Megajolt system

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70spider
Posts: 676
Joined: Fri Mar 14, 2014 3:05 pm
Your car is a: 1970 Fiat spider
Location: N.E. New Mexico

Megajolt system

Post by 70spider »

I am having a bit of an issues with my distributor, I got a new one from mrfiat last spring but it was a bit different than the original and wouldn't work with the Petronix I got from AutoRicambi. So I pilfered the advance springs off the new one and put them on the old one. It works ok but I was looking to upgrade. I found this megajolt system http://trigger-wheels.com/store/contents/en-uk/d54.html, does anyone have this system on their Spider?
1970 Fiat Spider 124 Sport aka "Pesto"
2002 Mazda Protege5
2013 Buddy 170i
klweimer
Posts: 550
Joined: Tue Mar 27, 2012 7:45 am
Your car is a: 1982 Spider 2000
Location: Arvada, Colorado

Re: Megajolt system

Post by klweimer »

Hi 70spider,

For that kind of money, I'd get the custom Computronix electronic ignition for your Spider from Mark at Allison's Automotive. I put that in my '82 2000 and it works like a champ.

Kirk
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70spider
Posts: 676
Joined: Fri Mar 14, 2014 3:05 pm
Your car is a: 1970 Fiat spider
Location: N.E. New Mexico

Re: Megajolt system

Post by 70spider »

I probably will if the stars line up and he has the unit and I have the cash for it at the same time :D . I was just asking about the Megajolt to see what others thought. I am not looking to buy until October anyways.
1970 Fiat Spider 124 Sport aka "Pesto"
2002 Mazda Protege5
2013 Buddy 170i
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FiatMac
Posts: 290
Joined: Sat Aug 01, 2009 1:14 pm
Your car is a: 1982 2000 Spider
Location: Salisbury, North Carolina

Re: Megajolt system

Post by FiatMac »

70spider wrote:I am having a bit of an issues with my distributor, I got a new one from mrfiat last spring but it was a bit different than the original and wouldn't work with the Petronix I got from AutoRicambi. So I pilfered the advance springs off the new one and put them on the old one. It works ok but I was looking to upgrade. I found this megajolt system http://trigger-wheels.com/store/contents/en-uk/d54.html, does anyone have this system on their Spider?
See this Forum thread for info on some members use of the Megajolt system:
http://www.fiatspider.com/f15/viewtopic ... t=megajolt

You can purchase MegaJolt components in the US direct from Autosports Labs or one of their dealers
https://www.autosportlabs.com/

The beauty of the system is that it is programmable for temperature, load and rpm, thus allowing the timing to be optimized. There is no one curve/map that is optimal for any engine. Old distributor/mechanically based systems cannot allow for the non-linearity of an optimized system. But you have to have the patience and mindset required to do the optimization.

And yes it will likely be more expensive. Just depends on what you are after.

Additional technical info.
https://www.autosportlabs.net/MegaJolt_Lite_Jr.
Stan McConnell
Retired Mechanical Engineer
Salisbury, North Carolina
82 2000 Spider (driving)
78 124 Spider on the rotisserie
76 124 Spider parts car or possible Lemons racer
83 parts car
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