coils KW/boost limit on r34GTT?!

[ssslpr]

i was just wonderign how much power the standard R34 GTT coils can handle as ive been told that i need to upgrade them cause thats what is causing the missfire when i rev the car out. im currently running 0.8bar max boost but the missfire still occurs at standard 0.4bar. on hi boost i have 195KW ATW. only mods are exhaust,filter and boost. has anyone else had this sort of problem with similar specs??? could the power have damaged the coils and should i upgrade or just replace whats damaged?? also if anyone knows where i can purchase splitfire coils at competitive prices if i need to upgrade as nissan one are 198 each i was told.

thanks for any input. greatly appreciated.

[Abo Bob]

I think your coils are damaged rather than not up to spec. How many k's on your car? I had to replace mine at 66000. (real k's)

are your plugs gapped down to 0.8?

[rd-runr]

nengun.com have good prices for splitfires!

[ssslpr]

what u mean by gapped down?? its only got 41000 kms on it. i though thewy were just damaged also. but upgrade could be a good option so they last longer?!?!

[Abo Bob]

Your spark plugs are gapped to 1.1 mm standard and if you up the boost you need to gap them to 0.8mm.

That's you first port of call but your car could very easily have another 20-20-50k on it but has been wound back meaning that your coils may well need replacing.

There are a couple of threads on here about taping them up and arralditing them etc but it doesn't seem to work for everybody.

[IanH]

My car ran 17.5psi on 0.8mm gapped plugs with standard coils with no problem.

[666DAN]

Then again my car was N/A and the coils still died at 100K I think the coils are quite capable, just not very robust.

[GroundRun]

The coil pack tend to over heat cause of th enclosed area that they are in, I removed all the covers including the thin black piece that slides out after 2 of mine overheated. Plus it makes it easier to replace the sparkies.

But yeah your misfiring when the engine gets reved higher is the exact same problem I had a year ago. Hope everything works out for you.

Nick

[ssslpr]

if i tell my mechanic/performance shop to "gapp down my coils to 0.8" will they know what im on about?? also thanks for the healp guys. i'll try and sort it out asap. and let u know how its goes. thanks again for the input

[benm]

Its your spark plugs you need to gap to 0.8mm (or buy pre-gapped coppers and just put them in yourself, will cost about $25 and 25mins of your time).

Gapping the plugs from 1.1mm down to 0.8mm is just a quickfix for coils that are on the way out. After that you tape them with electrical tape, then when that fails you can araldite them then all that is left is buying a $600+ set of Splitfires (which is what im waiting on delivery of).

[ssslpr]

finally got the coils 3 months later. woo hoo. putting them in tomorrow.

[Abo Bob]

Well you might as well make sure your plugs are gapped to 0.8 while you have the thing apart. Hope it works out fine for you.