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Yes you can install a light flywheel or a 6 cylinder flywheel in BN1 =
with a 3 speed. But you CAN NOT use the later 6 cylinder style clutch =
cover. The cover will hit the bell housing and stop the engine from =
turning. =E2=80=98
The best answer is to use the 3 speed cover on the light flywheel.
David Nock
British Car Specialists
209-948-8767
www.britishcarspecialists.com
From: Michael Oritt=20
Sent: Tuesday, January 08, 2019 4:37 AM
To: Bob Spidell=20
Cc: healeys@autox.team.net=20
Subject: Re: [Healeys] Lightweight Flywheel
I have a DW lightened flywheel as well as an hydraulically activated BJ8 =
diaphragm clutch on my BN1. It is a great setup and the clutch's =
operation is extremely smooth and light. However, all of this lives =
within a Smitty's bell housing so I cannot speak to if and how this =
would function within a stock housing. BTW I modified an early =
six-cylinder Moss fiberglass transmission tunnel that mates with the =
original fixed rear tunnel section and fabricated a new bulkhead piece.
Best--Michael Oritt
On Tue, Jan 8, 2019 at 1:11 AM Bob Spidell <bspidell@comcast.net> wrote:
Does this conversion retain the BN1/2's mechanical clutch?
On 1/6/2019 1:01 PM, Curtis Arndt wrote:
Regarding lightening flywheels on a BN2, the best solutions I've =
heard of comes from Bruce Phillips at "Healey Surgeons" in Maryland, and =
is something he did on his BN2 decades ago with great success. =
Substitute the stock 100 flywheel for one from a BJ8... This =
accomplishes several things, first, it greatly reduces the weight =
without having to compromise an original flywheel (plus it's an original =
Austin Healey part), and secondly allows the use of the superior BJ8 =
diaphragm clutch. Bruce and others who've tried this swear by the =
conversion. =20
Supposedly, it does not work too well with a BN1 transmission since =
according to Bruce, the setup requires that the BN1 transmission bell =
housing be modified, i.e., material ground away for clearance? I have =
not been able confirm this, but fellow Concours member and performance =
expert John Hodgman told me he didn't think there would be a problem, =
and was investigating whether or not it could work on his BN1.=20
Comments?
Cheers,
Curt
On Sat, Jan 5, 2019 at 6:13 PM <glemon@neb.rr.com> wrote:
I had my flywheel lightened by a local machine shop. It was done =
in conjunction with an engine rebuild to M spec, so it was hard to =
evaluate the effect on performance. However I can say there were no =
I'll effects as far as idle or clutch/take off operation with the =
lightened flywheel.
Greg Lemon
Former BN1 owner
---- WILLIAM B LAWRENCE <ynotink@msn.com> wrote:=20
> I have a lightened flywheel in my BN1 (26 pounds as opposed to =
42) and I've used it for over 13 years with no known ill effects. The =
engine has been out for an unrelated failure and the crank checked out =
crack free. I use the car for highway cruising and around town and I =
don't spend much time above about 3200 RPM. I have Mike Lempert's 3.54:1 =
gears (hypoid final drive) and the 28% overdrive which gives an 80 MPH =
cruise at around that RPM. No land speed records, but no speeding =
tickets either...
>=20
> Bill Lawrence
> BN1 #554
> ________________________________
> From: Healeys <healeys-bounces@autox.team.net> on behalf of =
Michael Salter <michael.salter@gmail.com>
> Sent: Friday, January 4, 2019 1:03 AM
> To: Charlie Schott
> Cc: healeys@autox.team.net
> Subject: Re: [Healeys] Lightweight Flywheel
>=20
> Read this first
> =
http://www.netbug.net/blogmichael/2017/01/03/austin-healey-100-crank-fail=
ures/
>=20
_______________________________________________
Support Team.Net http://www.team.net/donate.html
Suggested annual donation $12.75
Archive: http://www.team.net/pipermail/healeys =
http://autox.team.net/archive
Healeys@autox.team.net
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Unsubscribe/Manage: =
http://autox.team.net/mailman/options/healeys/michael.oritt@gmail.com
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Archive: http://www.team.net/pipermail/healeys =
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<HTML><HEAD></HEAD>
<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: #000000">
<DIV>Yes you can install a light flywheel or a 6 cylinder flywheel =
in BN1=20
with a 3 speed. But you CAN NOT use the later 6 cylinder style clutch=20
cover. The cover will hit the bell housing and stop the engine =
from=20
turning. =E2=80=98</DIV>
<DIV> </DIV>
<DIV>The best answer is to use the 3 speed cover on the light =
flywheel.</DIV>
<DIV> </DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: =
#000000">David=20
Nock<BR>British Car=20
Specialists<BR>209-948-8767<BR>www.britishcarspecialists.com</DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dmichael.oritt@gmail.com=20
href=3D"mailto:michael.oritt@gmail.com";>Michael Oritt</A> </DIV>
<DIV><B>Sent:</B> Tuesday, January 08, 2019 4:37 AM</DIV>
<DIV><B>To:</B> <A title=3Dbspidell@comcast.net=20
href=3D"mailto:bspidell@comcast.net";>Bob Spidell</A> </DIV>
