Intial Starting Issues

[FAT-245]

Hey Guys,

Im having some Issues starting the Motor In the Car for the first time.

Ill give you guys a rundown on the engine,
It was Started on the Dyno, Run In on the Dyno Totaling 10 Hours of Load.

The Issue is, the Engine will Fire then DIE Straight away and Backfire out of the Carburettor, Lighting any fuel in the intake and just sit there alight (Scares the **** out of me!)

I put the Dizzy in By,
Turning #1 to TDC After the Intake Valve Closes, Lining up the Balancer with 0 Degree's and Dropping in the dizzy.

What I then do, is turn the Balancer to 10 Degree's BTDC and Turn the Housing of the Distributor so the Rotor Button Lines up with the #1 Terminal on the Cap and start my Firing order Clockwise from there (1,5,3,6,2,4).

Carburettor is a Holley 650CFM, Ignition is the Standard Bosch Electronic Distributor and an MSD 6AL Box with a Blaster 2 Coil.

Fuel system is a Holley Blue, with the Supplied Reg. -8 Lines from the tank to the reg and -8 from the Reg to the Holley.

I Have Spent two Nights on this and I am starting to get frustrated.

Please Help Mopar Guru's!

 

[goldduster318]

well, I'll admit I don't know the first thing about Hemi I-6's, but are you sure the distributor rotates clockwise when cranked? Because it certainly seems like you have a firing order/timing issue.

 

[FAT-245]

Hrmm, Ill check it out.

The Manual says it goes clockwise. I might have to do some more investigation!

 

[george]

Dont know squat about aussie hemi sixes, but it sounds like the distributor might be 180. Does it actually start & run for a bit, or just kind of catch & then backfire? If its the latter, its probably in 180.

 

[FAT-245]

fires, then immediately backfires this lasts no longer than 4-5seconds

 

[george]

Sure sounds like its in 180 to me, ie firing on the intake stroke.

 

[FAT-245]

Ok Guys,

I wound more Initial into the Motor and it fried. Standard is 5 but i had to go to roughly 12-15 to get it to fire.

Cam Specs:

Intake Centerline of 115.50 Degrees ATDC
Exhaust Centerline of 112.50 Degrees BTDC
Overlap of 63.00
Intake Duration of 291
Exhaust Duration of 291

 

[MopaR&D]

Just keep cranking it while advancing the dizzy ever so slightly and it should fire. You'll know if you've gone too far when the engine starts kicking back against the starter and slowing it down.