Ignition mods for stock coil packs??

[meet07]

What can be done to make sure the factory coil packs are getting everthing they need..

I turned the boost up to 12-14psi and she breaks up around 5grand and up sometimes...I Know you can beef up the power wire and ground wires right??

[Sil240]

There's a thread where they are sealing the coilpacks.

But you could look up the B&M voltage booster.I think the old place Eric Hsu used to work for before Cosworth, now owns the rights to the voltage booster box thing.

You could run larger gauge power and ground wires to the relays on both sides.

[meet07]

Larger gauge wires seem cheaper...What good are voltage stabilizers??

[Sil240]

No, its not a "Voltage Stabilizer"Thats BS!!!

Its a VOLTAGE BOOSTER.It sends more power to your coils.

I think its called the Nu Volt.

But.... that I think costs like 150 -200Cheaper to switch to LS coils or GM waste spark.

[meet07]

No, its not a "Voltage Stabilizer"Thats BS!!!

Its a VOLTAGE BOOSTER.It sends more power to your coils.

I think its called the Nu Volt.

But.... that I think costs like 150 -200Cheaper to switch to LS coils or GM waste spark.

Yeah thats why i ask b/c im thinking the lsx coils are next on my list....can they be used with increasing the dwell...??

[Sil240]

I think you meant "Can they be used WITHOUT increasing the dwell"

Yes, they can.

Check out my thread, I have a nice little write up for RB20's, but its the same thing for S1 RB25's except for the 6 wire colors.

I also have a vid of the car running.

She used to stutter and hesitate like crazy!!

[virus77]

You can hardwire the coils power using a relay which is triggered with the original power wire. Functionally its the same and you get constant juice to your coils... helped a lot on my wasted spark setup, should help stock coils too.

[Cjmartz2k]

The coils are missing not because there isn't enough juice getting to them, it's because the juice is going somewhere else (like the head). Electricity is like water--it follows the path of least resistance. If the insulation somewhere on the coil pack is old/brittle/worn, it'll arc there to the head. Seal/wrap them up. Stock coil packs with stock wiring is good for over 1.8 bar and 600hp. I know that first hand.

If you need some spares to replace the weak coil, let me know. I've got a bunch.

[meet07]

virus77: I many try wiring in a new relay with the wires being bigger than factory. I just wired in a relay last week for my fal fans so it shouldnt be hard...

Cjmartz2k: The coils and motor came from jhot about 2 years ago with 62,000 miles on it. I drive it maybe 2 times a week tops... So I dont think its the coils giving up on me yet.. I jsut changed the maf to a z32 andmy A/F are low 12.0

Sil240: Man im slow this morning...

[Cjmartz2k]

I'd bet you money one of the coils is weak. Series I or II coils? If you want to make a little drive we could have it knocked out in no time and you could pick through my storage unit to see if you want anything. That, or John (Sickness14) and I have been talking about getting together before I leave. Might be as good an excuse as any to get down there, drink a few beers, and play with cars

[meet07]

Cjmartz2k:Your right...It will be an excuse to hang out. By the way its a Series 1. Over the last 5-6 months ive been collecting q45 coil packs so now I have a set of 6. My question is how do you diagnose a weak coil pack? Im gonna look over the r33 manual to see if its in there. But if thats the case I have replacements as well as a spare resistor.

I checked my plugs and they all looked good. Cyclinder 5 and 6 had a little red ash around the white insulator.. I remember reading some where that, thats a sign of coil pack failure...


Modified by meet07 at 3:43 PM 3/16/2010

[meet07]

I just checked the primary resistance on all 6 Coils. They ranged from 0.7-0.9

according to the r33 manual that is good.

[Cjmartz2k]

My method for checking might not be practical for you unless you have a complete spare set of known good coils sitting around. Just replace half the rail and see if the problem goes away. If not, replace the other side. Then you've got it down to 3, and start swapping. It's a lot easier when you've got 30-40 coil packs sitting around though LOL.

About meeting up, during the day not on the weekends is actually the best time for me, but I know that's probably not the case with you and John. Do you guys live close to each other?

[boosted98gst]

Sorry to thread jack cjmartz whats your phone number, id like to text you about gettingsome s1 coils from you. I ended up buying another set from some jackass who sent me s2 coils again which I have no use for.

[Booztd 3]

Stock coil packs with stock wiring is good for over 1.8 bar and 600hp. I know that first hand.

If you need some spares to replace the weak coil, let me know. I've got a bunch.

Hell, my stock RB26 coils on stock wiring has held 700rwhp and 30+PSI

I know on Full Race Geoffs rb26, his setup made a hair over 750rwhp with all stock stuff before it started to break up

Do you have any R32/33 rb26 coils? I need a few

[meet07]

My method for checking might not be practical for you unless you have a complete spare set of known good coils sitting around. Just replace half the rail and see if the problem goes away. If not, replace the other side. Then you've got it down to 3, and start swapping. It's a lot easier when you've got 30-40 coil packs sitting around though LOL.

