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One for Degsy....6v>12v


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Hi mate.

 

I know we have talked about this many times with regards to converting from 6 to 12volt.

 

As I use my Jimmy a far bit I getting rather frustrated with the way my truck takes its time to start everytime you switch it off so I would like to convert up to 12volt...in the near future.

 

You used an alternator of an Escort, could you post here what else is needed?

 

Yours beggingly.

 

Jack.

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Hi Jack

You will go and ask these awkward questions when you know perfectly well what my memory errrr what was the question :?

The alternator is off a Mk4 Escort, it's a Bosch one with a split pulley so youcan put a spacer in the middle and use the same fan belt, move the adjuster bracket on the water pump bolts and i seem to remember reshaping it slightly. I took the feed from the alternator to the input terminal on the original regulator and then took the feed from the same terminal having discarded the original dynamo wires. The rest of the wiring can be left untouched so keeping a fairly original look. You will need a small warning light to fit in the dash, a new battery, coil, and bulbs. You will also need to drop the voltage on the fuel tank sender unit and gauge to 6 volts, keep it disconnected until you are sure of the voltage, I didn,t and b------d it up :oops. As we've discussed before the starter should be ok, I know people who have used them at 12volts for years with no problems. Thats all I can think of at the moment but if I've forgotten something I'll be happy for anybody to remind me.

It is well worth doing Jack and you will find a huge difference, we certainly did.

 

Regards

Degsy

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Hi Jack,

 

I was all set to swap the jeep to 12v but was stopped by Tony Sudds advice.

 

His words of wisdom were, if it needed to be 12v uncle sam would have built em 12v.

Its often other areas that need looking at , battery leads need to be heavier for 6v to prevent volt drop, connections/earths need to be good, compressions need to be OK.

 

I looked at my valves and redid them, hey presto better starting and still 6v.

There is no saying its your valves Jack but there are other areas to check before jumping to 12v.

I'm not a rivet spotter so I have no problem with swapping to 12 volt for practicality but seems a shame to change it for no reason.

 

 

 

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Good advice Tim.

 

Hadn't thought of that, suppose I going to need some kit to test all of the above :-( :cry:

 

Or I could ask Hardy Ferret to take a look for me at the Purbeck show but I am just getting so tired of the slow starts and it is even slower when the engine is warm :evil:

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Whilst I have great respect for Tony Sudds what was acceptable 60 plus years ago and what is acceptable today particularly with regard to lighting are two very different things. The discussion was also about GMC trucks, not Jeeps and they are two very different vehicles, we have converted our GMC but not the Jeep although we have seriously considered it from the lighting point of view.

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I'm going to try to get away with uping the voltage reg to 12v, the generator on my 352 is pumping out 25 +v so to get 12 isnt a problem .The plus side is as the voltage goes up you need less current so the regs should handle the 12v.I'm going to give it a try over the next week as I've nothing to loose,I can always swop to an alternator in the end.

 

Has anyone ever tried this before??.

 

 

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Yes, this has been tried before, with varying degrees of success. The key point to remember is that your charger is giving out 25v in a NO LOAD situation. When its asked to WORK at a high level output, long term.... it won't be so happy.

 

It WILL fail prematurely, and obviously and at the most inconvenient of times.....just to get its own back!

 

My personal advice is dont do it.

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