are you happy with what it did for your heep?


"Jumpin' Jiminy" <jumpin_jiminy72plus3@hotmail.com> wrote in message
news:qelmb11b1k534bs9oid3rb5ei09o410sg5@4ax.com...
> On Tue, 21 Jun 2005 23:00:47 GMT, "Pi-Eyed Piper" <notta@hello.com>
> wrote:
>
>>So what are some spark options after I get done my HEI install this
>>weekend?
>>Is it a really bad idea to run 7MM wires?
>>
>>thanks
>>
>
> I upgraded my 85 cj7 to an HEI and the best advice I can give you is
> to power the HEI directly from the battery and switch it with a relay.
> I mounted my relay beside the starter solenoid and used the +12v
> connector on the solenoid for a power source.
> The difference from running it off the switched power circuit is very
> noticeable.
> I don't know about the 7mm wires though. It can only result in a drop
> in performance so why bother.
> Other issues I had were with the oil dipstick placement and an overly
> efficient relay that would stay powered on at 7v. This meant there was
> enough residual from the alternator to keep it energized. Wiring it to
> the other switched 12v cct meant no spark when cranking over. I solved
> this with a diode OR to the starter solenoid. This circuit becomes
> freed up when you lose the old ignition.
> I presume you have the needed gear? The gear from my old distributor
> had too large a diameter hole and was unuseable. I have heard that
> with some distributors the old gear just has to be ground down.
> This wasn't true in my case.
> I'm tempted to try the Crane adjustable centrifugal advance kit. It's
> supposed to increase the power band a bit.
>
> JJ
>

 

are you happy with what it did for your heep?


"Jumpin' Jiminy" <jumpin_jiminy72plus3@hotmail.com> wrote in message
news:qelmb11b1k534bs9oid3rb5ei09o410sg5@4ax.com...
> On Tue, 21 Jun 2005 23:00:47 GMT, "Pi-Eyed Piper" <notta@hello.com>
> wrote:
>
>>So what are some spark options after I get done my HEI install this
>>weekend?
>>Is it a really bad idea to run 7MM wires?
>>
>>thanks
>>
>
> I upgraded my 85 cj7 to an HEI and the best advice I can give you is
> to power the HEI directly from the battery and switch it with a relay.
> I mounted my relay beside the starter solenoid and used the +12v
> connector on the solenoid for a power source.
> The difference from running it off the switched power circuit is very
> noticeable.
> I don't know about the 7mm wires though. It can only result in a drop
> in performance so why bother.
> Other issues I had were with the oil dipstick placement and an overly
> efficient relay that would stay powered on at 7v. This meant there was
> enough residual from the alternator to keep it energized. Wiring it to
> the other switched 12v cct meant no spark when cranking over. I solved
> this with a diode OR to the starter solenoid. This circuit becomes
> freed up when you lose the old ignition.
> I presume you have the needed gear? The gear from my old distributor
> had too large a diameter hole and was unuseable. I have heard that
> with some distributors the old gear just has to be ground down.
> This wasn't true in my case.
> I'm tempted to try the Crane adjustable centrifugal advance kit. It's
> supposed to increase the power band a bit.
>
> JJ
>

 

are you happy with what it did for your heep?


"Jumpin' Jiminy" <jumpin_jiminy72plus3@hotmail.com> wrote in message
news:qelmb11b1k534bs9oid3rb5ei09o410sg5@4ax.com...
> On Tue, 21 Jun 2005 23:00:47 GMT, "Pi-Eyed Piper" <notta@hello.com>
> wrote:
>
>>So what are some spark options after I get done my HEI install this
>>weekend?
>>Is it a really bad idea to run 7MM wires?
>>
>>thanks
>>
>
> I upgraded my 85 cj7 to an HEI and the best advice I can give you is
> to power the HEI directly from the battery and switch it with a relay.
> I mounted my relay beside the starter solenoid and used the +12v
> connector on the solenoid for a power source.
> The difference from running it off the switched power circuit is very
> noticeable.
> I don't know about the 7mm wires though. It can only result in a drop
> in performance so why bother.
> Other issues I had were with the oil dipstick placement and an overly
> efficient relay that would stay powered on at 7v. This meant there was
> enough residual from the alternator to keep it energized. Wiring it to
> the other switched 12v cct meant no spark when cranking over. I solved
> this with a diode OR to the starter solenoid. This circuit becomes
> freed up when you lose the old ignition.
> I presume you have the needed gear? The gear from my old distributor
> had too large a diameter hole and was unuseable. I have heard that
> with some distributors the old gear just has to be ground down.
> This wasn't true in my case.
> I'm tempted to try the Crane adjustable centrifugal advance kit. It's
> supposed to increase the power band a bit.
>
> JJ
>

