Subject: [Healeys] Radiator cap for BN2

From: Bob Spidell <[email-masked]>
Date: Sun, 17 Jul 2022 18:10:38 -0700

I see both 4psi and 7psi mentioned; any issues going with the higher 
pressure cap?

TIA
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From: Henry G Leach via Healeys <[email-masked]>
Date: Mon, 18 Jul 2022 01:54:31 +0000 WpL9aAyprCW/Fo/bsjBTQgY+5dfwmv7DXbSoHFZ0rg566LlbZZAyh14f43r+g82wo3mFS+PCyOns259gAuEp5stzkuJUQrpU+WU=

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Oh, yea! I recommend do not use a 15 lb. cap-worked on a 100-6 with=0Abl=
own freeze plugs as a result of the 15pounder. Early 100s used a 4=0Alb.=
 cap, but the later (BN2) cars went to 7 lb. (each additional pound=0Agi=
ves higher temp tolerance, but too much of a good thing is bad.=0AThere=
 is always the head gasket to consider as well. Hank=0A=0A=09-----------=
------------------------------From: "Bob Spidell" =0ATo: "Healeys"=0ACc:=
 =0ASent: Sunday July 17 2022 6:27:46PM=0ASubject: [Healeys] Radiator ca=
p for BN2=0A=0A I see both 4psi and 7psi mentioned; any issues going wit=
h the higher=0A pressure cap?=0A=0A TIA=0A _____________________________=
__________________=0A Support Team.Net http://www.team.net/donate.html=
=0A /> Suggested annual donation $12.75=0A=0A Archive: http://www.team.n=
et/pipermail/healeys [1]=0Ahttp://autox.team.net/archive/healeys=0A />=
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s/healeys/[email-masked]=0A />=0A =0A=0ALinks:=0A------=0A[1] http:=
//www.team.net/pipermail/healeys=0A

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<html><body>Oh, yea! I recommend do not use a 15 lb. cap-worked on a 100=
-6 with blown freeze plugs as a result of the 15pounder. Early 100s used=
 a 4 lb. cap, but the later (BN2) cars went to 7 lb. (each additional po=
und gives higher temp tolerance, but too much of a good thing is bad. Th=
ere is always the head gasket to consider as well.&nbsp; Hank<br><br><di=
v class=3D"reply-new-signature"></div><p>-------------------------------=
----------</p>From: "Bob Spidell" <[email-masked]><br>To: "Healeys=
"<br>Cc: <br>Sent: Sunday July 17 2022 6:27:46PM<br>Subject: [Healeys] R=
adiator cap for BN2<br><br>=0AI see both 4psi and 7psi mentioned; any is=
sues going with the=0Ahigher<br>=0Apressure cap?<br><br>=0ATIA<br>=0A___=
____________________________________________<br>=0ASupport Team.Net <a h=
ref=3D"http://www.team.net/donate.html%3Cbr">http://www.team.net/donate.=
html<br>=0A/&gt; Suggested annual donation $12.75<br><br>=0AArchive:</a>=
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x.team.net<br></a> <a href=3D"http://autox.team.net/mailman/listinfo/hea=
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cast.net></body></html>

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From: Henry G Leach via Healeys <[email-masked]>
Date: Mon, 18 Jul 2022 17:06:23 +0000 V/pbdx4iGDbnqz022t4dp0WBLqhKep5utT1OQz1V2ksd1pZBYbBXVeZgvhLE2xXFNV7LME2JDq4LIH1Ki216Jiwbcitb7W9Y1o1wnC4WEaEDAH/w1y5lq3Ar a551SPCqpwGmLMK+P0igwQ==

