Jakey
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Registered: 4th Jun 07
Location: Sandbach
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My mate with the XE mini clubman on carbs has ordered a shift light for it. The bloke selling it has asked whether it is single coil or wasted spark. Im baffled, any ideas?
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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Single coil I would imagine.
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Jakey
Premium Member
Registered: 4th Jun 07
Location: Sandbach
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I thought that as it uses a single coil, but i don't want to rule out wasted spark until im clear what it is.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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Is it a dizzy or coilpack xe?
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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wasted spark is when 2 plugs fire but only 1 is on the compression stroke, so one sparks when exhaust gas is expelled, harmless but keeps electrical shit more simple.
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Jakey
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Registered: 4th Jun 07
Location: Sandbach
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Dizzy.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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Aye will be 1 plug fireing at a time then.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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Actually how many coils does it have?
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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dizzys can have wasted spark too.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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Again
some wasted spark ignitions have 1 coil (to the eye) but the internals are seperate....its all coming back
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Jakey
Premium Member
Registered: 4th Jun 07
Location: Sandbach
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Erm. It's a dizzy cap run c20xe on twin 45s?
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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Suppose the only way of really knowing is taking the plugs out and see if 2 spark at the same time.
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LeeM
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Registered: 26th Sep 05
Location: Liverpool
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does the xe have a cam and crank sensor? if its got both it'll be single coil. wasted spark eliminates the need for a cam sensor
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stubs
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Registered: 30th Jun 02
Location: Bolton
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quote: Originally posted by LeeM
does the xe have a cam and crank sensor? if its got both it'll be single coil. wasted spark eliminates the need for a cam sensor
Why aren't cars more simple like this any more?
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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wonder if wasted spark is more prone to popping or backfiring
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LeeM
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Registered: 26th Sep 05
Location: Liverpool
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exhaust gas will have been mostly expelled and the valve be nearly closed by the time you get the spark on that cylinder, so unless is running super rich i doubt it, although i suppose theres the chance
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Mattb
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Registered: 2nd Feb 03
Location: Under your sisters bed
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Seriously some of the replies are rediculous....
Wasted Spark = Normally a single coilpack which is internally split in two firing cyls 1+4 then 2+3 at the same time - This is what is fitted to Dizzyless C20XE's
Single coil - One coilpack per cylinder - as fitted with most modern engines these days. They fire independantly of each other..
As regards the original post - let the guy know its running a dizzy
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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Single coil doesn't have to be a coilpack per cylinder, ie my old nova had a single coil with dizzy but isn't wasted spark as the dizzy arm only hits 1 "electode" at a time.
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Mattb
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Registered: 2nd Feb 03
Location: Under your sisters bed
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Yes distributer ignition system does use a single large ignition coil, however i have never ever heard it refered to as single coil ignition
its like refering to a Single carb set up as single point injection...
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3CorsaMeal
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Registered: 11th Apr 02
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spark plugs make sparks
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Mattb
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Registered: 2nd Feb 03
Location: Under your sisters bed
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quote: Originally posted by 3CorsaMeal
spark plugs make sparks
Yes... yes they do......
Would you like a crayon??
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Steve
Premium Member
Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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nah
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