 

Always use the spark plugs designed for the engine. You see the
electrode is at different lengths to place the initial combustion
ignition at a point, otherwise the explosion will bounce all over the
place, burning holes in the piston along with an annoying ping. And I
think I would use the same .025" gap, but use the heavier wires.
Remember not to touch them with oily fingers, whatever they use devolves
in it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Pi-Eyed Piper wrote:
>
> So are stock wires enough? Do I just regap my stock plugs, or get the plug
> reccomended for that year GM vehicle the HEI came out of?

 

Always use the spark plugs designed for the engine. You see the
electrode is at different lengths to place the initial combustion
ignition at a point, otherwise the explosion will bounce all over the
place, burning holes in the piston along with an annoying ping. And I
think I would use the same .025" gap, but use the heavier wires.
Remember not to touch them with oily fingers, whatever they use devolves
in it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Pi-Eyed Piper wrote:
>
> So are stock wires enough? Do I just regap my stock plugs, or get the plug
> reccomended for that year GM vehicle the HEI came out of?

 

Always use the spark plugs designed for the engine. You see the
electrode is at different lengths to place the initial combustion
ignition at a point, otherwise the explosion will bounce all over the
place, burning holes in the piston along with an annoying ping. And I
think I would use the same .025" gap, but use the heavier wires.
Remember not to touch them with oily fingers, whatever they use devolves
in it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Pi-Eyed Piper wrote:
>
> So are stock wires enough? Do I just regap my stock plugs, or get the plug
> reccomended for that year GM vehicle the HEI came out of?

 

Always use the spark plugs designed for the engine. You see the
electrode is at different lengths to place the initial combustion
ignition at a point, otherwise the explosion will bounce all over the
place, burning holes in the piston along with an annoying ping. And I
think I would use the same .025" gap, but use the heavier wires.
Remember not to touch them with oily fingers, whatever they use devolves
in it.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Pi-Eyed Piper wrote:
>
> So are stock wires enough? Do I just regap my stock plugs, or get the plug
> reccomended for that year GM vehicle the HEI came out of?

 

I'm very happy with the upgrade. It idles a lot smoother, especially
when damp out. I get more power at low end and this means I don't have
to drop a gear when crawling along in 2nd and I need a surge of power.
My gas mileage has also improved.
I still had a lot of problems with my Champion plugs.
As far as I am concerned Copper Champs are a POS.
I crossed over to a set of Autolites and they are performing reliably.

With the HEI you should regap your plugs to at least .045" to take
advantage of the fatter spark.

JJ


On Fri, 24 Jun 2005 17:30:55 GMT, "Pi-Eyed Piper" <notta@hello.com>
wrote:

>are you happy with what it did for your heep?
>
>
>"Jumpin' Jiminy" <jumpin_jiminy72plus3@hotmail.com> wrote in message
>news:qelmb11b1k534bs9oid3rb5ei09o410sg5@4ax.com.. .
>> On Tue, 21 Jun 2005 23:00:47 GMT, "Pi-Eyed Piper" <notta@hello.com>
>> wrote:
>>
>>>So what are some spark options after I get done my HEI install this
>>>weekend?
>>>Is it a really bad idea to run 7MM wires?
>>>
>>>thanks
>>>
>>
>> I upgraded my 85 cj7 to an HEI and the best advice I can give you is
>> to power the HEI directly from the battery and switch it with a relay.
>> I mounted my relay beside the starter solenoid and used the +12v
>> connector on the solenoid for a power source.
>> The difference from running it off the switched power circuit is very
>> noticeable.
>> I don't know about the 7mm wires though. It can only result in a drop
>> in performance so why bother.
>> Other issues I had were with the oil dipstick placement and an overly
>> efficient relay that would stay powered on at 7v. This meant there was
>> enough residual from the alternator to keep it energized. Wiring it to
>> the other switched 12v cct meant no spark when cranking over. I solved
>> this with a diode OR to the starter solenoid. This circuit becomes
>> freed up when you lose the old ignition.
>> I presume you have the needed gear? The gear from my old distributor
>> had too large a diameter hole and was unuseable. I have heard that
>> with some distributors the old gear just has to be ground down.
>> This wasn't true in my case.
>> I'm tempted to try the Crane adjustable centrifugal advance kit. It's
>> supposed to increase the power band a bit.
>>
>> JJ
>>
>

 

I'm very happy with the upgrade. It idles a lot smoother, especially
when damp out. I get more power at low end and this means I don't have
to drop a gear when crawling along in 2nd and I need a surge of power.
My gas mileage has also improved.
I still had a lot of problems with my Champion plugs.
As far as I am concerned Copper Champs are a POS.
I crossed over to a set of Autolites and they are performing reliably.

