ignition dwell time

Seight-V8 · Post by **Seight-V8** » Sat Mar 21, 2015 9:08 am

hello all,

Anyone know what would be a good ignition dwell time for the rover V8 4.6 engine using the GEMS coil packs.

My ECU settings are 3.52ms, just wondering if this is too low?

cheers

scott

Spongo · Post by **Spongo** » Sun Mar 22, 2015 6:44 am

That sounds spot on to me, when I was having issues with mine we tried some different values but that is what GEMS coil packs seem happy with

Seight-V8 · Post by **Seight-V8** » Sun Mar 22, 2015 12:32 pm

cheers, it's good to know that this setting is ok.

Changed my spark plug gaps to 1mm from 0.9mm, as per the rave manual.

Thanks

Scott

DaveEFI · Post by **DaveEFI** » Sun Mar 22, 2015 1:46 pm

Figure I found for plug gaps with EDIS was 35 thou. So approx 0.9mm.

Seight-V8 · Post by **Seight-V8** » Sun Mar 22, 2015 2:30 pm

sure ive had 0.90mm in mine since the start, just thought the spark might have been a little weak at idle, so I set them to 1.0mm.

Not much difference I can tell, need to tune it better first I think.

cheers

scott

Spongo · Post by **Spongo** » Mon Mar 23, 2015 8:21 am

Yup got mine at 1mm as well, although mine is a SBC not a RV8