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With this pool of collected stories and knowledge at our fingertips, we ALL=
end up sleeping better!
Stephen, BJ8
From: Michael Salter <michaelsalter@gmail.com>
To: richard mayor <boyracer466@gmail.com>=20
Cc: healeys <healeys@autox.team.net>
Sent: Friday, September 2, 2016 8:36 AM
Subject: Re: [Healeys] Oil pressure in a BJ8
=20
Hi Richard, thank you so much for your post it solved for me a longstanding=
Healey mystery!!
In the early '80s we had an elderly customer bring in a low mileage BN4 tha=
t had lost all oil pressure.=20
We found exactly the symptoms that you describe but I never knew the the ca=
use..=20
As I recall we installed a new cam and oil pump to resolve the problem but =
I had always wondered why it had happened to this carefully driven low mile=
age engine..
I'll sleep better tonight :-)
Michael S
BN1 #174
On Thu, Sep 1, 2016 at 9:30 PM, richard mayor <boyracer466@gmail.com> wrote=
:
Chris,
I hate to be negative about your good oil pressure but I fear you may have =
a problem.=C2=A0 I am assuming that you have the "high pressure" oil pump f=
rom DW.
Based upon that assumption, I can tell you that it is the rotary style of p=
ump that was used on the 100-6 engines. There were many problems with this =
pump.=C2=A0 It has a very large capacity and as such it results in a lot of=
friction, or back pressure in the system. Namely, it put stress on the cam=
shaft gear, the driving spindle gear, the timing chain and the camshaft thr=
ust plate.=C2=A0 This was a common problem with the early 100-6 motors.=C2=
=A0 One fix was to machine an oil grove in one side of the the trust plate.=
Then an oil groove on both sides. Then a bronze thrust plate with oil groo=
ves.=C2=A0 Timing chains stretched.=C2=A0 Cam and driving spindle gears rec=
eived excessive wear.=C2=A0 That is why the switch was made to the gear sty=
le pump.
The rotary style of pump is actually a very good design. Nissan used it in =
the Z car motors but it was 2/3rd the size of the Healey pump so there was =
much less back pressure.=C2=A0=20
Many of us racers have used the DW "high pressure" oil pumps and discovered=
that at some point, all of the teeth on the cam and driving spindles have =
been ground off to such an extent that we have lost all oil pressure.=C2=A0=
On a shelf with my "offerings to the god of speed" I have a camshaft thrus=
t plate that has a groove that has been ground into it almost=C2=A0 1/8th o=
f an inch from the resistance of the oil pump forcing the camshaft into the=
trust plate. I am sad to admit that it took me the loss of 2 race motors t=
o finally grasp why this was happening and before I switched back to the 30=
00 gear style pump .
Jeff Jonk did an excellent article about these pumps and the damage they ca=
use in the Healey Marque publication about 10 years ago.
Richard
On Tue, Aug 30, 2016 at 3:53 AM, Chris Dimmock <austin.healey@gmail.com> wr=
ote:
Hi all,
Recently someone asked about oil pressures, and the oil being used.
My BJ8 engine was totally rebuilt in 1998.
Today, my wife and I went for a drive up the M1 motorway and I kept an eye =
on oil pressure. Water temp was 185 degrees all the time. Air temp was ~22 =
degrees Celcius.
Lovely day for a drive to the Hunter Valley!
Hot idle. After 70 minutes at ~70 mph, idle @ 850 - 900rpm =3D 40 lbs.
Oil pressure at 2,000 rpm hot driving =3D 50 lbs
3,000 - 5,000 rpm hot oil pressure =3D 60 lbs.
My wife said we wouldn't make our 3rd wedding anniversary if I pulled 6,000=
in overdrive top..... ;-)
Denis Welch oil pump.
Fresh Penrite HPR 40 oil and filter last weekend.
Draw your own conclusions. Mine are:
the thermostat is perfect, and
so is the oil pressure relief valve.
Best
Chris
______________________________ _________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/ listinfo/healeys
466@gm ail.com
______________________________ _________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/ listinfo/healeys
alter@ gmail.com
--=20
If you can't fix it with a hammer, you've got an electrical problem.
