Ignition leads resistance....?

Bluetech · 30th June 2006, 07:57 PM

Just a quick question. When is a good indication that the lead is stuffed or getting dodgy?

I ran the meter across my leads today and got ( in order of longest to shortest ) 10 ohms, 8 , 7.5 and 5 ohms is that about right/normal or not?

Cheers

Mike 8)

americ_ian · 30th June 2006, 08:17 PM

11- 12 is the highest u wanna go

good leads are around 5- 7

MSD leads are 0.8 :wink:

Horny_Devil · 30th June 2006, 08:40 PM

Quote:

Originally Posted by americ_ian

11- 12 is the highest u wanna go

good leads are around 5- 7

MSD leads are 0.8 :wink:

tut tut tut

not always my friend

have a read of the following http://www.tprmag.com/issue/4/4_wires.shtml

Horny_Devil · 30th June 2006, 08:45 PM

oh and by the way y cant test it with ur multi meter as it loads it down :wink:

u need to use something like a mega which puts a lil more juice through it than the 9v that the multi meter uses, this provides a much more accurate reading.

the things u learn at school that u never think ull use again

americ_ian · 30th June 2006, 08:56 PM

well hmmm that site says MSd is actualy on par with 0.8 like i said

Horny_Devil · 30th June 2006, 09:15 PM

Quote:

Originally Posted by americ_ian

well hmmm that site says MSd is actualy on par with 0.8 like i said

kila ohm buddy

ur fine to compre to ians results as they are accurate as ull be testing with the same type of equipment.

the results on the site i posted are in KILA ohms and just for ian there are 1000 ohm's in a kila ohm.

americ_ian · 30th June 2006, 09:20 PM

^^ pfft dont care my meters rears 1000kohms like any other one

Bluetech · 30th June 2006, 10:50 PM

Quote:

Originally Posted by americ_ian

11- 12 is the highest u wanna go

good leads are around 5- 7

MSD leads are 0.8 :wink:

Thought I had a good excuse to splash out on new leads, oh well

[QUIKdc2] · 30th June 2006, 11:35 PM

Quote:

Originally Posted by Bluetech

Quote:

Originally Posted by americ_ian

11- 12 is the highest u wanna go

good leads are around 5- 7

MSD leads are 0.8 :wink:

Thought I had a good excuse to splash out on new leads, oh well

Don't let them stop ya

:wink:

Bluetech · 1st July 2006, 12:41 PM

Well there you go, if you look you shall find

ops:

From the Topgun website

HRT · 2nd July 2006, 12:39 PM

They are all relative. Your leads sound about right. You usally get one or 2 leads on a set fail rather than all at once and yours do seem to be about the right resistance. There are lower resistance leads you can buy, but that doesn't make them any better. General idea is 8k (and that kilo, not kila) ohm per foot of cable. The likes of Top Gun and other will probably be less

chuckles2 · 2nd July 2006, 07:24 PM

resistance figure isnt so important aslong is 1 is not really high or really low, whats important is that they are all resonably similar.

and using a multimeter to test is fine it may not be the text book way of doing it but its the real world not a library.

americ_ian · 2nd July 2006, 09:21 PM

Quote:

Originally Posted by chuckles2

resistance figure isnt so important aslong is 1 is not really high or really low, whats important is that they are all resonably similar.

and using a multimeter to test is fine it may not be the text book way of doing it but its the real world not a library.

jase must hide in the library :wink:

SQUERT · 2nd July 2006, 11:52 PM

Quote:

Originally Posted by Bluetech

Quote:

Originally Posted by americ_ian

11- 12 is the highest u wanna go

good leads are around 5- 7

MSD leads are 0.8 :wink:

Thought I had a good excuse to splash out on new leads, oh well

Just buy them anyway

SiR-accord-T · 3rd July 2006, 08:12 PM

msd leads are 50 ohms per foot (0.05kohms/ft) just so you know :wink:

