Turbo 360: More potential shell ruining lol

[volvodspec]

still confident about the 3-weeks build bit of the project mate?

nice work, i'm interested in what you'll come up with for the intercooler placing with the radiator there and those 2 massive electric coolingfans.

[Hell Driver]

All this is encouraging me to do the Mk 1! Only thing is, if it takes you 3 weeks at your rapid speed it'll take me 3 years
The car ain't nowhere near road worthy or fit for that power so I've got a hell of a lot to do (and learn to do) first........make that 5 years
Can't wait to see the next stage

[L14MNP]

(I will read and answer the above soon guys. Cheers!)

Problems once more!

Last night was the first time we tried to fire it up. The coil was dead. It was late by then so it was left as is.

This morning I removed the looms (except engine loom) and checked through them for breaks/twist n tape joints I may have missed that could be causing poor conenctivity. Mick turned up at this point and we checked the looms for continuity blah blah and all was well. I then reinstalled them in the car and the bastard had 12v at the coil! :/

There are no noticeable issues with the loom, but the coil is sparkign very erratically IMO. See vid. http://s895.photobucket.com/albums/ac15 ... V00049.mp4
Am I right in thinking that it should just spark constantly? As it seems to just do what it wants. :/

Now, when it is sparking the car does try and fire on occasion, but the most I get is a couple of backfires and popping from the inlet side. Usuually it does SFA!

I think the injectors may also be in the wrong order, as they weren't lbled up when removed! Am I right in thinking that if they are trying to fire in the wrong order then it won't want to start at all?
I am unsure how to find out which order the injector plugs should be in on the loom too. :/ It has two longer wires and two shorter ones. Short ones for numbers 2 and 3 perchance?

There is also the slim, VERY slim possibility that the flywheel is on in the wrong orientation, which would explain a lot of the above I guess.

Does anyone know if it's fine to feed 12v directly to the coil, and what I kind of firing order I should expect from it as a result?


This normally wouldn't be such a major head fcuk, but I'm aware the clock is ticking!

[pyro]

There are no noticeable issues with the loom, but the coil is sparkign very erratically IMO. See vid. http://s895.photobucket.com/albums/ac15 ... V00049.mp4
Am I right in thinking that it should just spark constantly? As it seems to just do what it wants. :/

that does look like its firing when ever it wants, id suspect the coil, (or dizzy?) I do have a coil here, but i duno what shape its in at all, as ive never used it!

Ben

[L14MNP]

I have my mate pulling his 940 apart right now to check how his coil fires lol.

Cheers Ben, I may be needing that too! I wonder if the B200 coil packs are a suitable replacement?

[pyro]

Im not sure to be honest, if you can by pass the renix bit, the mapped part then i dont see why not.

as far as i know coils are a pretty universal thing,

I would have thought it would fire up be it a bit rough, if the injectors were in the wrong order. from memory the wiring loom came up the middle of the inlet manifold, then branched out. so the shorter wires would go to 1 and 4. having said that ive looked at the loom outside and i think its number for each injector....

Ben

[L14MNP]

I agree dude, you would expect it to bark up roughly at the very least.

Just had my mate check his coil and it fires as you would expect 1,2,3,4 etc. So mine's definitley weak, why I do not know, but it is.

He also says that the two short injector wires go to number 2 and 3.

Saying that though, he has 5 terminals on the coil with 4 connected wires. I only have two. Strange. The 940 only had the two though and it was obviously fine with it!


I've downloaded a load of wiring info crap so I can look through it after tea and hopefully restore the 12v feed to the coil.

[pyro]

Just had my mate check his coil and it fires as you would expect 1,2,3,4 etc. So mine's definitley weak, why I do not know, but it is.

He also says that the two short injector wires go to number 2 and 3.




I've downloaded a load of wiring info crap so I can look through it after tea and hopefully restore the 12v feed to the coil.

well id have thought the firing order would be 1,3,4,2 as normal on a 4 cyl

i found a load of lh2.4 wiring shizzle when i was going do the conversion if you want it sending over...

Ben

[volvodspec]

coil can be swapped with undoing the 2 torx bolts but i doubt that is the problem

i think you might want to search in a bad ground or faulty signal from the TDC sensor

[L14MNP]

I am agreeing with a bad connection somewhere, as it explains the intermittent power to the coil and also the poor spark from a previously fine coil pack.

I am going to check this out shortly. Ben, I meant the coil pack fires constantly, not the firing order of the engine. I fail at explanations! lol

If you could mail me what you have that would be awesome mate. p11ftm@hotmail.com

The hard parts are done. Damn thing! lol

[L14MNP]

A full nights worth of fruitless multimetering has lead us to the stage where there is 12v present at the coil wiring conenctions (blue +ve & red/white -ve) but only on permanent live (ignition switched off) and position 1 on the ignition switch. There is no voltage present at position 2 and 3 (cranking).

We have been using the meter and also a bulb to test this. It's strange as hell the way the voltage drops to zero as soon as anything is connected. The bulb worked a couple of times, and then the wiring wouldn't even hold enough voltage to power that.

The looms are in good order and showing continuity as they should.

Three questions I guess... 1) Where does the red/white -ve coil wire terminate inside of the car? This has been cut from the main/dash loom as it was clearly running without it in the 940, so shouldn't be needed, but who knows now. :/

2) Is it normal for the voltage to drop if there is no attempt made to fire the engine? We are guessing it's the spar enhancer/amplifier discharging the coil. Is this right?

3) If the flywheel was fitted wrongly, would that explain the crazy timing of the firing from the coil? Or (hoping) would it always fire the same at the coil, and only when the rotor arm rotates would the incorrect timing come into effect? Or not :/

Also, 12v direct to the coil from the battery did not yield any firing, which I assumed it would. We tried two coils and same deal with both. Would a direct, permanent power supply work though? Because then the spark enhancer/amplifier is not part of the equation.



This is not a complicated system, I cannot believe what has happened at this stage of the build. :[


Does anyone have any ideas why it would be losing voltage as soon as anythign is connected to the offending terminals? I had more questions too but I've forgotten them ffs.
I'm off to plough through some wiring crap I've downloaded.

[Ride_on]

how do you know its not the flywheel, how did you change it?

I took mine off once before, and found it very difficult to source the correct information for the dual mass and/or LH2.4 ignition types. I was given the diagram that was in my 360 manual, but it does not relate the dual mass flywheel and is for old 940s + 360s. In the end I used some rust marks from the holes in the middle of the retaining bolt area.

Possibly one just uses the TDC ignition indicator, I think it should be 90 degrees from the timing gap, not sure which way though. My solid flywheel LH2.4 for the 360 has been marked for TDC by the seller, but the timing gap is the opposite side I was expecting according the the 360 renix diagram. I would need compare my 940 donor flywheel, and thats not happening soon.

[volvodspec]

flywheel could indeed be mounted wrong,
but that just means the timing is off, not that you barely get a spark at all...

i'd try a different TDC sensor, are you sure the way you positioned it now it matches the correct distance to the holes in the flywheel? if it's too close or too far away it also could be why it's doing these weird things.

[filthyjohn]

^^^ Good call, we never really investigated it, though we talked about it. The big mystery to me is the red+white wire from coil negative, to the ignition amplifier, to a big multiplug, to thin air. I know the engine ran fine without it in the 940, but surely it should go somewhere?

[volvodspec]

a bit drastic but worth a try;

get a car next to it wich has also the same renix ignition, hook the TDC from that car to the renix in this 360 and crank both cars at the same time (none wil fire); if you do get a proper spark then; you know what the problem is.