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John Deere Tractors Discussion Forum
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john deere a distributor coil

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1948_Deere

01-02-2007 15:43:26




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flame thrower coils are supposed to be better than regular ones. Are they really better, or are they like the regular ones? What is different besides them being chrome? Are they JUNK???

want to know before thinking of buying one.




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Glen in TX

01-02-2007 22:34:14




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 Re: john deere a distributor coil in reply to 1948_Deere, 01-02-2007 15:43:26  
Their catalog explains....



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John T

01-02-2007 18:44:46




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 Re: john deere a distributor coil in reply to 1948_Deere, 01-02-2007 15:43:26  
1948, Im NOT tryign to sell them or anything BUTTTTT TT its my understanding and opinion they are indeed better then a less expensive OEM type of stock coil, they likely have better magnetic material and better windings and insulations n wire etc to improve their efficiency with better mutual inductive coupling between the primary and secondary so theres less heat losses and more efficient energy transfer. I.E. THEY ARE INDEED BETTER

HOWEVER they are for sure designed so they have the capacity and capability to achieve HIGHER secondary voltages (say 40KV) then the cheaper lower voltage rated stock coils (say 15KV). They are really designed to get the most bang for the buck and and can store more energy and pass more energy along for discharge across the plugs gap (for better combustion initiation) WHEN COUPLED WITH AN ELECTRONIC SWITCH rated for more switching current versus the old fashioned points n condensor.

HERES THE DEAL if you still use points n condensor youre not gonna gain much in performance increase over the stock coil OTHER THEN they are likely more efficient so there may be a lil more spark energy and a lil less heat losses versus the stock coil ALSO CAUTION some are lower impedance and designed ONLY for electronic ignitions in which case use of them with points will overcurrent the points normal switching current and they will burn up prematurely and the spark will be very weak.....

To get the most bang for the buck and utilize the advantages and higher energy n higher voltage available out of those high performance coils THEY NEED TO BE MATCHED UP WITH AN ELECTRONIC IGNITION.

If the compression n fuel n plug gap is the same THAT FLAME THROWER COIL WOULD STILL FIRE THE PLUG AT THE SAME APPROXIMATE VOLTAGE AS THE STOCK COIL. Its just that they have the ability when n where needed like at higher compression or wider plug gaps to achieve the higher voltages necessary to still arc current across a wider plug gap where the stock coil could not fire at all.

BOTTOM LINE

YES they are better NO they wont help much if you still use points YES they can help a lot if matched up with an elec ignition. CAUTION if they are of too low primary impedance (designed for elec ignition) they will burn up the points YES if the plug gap is widened and/or the compression is raised too high, they can still achieve a higher voltage necessary to fire a plug where a stock coil may fail.

Clear as muddddd ????? ???//

Ol John T and all in Indiana

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Dave in SV

01-04-2007 06:07:07




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 Re: john deere a distributor coil in reply to John T, 01-02-2007 18:44:46  
Is there an electronic ignition mod kit available? Having that would increase the advantages of a Flamethrower, right? I have a '49 A.



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