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So obviously there's a leak around the gearbox somewhere, you'll have to get under it and see where it's coming from. Have you done any work around that are recently, take the drive shaft out for any reason? What is the condition of the centre hanger bearing? Sounds like a universal as suggested.

The rattle that I had was coming from the exhaust heatshield just after the manifold. It's a 2 piece heatshield there if I remember correctly and it was just touching. It would only make the sound when taking of in low rpm.

that makes no sense Did you not realise yet that I'm trying to learn and am a total newb?!

The ignition module is stock s1 rb25 one and the coils are VN I believe. Dwell time is probably not right but I'm just trying this out to see how I go then later I'll make a proper setup. Bridge what inputs? It's impossible to adjust timing right now.

Here is how the setup is wired up, As far as I understand the red wire is sensing when cyl1 fired so the ECU can set electronic timing but since cyl6 trigger wire is also connected to this it upsets the ECU (Please correct me if I'm wrong!). Firing order is 1-6 3-4 2-5 so the there's a second pulse not even a second later. I tried connecting cyl1 trigger wire and the red wire together -> diode -> cyl6 trigger wire -> coil but that resulted in cyl1 not firing even though it had spark. Timing was checked via plug lead of course. Timing is jumping about 4 degrees backwards and forwards couple of time every second through the rev range. Gonna go see a sparky tomorrow and get some advice.

Yeah I understand what's going on, but I need to make it so cyl6 trigger doesn't affect the sensor wire as the that tells ECU when cyl1 is firing, this is how I understand it. I did it because it was under $100 and my coils were about done.

Hi. Have setup wasted spark with holden coils on a R32 S1 RB25 but now the issues is that the ECU is getting two pulses for no1 cyl spark as the cyl1/6 and cyl1 sensor wire are bundled. It's quite obvious when under a timing light, the timing is jumping all over the place. I've spend a few hours trying to remedy this with a diode but no luck what so ever, talk about a waste of time... Anyone have experience or knowledge about fixing this, I really need to sort this out. The car goes fine but can tell something is not 100% with the ignition. Cheers!

I did the exact same thing a few months ago with a drill and a jigsaw... came out ok, but these look so nice About 5 weeks ago a coil pack still failed when the car got really hot.

If you got cash for a GTX it's a no brainer.

Any weird symptoms like rough idle, random backfires, revs down rough? Checked timing? CAS? Knock sensor? How does it hesitate and struggle as it revs? Starts cutting out and being jerky or just loss of power as it revs as if its out of guts?

No idea, the person I bought the clutch / flywheel from sorted me out. Shouldn't be much, maybe around $150 range depending on place etc.

If everything is straight when the box gets stuck like that then it's most likely stuck on the splines. Rotate the engine and should slide in.

After the 6 puk melted to the flywheel I got the flywheel and pressure plate balanced and all the vibrations are gone now. Lessons learned, experience gained... Also switched from ceramic to kevlar and it's so much nicer to drive around streets, 6 puk ceramic can stay for the track.

The clutch is from a reputable store in NZ, not actually sure on the brand or where it came from. The gear is definitely of high quality, could be a bad batch. Will go see the guys there today and have a chat about it. No I didn't mark the driveshaft flanges but remember this vibration is happening in neutral, driveshaft shouldn't have anything to do with this vibration as far as I know. I'm leaning more towards pressure plate cast being out of balance or something similar.

So my standard clutch finally gave up so purchased a lightened flywheel and a 6 puck clutch kit. Installed it all last weekend, the only thing not replaced is the bush inside the crank as I was running out of time. Everything has been bolted up correctly, surfaces checked, there was a little bit of machining material left on flywheel dowels but cleaned it all up so the pressure plate definitely sat flush. Gearbox was supported the whole time so clutch shouldn't have bent, there's no judder/shudder and car drives fine. Been driving the car easily to get everything to bed in so haven't pushed it yet but have noticed that more vibrations are coming through the car, especially at around 4k rpm mark where it starts to gets a bit crazy. I have solid mounts for the gearbox and in the subframe, a bit more noise came through but no biggie as I've been using them for over a year. At first I though it could be the driveshaft being unbalanced but it also happens in neutral at around 4k rpm there a big vibration starts coming through the car, which keeps increasing as the revs go up. The vibration is of high frequency, as if something is out of balance slightly. I can't feel this vibrations on the clutch nor through the shifter. Anyone experienced something similar after a clutch job? Any tips of pin pointing the location of this vibration?