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<div>OK BJ8 issue...that is a lighter flywheel. I still recommend =
dumping the clutch to stop any run-on. Might check your timing with a light=
and set it to 17 degrees to compensate for the lousy fuel we get today. =
That appears to tbe the magic number for most of the old British iron- used=
to 95+ octane fuels. When those cars were built there was no corn in the =
fuel. Sad that many of our classics are now running on volts and amps.=
</div>
<div>An aside-on the old 100 gearbox, with just rifling for a seal, =
I add an o-ring to the input shaft to "contain the spinout. =
Hank<br>-------------------- <br><br>From: "Bob Spidell" =
<bspidell@comcast.net> <br>To: <gradea1@charter.net>, "Healeys"=
<healeys@autox.team.net> <br>Sent: June 18, 2024 at 11:46 AM PDT =
<br>Subject: Re: [Healeys] Lightened Flywheels <br>Thanks, Hank. To clarify=
, the seal I need to replace is at the front of the gearbox; i.e. the input=
shaft seal on my BJ8 gearbox. I'm pretty sure that's the source of the =
leak--disappointing, since the rebuild only a few years ago--because it =
smells like the MT-90 I use in my gearboxes (I know, syn leaks, but this =
box probably has 10K miles on it before it erupted). I also spent time and =
effort sealing the O/D drain, since I initially assumed it was the source =
of the leak. Makes me wonder if seal quality has suffered, like a lot of =
things. Pretty sure I checked the input shaft for wear.<br>I'm about =
(re-convinced) to forgo a lightened flywheel, since it apparently causes no=
harm (just have to remember to do it). I've heard it can actually cause an=
engine to run backwards, which would be all kinds of bad. bs On 6/18/2024 =
11:10 AM, Hank Leach wrote: > The best way to stop run on is foot on =
brake, car in gear-It's not > hurting anything and is recommended by the=
likes of Geoff Healey and > others. Denotation has a worse effect on =
the engine. > The downside of the lightened flywheel is a heavier clutch=
engagement. > That said the heaviest part I ever picked up is a 100 =
flywheel. Egad, > what a hunk of metal! > -However the issues =
with the flywheel/cracked crankshaft can be traced > to a lack of a =
front pulley dampener and that might be the better > solution to the =
issue. It may in fact make dumping the clutch easier > on the =
drivetrain, but not proven. Since your problem is with the > front of =
the engine, I would address the seal replacement -felt if you > are a =
purest -or yes, the modern solution fancy cover to stop drips on > the =
floor. I collect my Healey oil in a small swimming pool I > constructed =
to hold leaks, while in storage. Then some kerosene > quickly cleans up =
the mess when the car is moved. Since they no longer > oil the roadways,=
think of the benifit you are supplying to the > asphalt in longer life.=
Hank------------------- > > From: "Bob Spidell" <bspidell@comcast=
.net> > To: "Healeys" <healeys@autox.team.net> > Sent: June =
18, 2024 at 10:03 AM PDT > Subject: [Healeys] Lightened Flywheels > =
Listers, > I know this one has been discussed--well, beat to death--but =
it looks > like I'll have to pull my BJ8's gearbox/OD to replace a leaky=
front > seal, so I'm thinking of installing a lightened flywheel while =
I'm at > it. My main reason for considering it is to stop some pretty =
> significant run-on ('dieseling,' which I get on my BN2 as well). I'm =
> not totally comfortable with dropping the clutch in gear to stop it, =
> and any performance improvements would be a plus. It just so happens I=
> just caught an episode of 'Engine Masters' on MotorTrend TV, where =
> they seriously reduced the rotating mass of an engine--an SBC, which =
> is what they mostly do--and got some interesting results: more HP and =
> torque, as measured on a topnotch dyno. The gains were shown primarily=
> on acceleration which, intuitively I suppose, were greater when RPM =
> was raised at 300RPM/minute vs. 600. Any constant speed increases >=
weren't addressed as far as I could tell. The late, great Gary > =
Andersen, who raced, said the main benefit was faster spin-up for > =
rev-matching downshifts; anyone noted any other significant benefits? > =
The 'Dyno Master' on EM said he'd seen timing chain failures with > =
lightened flywheels; my main concern for both my Healeys has been > =
reliability, with minimal maintenance required, but if it > =
stops/minimizes the run-on I'd be happy. Anyone know how far you can > =
go lightening without adverse effects? TIA, Bob > =
_______________________________________________ Support Team.Net > =
Archive: http://www.team.net/pipermail/healeys > http://autox.team.=
net/archive/healeys Healeys@autox.team.net > http://autox.team.=
net/mailman/listinfo/healeys Unsubscribe/Manage: > http://autox.team.=
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net</div>
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