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D'oh!
Mar 31, 2014 20:46:38 GMT
Post by Simon H on Mar 31, 2014 20:46:38 GMT
Today I fitted a fancy electronic distributor along with an Aldon Amythyst switchable / programmable mapping gizmo to help make best use of the LPG conversion fitted by a previous owner. The install went well but getting the thing running was another story... Having loaded and reloaded the ignition maps via the laptop and almost giving it up as a bad job I eventually noticed that the entry for the rev limiter was set to 55 instead of 5500... D'oh!
Happy days
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D'oh!
Apr 1, 2014 2:13:20 GMT
Post by Warwick on Apr 1, 2014 2:13:20 GMT
Simon,
The other option would be to change the diff ratio.
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on Apr 1, 2014 8:59:29 GMT
Just ordered up a 123ignition this morning gotta say, the idea of plugging the rover into my laptop pretty amusing. Watch this space.
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D'oh!
Apr 1, 2014 10:50:08 GMT
Post by enigmas on Apr 1, 2014 10:50:08 GMT
Man, that's one expensive distributor! Now to get the most out of it you should also change the timing chain.
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D'oh!
Apr 1, 2014 17:03:01 GMT
Post by Simon H on Apr 1, 2014 17:03:01 GMT
Just ordered up a 123ignition this morning gotta say, the idea of plugging the rover into my laptop pretty amusing. Watch this space. I bet you to it :
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Post by barryr on Apr 1, 2014 18:20:03 GMT
Bet the bin was cheaper than a dedicated diagnostics console!
Slightly off topic but for those of us with modern cars have you seen the Bluetooth obd2 dongles available on eBay for less than a tenner?
You can download a couple of free obd2 apps also so real time sensor info from your car is finally affordable!
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Post by guidedog on Apr 2, 2014 9:06:32 GMT
Dur Its all a foreign language to me ;-|
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gollop
Rover Fanatic
Posts: 108
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D'oh!
Apr 3, 2014 12:06:20 GMT
Post by gollop on Apr 3, 2014 12:06:20 GMT
Ok so I'm sat here with the new dizzy plugged into the PC. I'm totally lost do any if you guys have a screen grab of your curves? Yes yes I know very good. I'm lost when it comes to centrifugal and manifold absolute pressure advance/retard curves. It comes with settings for Porsches and volvox but nothing preloaded for a rover v8. Anybody?
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D'oh!
Apr 3, 2014 19:56:44 GMT
Post by Simon H on Apr 3, 2014 19:56:44 GMT
Here's one that should get you started. You may need to shift the values according to if you have set the timing at TDC or 6* BTDC depending on the installation instructions for your dizzy. It should get you running though. If there is a setting for dwell, start with 26*.
RPM ADV
500 3 1000 6 1500 11 2000 15 2500 19 3000 23 3500 25 4000 26 4500 27 5000 28 5500 29 6000 30
As for the vacuum gobbledegook I have this to go on:
0* Hg = 0 2* Hg = 0 4* Hg = 2 6* Hg = 4 8* Hg = 6 10* Hg = 8 12* Hg = 10 14* Hg = 12
I have yet to connect the vacuum to mine because the pipe won't reach the external box of tricks on my set up. That will be Sunday's job.
Good Luck! Simon H
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on Apr 3, 2014 20:48:08 GMT
Cheers simon that's a massive help.
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gollop
Rover Fanatic
Posts: 108
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D'oh!
Apr 4, 2014 2:08:14 GMT
Post by gollop on Apr 4, 2014 2:08:14 GMT
so is the Manifold absolute pressure advance/retard curve the vacuum gobbledegook?
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D'oh!
Apr 4, 2014 21:04:22 GMT
Post by Simon H on Apr 4, 2014 21:04:22 GMT
Yes, I think it is. I programmed those figures in and will see what happens when I get the vacuum connected on Sunday, with a bit of luck.
Simon H
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gollop
Rover Fanatic
Posts: 108
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D'oh!
Apr 5, 2014 3:40:31 GMT
Post by gollop on Apr 5, 2014 3:40:31 GMT
Wow I'm having some really issues here. Ok I've programmed up the 123ignition unit, attachéd to the unit as specced and the engine turns over and doesn't want to fire. On the dashboard read it it says I'm not got any current coming from the coil? Any chance I could have killed the coil some how? It's a gt40 so should all be good as this is what 123 specced up. am I missing something really simple here or am I loosing my mind?
