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coils KW/boost limit on r34GTT?!

ssslpr

By ssslpr,
in General Maintenance

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ssslpr Enthusiast

ssslpr

Posted
Posted

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.

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https://www.sau.com.au/forums/topic/61711-coils-kwboost-limit-on-r34gtt/
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Abo Bob Grand Master

Abo Bob

Posted
Posted

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.

GroundRun Collaborator

GroundRun

Posted
Posted

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 Enthusiast

ssslpr

Posted
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Posted

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 Grand Master

benm

Posted
Posted

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).

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