Spark blow out at high boost
Turbo Mini Forums

Has anyone experienced spark blow out under higher boost on a turbo a series? Think im getting the problem at 20ish psi since changing cylinder heads from the normal high boost spec to something a bit different with small inlets and big exhausts valves, after ignoring the problem and the car for a year or more i should really try to sort it out!

Any ideas appreicated
Ta Oli

gaps down to .5mm oli?

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

I will have to check what i set them to, i remember reducing the gap, and changing plugs etc, but didnt have much success!

Wintersurfer had this on the rollers at just 10psi. Closing the gaps sorted it.

In the 13's at last!.. Just

Il recheck the gap first when i get 5 minutes, if no good any suggestions for a more powerful coil, currently on the standard ford one,
cheers

http://www.ebay.co.uk/itm/Accel-140018-Ign...k-/390489949730

http://pumabuild.com/pumacat/product_info....roducts_id=1106

If something is worth doing, it's worth doing half of.

fit a high power coil

Own the day

cheers chaps, anyone tried the ones John has suggested?

I ran a Crane Hi6 setup with one of their CDI coils when I had mine running some 16-18 years ago

Then I wrecked the amp, so it was just the PS92 or PS91 coil. Cant remember which. One is CDI only, the other can be used with regular electronic or the CDI amp
That was with coil/dizzy though.


What ignition setup do you currently have ?

Edited by stevieturbo on 26th Nov, 2012.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

tryed just running a new coil? i tryed to work out a decent plug gap for mine, i increased the plug gap so far the spark was jumping sideways to the threaded part before it caused issues
i think there back down to 0.7mm now because when i lean it off on cruise i couldnt get it to go as lean as i want

Edited by Brett on 26th Nov, 2012.

Yes i moved to the darkside

Instagram @jdm_brett

Ive tried a few standard ford coils (running megajolt) admittedly all used and taken from old scrap fords which i suppose isnt ideal!

Have you tried another EDIS module ?

With MJ, the key parameters that affect spark strength (charge/dwell time) is done inside the EDIS module, not the MJ itself.

Yours might be on its way out or just at the extreme edge of its specification range.

Schrödinger's cat - so which one am I ???

Yes tried another edis4 unit to no avail, only bit i didnt try changing was crank sensor, as i couldnt see this causing the problem

Edited by retroracer1380 on 27th Nov, 2012.

crank sensor has no impact on coil power.

It may lead to misfires and unstable rpm readings etc, but it cannot impact on how much energy the coil creates for the spark.

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will