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Matt's Megajolt guide


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#181 Retro_10s

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Posted 24 November 2008 - 05:46 PM

hmmmm now i'm planning building a special 998 up and at first considered Megajolt to be a Mega pain in the arse.

But I've just sat and read through the whole thread,.. it's not so scary after all >_<

I believe i might come across the same problem that Ethel did, as I have a Belt drive kit to replace the Timing chain.

#182 seb79

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Posted 05 December 2008 - 03:35 PM

hi

about the tacho of the dashboard. What we can do on the wiring in order to read rpm on classic tacho.

V4 spec.

thanks for advice and tipes

#183 The Matt

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Posted 05 December 2008 - 07:40 PM

You should be able to use the output on the back of the Megajolt for your tacho (rev counter). There is a picture on the first page of this thread.

#184 seb79

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Posted 05 December 2008 - 08:29 PM

you fit your wiring lom used forthe original coil (-) directly on this output and nothing else ? on the megajolt forum, they talk about problem to use their tacho. Did you refit your own tacho like you advice and nothing else ... i use the nippon tacho and gauge from last mini '90 's

#185 seb79

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Posted 07 December 2008 - 11:49 AM

up

#186 The Matt

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Posted 07 December 2008 - 02:53 PM

I ran a fresh wire from the output on the Megajolt to the back of my dash, then ran another fresh +ve wire into the tacho with a 5A fuse inline IIRC.
But I guess that's the same as using the original -ve coil wire that goes to the tacho really.

#187 Ethel

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Posted 07 December 2008 - 03:21 PM

hmmmm now i'm planning building a special 998 up and at first considered Megajolt to be a Mega pain in the arse.

But I've just sat and read through the whole thread,.. it's not so scary after all >_<

I believe i might come across the same problem that Ethel did, as I have a Belt drive kit to replace the Timing chain.


Belt kit made it easier for me if anything - depends where you're planning on putting the tooth wheel, as long as it's not between the fanbelt pulley and engine you'll be fine.

#188 seb79

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Posted 07 December 2008 - 07:41 PM

could you fit the white and black wire from the original coil to the rev counter gauge of the edis in order to got rpm on original 3 clocks ?

#189 danboy

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Posted 08 December 2008 - 02:30 PM

ive got a mini that had a megajolt v4 already fitted ..but it has no lead to conect to me lap top....where would i get one...thanx

#190 miniboo

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Posted 08 December 2008 - 06:01 PM

could you fit the white and black wire from the original coil to the rev counter gauge of the edis in order to got rpm on original 3 clocks ?


Yes it should work. if not try taking the feed form the pip signal.

Read this: http://www.autosport...Out_on_the_MJLJ

#191 miniboo

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Posted 08 December 2008 - 06:02 PM

ive got a mini that had a megajolt v4 already fitted ..but it has no lead to conect to me lap top....where would i get one...thanx


try this: http://www.autosport...-mjlj-p-43.html

#192 seb79

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Posted 09 December 2008 - 04:58 PM

about the shift light, i wish to know what you think about a led buld of 5 w like we can find on this web site (for the V4)
http://www.superbrig...brake-turn.html

#193 Ethel

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Posted 09 December 2008 - 05:17 PM

Not sure the MJ will put out enough current to drive all of those bulbs - spec's on line

#194 The Matt

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Posted 09 December 2008 - 08:01 PM

I gues you could drive it through a suitable relay though?

#195 seb79

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Posted 09 December 2008 - 08:25 PM

I (amper) = P (watts) / U (volts)

so 5 watts / 12 = 0,416 A

or 21 / 12 = 1,75 A so without resistance, it 's not usuable

For a 5 watts bulbs with leds, we got 0,416 A enought for a shift light ?
the shift light output, can drive 500 mA.

As fas as I'm concerned, this kind of led bulb could be great ! a realy for this you believe ?




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