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--></style></head><body lang=EN-US link=blue vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>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.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Simon – you can’t wait until you remove the engine for this fix!</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Harold<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:healeys@autox.team.net">Bob Haskell via Healeys</a><br><b>Sent: </b>Wednesday, September 8, 2021 2:46 AM<br><b>To: </b><a href="mailto:bluehealey@gmail.com">Bluehealey</a>; <a href="mailto:Healeys@autox.team.net">Autox Healeys</a><br><b>Subject: </b>Re: [Healeys] Lightened flywheels</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Alan,</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Cracking around the engine mount is a pretty common issue, although </p><p class=MsoNormal>probably not to the point where the engine mount separates from the </p><p class=MsoNormal>frame. A 20 year old BT7 I bought in 1980 had cracks around the mounts.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Cheers,</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Bob Haskell</p><p class=MsoNormal>Austin Healey 3000 BN7/BT7 registrar</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On 9/8/21 4:13 AM, Bluehealey wrote:</p><p class=MsoNormal>> Team.</p><p class=MsoNormal>> Whilst this is an interesting topic and ‘Lightened Flywheel’ may have </p><p class=MsoNormal>> some bragging rights potential, carrying out this mod does have a down </p><p class=MsoNormal>> side.</p><p class=MsoNormal>> The reduced flywheel mass creates a more pronounced engine reaction </p><p class=MsoNormal>> force in the opposite direction.</p><p class=MsoNormal>> I had a BJ8 almost 20 years ago which had a very light flywheel, poor </p><p class=MsoNormal>> tick over and quick throttle response. It sounded good. However the </p><p class=MsoNormal>> torque reaction was extreme enough to lift the engine mount tower out </p><p class=MsoNormal>> of the chassis rails !!</p><p class=MsoNormal>> The cracking in the pics have been highlighted with red sharpie for </p><p class=MsoNormal>> clarity.</p><p class=MsoNormal>> Enjoy</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> Alan - from my iPad</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>>> On 8 Sep 2021, at 06:16, John Spaur via Healeys </p><p class=MsoNormal>>> <healeys@autox.team.net> wrote:</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> </p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> More nitpicking.</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> The density of gasoline is also determined by its temperature and </p><p class=MsoNormal>>> chemical makeup. Premium unleaded gasoline has a higher density than </p><p class=MsoNormal>>> regular unleaded. Ethanol has a higher density than gasoline without </p><p class=MsoNormal>>> ethanol, so the percentage of ethanol needs to be factored in. </p><p class=MsoNormal>>> Finally, gasoline is denser at colder temperatures than it is at </p><p class=MsoNormal>>> higher temperatures. So please, take all of this into account when </p><p class=MsoNormal>>> determining the fuel weight in your cars based on your location and </p><p class=MsoNormal>>> the fuel available.</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> I wonder if the lead content of gasoline increases its weight </p><p class=MsoNormal>>> because, as we all know lead, is very heavy. Hahaha</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> John Spaur</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> *From:*Healeys [mailto:healeys-bounces@autox.team.net] *On Behalf Of </p><p class=MsoNormal>>> *Michael Oritt</p><p class=MsoNormal>>> *Sent:* Tuesday, September 7, 2021 5:40 PM</p><p class=MsoNormal>>> *To:* Keith Pennell <llennep@verizon.net></p><p class=MsoNormal>>> *Cc:* healeys@autox.team.net</p><p class=MsoNormal>>> *Subject:* Re: [Healeys] Lightened flywheels</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Keith--</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Right you are (and wrong I am) but 6 x 6.3=20+/-which is still more </p><p class=MsoNormal>>> than 5...</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Best--Michael Oritt</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> On Tue, Sep 7, 2021 at 7:53 PM llennep--- via Healeys </p><p class=MsoNormal>>> <healeys@autox.team.net <mailto:healeys@autox.team.net>> wrote:</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Nitpicking me here . . .. .. .</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> gallon of gasoline weighs a tad over 6 lbs</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> :)</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> -----Original Message-----</p><p class=MsoNormal>>> From: Michael Oritt via Healeys <healeys@autox.team.net</p><p class=MsoNormal>>> <mailto:healeys@autox.team.net>></p><p class=MsoNormal>>> To: richard mayor <boyracer466@gmail.com</p><p class=MsoNormal>>> <mailto:boyracer466@gmail.com>></p><p class=MsoNormal>>> Cc: healeys <healeys@autox.team.net <mailto:healeys@autox.team.net>></p><p class=MsoNormal>>> Sent: Tue, Sep 7, 2021 7:40 pm</p><p class=MsoNormal>>> Subject: Re: [Healeys] Lightened flywheels</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> I hesitate to nitpick but as to the statement that /"4 to 5</p><p class=MsoNormal>>> pounds off vehicle weight is really only the equivalent of half a</p><p class=MsoNormal>>> tank of fuel" ///the last time I looked an AH fuel tank holds</p><p class=MsoNormal>>> about 12 gallons and since gasoline weighs approximately 7.5 lbs</p><p class=MsoNormal>>> per gallon half a tank weighs about 45 pounds. The defense rests....