Just to clarify, the flywheel is one made by PRI in Oregon. Looks well
crafted. Anyone had experience? John http://www.prirace.com/engine.htm
Robert M. Lang wrote:
>On Thu, 9 Dec 2004, John Mitchell wrote:
>
>
>
>> I have a 19lb flywheel now, but for my engine rebuild, I've obtained
>>a wheel lightened to about 12lbs. Is this too lite for street use?
>>What kind of problems , if any can I expect. Thanks in Advance,
>>John Mitchell 76 TR6
>>
>>
>
>The only problem with a flywheel that's 12 pounds is that it might be
>weakened from loosing all the mass. Presuming that your crank is the
>late-style, that's easily 1/2 of the stock flywheel weight, maybe a tad
>more. That's a lot of metal to shed and still maintain reasonable
>strength.
>
>I'm not sure I'd go that light for a flywheel that is not routinely
>checked for cracks.
>
>As far as drivability, 12 pounds would be no problem. Keep in mind two
>things about flywheel mass as it related to TR6's - the stock crank weighs
>in at darn close to 80 pounds... losing 12 pounds at one end is not
>reducing the rotasting mass that much... HOWEVER - losing weight at the
>flywheel is good because you take most of the weight off at the outside of
>the wheel where it actually puts more stress on the last crank throw...
>losing weight on the flywheel is always good for a TR6 motor. Period. If
>you spin the motor more than the stock 5800 RPM redline, losing weight on
>the flywheel is ESSENTIAL.
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