Jump to content
SAU Community

Missfire Boost@4500-5500 RPM - The Answer! (for me at least!)


Recommended Posts

hey ben, i have noticed that you have mentioned a 10rwkw gain on your car from just the spitfires, its a bit hard for me to believe, so could you please explain the circumstances

ie. if there was a dyno run directly before and after u fitted them on the same dyno or whatever..??

(i just expect my car to run properly again when i put mine in!)

Hey mate, relax with the CAPS :)

i taped plastic pieces between the coils and the frame as a last resort, this lessened the misfiring, but as the car got hotter it was pretty much the same as before, and oh yeah, the plastic started melting  :rofl:  

that was my last resort, so yesterday i just ordered a set of spitfires. ($$)

Sorry it didn't work out for you, it does get hot in there.... so far my plastic hasn't melted at all, but the amalgamated tape has deteriorated a bit, but still covering the coils pretty much. Thecar has done 500kms since in various temps, and so far good, no misfire at all.

I think that the method described in this thread is an excellent fix for the relative cost (<$1), but at the end of the day, splitfires are the go.

Do you mind me asking what you paid for your coils?

Or if anybody reads this, where is the cheapest? for new blue splitfires?

The best i've found is $900.

all i got to say is CHAMPION i have spent almost a year trying to track down this interrmittent miss bought a set of coils from SSS and spent hours changing one at a time trying to find the one that was stuffed Got home last night spent half hour taping all 6 coils and then went for a test run and beautiful no more miss also this morning sweet as to work so Thanks for helping with my ongoing headache

Sorry it didn't work out for you, it does get hot in there.... so far my plastic hasn't melted at all, but the amalgamated tape has deteriorated a bit, but still covering the coils pretty much. Thecar has done 500kms since in various temps, and so far good, no misfire at all.

I think that the method described in this thread is an excellent fix for the relative cost (<$1), but at the end of the day, splitfires are the go.

Do you mind me asking what you paid for your coils?

Or if anybody reads this, where is the cheapest? for new blue splitfires?

The best i've found is $900.

Hey,

i paid 635 delivered from sau trader newkon.biz..

but i believe he has updated the thread with info that he has no more stock, so i guess you could ask him when he is getting more, he gets them from japan direct not from the aus distributor, which is why they are cheap.

the cheapest i have seen locally is around 900 as well.

i have had the spitfires in for a week now, they work fine, back to full power and maybe a little more :P

Its good to see your fix is still holding up! i guess mine had gone too far already, and it was not one, but three of them that were stuffed!

having a very similar problem, tried tape, lessened the problem but not fixed..... Ordered coils from nengun, they were $560 (delivered to queensland) on special. (they arent a great deal more off special) very good service from these guys........

just a thought, something that might be a more perminate fix could be glued heat shrink

tho im not sure were you would get it from and how long it would last.

i am going to try and get some from work and ill let you know how it goes.

by the way thanks for the tip with the tape... so far so good. *touches wood*

just a thought, something that might be a more perminate fix could be glued heat shrink

tho im not sure were you would get it from and how long it would last.

i am going to try and get some from work and ill let you know how it goes.

by the way thanks for the tip with the tape... so far so good. *touches wood*

Here is a more permanant fix:

http://www.skylinesaustralia.com/forums/sh...ead.php?t=51046

I did this over 9 months ago and haven't had to touch them again....

If you do it properly it is a permanent fix....

Alternatively you can do like i have and that is fit 6 Bosch coils (MEC717)and run leads

Changing plugs is a piece of cake now. and you can use the standard ignitor

This is working on a Series 1 RB25 so external ignitor not sure about series 2 with the built in ignitor

What did that cost if you don't mind me asking....

I was exploring this alternative ages ago, but found it expensive at the time, so I was going to go for the splitfire replacements.... before I gued them...

Anyhow, if it is a cheaper alternative to splitfires, then it may be the go for many others...

Complete price for 6 coils and leads was $300.00 as to labour cost my mate is a Auto Electrician so it did not cost me anything for fitting and wiring

But as a Example a Workshop wanted $600. to supply and fit a set of VN commodore coils.

Apparently a guy over in NZ has found a Buick V6 coil pack that works fine, and for $150 I am about to find out if it is or not, just about to order one.

http://forums.skylinesdownunder.co.nz/show...&threadid=39596

Hi guys

I have had this prob for some time as well . just went into jaycars and bought "starbrite liquid electrical tape " it says its got a service range of -30 degrees to +255

let u know what happens

Hi Guys,

I just taped up my coils with electrical PVC tape and that seems to have cleared most of the misfiring ie, runs pretty decently.

However, I notice that when I'm crusing in 4th gear and then decide to give it some, the engines sometimes cuts off and then all of sudden goes good. If I were to slow down and then accelerate immediately after this happens, it doesnt cut off anymore.. Could be that I have missed a coil?

