good practice
Ira Erbs
1959 AH 100-6
1967 MGB
Milwaukie, OR
On Sun, Aug 8, 2021, 6:09 PM Alan Seigrist <healey.nut@gmail.com> wrote:
> So adding zddp on top of whatever is in there is okay? I have Castrol
> 20W-50 in my motor... also use the Valvoline too.
>
> On Sat, Aug 7, 2021 at 11:11 PM Michael Oritt via Healeys <
> healeys@autox.team.net> wrote:
>
>> In about 2007 just before ZDDP content in motor oils became a commonly
>> talked-about issue in vintage racing communities, I bought a new race
>> engine for my MGA-powered Elva Courier from a reputable builder who
>> recommended I use Mobil 1. Somewhere during the first race weekend
>> performance fell off and upon disassembly it was determined that the cam
>> lobes had been damaged due to wear from the lifters.
>>
>> After replacing the cam and lifters I began using RP racing oil and
>> throwing in ZDDP additive for good measure. Though the Royal Purple
>> probably contained sufficient zddp on its own and some folks
>> cautioned against too high levels of zinc I have continued this
>> combination and have not lost a cam, etc. since.
>>
>> YMMV....
>>
>> On Thu, Aug 5, 2021 at 11:16 PM Michael Salter <michaelsalter@gmail.com>
>> wrote:
>>
>>> The first sign of problems was having to adjust the tappets which had
>>> initially been silent after 2000 miles and then again at 4500.
>>> After adjusting they were still audible and had previously been silent.
>>> Then at the 2000 and 4000 mile oil changes there was "fir" in the drain
>>> plug magnet.
>>> I'm very disappointed to have destroyed a very low mileage "M" cam and a
>>> set of NOS lifters that I had been saving for decades.
>>> I'm seriously considering having silicon nitride lifters manufactured
>>> but at over $1000 a set its a serious investment.
>>>
>>> M
>>>
>>> On Wed., Aug. 4, 2021, 10:47 a.m. Steven Kingsbury, <
>>> airtightproductions@icloud.com> wrote:
>>>
>>>> I just rebuilt my 100 engine and purchased my lifters from AH Spares in
>>>> the UK. These were their new design for better oil flow. I now have 1000
>>>> miles or so on the new engine and once I got my problems figured out with
>>>> my distributor, the car is running well and smooth.
>>>> Now I'm wondering when the other shoe is going to drop! What
>>>> problems did you have pointing you to the lifters as the source of those
>>>> problems? When I retorqued the head, I readjusted the rockers and found no
>>>> problems. They were a little off, but I expected a little.
>>>> What should I be looking for? I used Driven Break In oil and then I
>>>> switched to VR1 like 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 engine, cam, H6 carbs, M pistons and these new lifters. So
>>>> far, so good.
>>>> Thanks for your help,
>>>> Steven Kingsbury
>>>> BN1
>>>>
>>>> On August 3, 2021 at 5:19 PM, Michael Salter via Healeys <
>>>> healeys@autox.team.net> wrote:
>>>>
>>>> After only 6000 miles the NOS BMC lifters that I installed in my engine
>>>> with a very low mileage "M" cam have started to deteriorate.
>>>> This engine has had a steady diet of VR1 non synthetic and it has had 4
>>>> changes in 6K miles.
>>>> Very disappointing.
>>>> I'm considering trying bucket type Buick lifters with longer push rods
>>>> and a new cam.
>>>> Does anyone have experience with the durability of the old Buick
>>>> lifters ... getting a little desperate here.
>>>> Fortunately I caught this issue before it ruined the engine.