With the HEI you should regap your plugs to at least .045" to take
advantage of the fatter spark.

JJ


On Fri, 24 Jun 2005 17:30:55 GMT, "Pi-Eyed Piper" <notta@hello.com>
wrote:

>are you happy with what it did for your heep?
>
>
>"Jumpin' Jiminy" <jumpin_jiminy72plus3@hotmail.com> wrote in message
>news:qelmb11b1k534bs9oid3rb5ei09o410sg5@4ax.com.. .
>> On Tue, 21 Jun 2005 23:00:47 GMT, "Pi-Eyed Piper" <notta@hello.com>
>> wrote:
>>
>>>So what are some spark options after I get done my HEI install this
>>>weekend?
>>>Is it a really bad idea to run 7MM wires?
>>>
>>>thanks
>>>
>>
>> I upgraded my 85 cj7 to an HEI and the best advice I can give you is
>> to power the HEI directly from the battery and switch it with a relay.
>> I mounted my relay beside the starter solenoid and used the +12v
>> connector on the solenoid for a power source.
>> The difference from running it off the switched power circuit is very
>> noticeable.
>> I don't know about the 7mm wires though. It can only result in a drop
>> in performance so why bother.
>> Other issues I had were with the oil dipstick placement and an overly
>> efficient relay that would stay powered on at 7v. This meant there was
>> enough residual from the alternator to keep it energized. Wiring it to
>> the other switched 12v cct meant no spark when cranking over. I solved
>> this with a diode OR to the starter solenoid. This circuit becomes
>> freed up when you lose the old ignition.
>> I presume you have the needed gear? The gear from my old distributor
>> had too large a diameter hole and was unuseable. I have heard that
>> with some distributors the old gear just has to be ground down.
>> This wasn't true in my case.
>> I'm tempted to try the Crane adjustable centrifugal advance kit. It's
>> supposed to increase the power band a bit.
>>
>> JJ
>>
>

 

I'm very happy with the upgrade. It idles a lot smoother, especially
when damp out. I get more power at low end and this means I don't have
to drop a gear when crawling along in 2nd and I need a surge of power.
My gas mileage has also improved.
I still had a lot of problems with my Champion plugs.
As far as I am concerned Copper Champs are a POS.
I crossed over to a set of Autolites and they are performing reliably.

With the HEI you should regap your plugs to at least .045" to take
advantage of the fatter spark.

JJ


On Fri, 24 Jun 2005 17:30:55 GMT, "Pi-Eyed Piper" <notta@hello.com>
wrote:

>are you happy with what it did for your heep?
>
>
>"Jumpin' Jiminy" <jumpin_jiminy72plus3@hotmail.com> wrote in message
>news:qelmb11b1k534bs9oid3rb5ei09o410sg5@4ax.com.. .
>> On Tue, 21 Jun 2005 23:00:47 GMT, "Pi-Eyed Piper" <notta@hello.com>
>> wrote:
>>
>>>So what are some spark options after I get done my HEI install this
>>>weekend?
>>>Is it a really bad idea to run 7MM wires?
>>>
>>>thanks
>>>
>>
>> I upgraded my 85 cj7 to an HEI and the best advice I can give you is
>> to power the HEI directly from the battery and switch it with a relay.
>> I mounted my relay beside the starter solenoid and used the +12v
>> connector on the solenoid for a power source.
>> The difference from running it off the switched power circuit is very
>> noticeable.
>> I don't know about the 7mm wires though. It can only result in a drop
>> in performance so why bother.
>> Other issues I had were with the oil dipstick placement and an overly
>> efficient relay that would stay powered on at 7v. This meant there was
>> enough residual from the alternator to keep it energized. Wiring it to
>> the other switched 12v cct meant no spark when cranking over. I solved
>> this with a diode OR to the starter solenoid. This circuit becomes
>> freed up when you lose the old ignition.
>> I presume you have the needed gear? The gear from my old distributor
>> had too large a diameter hole and was unuseable. I have heard that
>> with some distributors the old gear just has to be ground down.
>> This wasn't true in my case.
>> I'm tempted to try the Crane adjustable centrifugal advance kit. It's
>> supposed to increase the power band a bit.
>>
>> JJ
>>
>