PDA

View Full Version : Spitfire megajolt for spitfire



MrT
07-30-2009, 07:51 PM
I am installing a megajolt system on my spit, any thoughts?
I am running 11:1 comp. quad kehin carbs, stage 2 engine and cam. headers . Mr.T <span style="font-weight: bold"> </span>

SilentUnicorn
08-05-2009, 07:24 PM
Keep the shiny side up?


m

DanB
08-05-2009, 08:32 PM
It will give you much more control of how your engine runs, but unless you are willing to spend some time with a steep learning curve it will be tough. I have a Megasquirt on my TR4A. We did the EFI conversion about a year ago and I just now have it to where it is driving well. My brother did the timing. He has experience with Megaquirts. Let us know how it works out.

Dan B
South Charleston, WV

66 TR4AIRS EFI
80 TR7 DHC

SpitBang
08-07-2009, 04:25 AM
I would say go for it, I've not looked back since fitting Megajolt to my GT6, it's so much easier than Megasquirt to setup.

Best to start with a basic map and then tune it to suit your engine. There are a number of useful maps here (https://www.sideways-technologies.co.uk/forum/Blah.pl?m-1202839594/s-0/) and more information of a install on a Spitfire here (https://www.autosportlabs.org/viewtopic.php?t=2126)

IanF
08-12-2009, 10:10 AM
Check out the North American Spitfire Squadron and well as a recent issue of Spitfire &amp; GT6 magazine. The guy who wrote the article in the magazine is a NASS member in MD.

tdskip
08-12-2009, 10:25 AM
I would say go for it, I've not looked back since fitting Megajolt to my GT6, it's so much easier than Megasquirt to setup.


What accounts for the Megajolt being easier to dial-in than a Megasquirt. Not disagreeing with you, just curious as to why.

SpitBang
08-12-2009, 02:53 PM
What accounts for the Megajolt being easier to dial-in than a Megasquirt. Not disagreeing with you, just curious as to why.


Megajolt, due to being only a ignition system, has many fewer variables, ignition advance with respect to RPM and manifold vacuum or throttle position.

Megasquirt is a combined ignition and electronic fuel injection (EFI) system, so in addition to the ignition variables, you have a similar map for the fuelling, which is again varied to a certain extent by the engine conditions, coolant temperature, air mass etc.
There is a write up on the basics of how to tune a megasuirt engine here (https://www.megamanual.com/ms2/tune.htm)

I'm quite sure I know which one I would rather setup :smile:

70herald
08-13-2009, 01:19 AM
If you are serious about this, go to Dave Sideways forum (to visit! stick around here also : . There are a few people over there with megajolt systems on their spits.

https://www.sideways-technologies.co.uk/forum/Blah.pl? (https://www.sideways-technologies.co.uk/forum/Blah.pl)