</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Best--Michael Oritt</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> On Tue, Sep 7, 2021 at 6:00 PM richard mayor via Healeys</p><p class=MsoNormal>>> <healeys@autox.team.net <mailto:healeys@autox.team.net>> wrote:</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Michael,</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Comparing the weight of fuel in the gas tank to rotational</p><p class=MsoNormal>>> mass is like comparing apples to bananas.</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Richard</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> On Tue, Sep 7, 2021 at 2:24 PM Michael Salter</p><p class=MsoNormal>>> <michaelsalter@gmail.com <mailto:michaelsalter@gmail.com>> wrote:</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> The total mass of the flywheel is not completely relevant</p><p class=MsoNormal>>> insofar as engine moment of inertia is concerned.</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> What is important is the mass removed times the square of</p><p class=MsoNormal>>> the radius, so just how much weight has been removed per</p><p class=MsoNormal>>> se is not important.</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Secondly removing rotational inertia is not always the</p><p class=MsoNormal>>> best thing to do, if it was you can be assured that</p><p class=MsoNormal>>> manufacturers would be all over it as a way to save money.</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> The rotational mass is often designed in to protect the</p><p class=MsoNormal>>> drive train, in particular the gearbox.</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Read this:</p><p class=MsoNormal>>> https://www.netbug.net/blogmichael/2017/01/03/austin-healey-100-crank-failures/</p><p class=MsoNormal>>> <https://www.netbug.net/blogmichael/2017/01/03/austin-healey-100-crank-failures/></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Thirdly lightening a flywheel in of itself has very</p><p class=MsoNormal>>> little effect on acceleration. An engine with a lightened</p><p class=MsoNormal>>> flywheel may accelerate to 6000 RPM 1 - 2 seconds more</p><p class=MsoNormal>>> quickly but that doesn't necessarily equate to 1-2</p><p class=MsoNormal>>> seconds faster to 60 MPH. You may be able to shift</p><p class=MsoNormal>>> marginally faster if the gearbox can stand the extra</p><p class=MsoNormal>>> loads and the 4 to 5 pounds off vehicle weight is really</p><p class=MsoNormal>>> only the equivalent of half a tank of fuel. (Who ever</p><p class=MsoNormal>>> notices that their car accelerates more quickly with a</p><p class=MsoNormal>>> half full gas tank).</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Just sayin'</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> M</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> On Tue., Sep. 7, 2021, 4:17 p.m. Earl Kagna via Healeys,</p><p class=MsoNormal>>> <healeys@autox.team.net <mailto:healeys@autox.team.net>></p><p class=MsoNormal>>> wrote:</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> I have Bill Bolton lightened flywheels in both my</p><p class=MsoNormal>>> Healeys. According to Kent Lambert, who took over</p><p class=MsoNormal>>> Bills Healey business awhile back, the stock weight</p><p class=MsoNormal>>> (6 cyl) is 28.5 pounds, and Bills machining program</p><p class=MsoNormal>>> reduced them to 24.</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Both of my cars run just fine, no problems at all in</p><p class=MsoNormal>>> the 20 + or so years that I’ve had them installed.</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Earl Kagna</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Victoria BC</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> BJ8, BT7 tri-carb</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> *From:*Healeys <healeys-bounces@autox.team.net</p><p class=MsoNormal>>> <mailto:healeys-bounces@autox.team.net>> *On Behalf</p><p class=MsoNormal>>> Of *richard mayor</p><p class=MsoNormal>>> *Sent:* Tuesday, September 7, 2021 10:23 AM</p><p class=MsoNormal>>> *To:* healeys <healeys@autox.team.net</p><p class=MsoNormal>>> <mailto:healeys@autox.team.net>></p><p class=MsoNormal>>> *Subject:* [Healeys] Lightened flywheels</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> 6 cylinder flywheels vary slightly but are all</p><p class=MsoNormal>>> generally in the 29 pound range. Very aggressive</p><p class=MsoNormal>>> machine work can get the weight down to the 22-23</p><p class=MsoNormal>>> pound range.</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> How much weight you take off will affect your driving</p><p class=MsoNormal>>> style. To maintain the feel of a stock Healey while</p><p class=MsoNormal>>> still improving the engines response, I suggest</p><p class=MsoNormal>>> removing no more than 3 pounds.