megajolt for discovery

v8dolphin · Post by **v8dolphin** » Sun Jun 20, 2010 5:52 pm

after many hours of looking at this forum and others i have finally ordered a megajolt kit for my disco. I decided to use megajolt over megasqurt only on cost and i hardly ever use petrol (i sell lpg ).However i do have a question do i need to keep the disc shaped thing behind the damper on my sepintine 3.9 or can i just get rid of it and fit the trigger wheel behind the damper ?

ChrisJC · Post by **ChrisJC** » Mon Jun 21, 2010 7:02 am

The disc is a mud deflector, it's not fitted on the car applications of the V8 anyway, so you can ditch it.

Chris.

DaveEFI · Post by **DaveEFI** » Mon Jun 21, 2010 7:19 am

ChrisJC wrote:The disc is a mud deflector, it's not fitted on the car applications of the V8 anyway, so you can ditch it.

Chris.

My SD1 has something very like this as part of the steering pump pulley. Which made it impossible to fit a trigger wheel between it and the block.

Eliot · Post by **Eliot** » Mon Jun 21, 2010 12:05 pm

I would examine the disk on the back lip - as some engines (i'm thinking the tvr 5l engine) has a weight added to it.

Photo's of adding the thin ford 36-1 steel disk to a serpentine setup can be found here:
http://www.mez.co.uk/ms11.html

v8dolphin · Post by **v8dolphin** » Mon Jul 12, 2010 7:00 am

small problem again fitted trigger wheel with correct 5 teeth on wheel at tdc running on gas to start and geating 40' of advance with edis alone help

Eliot · Post by **Eliot** » Mon Jul 12, 2010 11:10 am

v8dolphin wrote:small problem again fitted trigger wheel with correct 5 teeth on wheel at tdc running on gas to start and geating 40' of advance with edis alone help

Your post isn't very clear.

Quagmire · Post by **Quagmire** » Mon Jul 12, 2010 11:42 am

Did you set it so that the missing tooth is 5 teeth before TDC?

Basically you need to set the engine to TDC using your preferred method.

Then all you need to do is set the wheel so that the sensor is aligned as centrally as possible with the 5th tooth anticlockwise from the missing tooth (when looking at the front of the engine).

Depending on where your sensor mount is, this could be anywhere. The actual position of the sensor and missing tooth around the wheel is not important, as long as they are in the correct relationship to each other and the engine is defintely at TDC when you set it all up.

If you are 40deg advanced, sounds like you might have the missing tooth at 90 degrees to the sensor when engine at TDC? This would be correct for an EDIS4.

Diagram here:

http://www.autosportlabs.net/MJLJ_V4_ve ... stallation

ChrisJC · Post by **ChrisJC** » Mon Jul 12, 2010 12:10 pm

I found the animated image very hard to work out, easy to misinterpret I would say.....

Chris.

Quagmire · Post by **Quagmire** » Mon Jul 12, 2010 12:26 pm

A pause button would be handy!

v8dolphin · Post by **v8dolphin** » Tue Jul 13, 2010 7:56 am

thankyou for all you help.the engine is now running at 10' advance on edis .The problem was i had used pin no2 to switch gas ecu removed this and use 4diode wire from coils to drive it all works ok.Now to next stage todayget laptop to talk to megajolt wish me luck.