MSD 7730 question

[mathblais]

Planning on installing a 7730 PowerGrid next summer. And I do have some questions about actual setup.

First question, is what do I do with HEI distributor? I would suppose I need to lock both mech & vacuum advance so it doesn't mess up the timing curve programmed in powergrid.

Second question, is what's the best suggestion to get start up timing curve? Best idea i have is to kinda write down current timing with timing gun then start from there?

Quick Car specs:
pontiac v8 engine
hei distributor
msd 6al
2 stage nitrous (might wait a bit before turning that on!)
transbrake
line lock

[msdtech1955]

First question, is what do I do with HEI distributor? I would suppose I need to lock both mech & vacuum advance so it doesn't mess up the timing curve programmed in powergrid.

depends on what timing changes you are doing (if retarding the timing more then 15 degrees)

[msdtech1955]

Second question, is what's the best suggestion to get start up timing curve? Best idea i have is to kinda write down current timing with timing gun then start from there?

yes, you could do that ...but that will have to be something you can play with to see what the motor likes.

7730 launch retard web.jpg

7730 start retard jpeg.JPG

[mathblais]

Originally Posted by msdtech1955

depends on what timing changes you are doing (if retarding the timing more then 15 degrees)

Well I would kinda like to remove those mechanical & vacuum anyway, would that be a problem. Was even thinking of going full EFI anyway...

[msdtech1955]

unfortunately, the h.e.i. does not have an adjustable rotor for phasing....
so. i would look into a billet distributor...8563
and a 84211 rotor

[mathblais]

Originally Posted by msdtech1955

unfortunately, the h.e.i. does not have an adjustable rotor for phasing....
so. i would look into a billet distributor...8563
and a 84211 rotor

so if I understand currectly, in order to get rid of mechanical & vacuum and only use the programmed curve within the powergrid 7730, I would also need the billet distributor and the 84211 rotor? Do I absolutely need a crank trigger?

And then is there any instruction I could get in order to figure everything out and be ready for the transition.

I still don't understand why I would need that distributor? Can't i achieved the same thing with standard distributor?

[msdtech1955]

And then is there any instruction I could get in order to figure everything out and be ready for the transition.

I still don't understand why I would need that distributor? Can't i achieved the same thing with standard distributor?

your changing the timing electronically...( from 20 to a 30 degree curve)
so proper rotor phasing is needed.

www.msdvideos.com ( rotor phasing and checking timing)

also, the timing will be more accurate with a cranktrigger .

Well I would kinda like to remove those mechanical & vacuum anyway, would that be a problem. Was even thinking of going full EFI anyway...
11-13-2012 10:28 AM

if you go e.f.i.....you will need to do the same thing ( what ever is controlling the timing curve)

[msdtech1955]

And then is there any instruction I could get in order to figure everything out and be ready for the transition.

depends on the number of degrees your using for the timing curve.
and also , if you go efi....( what unit your using and the requirements of parts to make it work )

( crank trigger -cam sync---etc.)

[mathblais]

ok so if I would want to go progressively I could start with
1 - distributor & rotor & power grid
2 - crank trigger

Is that correct?

[msdtech1955]

yes.

http://www.msdignition.com/product.a...031&terms=7730

http://www.msdignition.com/product.a...691&terms=8563

http://www.msdignition.com/product.a...575&terms=8650