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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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>>>
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>>>
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>>
>
> --
> Best--Michael
> _______________________________________________
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--0000000000005f2e3905c9160452
Content-Transfer-Encoding: quoted-printable
<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.</div><=
br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Sat,=
Aug 7, 2021 at 11:11 PM Michael Oritt via Healeys <<a href=3D"mailto:he=
aleys@autox.team.net">healeys@autox.team.net</a>> wrote:<br></div><block=
quote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1=
px 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 ZDD=
P content in motor oils became a commonly talked-about issue in vintage rac=
ing communities, I bought a new race engine for my MGA-powered Elva Courier=
from a reputable builder who recommended=C2=A0I use Mobil 1.=C2=A0 Somewhe=
re 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.=C2=A0=C2=A0</div><div class=3D"gmail_default" style=3D"color:rgb(5=
1,51,255)"><br></div><div class=3D"gmail_default" style=3D"color:rgb(51,51,=
255)">After replacing the cam and lifters I began=C2=A0using RP racing oil =
and throwing in ZDDP additive for good measure.=C2=A0 Though the Royal Purp=
le probably contained sufficient zddp on its own and some folks cautioned=
=C2=A0against too high levels of zinc I have=C2=A0 continued this combinati=
on and have not lost a cam, etc. since.</div><div class=3D"gmail_default" s=
tyle=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" class=3D"gmail_attr">On Thu, Aug 5, 2021 at =
11:16 PM Michael Salter <<a href=3D"mailto:michaelsalter@gmail.com"; targ=
et=3D"_blank">michaelsalter@gmail.com</a>> wrote:<br></div><blockquote c=
lass=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px soli=
d rgb(204,204,204);padding-left:1ex"><div dir=3D"auto">The first sign of pr=
oblems was having to adjust the tappets which had initially been silent aft=
er 2000 miles and then again at 4500.<div dir=3D"auto">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 was "fir" in the=
drain plug magnet.</div><div dir=3D"auto">I'm very disappointed to hav=
e destroyed a very low mileage "M" cam and a set of NOS lifters t=
hat 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 dir=3D"ltr" clas=
s=3D"gmail_attr">On Wed., Aug. 4, 2021, 10:47 a.m. Steven Kingsbury, <<a=
href=3D"mailto:airtightproductions@icloud.com"; target=3D"_blank">airtightp=
roductions@icloud.com</a>> wrote:<br></div><blockquote class=3D"gmail_qu=
ote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,20=
4);padding-left:1ex"><div><div>I just rebuilt my 100 engine and purchased m=
y 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 p=
roblems figured out with my distributor, the car is running well and smooth=
.</div><div>=C2=A0=C2=A0=C2=A0Now I'm wondering when the other shoe is =
going to drop! What problems did you have pointing you to the lifters as th=
e source of those problems? When I retorqued the head, I readjusted the roc=
kers and found no problems. They were a little off, but I expected a little=
.</div><div>=C2=A0=C2=A0=C2=A0What should I be looking for? I used Driven B=
reak In oil and then I switched to VR1 like you after 500 miles. I have bee=
n 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.=C2=A0</div><div>=C2=A0=C2=A0=C2=A0=
Thanks for your help,</div><div>Steven Kingsbury</div><div>BN1</div><div><b=
r>On August 3, 2021 at 5:19 PM, Michael Salter via Healeys <<a href=3D"m=
ailto:healeys@autox.team.net" rel=3D"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 lifters that I inst=
alled in my engine with a very low mileage "M" cam have started t=
o 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 co=
nsidering trying bucket type Buick lifters with longer push rods and a new =
cam.</div><div dir=3D"auto">Does anyone have experience with the durability=
of the old Buick lifters ... getting a little desperate here.</div><div di=
r=3D"auto">Fortunately I caught this issue before it ruined the engine.</di=
v><div dir=3D"auto"><br></div><div dir=3D"auto">M</div></div><div><span>___=
____________________________________________<br>Support <a href=3D"http://T=
eam.Net" rel=3D"noreferrer" target=3D"_blank">Team.Net</a> <a href=3D"http:=
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</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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