</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Richard</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> </p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Virus-free. www.avast.com</p><p class=MsoNormal>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> _______________________________________________</p><p class=MsoNormal>>> Support Team.Net http://www.team.net/donate.html</p><p class=MsoNormal>>> <http://www.team.net/donate.html></p><p class=MsoNormal>>> Suggested annual donation $12.75</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Archive: http://www.team.net/pipermail/healeys</p><p class=MsoNormal>>> <http://www.team.net/pipermail/healeys></p><p class=MsoNormal>>> http://autox.team.net/archive</p><p class=MsoNormal>>> <http://autox.team.net/archive></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Healeys@autox.team.net <mailto:Healeys@autox.team.net></p><p class=MsoNormal>>> http://autox.team.net/mailman/listinfo/healeys</p><p class=MsoNormal>>> <http://autox.team.net/mailman/listinfo/healeys></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Unsubscribe/Manage:</p><p class=MsoNormal>>> http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com</p><p class=MsoNormal>>> <http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> _______________________________________________</p><p class=MsoNormal>>> Support Team.Net http://www.team.net/donate.html</p><p class=MsoNormal>>> <http://www.team.net/donate.html></p><p class=MsoNormal>>> Suggested annual donation $12.75</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Archive: http://www.team.net/pipermail/healeys</p><p class=MsoNormal>>> <http://www.team.net/pipermail/healeys></p><p class=MsoNormal>>> http://autox.team.net/archive <http://autox.team.net/archive></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Healeys@autox.team.net <mailto:Healeys@autox.team.net></p><p class=MsoNormal>>> http://autox.team.net/mailman/listinfo/healeys</p><p class=MsoNormal>>> <http://autox.team.net/mailman/listinfo/healeys></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Unsubscribe/Manage:</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> http://autox.team.net/mailman/options/healeys/michael.oritt@gmail.com</p><p class=MsoNormal>>> <http://autox.team.net/mailman/options/healeys/michael.oritt@gmail.com></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> -- </p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Best--Michael</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> _______________________________________________</p><p class=MsoNormal>>> Support Team.Net http://www.team.net/donate.html</p><p class=MsoNormal>>> <http://www.team.net/donate.html></p><p class=MsoNormal>>> Suggested annual donation $12.75</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Archive: http://www.team.net/pipermail/healeys</p><p class=MsoNormal>>> <http://www.team.net/pipermail/healeys>http://autox.team.net/archive</p><p class=MsoNormal>>> <http://autox.team.net/archive></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Healeys@autox.team.net <mailto:Healeys@autox.team.net></p><p class=MsoNormal>>> http://autox.team.net/mailman/listinfo/healeys</p><p class=MsoNormal>>> <http://autox.team.net/mailman/listinfo/healeys></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Unsubscribe/Manage:</p><p class=MsoNormal>>> http://autox.team.net/mailman/options/healeys/llennep@verizon.net</p><p class=MsoNormal>>> <http://autox.team.net/mailman/options/healeys/llennep@verizon.net></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> _______________________________________________</p><p class=MsoNormal>>> Support Team.Net http://www.team.net/donate.html</p><p class=MsoNormal>>> <http://www.team.net/donate.html></p><p class=MsoNormal>>> Suggested annual donation $12.75</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Archive: http://www.team.net/pipermail/healeys</p><p class=MsoNormal>>> <http://www.team.net/pipermail/healeys></p><p class=MsoNormal>>> http://autox.team.net/archive <http://autox.team.net/archive></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Healeys@autox.team.net <mailto:Healeys@autox.team.net></p><p class=MsoNormal>>> http://autox.team.net/mailman/listinfo/healeys</p><p class=MsoNormal>>> <http://autox.team.net/mailman/listinfo/healeys></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Unsubscribe/Manage:</p><p class=MsoNormal>>> http://autox.team.net/mailman/options/healeys/michael.oritt@gmail.com</p><p class=MsoNormal>>> <http://autox.team.net/mailman/options/healeys/michael.oritt@gmail.com></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> -- </p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Best--Michael</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> _______________________________________________</p><p class=MsoNormal>>> Support Team.Net http://www.team.net/donate.html</p><p class=MsoNormal>>> Suggested annual donation $12.75</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Archive: http://www.team.net/pipermail/healeys </p><p class=MsoNormal>>> http://autox.team.net/archive</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Healeys@autox.team.net</p><p class=MsoNormal>>> http://autox.team.net/mailman/listinfo/healeys</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>>> Unsubscribe/Manage: </p><p class=MsoNormal>>> http://autox.team.net/mailman/options/healeys/bluehealey@gmail.com</p><p class=MsoNormal>>><o:p> </o:p></p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> _______________________________________________</p><p class=MsoNormal>> Support Team.Net http://www.team.net/donate.html</p><p class=MsoNormal>> Suggested annual donation $12.75</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> Healeys@autox.team.net</p><p class=MsoNormal>> http://autox.team.net/mailman/listinfo/healeys</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal>> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/rchaskell@earthlink.net</p><p class=MsoNormal>><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>_______________________________________________</p><p class=MsoNormal>Support Team.Net http://www.team.net/donate.html</p><p class=MsoNormal>Suggested annual donation $12.75</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Healeys@autox.team.net</p><p class=MsoNormal>http://autox.team.net/mailman/listinfo/healeys</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/manifold@telus.net</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>