_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
gs@rogers.com
=20
------=_Part_317922_1970027596.1472823321069
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<html><head></head><body><div style=3D"color:#000; background-color:#fff; f=
ont-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, =
sans-serif;font-size:16px"><div id=3D"yui_3_16_0_ym19_1_1472822765182_9547"=
>With this pool of collected stories and knowledge at our fingertips, we AL=
L end up sleeping better!</div><div id=3D"yui_3_16_0_ym19_1_1472822765182_9=
548"><br></div><div id=3D"yui_3_16_0_ym19_1_1472822765182_9549">Stephen, BJ=
8<br></div><div id=3D"yui_3_16_0_ym19_1_1472822765182_9336"><span></span></=
div><div id=3D"yui_3_16_0_ym19_1_1472822765182_9337" class=3D"qtdSeparateBR=
"><br><br></div><div style=3D"display: block;" id=3D"yui_3_16_0_ym19_1_1472=
822765182_9553" class=3D"yahoo_quoted"> <div id=3D"yui_3_16_0_ym19_1_14728=
22765182_9552" style=3D"font-family: HelveticaNeue, Helvetica Neue, Helveti=
ca, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id=3D"yui_3_1=
6_0_ym19_1_1472822765182_9551" style=3D"font-family: HelveticaNeue, Helveti=
ca Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <d=
iv id=3D"yui_3_16_0_ym19_1_1472822765182_9550" dir=3D"ltr"> <font id=3D"yui=
_3_16_0_ym19_1_1472822765182_9554" face=3D"Arial" size=3D"2"> <hr size=3D"1=
"> <b><span style=3D"font-weight:bold;">From:</span></b> Michael Salter <=
;michaelsalter@gmail.com><br> <b><span style=3D"font-weight: bold;">To:<=
/span></b> richard mayor <boyracer466@gmail.com> <br><b><span style=
=3D"font-weight: bold;">Cc:</span></b> healeys <healeys@autox.team.net&g=
t;<br> <b><span style=3D"font-weight: bold;">Sent:</span></b> Friday, Septe=
mber 2, 2016 8:36 AM<br> <b><span style=3D"font-weight: bold;">Subject:</sp=
an></b> Re: [Healeys] Oil pressure in a BJ8<br> </font> </div> <div id=3D"y=
ui_3_16_0_ym19_1_1472822765182_9555" class=3D"y_msg_container"><br><div id=
=3D"yiv6123007469"><div id=3D"yui_3_16_0_ym19_1_1472822765182_9558"><div id=
=3D"yui_3_16_0_ym19_1_1472822765182_9557" dir=3D"ltr"><div id=3D"yui_3_16_0=
_ym19_1_1472822765182_9556" class=3D"yiv6123007469gmail_default" style=3D"f=
ont-family:comic sans ms, sans-serif;font-size:small;">Hi Richard, thank yo=
u so much for your post it solved for me a longstanding Healey mystery!!<br=
clear=3D"none"></div><div class=3D"yiv6123007469gmail_default" style=3D"fo=
nt-family:comic sans ms, sans-serif;font-size:small;">In the early '80s we =
had an elderly customer bring in a low mileage BN4 that had lost all oil pr=
essure. <br clear=3D"none"></div><div id=3D"yui_3_16_0_ym19_1_1472822765182=
_9559" class=3D"yiv6123007469gmail_default" style=3D"font-family:comic sans=
ms, sans-serif;font-size:small;">We found exactly the symptoms that you de=
scribe but I never knew the the cause.. <br clear=3D"none"></div><div id=3D=
"yui_3_16_0_ym19_1_1472822765182_9560" class=3D"yiv6123007469gmail_default"=
style=3D"font-family:comic sans ms, sans-serif;font-size:small;">As I reca=
ll we installed a new cam and oil pump to resolve the problem but I had alw=
ays wondered why it had happened to this carefully driven low mileage engin=
e..<br clear=3D"none"></div><div id=3D"yui_3_16_0_ym19_1_1472822765182_9561=
" class=3D"yiv6123007469gmail_default" style=3D"font-family:comic sans ms, =
sans-serif;font-size:small;">I'll sleep better tonight :-)<br clear=3D"none=
"></div><div id=3D"yui_3_16_0_ym19_1_1472822765182_9562" class=3D"yiv612300=
7469gmail_default" style=3D"font-family:comic sans ms, sans-serif;font-size=
