Can S2 R33 Coils Handle Over 13psi?

[shotter]

Hello

As the topic title says, Can the std coils handle over 13psi? My car runs fine at 13.2psi. Anything over 13.2 when i rev out 3rd it gets a missfire. My plugs are gapped to .8mm

[TiTAN]

need more modification details, stock ecu?

[red_screamer]

how old are your coil packs?

[paulr33]

boost is not related to stock coils keeping up or not

they simply die of old age

so you can run 27psi if you like

one day they will die and misfire regardless of engine boost

once the engine is on load, it will misfire

so run whatever you like

1.3kgcm2 if you want

[shotter]

the turbo is a high flow, the ecu is std but has a haltch intercepter connected which has been tuned, The engine has forged pistons. Im guessing the coils are as old as the car. Someone told me it could be the higher boost is blowing out the spark?

[paulr33]

breaking down spark is different to coils dying

coils die due to age, when they die, like i said, they misfire as soon as the engine is on load

ie one day its fine, next misfire city, so its all of a sudden.

spark breaking down is usually too much boost or wrong gap or intake temp too high

or combination of all three usually. if running less boost cures the misfire its probably spark breaking down

my coils lasted 160,000 then gave up

[Lithium]

  paulr33 said:

coils die due to age, when they die, like i said, they misfire as soon as the engine is on load

ie one day its fine, next misfire city, so its all of a sudden.

In my experience the typical coil misfire is the insulation giving out, everyone I know who has put work into decently re-insulating them have fixed it fine. I run up to 18psi on my original S2 R33 coils with extra insulation on them is going fine

[paulr33]

yeah you can fix the coils when they die, but often is easier to buy new ones

[shotter]

Yea it happened really bad one night when the air was still pretty hot. I found a few FAQ's on how to insulate the coils, So i might give that a go and replace the spark plugs. What better out of BCPR6E or BCPR7E? Or do people recommend any other ones?

[cactus]

who can repair coils?

I have splitfires in mine atm, sometimes when I leave car to warm up in morning, it will run on 5 cylinders, ill go out, disconnect connection to coil #3, plug it back in and away it goes back on 6 cylinders.

But when I drive and give it a little stick, it starts miss-firing so i assume its that faulty coil?

[autoworx]

you can buy splitfires individually to replace a dead one

[paulr33]

  cactus said:

who can repair coils?

I have splitfires in mine atm, sometimes when I leave car to warm up in morning, it will run on 5 cylinders, ill go out, disconnect connection to coil #3, plug it back in and away it goes back on 6 cylinders.

But when I drive and give it a little stick, it starts miss-firing so i assume its that faulty coil?

the 10+ year old plug or wiring is likely at fault vs a new ~ish splitfire coilpack set

[R31Nismoid]

You can also get the coil pack loom from Nissan for around $140AUD from memory... its pretty cheap if the plugs are a bit stuffed.

I purchased new for mine with the splitfires, good insurance.

And for the record i made 370rwkw on stock RB25 coils, they were in very good condition

[shotter]

how much boost were you running to make that power? And what spark plugs?

[R31Nismoid]

just run of the mill $2 coppers

24psi on sunoco104

[shaunzo101]

  R31Nismoid said:

You can also get the coil pack loom from Nissan for around $140AUD from memory... its pretty cheap if the plugs are a bit stuffed.

I purchased new for mine with the splitfires, good insurance.

And for the record i made 370rwkw on stock RB25 coils, they were in very good condition

yeah...quite a high price..it might be better to find a private seller they might charge 30 bucks or lower.

[bubba]

A private seller for a coil harness?

I paid $120 for mine from RHDJapan, with shipping it worked out to the same as getting it from Nissan but got it in one week instead of three. I looked up the harness on RHDJapan recently and they're up around AU$270 delivered now

I was troubleshooting a misfire when hot issue for AGES, turned out it was the insides of the coil harness plugs falling apart.

[cactus]

Where can you purchase inidividual splitfire coils from?

[R31Nismoid]

  shaunzo101 said:

yeah...quite a high price..it might be better to find a private seller they might charge 30 bucks or lower.

I meant quite low price considering…

Why get one 2nd hand for $30 only to have the same damn problem 6 months later?

Makes zero logical sense. You cant get them much cheaper as bubba has pointed out

Pay the Nissan price, its actually reasonable in price for something OEM and after 10-15 years does need replacing

[benl1981]

Hey Bubba,

Could you clearly see the plugs deteriorating inside? I have a misfire when hot. Trying to sort out whether its coils, harness or ignitor module (series 1 R33)

Thanks