Ignition leads - GAS

[Big Red Toy]

After viewing this http://www.topgunleads.com.au/leadsresist.html

Most original equipment leads are manufactured to the generally recognised 16 K ohms per metre standard. This is the meaning of the R16 often stamped on the lead.

LPG & Heavy Duty - 8mm Ignition Wires:
Top Gun recommends spiral wire MAX 300 leads for all LPG engines. Spiral wire cable has a resistance of
less than 1000 ohms per metre length. Please refer to HEAVY DUTY - LPG WIRES as detailed under the ³Products² section of this website..

from another post im curious as to this sorta tech as my patrol is on straight gas research (350 chev)
So normal leads are 16,000 ohms where as gas ones are 1,000 ohms does this make a huge difference??? Any views appreciated

cheers
Andrew

[Bad JuJu]

Same site different link --> http://www.topgunleads.com.au/products2.html

Sounds convincing but I'n no expert..


<off_topic_but_maybe _still_useful>

If you are running straight gas then you will probably have raised the compression a bit as lpg has a higher octane rateing than petrol, probably had dizzy regraphed to take best advantage of the change of fuel type too.
This usually means same total advance but comes in MUCH earlier in the rpm range/vacuume conditions typically achieved by
a) Heavier centrafugal weights
b) lighter springs on the existing weights.
c) different vac advance diaphram
d) a combination of any of the above

</off_topic_but_maybe _still_useful>

[hophoar]

Leads will make a huge difference with the gas, especially spiral wound compared to carbon ones . When the engine is loaded up is when you'll usualy notice the difference. A good set of leads should cost @ !00, have has good results from Gasmeiser leads, these are purpose built for LPG or you can go with some of the more expensive ones, eg : Thundercords which you can get custom built to suit your motor the way you want.

[Big Red Toy]

cool, how about the ones from gas research them selves??? thats what was on the car but was mssing a feew so i bought a generic brand for the time being
Thanks for feedback

[hophoar]

Generic ones are alrigh , but you'll get 10 times the life out of the spiral wound ones. The gasresearch should be spirals, just measure the Ohms for each and if there under 1000 you should be sweet. As said before the boots and connectors also help.

[80UTE]

I GET THEM CUSTOM MADE BY IGNITION DEVELOPMENTS TO THE LENGHTS I REQUIRE AND THE CORRECT BOOTS BOTH ENDS FOR THE JOB . ITS ABOUT TWICE THE COST OF OF QUALTY AUTO STORE LEADS THE QUAILTY OF THE BOOT ON HOW THE SEAL ON THE DIST AND PLUG MAKES THE DIFFERENCE ON AN OFFROADER THATS SUBJECT TO MUDDY WATER. I NEVER MISFIRE NO MATTER HOW DEEP AND DIRTY I GET. YA CARNT SKIMP ON THIS STUFF ON A PETROL/GAS OFFROADER.

WALLY

[sudso]

Interesting read. I'm checking my leads in the morning.

Heard that Platinum plugs or similar are the go too for LPG.

[BowTieGQ]

I have ICE leads on my Patrol and wifes Commodore. They are good quality. You can see and feel it. They are about $100. Performance Ignition Services have some good ones as well. Unsure on price though.

[sudso]

So does anyone get static interference on their radio or UHF with these special leads?

Also interesting to read on Top Guns site how LPG has the ability to "quench" electrical energy (spark).
No wonder a stronger spark is needed.

[hophoar]

[quote="sudso"]So does anyone get static interference on their radio or UHF with these special leads?

Nope none at all.