Subject: Re: [Healeys] Rebuilt Engine Compression

From: Hank Leach via Healeys <[email-masked]>
Date: Wed, 19 Jul 2023 16:32:51 +0000 boundary="=_2f4d977fcf379d78e0c57d6670fb1136" Ie9jWLB0BXRVkVgOPoCRR5vUzFoZ82zGbk91NgjdREHZ6kHpHfn827YvL1DlGKc8+uTr4MRCQckJb5OCBySanai0qOjrCFKkp7k=

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Patrick-was the issue then the placement of the crankshaft gear in=0Arel=
ation to the camshaft sprocket?If so, do not feel bad-this is a=0Acommon=
 problem and the markings on the gears are not well done. It was=0Ahowev=
er the most sensible conclusion that we guessed when compression=0Awas s=
o low-valves not matching piston position.=0AUnfortunate that this had t=
o happen to a BN3 install with a shoehorned=0AC block sandwiched in ther=
e.My hats off to you for your committed=0Aefforts! It must have been sli=
ghtly more difficult than this one=0A(photo) Hank=0A=0A=09--------------=
---------------------------From: "Patrick and Caroline=0AQuinn via Heale=
ys" =0ATo: "[email-masked]"=0ACc: =0ASent: Wednesday July 19 202=
3 4:15:03AM=0ASubject: Re: [Healeys] Rebuilt Engine Compression=0A=0A=09=
G=E2=80=99day =0A=0A=09Most will remember from about a month back, that=
 no matter what was=0Adone, the newly rebuilt early six-cylinder engine=
 of the BN3 refused=0Ato start. New points, condenser, etc etc didn=E2=
=80=99t help. We even towed=0Athe car up and down our very quiet road an=
d all we managed to achieve=0Awas 65lbs oil pressure. The cylinder compr=
ession for each cylinder was=0Abetween 0 and 5lbs. =0A=0A=09Needless to=
 say, there was much scratching of heads, but to no avail.=0A=0A=0A=09So=
 the car was winched on to a trailer and taken away to a friend=E2=80=99=
s=0Aplace for some serious fettling. However beforehand I removed the=0A=
radiator, water pump, hoses and so on. This is no mean feat in the BN3=
=0Aas most of the radiator (actually the same design as in our Healey=0A=
Duncan) sits under the shroud with only the rear of the header tank=0Asi=
tting out into the engine bay. =0A=0A=09As many said, it had to be the t=
iming, meaning that the timing cover=0Awas to be removed. We had visions=
 of removing the carburettors,=0Aexhaust manifolds, engine mounts so tha=
t the engine could be tilted to=0Again access to the crankshaft pully nu=
t. But no, as for once there was=0Aa real plus in having a DHMC car as a=
part from a single horizontal bar=0Abetween the radiator and the engine,=
 the cross braces and everything=0Aelse was removed to fit the six-cylin=
der. Even the horizontal bar has=0Abeen cut away so that the shortened f=
an blades fit. =0A=0A=09The crankshaft nut came away, as did the harmoni=
c balancer and the=0Atiming cover. =0A=0A=09The nice, pretty and new ver=
nier timing chain was fitted incorrectly.=0ADon=E2=80=99t ask me how as=
 it remains a mystery. Everything back together,=0Aexcept for the radiat=
or and its compatriots. Tickle the chokes, pull=0Athe throttle and press=
 the solenoid button. Bruum! Away it went. =0A=0A=09Since then the cooli=
ng bits have been reinstalled and flushed,=0Atappets done and the engine=
 runs very smoothly due to the $$$ spent on=0Abalancing. Next is a littl=
e panel work and my recommendation is to=0Anever try and squeeze a six-c=
ylinder engine through a 100 bonnet=0Aopening. =0A=0A=09Many thanks to e=
veryone who responded. =0A=0A=09Hoo Roo =0A=0A=09Patrick Quinn =0A=0A=09=
Blue Mountains, Australia =0A=0A=09FROM: Patrick and Caroline Quinn=0ASE=
NT: Monday, June 12, 2023 3:41 PM=0ATO: [email-masked]=0ASUBJECT=
: Rebuilt Engine Compression   =0A=0A=09Hello =0A=0A=09No amount of chur=
ning over with a new battery will induce the BN3=E2=80=99s=0Arebuilt eng=
ine to fire. Even towing the car up and down the road=0Afailed to instil=
l any life into the engine. =0A=0A=09Everything is spot on =E2=80=93 tim=
ing, spark and fuel. =0A=0A=09Anyone have an idea as to what the compres=
sion be on a rebuilt engine=0Ashould be? =0A=0A=09Many thanks =0A=0A=09P=
atrick Quinn =0A=0A=09Blue Mountains, Australia

