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Distrubitor Points burning

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FROSTY Insano Dub Head

744 posts · joined May 2009 ·

#736477
I have been running a Mallory twin points dist for years ( old school) without a problem. I picked up the Voltmaster 2 coil that is matched for this dist and it destroyed the points in about 5 mins. what would cause this? Wires neg- to the dist, pos+ to the ignition swich.
any suggestions. ( except throw the old shit in the bin...LOL)

dangerous 23 Windows of Awesome

5,901 posts · joined Jan 2005 ·

#736494
Most times that happens it is the fault of the condesor.
Mine needed two condensors and they were big fat ines from Mallory originally.
Perhaps look on the mallory site?
westi wrote:That's mad Alan.

FROSTY Insano Dub Head

744 posts · joined May 2009 ·

#736517
I have just down loaded the instal guide from Mallory and I don't have the ballist resistor. I'll try it again with it.

clinker42 Officially Full-On Dubber

381 posts · joined Aug 2008 ·

#736528
Well done Frosty, Right on the money.

Points cant handle 12 volts, most cars that used to have points had resistors to reduce the volts down to 9 v. Most auto leccies sell em, the old porcelain boxes with a wire coil inside.

On a side note, what made you go for a twin point.

grumble Son of Jim - Creator of Good

2,672 posts · joined Jun 2008 ·

#736549
You hit the nail on the head Frosty,without the ballast resistor there is no way that the poor condenser do its job.

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#736579
FROSTY wrote:I have been running a Mallory twin points dist for years ( old school) without a problem. I picked up the Voltmaster 2 coil that is matched for this dist and it destroyed the points in about 5 mins. what would cause this? Wires neg- to the dist, pos+ to the ignition switch.
any suggestions.
the Voltmaster coil is probably very low resistance with very high Output Voltage...
You are making the points work too hard...
maybe two new condensors would fix the problem??

How old were the points??
I just had to renew My points as the rubbing block had worn down and was shorting out on the shaft...

Just go back to the other coil you were using..

but still sounds like Your condensor has had it...

If the coil needs a resistor - its usually printed on the coil..

LEE
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#736586
Have to agree with the condensor crew.....my vote
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

FROSTY Insano Dub Head

744 posts · joined May 2009 ·

#736601
Thanks Guys, I'm going to try the duel condensors with the resistor in the line in too.
It smashed the points and even started to melt the metal that holds the point itself, i was real suprised that only took about 3-4 minutes.

The reason I went to this distrubitor was I picked up two of them at a swap meet ten years ago for about $20 since then I have found another four ( cheap). The twn points are great as there is minimal wear to the points. They are totally adjustable being able to buy different tension springs for the advance( not that I have touched them) and the maximum advance is easily adjusted too.
The reason for the coil change, I picked up the Voltmaster2 at the Action Day for $10 (bargin) The guys selling it said that he couln't gaurantee it worked....It had the negative wired directly to the mounting bracket and that was obvious that it wouldn't if wired like that.
My new slogan is "One mans trash is another mans treasure" ( I've used it three times this week and its only Tuesday)

jsheppard64 Officially Full-On Dubber

323 posts · joined Mar 2008 ·

#736750
FROSTY wrote:Thanks Guys, I'm going to try the duel condensors with the resistor in the line in too.
It smashed the points and even started to melt the metal that holds the point itself, i was real suprised that only took about 3-4 minutes.

The reason I went to this distrubitor was I picked up two of them at a swap meet ten years ago for about $20 since then I have found another four ( cheap). The twn points are great as there is minimal wear to the points. They are totally adjustable being able to buy different tension springs for the advance( not that I have touched them) and the maximum advance is easily adjusted too.
The reason for the coil change, I picked up the Voltmaster2 at the Action Day for $10 (bargin) The guys selling it said that he couln't gaurantee it worked....It had the negative wired directly to the mounting bracket and that was obvious that it wouldn't if wired like that.
My new slogan is "One mans trash is another mans treasure" ( I've used it three times this week and its only Tuesday)
if it's negative ground... could it be the coil has previously used with a CDI systems?

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#736762
Only use the balast resistor if you have a 9 volt coil. If it's 12 you will drastically reduce the output.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

FROSTY Insano Dub Head

744 posts · joined May 2009 ·

#736857
I went with the twin condensors and it runs perfect. ( you learn something every day) I had it all packed up on the trailer for the tnt tonight and they called off. The willobank office said that the vis was down to 100m at one point today.
thanks for your help!

FROSTY Insano Dub Head

744 posts · joined May 2009 ·

#738994
I ran the twin condensors over the Warwick weekend and it worked perfect, I did try the 0.9 ohm Balist resistor on the input and really couldn't tell the difference ( may be over time the points will show the difference) . I took the old coil and spare points just incase, looks like they will go in a box under the house now.