Something similar was done on the rally cars. Now, where would I have
learned that? Hmm.
Cheers,
Bob Haskell
Austin Healey 3000 BN7/BT7 registrar
On 9/8/21 2:38 PM, Harold Manifold wrote:
>
> Here is a picture of a fix for cracked engine mounts an experienced
> Healey restorer recommended for my car. I was advised it is not
> unusual for cracks to appear around the engine mounts.
>
> Simon â?? you canâ??t wait until you remove the engine for this fix!
>
> Harold
>
> *From: *Bob Haskell via Healeys <mailto:healeys@autox.team.net>
> *Sent: *Wednesday, September 8, 2021 2:46 AM
> *To: *Bluehealey <mailto:bluehealey@gmail.com>; Autox Healeys
> <mailto:Healeys@autox.team.net>
> *Subject: *Re: [Healeys] Lightened flywheels
>
> Alan,
>
> Cracking around the engine mount is a pretty common issue, although
>
> probably not to the point where the engine mount separates from the
>
> frame. A 20 year old BT7 I bought in 1980 had cracks around the mounts.
>
> Cheers,
>
> Bob Haskell
>
> Austin Healey 3000 BN7/BT7 registrar
>
> On 9/8/21 4:13 AM, Bluehealey wrote:
>
> > Team.
>
> > Whilst this is an interesting topic and â??Lightened Flywheelâ?? may have
>
> > some bragging rights potential, carrying out this mod does have a down
>
> > side.
>
> > The reduced flywheel mass creates a more pronounced engine reaction
>
> > force in the opposite direction.
>
> > I had a BJ8 almost 20 years ago which had a very light flywheel, poor
>
> > tick over and quick throttle response. It sounded good. However the
>
> > torque reaction was extreme enough to lift the engine mount tower out
>
> > of the chassis rails !!
>
> > The cracking in the pics have been highlighted with red sharpie for
>
> > clarity.
>
> > Enjoy
>
> >
>
> >
>
> > Alan - from my iPad
>
> >
>
> >> On 8 Sep 2021, at 06:16, John Spaur via Healeys
>
> >> <healeys@autox.team.net> wrote:
>
> >>
>
> >> 
>
> >>
>
> >> More nitpicking.
>
> >>
>
> >> The density of gasoline is also determined by its temperature and
>
> >> chemical makeup. Premium unleaded gasoline has a higher density than
>
> >> regular unleaded. Ethanol has a higher density than gasoline without
>
> >> ethanol, so the percentage of ethanol needs to be factored in.
>
> >> Finally, gasoline is denser at colder temperatures than it is at
>
> >> higher temperatures. So please, take all of this into account when
>
> >> determining the fuel weight in your cars based on your location and
>
> >> the fuel available.
>
> >>
>
> >> I wonder if the lead content of gasoline increases its weight
>
> >> because, as we all know lead, is very heavy. Hahaha
>
> >>
>
> >> John Spaur
>
> >>
>
> >> *From:*Healeys [mailto:healeys-bounces@autox.team.net] *On Behalf Of
>
> >> *Michael Oritt
>
> >> *Sent:* Tuesday, September 7, 2021 5:40 PM
>
> >> *To:* Keith Pennell <llennep@verizon.net>
>
> >> *Cc:* healeys@autox.team.net
>
> >> *Subject:* Re: [Healeys] Lightened flywheels
>
> >>
>
> >> Keith--
>
> >>
>
> >> Right you are (and wrong I am) but 6 x 6.3=20+/-which is still more
>
> >> than 5...
>
> >>
>
> >> Best--Michael Oritt
>
> >>
>
> >> On Tue, Sep 7, 2021 at 7:53 PM llennep--- via Healeys
>
> >> <healeys@autox.team.net <mailto:healeys@autox.team.net>> wrote:
>
> >>
>
> >>Â Â Â Â Nitpicking me here . . .. Â .. .
>
> >>
>
> >>Â Â Â Â gallon of gasoline weighs a tad over 6 lbs
>
> >>
>
> >>Â Â Â Â :)
>
> >>
>
> >>Â Â Â Â -----Original Message-----
>
> >>Â Â Â Â From: Michael Oritt via Healeys <healeys@autox.team.net
>
> >> <mailto:healeys@autox.team.net>>
>
> >>Â Â Â Â To: richard mayor <boyracer466@gmail.com
>
> >> <mailto:boyracer466@gmail.com>>
>
> >>Â Â Â Â Cc: healeys <healeys@autox.team.net
> <mailto:healeys@autox.team.net>>
>
> >>Â Â Â Â Sent: Tue, Sep 7, 2021 7:40 pm
>
> >>Â Â Â Â Subject: Re: [Healeys] Lightened flywheels
>
> >>
>
> >>Â Â Â Â I hesitate to nitpick but as to the statement that /"4 to 5
>
> >>Â Â Â Â pounds off vehicle weight is really only the equivalent of half a
>
> >>Â Â Â Â tank of fuel" ///the last time I looked an AH fuel tank holds
>
> >>Â Â Â Â about 12 gallons and since gasoline weighs approximately 7.5 lbs
>
> >>    per gallon half a tank weighs about 45 pounds.  The defense
> rests....