30th June 2006, 07:57 PM	#1 (permalink)
Bluetech Senior Member 5,000rpm (VTEC Power!) Join Date: Jun 2002 Posts: 1,110 Location: Kaiapoi	Ignition leads resistance....? Just a quick question. When is a good indication that the lead is stuffed or getting dodgy? I ran the meter across my leads today and got ( in order of longest to shortest ) 10 ohms, 8 , 7.5 and 5 ohms is that about right/normal or not? Cheers Mike 8) __________________ Myspace My online gallery

30th June 2006, 08:17 PM	#2 (permalink)
americ_ian Senior Member 18,000rpm+ Honda F1! Join Date: Jul 2004 Posts: 10,951 Location: Hamilton	11- 12 is the highest u wanna go good leads are around 5- 7 MSD leads are 0.8 :wink: __________________ Ex D16a Ex b16a, ex b18cr, ex h22a turbo, ex h2b, ex k20a.... Current: F20c!!!!!! 12.8 @ 171.88 1.7 60ft!

30th June 2006, 08:45 PM	#4 (permalink)
Horny_Devil Senior Member 18,000rpm+ Honda F1! Join Date: Jun 2002 Posts: 12,526 Location: Auckland	oh and by the way y cant test it with ur multi meter as it loads it down :wink: u need to use something like a mega which puts a lil more juice through it than the 9v that the multi meter uses, this provides a much more accurate reading. the things u learn at school that u never think ull use again __________________ D Series Guru My Profile - My Website - My Build Thread V2.0

30th June 2006, 08:56 PM	#5 (permalink)
americ_ian Senior Member 18,000rpm+ Honda F1! Join Date: Jul 2004 Posts: 10,951 Location: Hamilton	well hmmm that site says MSd is actualy on par with 0.8 like i said __________________ Ex D16a Ex b16a, ex b18cr, ex h22a turbo, ex h2b, ex k20a.... Current: F20c!!!!!! 12.8 @ 171.88 1.7 60ft!

30th June 2006, 09:20 PM	#7 (permalink)
americ_ian Senior Member 18,000rpm+ Honda F1! Join Date: Jul 2004 Posts: 10,951 Location: Hamilton	^^ pfft dont care my meters rears 1000kohms like any other one __________________ Ex D16a Ex b16a, ex b18cr, ex h22a turbo, ex h2b, ex k20a.... Current: F20c!!!!!! 12.8 @ 171.88 1.7 60ft!

1st July 2006, 12:41 PM	#10 (permalink)
Bluetech Senior Member 5,000rpm (VTEC Power!) Join Date: Jun 2002 Posts: 1,110 Location: Kaiapoi	Well there you go, if you look you shall find ops: From the Topgun website __________________ Myspace My online gallery

2nd July 2006, 12:39 PM	#11 (permalink)
HRT Senior Member 700rpm (Idle) Join Date: May 2003 Posts: 152	They are all relative. Your leads sound about right. You usally get one or 2 leads on a set fail rather than all at once and yours do seem to be about the right resistance. There are lower resistance leads you can buy, but that doesn't make them any better. General idea is 8k (and that kilo, not kila) ohm per foot of cable. The likes of Top Gun and other will probably be less

2nd July 2006, 07:24 PM	#12 (permalink)
chuckles2 Senior Member 7,000rpm (Peak Power) Join Date: Aug 2004 Posts: 4,167 Location: Christchurch	resistance figure isnt so important aslong is 1 is not really high or really low, whats important is that they are all resonably similar. and using a multimeter to test is fine it may not be the text book way of doing it but its the real world not a library. __________________ www.bebo.com/oscarp466

3rd July 2006, 08:12 PM	#15 (permalink)
SiR-accord-T Senior Member 4,000rpm (Taxi Drag) Join Date: May 2004 Posts: 554 Location: Christchurch	msd leads are 50 ohms per foot (0.05kohms/ft) just so you know :wink: __________________ I love my son

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode