Magnecore Leads

Magnecore Leads

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ChimpOnGas

Original Poster:

9,637 posts

178 months

Sunday 20th July 2014
quotequote all
So here I am in deepest France & she drops onto 7 confused

I know LPG puts extra load on HT leads but there's no excuses for this, especially as the people at Magnecore market their leads as the best there is for gas.

BULSHP!!!!






This is the second one to blow up on me, you really don't need this kind of nonsense on a Sunday in Bordeaux nono

shake n bake

2,221 posts

206 months

Sunday 20th July 2014
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My old boss whos delt with tvrs and anything else fast for 30 odd years swore magnacor leads are very poor, they dont work well with the rover v8. So many customers come in to say its eunning poorly, and so many times a set of these would habe been put on recently. Stick to stock!!
Hope you can get yourself a lead somewhere to get you on all 8 soon.

ChimpOnGas

Original Poster:

9,637 posts

178 months

Sunday 20th July 2014
quotequote all
shake n bake said:
My old boss whos delt with tvrs and anything else fast for 30 odd years swore magnacor leads are very poor, they dont work well with the rover v8. So many customers come in to say its eunning poorly, and so many times a set of these would habe been put on recently. Stick to stock!!
Hope you can get yourself a lead somewhere to get you on all 8 soon.
Fortunately I carry spare leads so it's all fixed.

I run coil packs so leads would be impossible to find here in France Land.

Magnecores, never again for me mad

ChimpOnGas

Original Poster:

9,637 posts

178 months

Sunday 20th July 2014
quotequote all
I was running extenders and socks on the back two cylinders, look closely at the pictures.

At first it seems like they've been scorched on the exhaust manifold but I can assure you that is not the case here.

The lead literally exploded and the shorting created the scolding marks.

UTTER RUBISH!!!!!

rigga

8,727 posts

200 months

Sunday 20th July 2014
quotequote all
I see you run the insulated socks on the leads, possibly keeping heat in and around the lead instead of having some airflow to dissipate it? Looks heat related damage.

zed4

7,248 posts

221 months

Sunday 20th July 2014
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I have Magnacore leads and I've heard that people often prefer standard Bosch leads. I'm considering changing mine back to Bosch, my leads are startign to break down where the previous owner had cable tied them all together.

carsy

3,018 posts

164 months

Sunday 20th July 2014
quotequote all
rigga said:
I see you run the insulated socks on the leads, possibly keeping heat in and around the lead instead of having some airflow to dissipate it? Looks heat related damage.
Could well be this.

I`d look for some yank leads Dave from Real Steel when you get back. Night and day ahead of anything else i have seen.

Sardonicus

18,928 posts

220 months

Sunday 20th July 2014
quotequote all
rigga said:
I see you run the insulated socks on the leads, possibly keeping heat in and around the lead instead of having some airflow to dissipate it? Looks heat related damage.
Nope, tried this myself and after a long hard run you can pull those socks up and pull off the HT lead and comfortably keep the boot in your hand, Dave uses the same socks as I.

ChimpOnGas

Original Poster:

9,637 posts

178 months

Sunday 20th July 2014
quotequote all
HT leads don't need airflow to cool them, and while it looks like the failed lead was scorched by the manifold I can assure you that wasn't the case.

I use extenders on the rear two cylinders and the leads aren't anywhere near close enough to the manifolds to get scorched, the boots are just there as a belt & braces measure.

The problem with the leads on the rear cylinders is not their proximity to the manifolds but the fact they are the longest in the set and I'm running LPG.

LPG is harder to strike so it puts a lot more load on the ignition system than petrol, the very end of the longest two ignition leads is where that load will be greatest so that'll always be the most likely point of failure.

Hoofa

3,151 posts

207 months

Sunday 20th July 2014
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Had the same problem, in the end fitted heat resistant socks on mine

rigga

8,727 posts

200 months

Sunday 20th July 2014
quotequote all
Hoofa said:
Had the same problem, in the end fitted heat resistant socks on mine
He has them already, but seemingly not the issue, what leads are recommended for running on gas then? You can't be the only one who needs more robust leads, anyone know a better product?

QBee

20,904 posts

143 months

Sunday 20th July 2014
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I never had lead issues on my LPG cars. I use Lumenition pale blue leads on my TVR. Not had a single issue with them. But not LPG.

blitzracing

6,387 posts

219 months

Sunday 20th July 2014
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The Red leads are supposed to be tougher for race use !! I wonder how long this post will remain before the Megnecore Mafia has it pulled under name and shame then-- Ive heard they like to stomp on anything that bad mouths their product. Watch this space.....

SILICONEKIDOBHP

14,997 posts

230 months

Sunday 20th July 2014
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The heat socks have trapped the heat !

macdeb

8,492 posts

254 months

Sunday 20th July 2014
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rigga said:
Looks heat related damage.
^^^^ yes exactly what I thought.

SILICONEKIDOBHP

14,997 posts

230 months

Sunday 20th July 2014
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Quinny is in that area ,maybe he could tow you home wobble

blitzracing

6,387 posts

219 months

Sunday 20th July 2014
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KV85's??

Construction Type......................... One piece, no cost saving layers used.
Insulator Jacket Material............ Extreme heat resistant TC-1500-HS
high strength aerospace silicone rubber
formulated to dissipate heat away from
section exposed to high temperatures.
Heat Resistance...........................service temp... KV85: 600' F (320' C) Peak 1000 'f for 3 mins.


NZ fan

310 posts

133 months

Sunday 20th July 2014
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If it's heat resistance you're after wouldn't these be worth a crack ?


ChimpOnGas

Original Poster:

9,637 posts

178 months

Sunday 20th July 2014
quotequote all
For the last time this was not a heat related failure chaps, I know it looks like it is but the lead was nowhere near enough to the exhaust manifold to suffer scorching from radiant heat.

I've used Magnecores when I ran the dizzy & single canister coil on petrol and they worked perfectly even without the protection of the extenders. I've witnessed these leads survive laying directly on the manifold without even the slightest scortch mark, the silicone they're made from is indeed incredibly resistant to heat.

When I went LPG I decided to go back to extenders on the rear cylinder plugs, the other six just have the DEI Titanium socks. The reason for the failure is the Magnecore leads just aren't up to the LPG job, the end of the longest lead being the point of greatest resistance.

LPG burns very well but it is harder to strike than petrol, this puts a massive load on the whole ignition system which in this case just found the weakest link. I have a Canems engine management system running wasted spark firing the plugs using MSD coil packs, an ignition system that's more powerful than a traditional coil & distributor.

The end of the Magnecore lead was literally blown apart and the scorching you see was the consequence of the resulting shorting out of all that high tension power, not from being scorched by the manifold.

Look closely and you'll see it's split open like a tree struck by lightening. It's twin on the other bank did the same six months ago but this time it has happened to me in deepest France so a good job I carry spares.

So for now I've got good old cheapo Commercial Ignition leads on the two rear cylinders and she's purring like an 8 cylinder kitten again ;-)

I'm very disappointed with the Magnecores, they were expensive and directly marketed as the best leads you can use when you're running LPG.

Their failure has nothing to do with proximity to the manifolds, it 100% down to them not being up to the job!

Edited by ChimpOnGas on Sunday 20th July 22:37

macdeb

8,492 posts

254 months

Sunday 20th July 2014
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Please explain [I genuinely want to learn] how an electric current travelling down a lead [any lead]would know what fuel is being used?