need help with plugs

[i8urSS]

I'm new to the SN-95 cobras. I was running NGK iridium plugs in my terminator and was wondering if those are good in these cars too? Didn't know if there was something that responded better in a NA cobra. I have 98 with 70k miles and basic bolt ons. CAI, LT's, O/R X and flowmasters. I also have MSD coil packs and wires if that makes a difference.

Just bought the car last week and it seems like its missing a little at idle and its def missing at WOT. So I figure I'll change the plugs and all the fluids just so I have a nice baseline of where the car is.

 

[Tabres]

The most recommended plug for a mild bolt-on, N/A car tends to be Autolite 764's with a gap of .054.

Personally, I'm going to bet it's the MSD coil-packs, though. They're somewhat notorious for poor performance and causing a miss. I would replace them with factory Ford replacement coil-packs.

 

[i8urSS]

Good to know. I never would've thought that. Thanks for the info.

 

[laddanator]

Honestly, Ford OEM parts are hard to beat on allot of things. Coil packs being one of them.

 

[STAMPEDE3]

What they said^^

 

[SVTCOBRA9629]

^^ I to pulled my MSD coils they were the cause for the miss on my cobra. Stick with stock Coils and maybe some frpp wires.

 

[THE RED 1]

I use ngk tr-6's or tr-55 gapped at .035-.040 Im COP swapped using motorcraft coils. OEM> NOT OEM

 

[racecougar]

I use ngk tr-6's or tr-55 gapped at .035-.040

There's no need to run less than the stock 0.054" gap on a mild NA setup.

 

[THE RED 1]

There's no need to run less than the stock 0.054" gap on a mild NA setup.[/QUOTE

Its funny cause I used to gap them at about .050 or so then one of my buddies swore up and down that's to big and recommended .035 so I gave that a shot LOL

 

[STAMPEDE3]

Blown or spray but not N/A

 

[i8urSS]

Thanks for all the info.

Are the coil packs the same on the GT and Cobra and when I replace them do I need to reset the computer or get it retuned or anything like that?

 

[racecougar]

Thanks for all the info.

Are the coil packs the same on the GT and Cobra and when I replace them do I need to reset the computer or get it retuned or anything like that?

The coil packs are the same between the 2V and 4V's. The later COP coils have the polarity reversed between the 2v and 4V's, IIRC. Replacing the coil packs does not require resetting adaptive or any changes to the tune file. If you're considering replacing them, I'd advise sticking with Motorcraft brand parts.

 

[i8urSS]

Sweet. Just ordered a set of motorcrafts and frpp wires. Also picked up the autolites and gonna change it all out this weekend.

Then next week I'll have my gears swapped, throw out bearing replaced, firewall adjuster and steeda quadrant installed. Then I'll throw on my o/r h and that should tie me over for a couple of days hopefully.

Thanks for all the help.