<html><body>I like the "clackity" sound of my 100...I keep the lifters "loose" so as not to burn a valve seat or push rod, and I did add zinc upon rebuild and also poured it down the PR holes onto the cam prior to startup. My 100 is just 10 cars from Steven's old #598 and that was one original car. These cars will never sound as quite as the 6-cyls.<div><br></div><div>A good source for cam repair is Delta Cams, in Washington state. They will weld up and regrind any damage. Great work and reasonable. Hank #588<br><br><div class="reply-new-signature"></div><p>-----------------------------------------</p>From: "Steven Kingsbury via Healeys" <healeys@autox.team.net><br>To: "Michael Salter"<br>Cc: "healeys@autox.team.net"<br>Sent: Thursday August 5 2021 9:09:39PM<br>Subject: Re: [Healeys] 100 lifters<br><br>
<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, 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 exactly like my old
car. Now when I'm out driving they seem pretty silent and the
engine runs very smooth.</div>
<div> As for "fir" in 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. Nothing appeared
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 through the empty drain pan after transferring the
oil, and again, nothing.</div>
<div> Sorry to hear about your troubles and thank
you for the tips on what to listen for and what to look for. Good
luck with whatever you decide to do. And just to be clear, these
lifters 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 hopefully the cam isn't
completely destroyed and you caught it in time. </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>
<div class="msg-quote">
<div>The first sign of problems was having to adjust the
tappets which had initially been silent after 2000 miles and then
again at 4500.
<div>After adjusting they were still audible and had
previously been silent.</div>
<div>Then at the 2000 and 4000 mile oil changes there
was "fir" in the drain plug magnet.</div>
<div>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.</div>
<div>I'm seriously considering having silicon nitride
lifters manufactured but at over $1000 a set its a serious
investment.</div>
<div><br></div>
<div>M</div>
</div>
<br><div class="gmail_quote">
<div class="gmail_attr" dir="ltr">On Wed., Aug. 4, 2021, 10:47 a.m.
Steven Kingsbury, <<a>airtightproductions@icloud.com</a>>
wrote:<br></div>
<blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;" class="gmail_quote">
<div>
<div>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.</div>
<div> 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.</div>
<div> 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. </div>
<div> Thanks 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>healeys@autox.team.net</a>>
wrote:<br><br></div>
<div>
<blockquote>
<div>
<div>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.
<div>This engine has had a steady diet of VR1 non
synthetic and it has had 4 changes in 6K miles. </div>
<div>Very disappointing. </div>
<div>I'm considering trying bucket type Buick
lifters with longer push rods and a new cam.</div>
<div>Does anyone have experience with the durability of
the old Buick lifters .. getting a little desperate here.</div>
<div>Fortunately I caught this issue before it ruined
the engine.</div>
<div><br></div>
<div>M</div>
</div>
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