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Ok-at least three reasons to not go higher than 7 lbs.:=0A1- Weak link h=
eater core element2- Spring rate in water pump at max3-=0Afreeze plugs w=
ill pop under higher pressure=0AConsider the precarious condition of the=
 100 head gasket and the fact=0Athat 7lbs. will keep a properly maintain=
ed cooling system at=0Afunctional temperature...and the book says use 7l=
bs., so the=0Aconclusion is stick to the specs supplied by the manufactu=
rer.=0AKeep the 15lb. caps on cars specified for their use (like most US=
) and=0Adon't let your 100 overheat due to poor cooling system maintaine=
ce.=0AThat should make up your mind Bob, as to which cap to use. Good in=
put=0Afrom the field! Hank=0A=0A=09-------------------------------------=
----From: "Michael Salter" =0ATo: "john harper"=0ACc: "Hank Leach", "Hea=
leys"=0ASent: Monday July 18 2022 5:11:58AM=0ASubject: Re: [Healeys] Rad=
iator cap for BN2=0A=0A Actually, in my experience, the biggest problem=
 wirh exceeding 7=0Ap.s.i. is the water pump seal. They will typically s=
tart to leak at=0Aaround 10 - 12 p.s.i. =0A M  =0A On Mon., Jul. 18, 202=
2, 6:04 a.m. john harper,  wrote:=0A  Henry =0A I would not use a cap hi=
gher than 7psi because of core plugs as=0Aalready stated but because the=
 heater core on the BN1/2 may not stand=0Athe higher pressure.  =0A On M=
on, 18 Jul 2022 at 03:11, Henry G Leach via Healeys  wrote:=0A  Oh, yea!=
 I recommend do not use a 15 lb. cap-worked on a 100-6 with=0Ablown free=
ze plugs as a result of the 15pounder. Early 100s used a 4=0Alb. cap, bu=
t the later (BN2) cars went to 7 lb. (each additional pound=0Agives high=
er temp tolerance, but too much of a good thing is bad.=0AThere is alway=
s the head gasket to consider as well. Hank=0A=0A=09--------------------=
--------------------- From: "Bob Spidell"=0A To: "Healeys"=0A Cc:=0A Sen=
t: Sunday July 17 2022 6:27:46PM=0A Subject: [Healeys] Radiator cap for=
 BN2=0A=0A I see both 4psi and 7psi mentioned; any issues going with the=
 higher=0A pressure cap?=0A=0A TIA=0A __________________________________=
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]=0A /> Suggested annual donation $12.75=0A=0A Archive:  [3]http://www.t=
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<html><body>Ok-at least three reasons to not go higher than 7 lbs.:<div>=
<br></div><div>1- Weak link heater core element</div><div>2- Spring rate=
 in water pump at max</div><div>3- freeze plugs will pop under higher pr=
essure</div><div><br></div><div>Consider the precarious condition of the=
 100 head gasket and the fact that 7lbs. will keep a properly maintained=
 cooling system at functional temperature...and the book says use 7lbs.,=
 so the conclusion is stick to the specs supplied by the manufacturer.</=
div><div><br></div><div>Keep the 15lb. caps on cars specified for their=
 use (like most US) and don't let your 100 overheat due to poor cooling=
 system maintainece. That should make up your mind Bob, as to which cap=
 to use. Good input from the field!&nbsp; Hank<br><br><div class=3D"repl=
y-new-signature"></div><p>-----------------------------------------</p>F=
rom: "Michael Salter" <[email-masked]><br>To: "john harper"<br>=
Cc: "Hank Leach", "Healeys"<br>Sent: Monday July 18 2022 5:11:58AM<br>Su=
bject: Re: [Healeys] Radiator cap for BN2<br><br>=0A<div>Actually, in my=
 experience, the biggest problem=0Awirh exceeding 7 p.s.i. is the water=
 pump seal. They will typically=0Astart to leak at around 10 - 12 p.s.i.=
=0A<div><br></div>=0A<div>M</div>=0A</div>=0A<br><div class=3D"gmail_quo=
te">=0A<div dir=3D"ltr" class=3D"gmail_attr">On Mon., Jul. 18, 2022, 6:0=
4 a.m.=0Ajohn harper, &lt;<a>[email-masked]</a>&gt;=0Awrote:<br></d=
iv>=0A<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;borde=
r-left:1px #ccc solid;padding-left:1ex;">=0A<div dir=3D"ltr">Henry=0A<di=
v><br></div>=0A<div>I would not use a cap higher than 7psi because of co=
re plugs=0Aas already stated but because&nbsp;the heater&nbsp;core on th=
e=0ABN1/2 may not stand the higher pressure.</div>=0A</div>=0A<br><div c=
lass=3D"gmail_quote">=0A<div dir=3D"ltr" class=3D"gmail_attr">On Mon, 18=
 Jul 2022 at 03:11,=0AHenry G Leach via Healeys &lt;<a>[email-masked]=
m.net</a>&gt; wrote:<br></div>=0A<blockquote class=3D"gmail_quote" style=
=3D"margin:0px 0px 0px .8ex;border-left:1px solid rgb(204,204,204);paddi=
ng-left:1ex;">=0A<div>Oh, yea! I recommend do not use a 15 lb. cap-worke=
d on a 100-6=0Awith blown freeze plugs as a result of the 15pounder. Ear=
ly 100s=0Aused a 4 lb. cap, but the later (BN2) cars went to 7 lb. (each=
=0Aadditional pound gives higher temp tolerance, but too much of a=0Agoo=
d thing is bad. There is always the head gasket to consider as=0Awell.&n=
bsp; Hank<br><br><p>-----------------------------------------</p>=0AFrom=
: "Bob Spidell"<br>=0ATo: "Healeys"<br>=0ACc:<br>=0ASent: Sunday July 17=
 2022 6:27:46PM<br>=0ASubject: [Healeys] Radiator cap for BN2<br><br>=0A=
I see both 4psi and 7psi mentioned; any issues going with the=0Ahigher<b=
r>=0Apressure cap?<br><br>=0ATIA<br>=0A_________________________________=
______________<br>=0ASupport Team.Net <a href=3D"http://www.team.net/don=
ate.html%3Cbr"></a><a href=3D"http://www.team.net/donate.html">http://ww=
w.team.net/donate.html</a><br>=0A/&gt; Suggested annual donation $12.75<=
br><br>=0AArchive: <a href=3D"http://www.team.net/pipermail/healeys"></a=
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