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<html><body>Patrick-was the issue then the placement of the crankshaft g=
ear in relation to the camshaft sprocket?<div>If so, do not feel bad-thi=
s is a common problem and the markings on the gears are not well done. I=
t was however the most sensible conclusion that we guessed when compress=
ion was so low-valves not matching piston position.</div><div><br></div>=
<div>Unfortunate that this had to happen to a BN3 install with a shoehor=
ned C block sandwiched in there.</div><div>My hats off to you for your c=
ommitted efforts! It must have been slightly more difficult than this on=
e (photo) Hank<br><br><div class=3D"reply-new-signature"></div><p>------=
-----------------------------------</p>From: "Patrick and Caroline Quinn=
 via Healeys" <[email-masked]><br>To: "[email-masked]"<b=
r>Cc: <br>Sent: Wednesday July 19 2023 4:15:03AM<br>Subject: Re: [Healey=
s] Rebuilt Engine Compression<br><br>=0A<div class=3D"WordSection1">=0A<=
p class=3D"MsoNormal">G=E2=80=99day</p>=0A<p class=3D"MsoNormal">&nbsp;<=
/p>=0A<p class=3D"MsoNormal">Most will remember from about a month back,=
=0Athat no matter what was done, the newly rebuilt early six-cylinder=0A=
engine of the BN3 refused to start. New points, condenser, etc etc=0Adid=
n=E2=80=99t help. We even towed the car up and down our very quiet road=
=0Aand all we managed to achieve was 65lbs oil pressure. The cylinder=0A=
compression for each cylinder was between 0 and 5lbs.</p>=0A<p class=3D"=
MsoNormal">&nbsp;</p>=0A<p class=3D"MsoNormal">Needless to say, there wa=
s much scratching of=0Aheads, but to no avail.</p>=0A<p class=3D"MsoNorm=
al">&nbsp;</p>=0A<p class=3D"MsoNormal">So the car was winched on to a t=
railer and=0Ataken away to a friend=E2=80=99s place for some serious fet=
tling. However=0Abeforehand I removed the radiator, water pump, hoses an=
d so on.=0AThis is no mean feat in the BN3 as most of the radiator (actu=
ally=0Athe same design as in our Healey Duncan) sits under the shroud wi=
th=0Aonly the rear of the header tank sitting out into the engine=0Abay.=
</p>=0A<p class=3D"MsoNormal">&nbsp;</p>=0A<p class=3D"MsoNormal">As man=
y said, it had to be the timing, meaning=0Athat the timing cover was to=
 be removed. We had visions of removing=0Athe carburettors, exhaust mani=
folds, engine mounts so that the=0Aengine could be tilted to gain access=
 to the crankshaft pully nut.=0ABut no, as for once there was a real plu=
s in having a DHMC car as=0Aapart from a single horizontal bar between t=
he radiator and the=0Aengine, the cross braces and everything else was r=
emoved to fit the=0Asix-cylinder. Even the horizontal bar has been cut a=
way so that the=0Ashortened fan blades fit.</p>=0A<p class=3D"MsoNormal"=
>&nbsp;</p>=0A<p class=3D"MsoNormal">The crankshaft nut came away, as di=
d the=0Aharmonic balancer and the timing cover.</p>=0A<p class=3D"MsoNor=
mal">&nbsp;</p>=0A<p class=3D"MsoNormal">The nice, pretty and new vernie=
r timing chain=0Awas fitted incorrectly. Don=E2=80=99t ask me how as it=
 remains a mystery.=0AEverything back together, except for the radiator=
 and its=0Acompatriots. Tickle the chokes, pull the throttle and press t=
he=0Asolenoid button. Bruum! Away it went.</p>=0A<p class=3D"MsoNormal">=
&nbsp;</p>=0A<p class=3D"MsoNormal">Since then the cooling bits have bee=
n=0Areinstalled and flushed, tappets done and the engine runs very=0Asmo=
othly due to the $$$ spent on balancing. Next is a little panel=0Awork a=
nd my recommendation is to never try and squeeze a=0Asix-cylinder engine=
 through a 100 bonnet opening.</p>=0A<p class=3D"MsoNormal">&nbsp;</p>=
=0A<p class=3D"MsoNormal">Many thanks to everyone who responded.</p>=0A<=
p class=3D"MsoNormal">&nbsp;</p>=0A<p class=3D"MsoNormal">Hoo Roo</p>=0A=
<p class=3D"MsoNormal">&nbsp;</p>=0A<p class=3D"MsoNormal">Patrick Quinn=
</p>=0A<p class=3D"MsoNormal">Blue Mountains, Australia</p>=0A<p class=
=3D"MsoNormal">&nbsp;</p>=0A<div>=0A<div style=3D"border:none;border-top=
:solid #E1E1E1 1pt;padding:3pt 0cm 0cm 0cm;">=0A<p class=3D"MsoNormal"><=
b><span lang=3D"en-us">From:</span></b>=0A<span lang=3D"en-us">Patrick a=
nd=0ACaroline Quinn<br><b>Sent:</b> Monday, June 12, 2023 3:41 PM<br><b>=
To:</b> [email-masked]<br><b>Subject:</b> Rebuilt Engine Compres=
sion</span></p>=0A</div>=0A</div>=0A<p class=3D"MsoNormal">&nbsp;</p>=0A=
<p class=3D"MsoNormal">Hello</p>=0A<p class=3D"MsoNormal">&nbsp;</p>=0A<=
p class=3D"MsoNormal">No amount of churning over with a new battery=0Awi=
ll induce the BN3=E2=80=99s rebuilt engine to fire. Even towing the car=
=0Aup and down the road failed to instill any life into the=0Aengine.</p=
>=0A<p class=3D"MsoNormal">&nbsp;</p>=0A<p class=3D"MsoNormal">Everythin=
g is spot on =E2=80=93 timing, spark and=0Afuel.</p>=0A<p class=3D"MsoNo=
rmal">&nbsp;</p>=0A<p class=3D"MsoNormal">Anyone have an idea as to what=
 the compression=0Abe on a rebuilt engine should be?</p>=0A<p class=3D"M=
soNormal">&nbsp;</p>=0A<p class=3D"MsoNormal">Many thanks</p>=0A<p class=
=3D"MsoNormal">&nbsp;</p>=0A<p class=3D"MsoNormal">Patrick Quinn</p>=0A<=
p class=3D"MsoNormal">Blue Mountains, Australia</p>=0A</div>=0A</healeys=
@autox.team.net></div></body></html>

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