[TR] Pertronix Failure?

[TERRY SMITH]

Hi, Dave.  Yes, he did the rebuild on the 25D dizzy I'm running now.  It's a points distributor with a Pertronix modification, so luckily don't have to deal with the entire distributor.  And agree, he does good work.  

> On May 15, 2019 at 11:55 PM DAVE HOGYE <dlhogye at comcast.net> wrote:
> 
> 
>     I always refer distributor issues to Jeff at Advanced Distributors.  He knows distributors for British cars like no one else.  His work and rebuilds are perfect.  Either points or Pertronix.
> 
>     I don't have direct contact info handy, but Advanced Distributors is easy to find.  
> 
>     Thanks for sharing what you have found.  I'll check mine asap.  I've been wanting to send Jeff a couple distributors to have a couple spares, one points and one Pertronix.  I also have 2 other cars that will need fresh distributors eventually.  
> 
>     Dave H.
> 
>         > > On May 15, 2019 at 7:57 PM TERRY SMITH <terryrs at comcast.net> wrote:
> > 
> > 
> >         Thanks, Bob.  That's my read as well.  I'll report if the replacement I've ordered from BP North doesn't fix it.
> > 
> >             > > > On May 15, 2019 at 10:54 PM Kinderlehrer <kinderlehrer at comcast.net> wrote:
> > > 
> > > 
> > >             I’ve had 2 of them fail with the magnets in the collar getting all askew. Doesn’t run well like that.
> > > 
> > >              
> > > 
> > >             Bob
> > > 
> > >              
> > > 
> > >             From: Triumphs [mailto:triumphs-bounces at autox.team.net] On Behalf Of Randall
> > >             Sent: Wednesday, May 15, 2019 7:45 PM
> > >             To: TERRY SMITH; triumphs at autox.team.net
> > >             Subject: Re: [TR] Pertronix Failure?
> > > 
> > >              
> > > 
> > >             Well, maybe. Is it loose on the point can? Or does the point cam just turn back and forth a bit?
> > >             Or does the whole mess move side to side?
> > > 
> > >             It normal for the point cam to be able to turn slightly. But there should be no side to side play; and the plastic piece should be tight on the point cam.
> > > 
> > >             Side play is usually a sign of wear in the shaft bushing. If the plastic piece is loose, its probably just time, heat and vibration vs cheap plastic.
> > >             -- Randall
> > > 
> > >             On 15 May 2019 18:41:10 GMT-07:00, TERRY SMITH <terryrs at comcast.net mailto:terryrs at comcast.net > wrote:
> > > 
> > >             Okay, so I was wrong.  I thought the intermittent engine miss on the TR3 had to do with a dislodged damper on the forward carb.  Test drive said no, engine still stumbled, cleared, stumbled again.  Changed fuel filters out because they were due anyway.  Problem persisted.  Checked the floats movements, all fine.  Problem persisted.  Finally just swapped the carbs entirely with spares that I knew worked, problem persisted.  So...not fuel.  If it were valves, it wouldn't be intermittent, unless a valve were sticking, right?  
> > > 
> > >              
> > > 
> > >             Next up assumption is it's electrical.  Swapped the distributor, wires and rotor with spares I knew worked.  Problem persisted.  Checked for potential electrical shorts.  Nothing obvious.  Yeesh!
> > > 
> > >              
> > > 
> > >             I run a Pertronix.  Went online and read about Pertronix troubleshooting.  Piece I read mentioned that the trigger magnet that spins on the rotor can come loose and affect the timing.  I checked this and LO!  The trigger magnet is indeed loose.  I seem to remember when I put it on some eight or nine years ago, that it went on tight.  But it now wiggles about an eighth of an inch back and forth, maybe a bit more.  
> > > 
> > >              
> > > 
> > >             So question.  Do I remember correctly, it's supposed to be tight?  And second, what would cause it to come loose over time?
> > > 
> > >              
> > > 
> > >             I know it could still be a sticking valve, but this first.  Thanks, everyone for patience with this long message.
> > > 
> > >              
> > > 
> > >             Terry Smith, '59 TR3A
> > > 
> > >             New Hampshire
> > > 
> > >         > > 
> > 
> >          
> > 
> >     > 
> 
>      
> 
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> >     > 
> 
>      
> 


 
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