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Author Topic: Ingition advance curves  (Read 1400 times)
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HFStuart
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« on: May 07, 2012, 04:35:08 PM »

Does anyone have the ignition curve for a 2.0 on electronic ignition? Are they the same as the points ones? Also does anyone have any information on the effect of the vacuum advance control specifcally how many degrees can it change the advance by?

I'd like the info to set up a base map for my Megajolt to get it running well enough to take it to be mapped.
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lukasdeopalenica
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« Reply #1 on: August 20, 2012, 09:57:14 PM »

Here you are, however it is in French, but is easy to understand. +/-2deg
Does anyone know if injected models were equipped with a vacuum advancer? My early i.e. model has only an innertial mechanism, however the distributor (marelli) has plugged opening for a vacuum one.


* ignition.jpg (69.06 KB, 825x515 - viewed 271 times.)

* ignition curves.jpg (31.42 KB, 412x283 - viewed 319 times.)

* ignition curves1.jpg (40.35 KB, 385x460 - viewed 314 times.)
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Lancia Beta HPE 2000i.e. '82 rosso corsa
SAAB 900i 16V Aero, '93 solid black
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Honda CB125 K6 '76 electric blue
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lukasdeopalenica
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« Reply #2 on: August 20, 2012, 10:07:04 PM »

small correction. From the above diagrams - it seems that 2.0 engines has only innertial advancers, vacuum advancers were placed only in 1.3 and 1.6 units and for these the advance is of 12deg. 
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Lancia Beta HPE 2000i.e. '82 rosso corsa
SAAB 900i 16V Aero, '93 solid black
Subaru Outback 3.0R
Honda CB125 K6 '76 electric blue
Specialized Epic & Stumpjumper
WestonE
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« Reply #3 on: August 23, 2012, 05:46:34 PM »

Stuart

The First GC Book has the 3D advance map for the 130TC assuming you have a throttle angle input. Also Darren Cooksey runs injected MegaSquirt on his Monte. Enjoy

Eric 
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HFStuart
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« Reply #4 on: August 23, 2012, 06:56:16 PM »

It does??

I'll have a hunt for it  that would be ideal.

NB I sold some Alfa alloys on eBay yesterday - the buyer turned out to be David from St.Albans who wanted to put them on the Delta Evo hubs he's putting on his Monte. He said they're temporary while he looks for 5 stud Compomotive FHs - good luck to him with that one!
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WestonE
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« Reply #5 on: August 24, 2012, 10:21:36 AM »

Stuart

NB I sold some Alfa alloys on eBay yesterday - the buyer turned out to be David from St.Albans who wanted to put them on the Delta Evo hubs he's putting on his Monte. He said they're temporary while he looks for 5 stud Compomotive FHs - good luck to him with that one!

I can see how he would do the rear hubs easily as the Delta centres just press into the OE Bearings, but the fronts are harder however I believe PIX X19 did this for his V6 X19 conversions with custom hub centres. David from St Albans just might be David Beale in which case it will be done as he has managed most things like a FI VX Monte back in the 80s.

4 bolts holes all round is fine with me. PS you can get those nasty bolt on adaptor/ spacer converters but I would not touch them with a barge poll when you consider the need to ensure correct centring, 9 bolts a wheel and the extra un-sprung weight. 

Eric
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HFStuart
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« Reply #6 on: August 24, 2012, 10:39:17 AM »

Yes, it was Dave Beale, couldn't remember his surname.

Ah yes, bolt on adaptors..they belong in the same place as 'wobble bolts' and plastic spigot rings
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