Aussieveedubbers · Tech Talk

Distrubitor Points burning

https://forums.aussieveedubbers.com/threads/79198/distrubitor-points-burning

FROSTY ·

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 ·

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?

FROSTY ·

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 ·

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.

vw54 ·

the condensor stops the points burning

grumble ·

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

68AutoBug ·

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

matberry ·

Have to agree with the condensor crew.....my vote

FROSTY ·

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 ·

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 ·

Only use the balast resistor if you have a 9 volt coil. If it's 12 you will drastically reduce the output.

FROSTY ·

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 ·

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.