Any help would be great... and lastly please let us know how that liquid electrical thing goes..

thanks

steve

seems to work ok you have to rally coat after coat to build it up in the "danger" areas along the sides. I dont think its the answer. this week im going to fit a set of vs-vr coils .anyone using the vn ones (they are square as apposed to the vs-vr ones that are round) should realise most holden guys swap to the later ones cos the early ones are so much trouble

we will have to see how it goes. the coils are around $150 from the wrekers.

and if you are aseries two you need an igniter (the little heatsinked aluminium box that sits at the back of the rocker cover) as im series one its easier just pull the wiring that usually goes to the coils join them in three lots of twon ( the right ones that is) and a few connecters

if it works well its got to be the best answeras the coils are out in the airflow then. and if you are worried they wont perform as well you can always spend 3x $108 for motec ones for holden 3.8's at autobarn

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Latest Posts

    • sold listed as a Tomei LSD 1.5 Way For 1998+ Nissan Skyline ER34 25GT RB25DE w/Open R200 https://www.ebay.com/itm/174006114594?campid=5338967980&mkevt=1&mkcid=1&toolid=10050&customid=&mkrid=711-53200-19255-0&loc_physical_ms=108689&loc_interest_ms=&campid=5338967980&mkevt=1&mkcid=1&toolid=10050&customid=71883f2ccc571356e0a757bc7adfdde2&mkrid=710-53481-19255-0&loc_physical_ms=108689&loc_interest_ms= it went in like butter all gears, alignment, back lash etc, rotation and clearances correct, and if rolling all rotates smooth and free when coasting down road , clutch in or out over 10 mph smooth... its the binding, clunking and jerking from a stop that is most concerning, also seems like its going to tear the tires off in 10 miles of normal road driving. 
    • What 1.5 way? There's no such thing really as a 1.5 way, just different ways of explaining 2 ways with different ramp rates. HOWEVER. In any driving in a straight line your 1.5 or 2 or 1.7 way should have no clunking at all. With the clutch fully depressed the diff should be silent (unless it's welded but I'm assuming it's not). Something aint right here.
    • Clutch is a spec brand, new clutch system,( PP, flywheel, friction disc, etc. pull type) installed 100 miles ago, with no problems.
    • looking for some help and maybe some insight on others experience with a new LSD. R34 GT ran and drove beautifully, but always alot of grip loss due to the open R200 rear end, so I just installed a new 1.5 LSD way into the stock open R200 for a ER34. Simple. Everything seemed right. I test drove for the first time this weekend. as I started to back out the garage the first time slowly with tires straight it sounded and felt like I had a loose or half disconnected drive shaft...that was clucking around loose and shaking entire vehicle, and making it feel like the trans clutch was spontaneously slipping then grabbing very roughly while just letting out pedal slowly. I backed it out went to pull forward with the same noise, shake and slip grab feeling with hesitation, I turned the tires to back out more and then pulled ahead some same thing but worst because of added wheel resistance (which that I expected) puzzled … pulling it back in checking everything over and finding nothing wrong, I tried it the next day. same thing, couldn’t believe how it shook everything again making a terrible noise and making it feel like the trans clutch was slipping and grabbing, but I got it out of garage into the driveway, got it straight, drove forward and then reveres a few times in a straight line everything shaking , causing what felt like clutch slip and grab every time, sounded like right behind front driver tire and I could feel it in the floor board with my feet,... worst right when beginning to let clutch pedal out to engage slightly, shuttering and sounding terrible along the way…I managed to slowly get down the road, babying it the whole way, once I was rolling (out of 1st) seemed to be better and between shifts, then clutch felt closer to normal…not slip/ grab etc., but back down to any stop, straight road or turning, same thing. Made no difference if all tires were straight or if I was turning. All other gauge read out correct. with in 2 miles as planned I reached the empty parking lot and performed the break in procedure that came with lsd, essentially to drive in a figure 8 a bunch.  Did this, binding chattering, and shaking the car the whole way. I drove it back home seemed somewhat normal once I was in straight line and past 10 mph or so, and I know it will “bind” on corners and cause some tires squeal when turning especially from a stop, but when I begin to move it still causes what feels like the trans clutch to slip and jerk badly as well as shaking the entire car, and sounds terrible, that I didn’t expect. I used the fluid they supplied with LSD kit and did the breaking, planning to change fluid as they suggest after breaking, but wondering will it get smoother or less aggressive with use? maybe a 1.5 is just too aggressive for normal road driving?   I have a LSD that I put in my 71 cuda when I restored it, with amazing smooth , quite yet effective results. Different style LSD but that ones a joy to drive. maybe expecting too much from this R200?
    • Join SAU NSW for a flame-grilled feed & flame-spitting cruise! Sunday 17th August 2025 3:30PM Meeting Archies Flame Grille Sylvania Waters 4:45PM Cruise Departure 5:15PM Arrival at Cape Solander Kurnell Meet Location: Archies Flame Grille Final Destination: Cape Solander Kurnell *Disclaimer* There will be a lead and follow car so no one should get lost. If you would like to attend or bring others along please put your name down and a +1 as numbers will be needed prior! This is NOT a race and we will all be adhering to all road rules. If this is what you want please come to one of our many track days. This is an official SAU:NSW event and will be run under a CAMS permit. One of the things that really sets our club apart is our commitment to being true enthusiasts. When on normal roads we strive to maintain good relations with the authorities as well as the public in general. When attending one of Skylines Australia NSW events please try to: • Be aware of surrounding environment and act accordingly. • Drive courteously on the state’s roads as a true enthusiast should. • Understand how important it is to maintain the good name of SAU NSW and thus, treat others accordingly. • Any misbehavior will not be tolerated and you will be asked to leave.
×
×
  • Create New...