<DIV><B>Cc:</B> <A title=3Dhealeys@autox.team.net=20
href=3D"mailto:healeys@autox.team.net";>healeys@autox.team.net</A> </DIV>
<DIV><B>Subject:</B> Re: [Healeys] Lightweight =
Flywheel</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV dir=3Dltr>
<DIV class=3Dgmail_default style=3D"COLOR: #3333ff">I have a DW =
lightened flywheel=20
as well as an hydraulically activated BJ8 diaphragm clutch on my =
BN1. It=20
is a great setup and the clutch's operation is extremely smooth and =
light. =20
However, all of this lives within a Smitty's bell housing so I cannot =
speak to=20
if and how this would function within a stock housing. BTW I =
modified an=20
early six-cylinder Moss fiberglass transmission tunnel that mates with =
the=20
original fixed rear tunnel section and fabricated a new bulkhead =
piece.</DIV>
<DIV class=3Dgmail_default style=3D"COLOR: #3333ff"> </DIV>
<DIV class=3Dgmail_default style=3D"COLOR: #3333ff">Best--Michael =
Oritt</DIV></DIV>
<DIV> </DIV>
<DIV class=3Dgmail_quote>
<DIV dir=3Dltr>On Tue, Jan 8, 2019 at 1:11 AM Bob Spidell <<A=20
href=3D"mailto:bspidell@comcast.net";>bspidell@comcast.net</A>> =
wrote:<BR></DIV>
<BLOCKQUOTE class=3Dgmail_quote=20
style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: =
rgb(204,204,204) 1px solid">
<DIV bgcolor=3D"#FFFFFF">
<P>Does this conversion retain the BN1/2's mechanical clutch?</P>
<DIV class=3Dgmail-m_-2375546770219136501moz-cite-prefix>On 1/6/2019 =
1:01 PM,=20
Curtis Arndt wrote:<BR></DIV>
<BLOCKQUOTE type=3D"cite">
<DIV dir=3Dltr>Regarding lightening flywheels on a BN2, the =
best =20
solutions I've heard of comes from Bruce Phillips at "Healey =
Surgeons" in=20
Maryland, and is something he did on his BN2 decades ago with great=20
success. Substitute the stock 100 flywheel for one from a =
BJ8... This=20
accomplishes several things, first, it greatly reduces the weight =
without=20
having to compromise an original flywheel (plus it's an original =
Austin=20
Healey part), and secondly allows the use of the superior BJ8 =
diaphragm=20
clutch. Bruce and others who've tried this swear by the=20
conversion. =20
<DIV> </DIV>
<DIV>Supposedly, it does not work too well with a BN1 transmission =
since=20
according to Bruce, the setup requires that the BN1 transmission =
bell=20
housing be modified, i.e., material ground away for clearance? =
I have=20
not been able confirm this, but fellow Concours member and =
performance=20
expert John Hodgman told me he didn't think there would be a =
problem, and=20
was investigating whether or not it could work on his BN1. </DIV>
<DIV> </DIV>
<DIV>Comments?</DIV>
<DIV> </DIV>
<DIV>Cheers,</DIV>
<DIV> </DIV>
<DIV>Curt</DIV></DIV>
<DIV> </DIV>
<DIV class=3Dgmail_quote>
<DIV dir=3Dltr>On Sat, Jan 5, 2019 at 6:13 PM <<A=20
href=3D"mailto:glemon@neb.rr.com"; =
target=3D_blank>glemon@neb.rr.com</A>>=20
wrote:<BR></DIV>
<BLOCKQUOTE class=3Dgmail_quote=20
style=3D"PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: =
rgb(204,204,204) 1px solid">I=20
had my flywheel lightened by a local machine shop. It was =
done in=20
conjunction with an engine rebuild to M spec, so it was hard to =
evaluate=20
the effect on performance. However I can say there were no =
I'll=20
effects as far as idle or clutch/take off operation with the =
lightened=20
flywheel.<BR><BR>Greg Lemon<BR>Former BN1 owner<BR><BR>---- =
WILLIAM B=20
LAWRENCE <<A href=3D"mailto:ynotink@msn.com"=20
target=3D_blank>ynotink@msn.com</A>> wrote: <BR>> I have a =
lightened=20
flywheel in my BN1 (26 pounds as opposed to 42) and I've used it =
for over=20
13 years with no known ill effects. The engine has been out for an =
unrelated failure and the crank checked out crack free. I use the =
car for=20
highway cruising and around town and I don't spend much time above =
about=20
3200 RPM. I have Mike Lempert's 3.54:1 gears (hypoid final drive) =
and the=20
28% overdrive which gives an 80 MPH cruise at around that RPM. No =
land=20
speed records, but no speeding tickets either...<BR>> <BR>> =
Bill=20
Lawrence<BR>> BN1 #554<BR>> =
________________________________<BR>>=20
From: Healeys <<A =
href=3D"mailto:healeys-bounces@autox.team.net"=20
target=3D_blank>healeys-bounces@autox.team.net</A>> on behalf =
of Michael=20
Salter <<A href=3D"mailto:michael.salter@gmail.com"=20
target=3D_blank>michael.salter@gmail.com</A>><BR>> Sent: =
Friday,=20
January 4, 2019 1:03 AM<BR>> To: Charlie Schott<BR>> Cc: <A=20
href=3D"mailto:healeys@autox.team.net"=20
target=3D_blank>healeys@autox.team.net</A><BR>> Subject: Re: =
[Healeys]=20
Lightweight Flywheel<BR>> <BR>> Read this first<BR>> <A=20
=
href=3D"http://www.netbug.net/blogmichael/2017/01/03/austin-healey-100-cr=
ank-failures/"=20
rel=3Dnoreferrer=20
=
target=3D_blank>http://www.netbug.net/blogmichael/2017/01/03/austin-heale=
y-100-crank-failures/</A><BR>>=20
=
<BR><BR></BLOCKQUOTE></DIV></BLOCKQUOTE></DIV>___________________________=
____________________<BR>Support=20
Team.Net <A href=3D"http://www.team.net/donate.html"; rel=3Dnoreferrer=20
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