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ignition leads for gas
Moderators: toaddog, TWISTY, V8Patrol, Moderators
ignition leads for gas
has any one had any exp with gaslead technology victoria looking to put them on a gq straight gas
I have a NL Pajero. It has been on gas/petrol since new, mainly gas.
I had some backfiring issues (minor issues only, no damage) and replaced the plugs and leads. Leads were Top Gun. Absolute sh1t. Major backfires, blew the air cleaner box apart. I could see the spark tracking down the core of the leads, and could see the spark jumping - fortunately to earth rather than another plug lead. I had to rebuild the airflow meter. Not happy. After 10000 km, I threw them away and got a set of Bosch - no problems now, although I am coming up to another set of plugs.
I queried NGK in Melbourne and they sent me a listing of recommended plugs for cars on gas. They generally recommend one grade colder plugs. Note the NGK numbering system uses a higher number for a colder plug ie PFR6G plugf for petrol becomes a PFR7G plug for gas. Also, I would recommend closing the plug gap slightly to reduce the voltage required to jump the gap. This reduces the tendency for cross firing (backfires).
If you are going to direct gas, you should have less chance of damage if you get a backfire, because there is less unburnt gas in the intake manifold to go bang. When you think about it, it isn't a given cylinder that backfires - the inlet valve is closed when the plug fires. It is a flashover to another plug lead which then fires the plug in another cylinder with its inlet valve open that causes the damage. With the bi-sexual system of petrol and gas, the mixer is usually set upstream from the throttle valve and you have a whole manifold system full of gas mixture ready to go.
I am about to order a new set of plugs for my Pajero and my wife's Magna (also on gas) and would welcome anyone else's comments on plugs and leads.
I had some backfiring issues (minor issues only, no damage) and replaced the plugs and leads. Leads were Top Gun. Absolute sh1t. Major backfires, blew the air cleaner box apart. I could see the spark tracking down the core of the leads, and could see the spark jumping - fortunately to earth rather than another plug lead. I had to rebuild the airflow meter. Not happy. After 10000 km, I threw them away and got a set of Bosch - no problems now, although I am coming up to another set of plugs.
I queried NGK in Melbourne and they sent me a listing of recommended plugs for cars on gas. They generally recommend one grade colder plugs. Note the NGK numbering system uses a higher number for a colder plug ie PFR6G plugf for petrol becomes a PFR7G plug for gas. Also, I would recommend closing the plug gap slightly to reduce the voltage required to jump the gap. This reduces the tendency for cross firing (backfires).
If you are going to direct gas, you should have less chance of damage if you get a backfire, because there is less unburnt gas in the intake manifold to go bang. When you think about it, it isn't a given cylinder that backfires - the inlet valve is closed when the plug fires. It is a flashover to another plug lead which then fires the plug in another cylinder with its inlet valve open that causes the damage. With the bi-sexual system of petrol and gas, the mixer is usually set upstream from the throttle valve and you have a whole manifold system full of gas mixture ready to go.
I am about to order a new set of plugs for my Pajero and my wife's Magna (also on gas) and would welcome anyone else's comments on plugs and leads.
I just had a set of leads custom made for Queensland igniition leads. i relise thats no where near you, but they were 9mm, something core insulated leads, and i paid 80 for the 6 plus a coil lead.
However, i went into burson's auto, formaly known as coventry, and asked for a set of 'Gas' only plugs, and he pulled out the book, said "you currently use a NGK BP6..., so best bet to go 2 steps colder, i would recommend the BP4..." General consensus is that i have now got worse plugs than i had to start with.
As they are already fitted, do you think its possible to pull them out and have them replaced with the right ones, or do i cut my loses and purchase another set?
However, i went into burson's auto, formaly known as coventry, and asked for a set of 'Gas' only plugs, and he pulled out the book, said "you currently use a NGK BP6..., so best bet to go 2 steps colder, i would recommend the BP4..." General consensus is that i have now got worse plugs than i had to start with.
As they are already fitted, do you think its possible to pull them out and have them replaced with the right ones, or do i cut my loses and purchase another set?
92' Mav. seat covers, air freshner, floor mats, half eaten sandwich..........
http://www.outerlimits4x4.com/ftopic147700.php
http://www.outerlimits4x4.com/ftopic147700.php
I only use leads from ICE, we can supply them, the Bosch leads are OK in the lead but the boots go hard and seal poorly and the clip on the plug lead isn't reinforced with spring steel as the ICE ones are which means they get loose on the plug.
Cheer
Joel
Cheer
Joel
-Pre trip inspections/ servicing
-Suspension/ custom modifications
-4wd Dyno & tuning
-Qualified mechanics
-Suspension/ custom modifications
-4wd Dyno & tuning
-Qualified mechanics
Re: ignition leads for gas
run ice ignition leads mate you know i've stuffed around with the crap a bitnarns1mav wrote:has any one had any exp with gaslead technology victoria looking to put them on a gq straight gas
1993 Gq lwb with added xtra's :) sold
fj60,lifted,35s,33s for daily, 3f power!
fj60,lifted,35s,33s for daily, 3f power!
Resident Terrorist
Running some Gas spec leads from ICE Ignition in Melb on my duel fuel Falcon. Rang him and paid over the phone at 4pm and they arrived in the post the next day, no idea how he managed that. Great service and he offered 300,000 k warranty on them, boots are easy to get off as well.
Definately worth spending a bit extra for good gear when running LPG/Duel fuel. Was around $100 delivered for a 6cyl set about 18 months back
Definately worth spending a bit extra for good gear when running LPG/Duel fuel. Was around $100 delivered for a 6cyl set about 18 months back
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