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on Apr 5, 2014 5:06:31 GMT
Ok I've got spark off my coil. But nothing from my spark plugs, logically I've checked the rotor arm and button but with no joy. Ideas?
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Deleted
Deleted Member
Posts: 0
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D'oh!
Apr 5, 2014 9:38:16 GMT
Post by Deleted on Apr 5, 2014 9:38:16 GMT
Re-boot laptop?!
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D'oh!
Apr 5, 2014 18:20:02 GMT
Post by Simon H on Apr 5, 2014 18:20:02 GMT
Did you run a separate earth to the dizzy body? (Don't rely on the clamp)
Is the dizzy set to 8 cylinders? (Via software)
Have you done my trick and set the rev limiter to zero or some improbably low figure?
Are you sure the dizzy isn't 180 degrees out of time?
Have you used the new dizzy cap or your old one? If it's the new one are the fittings for the leads the same as standard? Or are they different in some way so that you have to buy a set of dedicated leads?
Simon H
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Post by Phil Nottingham on Apr 5, 2014 19:53:32 GMT
Why bother - fit contact breakers as Rover Co intended
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D'oh!
Apr 5, 2014 20:28:00 GMT
Post by Simon H on Apr 5, 2014 20:28:00 GMT
Why bother - fit contact breakers as Rover Co intended I did it because my P5B came with a full tank of LPG and being a tight assed Yorkshireman I couldn't let it go to waste... And in my inverse logic way of thinking I spent several times the value of the gas in the tank to make it work properly on both petrol AND gas. In fact, I think it goes a bit better on gas than petrol... But maybe I need to tweak the advance map for petrol. The points dizzy is in the boot along with a timing light 'just in case' Simon H
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on Apr 6, 2014 3:25:24 GMT
Cheers simon the only one I haven't tried is the desperate earth off the dizzy. I did see that in the instructions but thought it'd be ok without it. The dizzy is lined up TDC, defiantly not 180 out of alignment it's a new dizzy cap that came with the unit but it's near on identical to the one I took off. I've restated the laptop a fair few times with no joy. So I'm off downstairs to the garage to wack an earth off the dizzy, stay tuned!
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Post by Simon H on Apr 6, 2014 8:27:36 GMT
Is the map you have created on the laptop definitely loaded and saved in the dizzy? On mine you can get the map on the screen and load it into the advance controller. But if you don't click the APPLY button the system goes back to how it was before when the ignition is next switched off. So the next time you switch on it has forgotten the new map because you didn't click APPLY. At the risk of preaching to the converted, also double check that the leads are properly connected to the dizzy cap.
Good luck
Simon H
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on Apr 7, 2014 4:02:44 GMT
Yes defiantly got the curves loaded in they reappear when unplugged and rebooted. The ht leads are fully in for sure tonight I'm going to pull it back out and put the earth wire on so stay tuned.
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on Apr 8, 2014 11:53:34 GMT
Ok I spoke with frank from 123 he reckons it might be he coil! I've got a gt40 which he thinks shouldn't work. I think the gt40 has 3 ohms but apparently I should be running a 1,2 ohms instead. Also he said it is important the primary circuit has no resistance. "Battery to ignition switch, ignition switch, coil, ignition, Blue wire of the ignition back to the minus of the battery."
But I've never had a problem before?
Tonight I changed out the coil for one I have lowing around and also ran an earth to the underside of the dizzy. I actually begain to get a better sound of the car really trying to kick over, just before the battery died aaaarrrggghhhh!
Back at it tomorrow then.
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D'oh!
Apr 8, 2014 19:14:30 GMT
Post by Simon H on Apr 8, 2014 19:14:30 GMT
Ah. My dizzy was supplied with a suitable Lucas coil. I do remember reading something about the specs for the coil but since it came with one I skipped that bit...
Simon H
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on Apr 8, 2014 22:33:51 GMT
Yeah I've just seen an email from the Netherlands again this morning, apparently the coil I have is perfect. All I can conclude is it must be the earth. The battery is charging so when it's chafed we'll see.
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gollop
Rover Fanatic
Posts: 108
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Post by gollop on Apr 10, 2014 12:46:00 GMT
Success! Finally got it up and working. I eventually just turned rotating the dizzy and just listening and got it firing, my timing lights also giving up the ghost but I had a couple of test runs so come the weekend.
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