About meeting up, during the day not on the weekends is actually the best time for me, but I know that's probably not the case with you and John. Do you guys live close to each other?

Yeah we are in the same city about 15-20 minutes from each other...But what else could be causeing the break up. It started after the z32 maf install....It drove good for like 2 days.

[Cjmartz2k]

meet07---So it pulled good with the new Z32 maf for a couple of days with no other changes then started missing again? Like, you made no other changes other than the MAF and it fixed your problem for a couple of days? If so, that's weird as hell and would indeed not point to the coils per se, but more some kind of sensor or another which is effecting your tune. I'm sure we can figure it out though. What are you using to tune? I'll give John a call this afternoon and see what he's up too. Maybe over his place would be a good place to meet since his car doesn't run LOL. Or you guys could come up here :-)

Booztd3--I've got series 1 and series 2 coils. They are all the same RB20/25/25. I had a mixture of all three on my car when I took it apart. I know I've got at least 9 Series I's sitting around, and 6 series II. Probably more, I just remember putting my hands on that many the other day.

Boostd98GTGs---shoot me an email and I'll git you up with my number. Above is how many coils I know I have for sure. I'll be able to get more in a couple of months though in case people need more than I have. I'm not going to be doing a lot of parts slinging like I did before, but if somebody really needs something, I'll track it down for them.

[Sil240]

CJmartz2k - I thought SII RB25's coils were different, since they did not have a ignitor?

I assumed that the SII coils had built in ignitors. But maybe the ignitor is built into the ECU????

[SullivanRacing06]

wrap the rubber down tube from teh coil to plug w a butt load of electrical tape to make sure its not arcing over to the head

[meet07]

Well im sure if you saw my post about my 1st z32 maf sensor install but I gave that back to the dude. Something was wrong with it. I think it was from a j30 or something. Anyways I wired the new z32 up and tuned it with my safc..to be honest it runs better with the z32 maf than the rb...

Now that I think of it....it might have broken up a little bit up top since the maf install. I really have bad memory. when the old N62 worked she pulled great..all the way up to 6800rpms at 14psi.

Where did you end up moving to...Im down with coming out your way by myself....

[Cjmartz2k]

Sil240---sorry, rereading that I wasn't clear. All the series 1's are the same, and all the series 2's are the same. Like you said, SII's have the ignitors built in, SI's have them on the back of the spark plug valley cover. The ecu's are interchangeable though.

Meet07--I'm in Kernersville about half way between Winston-Salem and Greensboro. It takes me about an hour going down 40 to get to NC State.

[nismopwr240]

just sent u an email cjmartz2k

[Cleveland180]

I just saw a thread about this on SkylinesAustralia, they recommended using some high temp silicon, down the mold crack on the coils to prevent arcing, or very high quality electrical tape wrapped tightly around them like Sullivan ^^^ said

[StricNyne]

i got the HKS DLI 2

[meet07]

Today I:-cleaned all my plugs-Swaped out 2 coil packs with extra ones I had-Checked all grounds-checked my timing

I did all this but when I checked my timing I was shocked. My timing was reading less than "O" My car usually idles at 1000-1100 rpms b/c anything lower she just dont sound right. Well I turned the cas sensor and set the timing at 15 degrees with the timing light. Now this was adjusted with my idle still at about 1100. After increasing the timing the car now idled at 1300 degrees...I unpluged the tb plug and lowered the idle to about 1050-1100 with the AAC screw,

As long as I have had this rb25 I have always had issues with adjusting the timing and adjusting the idle. I know the fsm calls for 650 but thats impossible. Im not sure if the upgraded manifold and tb has anything to do with it but I cant get it to idle that low.

I also noticed that the car was running way rich at idle since the timing was increased?? Dont know what thats about but overall the car ran great at WOT..I mean she is a super nasty machine now but im still confused on the timing. Can someone give me a basic run down again??

thanks

[meet07]

once again my car is acting stupid..here is what its doing:

-at idle its running rich. Like 12.0-11.0 rich??-cruising on the highway its running rich??-CAS is all the way CCW to obtain 15degrees Ign Timing

what is going on. When I set the timing to 0 degrees, she idles at 15. Im able to make adjustments and she responds to them like normal??

im getting tired of these complicated nissans...

[rb25det250sx]

check your mechanical timing, maybe you have a skipped tooth or two on the belt and got lucky enough not to bend any valves.

[meet07]

I checked that last time this happened and everything was lined up...

[Ramius83]

i got the HKS DLI 2

The aussies swear by this with the stock coil packs. It's what I will be going with.

[Carl H]

are you going off of the stock tach or an aftermarket one?