>
> >>
>
> >>Â Â Â Â Best--Michael Oritt
>
> >>
>
> >>Â Â Â Â On Tue, Sep 7, 2021 at 6:00 PM richard mayor via Healeys
>
> >>Â Â Â Â <healeys@autox.team.net <mailto:healeys@autox.team.net>> wrote:
>
> >>
>
> >>Â Â Â Â Â Â Â Â Michael,
>
> >>
>
> >>Â Â Â Â Â Â Â Â Comparing the weight of fuel in the gas tank to rotational
>
> >>Â Â Â Â Â Â Â Â mass is like comparing apples to bananas.
>
> >>
>
> >>Â Â Â Â Â Â Â Â Richard
>
> >>
>
> >>Â Â Â Â Â Â Â Â On Tue, Sep 7, 2021 at 2:24 PM Michael Salter
>
> >> <michaelsalter@gmail.com <mailto:michaelsalter@gmail.com>> wrote:
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â The total mass of the flywheel is not completely
> >>relevant
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â insofar as engine moment of inertia is concerned.
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â What is important is the mass removed times the
> >>square of
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â the radius, so just how much weight has been
> >>removed per
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â se is not important.
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Secondly removing rotational inertia is not always
> >>the
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â best thing to do, if it was you can be assured that
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â manufacturers would be all over it as a way to
> >>save money.
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â The rotational mass is often designed in to
> >>protect the
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â drive train, in particular the gearbox.
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Read this:
>
> >>
> https://www.netbug.net/blogmichael/2017/01/03/austin-healey-100-crank-failures/
>
> >>
> <https://www.netbug.net/blogmichael/2017/01/03/austin-healey-100-crank-failures/>
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Thirdly lightening a flywheel in of itself has very
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â little effect on acceleration. An engine with a
> >>lightened
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â flywheel may accelerate to 6000 RPM 1 - 2 seconds
> >>more
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â quickly but that doesn't necessarily equate to 1-2
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â seconds faster to 60 MPH. You may be able to shift
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â marginally faster if the gearbox can stand the
> >>extra
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â loads and the 4 to 5 pounds off vehicle weight is
> >>really
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â only the equivalent of half a tank of fuel. (Who
> >>ever
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â notices that their car accelerates more quickly
> >>with a
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â half full gas tank).
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Just sayin'
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â M
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â On Tue., Sep. 7, 2021, 4:17 p.m. Earl Kagna via
> >>Healeys,
>
> >> <healeys@autox.team.net <mailto:healeys@autox.team.net>>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â wrote:
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â I have Bill Bolton lightened flywheels in
> >>both my
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Healeys. According to Kent Lambert, who
> >>took over
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Bills Healey business awhile back, the
> >>stock weight
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (6 cyl) is 28.5 pounds, and Bills
> >>machining program
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â reduced them to 24.
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Both of my cars run just fine, no problems
> >>at all in
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â the 20 + or so years that Iâ??ve had them
> >>installed.
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Earl Kagna
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Victoria BC
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â BJ8, BT7 tri-carb
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â *From:*Healeys
> >><healeys-bounces@autox.team.net
>
> >> <mailto:healeys-bounces@autox.team.net>> *On Behalf
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Of *richard mayor
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â *Sent:* Tuesday, September 7, 2021 10:23 AM
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â *To:* healeys <healeys@autox.team.net
>
> >> <mailto:healeys@autox.team.net>>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â *Subject:* [Healeys] Lightened flywheels
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 6 cylinder flywheels vary slightly but are
> >>all
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â generally in the 29 pound range. Very
> >>aggressive
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â machine work can get the weight down to
> >>the 22-23
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â pound range.
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â How much weight you take off will affect
> >>your driving
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â style. To maintain the feel of a stock
> >>Healey while
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â still improving the engines response, I
> >>suggest
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â removing no more than 3 pounds.
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Richard
>
> >>
>
> >>
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient>
>
> >>
>
> >>
>
> >>
>
> >>Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Virus-free. www.avast.com
>
> >>
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient>
>
> >>
>
> >>
>
> >> _______________________________________________
>
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>
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>
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>
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>
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>
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>
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>
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> >>
>
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>
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>
> >>
>
> >>
>
> >>Â Â Â Â --
>
> >>
>
> >>Â Â Â Â Best--Michael
>
> >>
>
> >> _______________________________________________
>
> >>Â Â Â Â Support Team.Net http://www.team.net/donate.html
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> >>
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> >> _______________________________________________
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> >>
>
> >>
>
> >> --
>
> >>
>
> >> Best--Michael
>
> >>
>
> >> _______________________________________________
>
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