Spitfire Coilpacks Rb25

[CAT_SPEW]

I know alot of people have a misfiring problem in their RBXX's but I'm trying to find out if just throwing some brand new spitfire coilpacks in there should solve the problem?

I have checked the packs countless times, wrapped them in tape, cheacking for any signs of burns/cracks and have found nuthing.

The thing that I don't get is that it will happen one time, then another time it will be fine. Usually after being hot for a while is when it occurs in high revs..

Any help would be really appreciated

[carl h]

checked plugs lately or changed them out for fresh one?

check gap, most ppl here run .8mm opposed to the 1.2 specified by nissan.

else give the splitfires a go, worst case they are just bling.

[Ant97GTR]

Assuming you've checked everything else like the plugs, the coil pack harness etc then go the splitfires.....I had the exact problem you describe (an on again/off again miss) changed to splitfires and solved the problem.

I wouldn't say there bling either....not that there was a noticable power gain (I didn't run it back to back on a dyno) but they are/were heaps cheaper than replacement stockies from Nissan.

[CAT_SPEW]

Thanks for the help, I changed the plugs as soon as I bought the car then gapped them down to .8 so thats all good. I just went for a strap then and it is running fine so hopefully it will stay that way. Otherwise, spitfires

[copycutter]

yeah i've had a similar problem in mine for a while. I went and taped up the coilpacks and they looked clean to me aswell cat spew. Then i also replaced the plugs, but i later found out my plugs are too hot running plugs and they are 1.1 gap which is obviously not good.

i'm going to change to the '7' heat range and 0.9 or 0.8mm gap and see if she comes good.

Fingers crossed..

[Turbz_13]

when u guys say miss firing, do u mean 1 cyl dropping out? as i am having similar probs when my car heats up

Edited March 16, 2006 by Turbz_13

[SirRacer]

what are the costs for the coil packs?

[Craved]

http://hioctaneracing.com.au/eshop/index.p...facturers_id=10

$900 + GST

nengun are about $590 delivered

[R31Nismoid]

Splitfires are identical to stock.

Locally you can get them around $600 from some of our traders.

They are cheaper than Nissan, and obviously around 10 years newer.

The performance gain will only occur if your current ones are fruited.

If you dont have a problem then they are not worthwhile.

Cheap option could be get a mates one that works, swap one by one till the car mis-fires no more in big RPM... thats the fruited one

[Bl4cK32]

www.perfectrun.com.au have them for under $550 delivered.

[[R31][Silhouette]]

www.perfectrun.com.au have them for under $550 delivered.

I ordered mine through Perfectrun.com - they took 4 working days to arrive in Melb from Japan!

Just on 551 smackers delivered. You might get lucky though when ordering and they might have some in stock in Syd office, in that case you might get them couriered next day?

Cheers.

P.S They solved my misfire problem - I tried the taping up the coils originally.. and found it lasted for about 2 - 3 days! You wont regret the Splitfires!

[sKYWPN]

[GTshortie]

After under going some misfiring problems with my car lately. THINKING it was the coilpacks. it actually wasn't

this is the story,

Fridaynight PERFECT, running 1.3bar of boost without a beat

Saturday on the way down to Goulburn(wakefield) gave it some boost on the freeway misfiring all the way to redline. head down to supercheap at goulburn for silicon spray (before going to the track) still problems.

ON the way to wakefield from goulburn supercheap. the car was good again! hahah werid. anyways.

Car was running fine til around 3pm, damn it was hot that day 32-35degrees track/road temp! then at 3pm car started misfiring on 1.0bar of boost(didn't bother with high boost).

days later, car still misfiring, bought some copper heat range 7 ngk plugs, regap them to 0.8mm

(my old plugs have only down 25000kms they are iridiums-jap around 0.9-1.0mm can't remember)

TESTed the car. 1.0bar of boost it was fine (this is at night)

anything higher then 1.0bar of boost it misfired BUT not as bad just 1 or 2 jerks.

not happy thought it was the coil packs ($550 for spitfires from perfectrun)

then went to SAU dyno day.

high boost 1.3bar Misfiring ben backed off <knocking>

low boost 1.0bar misfiring ben backed off <knocking>

boost controller OFF! (10pounds) 180rwkw. not happy.

THEN i thought OMG, what a bad day. insurance for both cars due and need to save up for coilpacks.

BEFORE, taking this move and investing the big $$$ call my tuner he recommended and says HE always runs 0.65mm in most R33 gts25t with high boost. (1.30bar - 18-19pounds)

SO finally resort... regapped them from 0.8mm --> to 0.65mm

then out for testing............

1.0bar........ Smooth.........

1.1bar ...... still good

1.2bar. ..... not missing a beat

1.3bar.. BINGO!.. problem solved!. NO MORE misfiring!... SO HAPPY that it was my $24 copper plugs that solved the problem not coil packs for $550.

but then again thats my car.. different for everyone. doens't hurt to try though.

my 2cents

[Tommyk]

Ray - The problem you had there is a COIL problem. By shortening the plug gap, you are simply reducing the amount of energy required for the spark to jump the gap. If you buy coils, you can probably regap the plugs to 0.8 or 1mm

[Craved]

Ray - The problem you had there is a COIL problem. By shortening the plug gap, you are simply reducing the amount of energy required for the spark to jump the gap. If you buy coils, you can probably regap the plugs to 0.8 or 1mm

exactly what my tuner said..

im running 0.6 since the boost was blowing the spark out at 18 psi...

going the split fires then back to 0.8 for me..

Edited March 16, 2006 by Craved

[Tommyk]

you can buy mine. They are for sale

[Craved]

i got mine sitting at home if that offer is for me lol

considering running a bigger system, if only MSD's weren't so expensive.

[Tommyk]

something like cruiseliner/stagezilla has in his rb26 stagea would be good. But way too much f**king around

Effort. Plus standard coils should cope reasonably well, if they are newish ?

[Craved]

im just hoping that the splitfires will cope with 350ish rwkw on the rb30... dont wanna use these then have to upgrade when i can sell these as new

just trying to plan ahead..

but even with the miss i was getting, it wasn't audible really, just could notice the drop in power on the dyno..

[R31Nismoid]

couldnt see why they wouldnt, mine held 330rwkw/369rwkw on fuel which is harder to get going than pulp

[TTT]

I taped mine up on monday.

and left the cover off too.

revs clean to redline

89 model RB20

but then again my car isn't exactly what you'd call modded.

in the maintenance section, there is a thread about this..

good read on other alternatives to taping.