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Autolite Sparkplugs + Power 

 

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Posted: Mon Jul 04, 2005 10:41 am 
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XRFan101 wrote:
I wouldnt mind giving these autolite plugs a go, i need a tune up done very soon so yeah wouldnt mind knowing if they suitable for LPG cars?


Just get one heat range hotter for L.P.G. although since your is an XR6, your plugs should already be that compared to standard Falcons plugs.

 

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Posted: Mon Jul 04, 2005 12:35 pm 
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they were no good on my car - i threw them in the bin

 

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Posted: Mon Jul 04, 2005 10:14 pm 
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Have just fitted the Autolites and removed the Bosch super 4's and there is a difference.

Firstly, the response from the Autolites is better and there is more power there.

I also believe the fuel burn is better, the exhaust does not smell as fuelly, as we all know EFI Fords run rich before EFI mods.

 

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Posted: Mon Jul 04, 2005 10:39 pm 
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arrr another happy customer lol so they made a difference hey
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Posted: Mon Jul 04, 2005 10:40 pm 
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Well I do use them but honestly don't think there's much difference to a good set of plugs.

certainly nothing to get excited about or that you could tell in any blind test without a dyno and a lot of runs.
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Posted: Mon Jul 04, 2005 11:11 pm 
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I wouldnt pay too much attention to a few kws on a dyno. From the two dyno runs my car did on sunday, the second run was down 4kws... and it was within minutes of the first run
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Posted: Tue Jul 05, 2005 1:21 am 
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Yeh Spider GT with the wade 1604 cam and advance Extractors and 2.5inch low restriction system you can notice the difference.

Its only subtle but it is better.

These were the standard ones also.

 

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Posted: Sun Jul 10, 2005 7:38 pm 
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@Spider_GT
are they 985 or 64 autolite plugs?
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Posted: Sun Jul 10, 2005 8:11 pm 
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would not have a clue the ones jmm sells
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Posted: Sun Jul 10, 2005 8:28 pm 
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Wats the number written on the one you got?
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Posted: Sun Jul 10, 2005 8:28 pm 
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twr7cx wrote:
XRFan101 wrote:
I wouldnt mind giving these autolite plugs a go, i need a tune up done very soon so yeah wouldnt mind knowing if they suitable for LPG cars?


Just get one heat range hotter for L.P.G. although since your is an XR6, your plugs should already be that compared to standard Falcons plugs.


I've seen these plugs on ebay

with mine the LPG plugs are projected gap plugs, they are physically longer than petrol plugs, tickford specify these for factory duel fuel cars ... i've had normal petrol plugs (but hotter heat range than petrol cars) and the engine is harder to start, when it's on gas that is
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Posted: Sun Jul 10, 2005 8:33 pm 
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dddp! wrote:
with mine the LPG plugs are projected gap plugs, they are physically longer than petrol plugs, tickford specify these for factory duel fuel cars ... i've had normal petrol plugs (but hotter heat range than petrol cars) and the engine is harder to start, when it's on gas that is


You sure about that? From what I've read Tickford only specify to change the heat range (ie use the XR6 plugs) for the EF/EL LPG cars.
If you look at the part numbers listed, there the same for both, except the one has a higher number signifying a different heat range. But since everything else is the same there the same physical size plug

 

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Posted: Sun Jul 10, 2005 8:34 pm 
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The JMM autolite plugs are 985.

 

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Posted: Sun Jul 10, 2005 9:55 pm 
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tickford specs from the supplementary factory dual fuel set up

"motorcraft AGS42CC for running in purposes then fit motorcraft AGS23CC, Gap 0.9mm

vehicles operating continously on LPG require a colder range spark plug than vehicles running on petrol"

replace spark plugs every 30,000km"

... mine have been in for over 60,000km now :shock:
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Posted: Sun Jul 10, 2005 10:10 pm 
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dddp! wrote:
tickford specs from the supplementary factory dual fuel set up

"motorcraft AGS42CC for running in purposes then fit motorcraft AGS23CC, Gap 0.9mm

vehicles operating continously on LPG require a colder range spark plug than vehicles running on petrol"

replace spark plugs every 30,000km"

... mine have been in for over 60,000km now :shock:


It only says in there about differentgap and different heat range, no mention of plugs that are physically longer.

 

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