>>>>
>>>> M
>>>> _______________________________________________
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>>>
>>
>> --
>> Best--Michael
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Content-Transfer-Encoding: quoted-printable
<div dir=3D"auto">Good practice<br><br><div data-smartmail=3D"gmail_signatu=
re">Ira Erbs<br>1959 AH 100-6<br>1967 MGB<br>Milwaukie, OR</div></div><br><=
div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Sun, Aug=
8, 2021, 6:09 PM Alan Seigrist <<a href=3D"mailto:healey.nut@gmail.com"=
>healey.nut@gmail.com</a>> wrote:<br></div><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex=
"><div dir=3D"ltr">So adding zddp on top of whatever is in there is okay?=
=C2=A0 I have Castrol 20W-50 in my motor... also use the Valvoline too.</di=
v><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On S=
at, Aug 7, 2021 at 11:11 PM Michael Oritt via Healeys <<a href=3D"mailto=
:healeys@autox.team.net" target=3D"_blank" rel=3D"noreferrer">healeys@autox=
.team.net</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding=
-left:1ex"><div dir=3D"ltr"><div class=3D"gmail_default" style=3D"color:rgb=
(51,51,255)">In about 2007 just before ZDDP content in motor oils became a =
commonly talked-about issue in vintage racing communities, I bought a new r=
ace engine for my MGA-powered Elva Courier from a reputable builder who rec=
ommended=C2=A0I use Mobil 1.=C2=A0 Somewhere during the first race weekend =
performance fell off and upon disassembly it was determined that the cam lo=
bes had been damaged due to wear from the lifters.=C2=A0=C2=A0</div><div cl=
ass=3D"gmail_default" style=3D"color:rgb(51,51,255)"><br></div><div class=
=3D"gmail_default" style=3D"color:rgb(51,51,255)">After replacing the cam a=
nd lifters I began=C2=A0using RP racing oil and throwing in ZDDP additive f=
or good measure.=C2=A0 Though the Royal Purple probably contained sufficien=
t zddp on its own and some folks cautioned=C2=A0against too high levels of =
zinc I have=C2=A0 continued this combination and have not lost a cam, etc. =
since.</div><div class=3D"gmail_default" style=3D"color:rgb(51,51,255)"><br=
></div><div class=3D"gmail_default" style=3D"color:rgb(51,51,255)">YMMV....=
=C2=A0=C2=A0</div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" cla=
ss=3D"gmail_attr">On Thu, Aug 5, 2021 at 11:16 PM Michael Salter <<a hre=
f=3D"mailto:michaelsalter@gmail.com"; target=3D"_blank" rel=3D"noreferrer">m=
ichaelsalter@gmail.com</a>> wrote:<br></div><blockquote class=3D"gmail_q=
uote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,2=
04);padding-left:1ex"><div dir=3D"auto">The first sign of problems was havi=
ng to adjust the tappets which had initially been silent after 2000 miles a=
nd then again at 4500.<div dir=3D"auto">After adjusting they were still aud=
ible and had previously been silent.</div><div dir=3D"auto">Then at the 200=
0 and 4000 mile oil changes there was "fir" in the drain plug mag=
net.</div><div dir=3D"auto">I'm very disappointed to have destroyed a v=
ery low mileage "M" cam and a set of NOS lifters that I had been =
saving for decades.</div><div dir=3D"auto">I'm seriously considering ha=
ving silicon nitride lifters manufactured but at over $1000 a set its a ser=
ious investment.</div><div dir=3D"auto"><br></div><div dir=3D"auto">M</div>=
</div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">=
On Wed., Aug. 4, 2021, 10:47 a.m. Steven Kingsbury, <<a href=3D"mailto:a=
irtightproductions@icloud.com" target=3D"_blank" rel=3D"noreferrer">airtigh=
tproductions@icloud.com</a>> wrote:<br></div><blockquote class=3D"gmail_=
quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,=
204);padding-left:1ex"><div><div>I just rebuilt my 100 engine and purchased=
my lifters from AH Spares in the UK. These were their new design for bette=
r oil flow. I now have 1000 miles or so on the new engine and once I got my=
problems figured out with my distributor, the car is running well and smoo=
th.</div><div>=C2=A0=C2=A0=C2=A0Now I'm wondering when the other shoe i=
s going to drop! What problems did you have pointing you to the lifters as =
the source of those problems? When I retorqued the head, I readjusted the r=
ockers and found no problems. They were a little off, but I expected a litt=
le.</div><div>=C2=A0=C2=A0=C2=A0What should I be looking for? I used Driven=
Break In oil and then I switched to VR1 like you after 500 miles. I have b=
een 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 engine, cam, H6 carbs, M pisto=
ns and these new lifters. So far, so good.=C2=A0</div><div>=C2=A0=C2=A0=C2=
=A0Thanks for your help,</div><div>Steven Kingsbury</div><div>BN1</div><div=
><br>On August 3, 2021 at 5:19 PM, Michael Salter via Healeys <<a href=
=3D"mailto:healeys@autox.team.net"; rel=3D"noreferrer noreferrer" target=3D"=
_blank">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 lif=
ters that I installed in my engine with a very low mileage "M" ca=
m have started to deteriorate.=C2=A0<div dir=3D"auto">This engine has had a=
steady diet of VR1 non synthetic and it has had 4 changes in 6K miles.=C2=
=A0</div><div dir=3D"auto">Very disappointing.=C2=A0</div><div dir=3D"auto"=
>I'm=C2=A0 considering trying bucket type Buick lifters with longer pus=
h rods and a new cam.</div><div dir=3D"auto">Does anyone have experience wi=
th the durability of the old Buick lifters ... getting a little desperate h=
ere.</div><div dir=3D"auto">Fortunately I caught this issue before it ruine=
d the engine.</div><div dir=3D"auto"><br></div><div dir=3D"auto">M</div></d=
iv><div><span>_______________________________________________<br>Support <a=
href=3D"http://Team.Net"; rel=3D"noreferrer noreferrer" target=3D"_blank">T=
eam.Net</a> <a href=3D"http://www.team.net/donate.html"; rel=3D"noreferrer n=
oreferrer" target=3D"_blank">http://www.team.net/donate.html</a><br>Suggest=
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ank">http://autox.team.net/mailman/options/healeys/airtightproductions@iclo=
ud.com</a><br><br></span></div></div></blockquote></div></div></blockquote>=
</div>
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<br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
><font color=3D"#3333ff">Best--Michael</font></div>
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