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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">I have installed probably 30 of the 100/4 r=
ear seal conversions. And as long as you follow the instructions it wo=
rks fine. <div>You do have to make sure that you seal the rear center o=
il pan bolt. It goes directly into the rear main drain and if you don=E2=80=99=
t use a copper washer and seal the threads it will leak. And you will blame t=
he rear main seal. <br><br><div dir=3D"ltr"><div>David Nock</div><div><=
br></div>Sent from my iPhone</div><div dir=3D"ltr"><br><blockquote type=3D"c=
ite">On Nov 4, 2023, at 4:57 PM, Michael Oritt <michael.oritt@gmail.com&g=
t; wrote:<br><br></blockquote></div><blockquote type=3D"cite"><div dir=3D"lt=
r">=EF=BB=BF<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"color:#33=
33ff">Michael--</div><div class=3D"gmail_default" style=3D"color:#3333ff"><b=
r></div><div class=3D"gmail_default" style=3D"color:#3333ff">Thanks for your=
input and I am certainly willing to forgo the expense and trouble of having=
a rear seal fit if there is a strong chance of it not being successful.&nbs=
p; </div><div class=3D"gmail_default" style=3D"color:#3333ff">Besides (=
being an aging male) I should probably have the grace to allow my car to hav=
e an occasional drip or two.</div><div class=3D"gmail_default" style=3D"colo=
r:#3333ff"><br></div><div class=3D"gmail_default" style=3D"color:#3333ff">A c=
ouple of questions....</div><div class=3D"gmail_default" style=3D"color:#333=
3ff"><br></div><div class=3D"gmail_default" style=3D"color:#3333ff">Q1--As s=
aid earlier my car does not have a great amount of leakage through the cotte=
r pin in the bell housing, though I do seem to remember that it leaked more a=
fter the engine was freshly rebuilt about 70K miles ago. My oil pressu=
re has also dropped about 10-15 psi from where it was after the rebuild.&nbs=
p; Assuming that a fresh engine will have higher oil pressure will that resu=
lt in higher crankcase pressures which would tend to increase leakage past t=
he scroll seal?</div><div class=3D"gmail_default" style=3D"color:#3333ff"><b=
r></div><div class=3D"gmail_default" style=3D"color:#3333ff">Q2--My car has a=
n early aftermarket valve cover and looks like the ones sold by Ray Juncal m=
inus one fin and with a flat versus a slightly convex top surface. The=
re is no vent nipple and it has a spring-loaded filler cap that probably doe=
s not make a tight seal though there is no oil blow-by. Is there a rea=
l advantage to installing a PCV valve and if so where should the hose t=
erminate? I removed the original LeMans kit CAB some time back and wou=
ld prefer not to refit it.</div><div class=3D"gmail_default" style=3D"color:=
#3333ff"><br></div><div class=3D"gmail_default" style=3D"color:#3333ff">Than=
ks--Michael Oritt </div><div class=3D"gmail_default" style=3D"color:#33=
33ff"> <br></div></div><br><div class=3D"gmail_quote"><div dir=3D=
"ltr" class=3D"gmail_attr">On Sat, Nov 4, 2023 at 4:04=E2=80=AFPM Michael Sa=
lter <<a href=3D"mailto:michaelsalter@gmail.com";>michaelsalter@gmail.com<=
/a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0p=
x 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><di=
v dir=3D"auto">I've fitted a couple of those kits and have been somewhat und=
erwhelmed. <div dir=3D"auto">Firstly you have to be VERY careful with t=
he rear cap machining alignment, definitely a case of measure twice, c=
ut once. I would strongly recommend that the cap is in place on the block fo=
r this operation.</div><div dir=3D"auto">Secondly I was very disappointed to=
find that the designers decided that it was just too much effort to utilize=
the 3 tapped holes already in the block to secure the upper half of the sea=
l holder and instead required that one drill and tap 2 more holes for that p=
urpose. </div><div dir=3D"auto">Thirdly, and I appreciate that there is=
possibly no way around this but, the scroll on the crankshaft has to be mac=
hined off which is something that you should have your crank grinder do when=
the crank is being machined. I did mine in my 8" lathe and it's pretty scar=
y having that huge hunk of steel spinning between centers (don't forget to d=
isable the chuck brake ... rather frightening to notice the chuck winding of=
f the spindle as you power it down=F0=9F=98=B3=F0=9F=98=B3).</div><div dir=3D=
"auto">Finally, after all that effort, there was still a small leak from the=
rear main which I finally resolved by installing my PCV. </div><div di=
r=3D"auto"> kit. <a href=3D"https://precisionsportscar.com/austin-=
healey-100-engine-oil-leak-solution/" target=3D"_blank">https://precisionspo=
rtscar.com/austin-healey-100-engine-oil-leak-solution/</a></div><div dir=3D"=
auto"><br></div><div dir=3D"auto">In future I'm not going to bother with the=
seal kit and just fot the PCV.</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 Fri., Nov. 3, 2023, 11:19 p.m. Michael Oritt, <<a href=3D=
"mailto:michael.oritt@gmail.com"; target=3D"_blank">michael.oritt@gmail.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=
dir=3D"ltr"><div class=3D"gmail_default" style=3D"color:rgb(51,51,255)">I'm=
having my 100's engine done this winter and though it's not a terrible leak=
er I''d like to install a rear seal kit to tighten things up as much as poss=
ible.<br>I know there are several different kits available and would appreci=
ate any input on which one to select along with installation tips.<br><br>Be=
st--Michael Oritt<br></div></div>
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