:small;">Michael S<br clear=3D"none"></div><div id=3D"yui_3_16_0_ym19_1_147=
2822765182_9563" class=3D"yiv6123007469gmail_default" style=3D"font-family:=
comic sans ms, sans-serif;font-size:small;">BN1 #174<br clear=3D"none"></di=
v></div><div id=3D"yui_3_16_0_ym19_1_1472822765182_9564" class=3D"yiv612300=
7469gmail_extra"><br clear=3D"none"><div id=3D"yui_3_16_0_ym19_1_1472822765=
182_9565" class=3D"yiv6123007469gmail_quote">On Thu, Sep 1, 2016 at 9:30 PM=
, richard mayor <span dir=3D"ltr"><<a rel=3D"nofollow" shape=3D"rect" ym=
ailto=3D"mailto:boyracer466@gmail.com"; target=3D"_blank" href=3D"mailto:boy=
racer466@gmail.com">boyracer466@gmail.com</a>></span> wrote:<br clear=3D=
"none"><blockquote id=3D"yui_3_16_0_ym19_1_1472822765182_9570" class=3D"yiv=
6123007469gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc soli=
d;padding-left:1ex;"><div class=3D"yiv6123007469yqt0239697204" id=3D"yiv612=
3007469yqt88292"><div id=3D"yui_3_16_0_ym19_1_1472822765182_9569" dir=3D"lt=
r"><div id=3D"yui_3_16_0_ym19_1_1472822765182_9568"><div id=3D"yui_3_16_0_y=
m19_1_1472822765182_9567"><div id=3D"yui_3_16_0_ym19_1_1472822765182_9566">=
Chris,<br clear=3D"none"><br clear=3D"none"></div>I hate to be negative abo=
ut your good oil pressure but I fear you may have a problem. I am ass=
uming that you have the "high pressure" oil pump from DW.<br clear=3D"none"=
><br clear=3D"none">Based upon that assumption, I can tell you that it is t=
he rotary style of pump that was used on the 100-6 engines. There were many=
problems with this pump. It has a very large capacity and as such it=
results in a lot of friction, or back pressure in the system. Namely, it p=
ut stress on the camshaft gear, the driving spindle gear, the timing chain =
and the camshaft thrust plate. This was a common problem with the ear=
ly 100-6 motors. One fix was to machine an oil grove in one side of t=
he the trust plate. Then an oil groove on both sides. Then a bronze thrust =
plate with oil grooves. Timing chains stretched. Cam and drivin=
g spindle gears received excessive wear. That is why the switch was m=
ade to the gear style pump.<br clear=3D"none"><br clear=3D"none">The rotary=
style of pump is actually a very good design. Nissan used it in the Z car =
motors but it was 2/3rd the size of the Healey pump so there was much less =
back pressure. <br clear=3D"none"><br clear=3D"none"></div>Many of us=
racers have used the DW "high pressure" oil pumps and discovered that at s=
ome point, all of the teeth on the cam and driving spindles have been groun=
d off to such an extent that we have lost all oil pressure. On a shel=
f with my "offerings to the god of speed" I have a camshaft thrust plate th=
at has a groove that has been ground into it almost 1/8th of an inch =
from the resistance of the oil pump forcing the camshaft into the trust pla=
te. I am sad to admit that it took me the loss of 2 race motors to finally =
grasp why this was happening and before I switched back to the 3000 gear st=
yle pump .<br clear=3D"none"><br clear=3D"none"></div><div>Jeff Jonk did an=
excellent article about these pumps and the damage they cause in the Heale=
y Marque publication about 10 years ago.<br clear=3D"none"><br clear=3D"non=
e"></div><div></div>Richard<br clear=3D"none"><div><div><br clear=3D"none">=
<div><div class=3D"yiv6123007469gmail_extra"><div class=3D"yiv6123007469gma=
il_quote"><span class=3D"yiv6123007469">On Tue, Aug 30, 2016 at 3:53 AM, Ch=
ris Dimmock <span dir=3D"ltr"><<a rel=3D"nofollow" shape=3D"rect" ymailt=
