Base Ignition Map Required - Ford V8

[Andy Green]

Hi Guys,
I’ve getting close to starting my engine (Ford 302, Edelbrock heads & mild cam & 8-stack throttle bodies, Specialist Components ECU, which uses a speed vs throttle for mapping). The engine will be going on a rolling road to map it, but I could do with a basic ignition map as a starting point, basically so we don’t do anything stupid!
So if anyone’s got a Motec, Megasquirt, DTA map, as an Excel file or a screen dump, I’d really appreciate it

Regards,
Andy

 

[Andrew Robertson]

Hi,

pump gas MPEFI 383 chev running link G4 sequential ECU, mild hyd roller cam, 10.5cr, edelbrock heads, operating range idle to 6k, fine tuned over 5 years of operation.

Timing < 400rpm all MAP values (i.e. cranking) 10 degrees

Timing no load (i.e. at MAP values where the engine idles or operates at no load when revved up) 30BTDC at idle rising to a max of 50BTDC by 2000rpm, 50 for all values above 2000

Timing at MAP 100 (i.e. wide open throttle), 20BTDC at 1000rpm rising to 34BTDC by 3000, 34 for all values above 3000.

Linear interpolation between no load and WOT in each RPM column to fill out the table.

That should get you in the ballpark.

Cheers, Andrew

 

[Robert May Eng.]

Hi Guys,
I’ve getting close to starting my engine (Ford 302, Edelbrock heads & mild cam & 8-stack throttle bodies, Specialist Components ECU, which uses a speed vs throttle for mapping). The engine will be going on a rolling road to map it, but I could do with a basic ignition map as a starting point, basically so we don’t do anything stupid!
So if anyone’s got a Motec, Megasquirt, DTA map, as an Excel file or a screen dump, I’d really appreciate it

Regards,
Andy

If I were you Andy I would run the thing up for an hour or so on a carb and normal distributor. Trying to set up an empty mappable ecu is the cruelest thing you can do to a fresh engine. I have lost a new engine in the rollers doing exactly this with stacks and that was with Dave Walker from Emerald Cams at the helm. During mapping it leaned out and wiped a piston out. Anyway I have a map on a floppy disc but I dont know if it of any use to you . I will see if i can find it.

Bob

 

[Mick]

Hi Andy,
I am running a Motec M48 on 302. On top I have 48mm tb running Lunati roller cam part no. 51012, 112 deg. Lobe separation, advertised duration 290 deg on intake & 300 deg on exhaust. Injectors are Bosch (can't remember number)
Thanks to a few of the boys on the forum after a recent rebuild and supply of a couple of maps got the basics done on then onto the dyno for fine tuning managed 413 RWHP and 464 torques 6500 rpm.

Send me you email and I will email the Motec map I use. It runs perfectly given the cam profile. I can talk you through the fine points of the mapping via email. Obviously TB size injector size & cam will make a difference and you should have it properly tuned on the dyno.

Mick

 

[Andy Green]

Hi Andrew,
Many thanks, that’s just the type of info I was after, even if it is from a Chevy engine :laugh:

Hi Bob,
I understand your sentiments and this was my original plan of action when I first started this project. I’ve actually got a base fuel & spark map from my ECU provider to get me going, but knowing the spark limit of an engine, stops me running it into knock. The ECU runs a wide band oxygen sensor, so should stop it running it lean and my mate who’s helping in this area does this work for a living, so I should be all right

Hi Mick,
A base Motec file would be really useful. The Edelbrock cam I’m running is very mild (204 deg on intake & 214 deg on exhaust), but should still give around 330hp with a really flat torque curve

I’ve PM’d my email address

Regards,
Andy

 

[Tye GT40]

Hi Andy,

Here is the ignition map derived from a 5.0 HO. I use it in mildly ported engine. It can serve as a good starting point for you.

Regards
Henrik

 

[Mick]

Andy emailed 2 x maps let me know if you have any problem.

Mick