o=3D"mailto:austin.healey@gmail.com"; target=3D"_blank" href=3D"mailto:austi=
n.healey@gmail.com">austin.healey@gmail.com</a>></span> wrote:<br clear=
=3D"none"></span><blockquote class=3D"yiv6123007469gmail_quote" style=3D"ma=
rgin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><span class=
=3D"yiv6123007469">Hi all,<br clear=3D"none">
Recently someone asked about oil pressures, and the oil being used.<br clea=
r=3D"none">
<br clear=3D"none">
My BJ8 engine was totally rebuilt in 1998.<br clear=3D"none">
Today, my wife and I went for a drive up the M1 motorway and I kept an eye =
on oil pressure. Water temp was 185 degrees all the time. Air temp was ~22 =
degrees Celcius.<br clear=3D"none">
Lovely day for a drive to the Hunter Valley!<br clear=3D"none">
<br clear=3D"none">
Hot idle. After 70 minutes at ~70 mph, idle @ 850 - 900rpm =3D 40 lbs.<br c=
lear=3D"none">
Oil pressure at 2,000 rpm hot driving =3D 50 lbs<br clear=3D"none">
3,000 - 5,000 rpm hot oil pressure =3D 60 lbs.<br clear=3D"none">
My wife said we wouldn't make our 3rd wedding anniversary if I pulled 6,000=
in overdrive top..... ;-)<br clear=3D"none">
Denis Welch oil pump.<br clear=3D"none">
Fresh Penrite HPR 40 oil and filter last weekend.<br clear=3D"none">
Draw your own conclusions. Mine are:<br clear=3D"none">
the thermostat is perfect, and<br clear=3D"none">
so is the oil pressure relief valve.<br clear=3D"none">
Best<br clear=3D"none">
Chris<br clear=3D"none">
<br clear=3D"none">
______________________________ _________________<br clear=3D"none">
=3D"http://www.team.net/donate.html";>http://www.team.net/donate.htm l</a><b=
r clear=3D"none">
Archive: <a rel=3D"nofollow" shape=3D"rect" target=3D"_blank" href=3D"http:=
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Forums: <a rel=3D"nofollow" shape=3D"rect" target=3D"_blank" href=3D"http:/=
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<br clear=3D"none">
<a rel=3D"nofollow" shape=3D"rect" ymailto=3D"mailto:Healeys@autox.team.net=
" target=3D"_blank" href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.te=
am.net</a><br clear=3D"none">
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eam.net/mailman/listinfo/healeys">http://autox.team.net/mailman/ listinfo/h=
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ef=3D"http://autox.team.net/mailman/options/healeys/boyracer466@gmail.com";>=
http://autox.team.net/mailman/ options/healeys/boyracer466@gm ail.com</a><b=
r clear=3D"none">
<br clear=3D"none">
</blockquote></div><br clear=3D"none"></div></div></div></div></div></div>
<br clear=3D"none">______________________________ _________________<br clea=
r=3D"none">
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<a rel=3D"nofollow" shape=3D"rect" ymailto=3D"mailto:Healeys@autox.team.net=
" target=3D"_blank" href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.te=
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<br clear=3D"none">
<br clear=3D"none"></blockquote></div><br clear=3D"none"><br clear=3D"all">=
<br clear=3D"none">-- <br clear=3D"none"><div class=3D"yiv6123007469gmail_s=
ignature"><div dir=3D"ltr"><div><div dir=3D"ltr"><i><font size=3D"2"><span =
style=3D"color:black;">If you can't fix it with a hammer, you've got an ele=
ctrical problem.</span></font></i><br clear=3D"none"><br clear=3D"none"><di=
v></div><div></div><div></div></div></div></div></div>
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_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
--===============2106367102653588728==--
|