Spark plugs

[s p a c e m a n]

Bumpy..

Can anyone see any reason why I can buy a meter of this to make boots out of for around £10 http://www.thermalvelocity.co.uk/Line-&-Hose-P...

But a set of boots comes in at around £40? For that money I could probably cover the entire leads all the way to the dizzy, or am I missing something obvious?

[Hoofa]

I was running br9 plugs, now swapped to a br8 loads better, might even go to a 7 but will check. The 9 were just fouling

Running on a forced induction setup

Edited by Hoofa on Tuesday 25th June 21:25

[SILICONEKID343HP]

Still running the BPR7ES ,no problems and they are third of the price of those race plugs most of you use.

[Sardonicus]

NGK plugs have a wide forgiving temp range (better than the opposition) so I am not surprised at what I am reading

[TVR Dummy]

Out of interest, what gap are plugs meant to be set at? I'm about to fit a new set to my Griff.

[ChimpOnGas]

Still running the excellent NGK BPR6EIX iridium plugs despite a few Muppets telling me they'll destroy my engine

Tens of thousands of miles later burning LPG which is known to be way more punishing on spark plugs than petrol and they're still perfect and happily no engine blow ups as some predicted

You need a very well maintained powerful ignition system to run LPG efficiently and reliably, I'm pleased to confirm BPR6EIX iridium plugs are just the ticket

Highly recommended & totally proven under the very harshest conditions for any spark plug

[Sardonicus]

ChimpOnGas said:

Still running the excellent NGK BPR6EIX iridium plugs despite a few Muppets telling me they'll destroy my engine

Tens of thousands of miles later burning LPG which is known to be way more punishing on spark plugs than petrol and they're still perfect and happily no engine blow ups as some predicted

You need a very well maintained powerful ignition system to run LPG efficiently and reliably, I'm pleased to confirm BPR6EIX iridium plugs are just the ticket

Highly recommended & totally proven under the very harshest conditions for any spark plug

Your safe Dave by quite a margin your engine would never overwhelm 6's projected tip or otherwise

[ChimpOnGas]

Sardonicus said:

ChimpOnGas said:

Still running the excellent NGK BPR6EIX iridium plugs despite a few Muppets telling me they'll destroy my engine

Tens of thousands of miles later burning LPG which is known to be way more punishing on spark plugs than petrol and they're still perfect and happily no engine blow ups as some predicted

You need a very well maintained powerful ignition system to run LPG efficiently and reliably, I'm pleased to confirm BPR6EIX iridium plugs are just the ticket

Highly recommended & totally proven under the very harshest conditions for any spark plug

Your safe Dave by quite a margin your engine would never overwhelm 6's projected tip or otherwise

Always knew they'd be fine Simon

Which is why I defended my position so vehemently at the time.

But what about when the blower comes

I figured I'll stick with iridium and just go 7's.

This is a good read

http://www.superchargersonline.com/index.php?main_...

[Sardonicus]

ChimpOnGas said:

Always knew they'd be fine Simon

Which is why I defended my position so vehemently at the time.

But what about when the blower comes

I figured I'll stick with iridium and just go 7's.

This is a good read

http://www.superchargersonline.com/index.php?main_...

7's would cope with FI on the RV8 no sweat.

[gacksen]

ChimpOnGas said:

Still running the excellent NGK BPR6EIX iridium plugs despite a few Muppets telling me they'll destroy my engine

Tens of thousands of miles later burning LPG which is known to be way more punishing on spark plugs than petrol and they're still perfect and happily no engine blow ups as some predicted

You need a very well maintained powerful ignition system to run LPG efficiently and reliably, I'm pleased to confirm BPR6EIX iridium plugs are just the ticket

Highly recommended & totally proven under the very harshest conditions for any spark plug

+1 but can´t remember if i had 6EIX or 7EIX fitted. Keep in mind AFR changed after fitting....

[ChimpOnGas]

gacksen said:

Keep in mind AFR changed after fitting....

Can you elaborate on the above statement gacksen

If you're still on the 14CUX it'll be running closed loop for 90% of the time so in effect self correcting to maintain a predetermined AFR target.

Changing the plugs would therefore have zero impact on AFR, if however you have an aftermarket engine management system like Emerald, Megasquirt, Canems ect you may well be running it on an open loop map.

In which case I'd be interested to know more about how your AFRs changed when you fitted the iridium plugs

Thanks for offering some clarity on your above statement.

Dave.

[pjac67]

Deciding which plugs to run mine on after I finish running the engine in this week.

For those who don't know (I know Dave does) I have a 5.4 with Emerald/coil pack ignition on LPG (as well as Tesco99) and I currently have the standard NGK B7ECS and was advised by NGK to change to B8ECS after run in.

Also thinking about different/bigger injectors (although car seems to be performing well?).

Thoughts appreciated please, thanks, Paul.

[ChimpOnGas]

pjac67 said:

Deciding which plugs to run mine on after I finish running the engine in this week.

For those who don't know (I know Dave does) I have a 5.4 with Emerald/coil pack ignition on LPG (as well as Tesco99) and I currently have the standard NGK B7ECS and was advised by NGK to change to B8ECS after run in.

Also thinking about different/bigger injectors (although car seems to be performing well?).

Thoughts appreciated please, thanks, Paul.

This is what I run:

http://www.camskill.co.uk/m18b0s4872p60507/NGK_SPA...

Not cheap but bullet proof on LPG.

Ok they are 6's, and I can see why you might want to go with 7's on the 5.4.

But 8's seem a bit cool to me??

Perhaps NGK assume you'll be on the track at wide open throttle all the time?

I'd get a second opinion from Rob Robertson, he's your engine builder after all.

Dave

[pjac67]

Thanks Dave - going with the 7's ( <£6 too...)after speaking to Rob and NGK Technical dept who were VERY helpful (01442281000)....

Cheers, Paul

[FlipFlopGriff]

Had BPR6ES on the Griff 430BV for a while now and they are a good creamy brown colour as opposed to the standard 7's which were always black. Mostly fast road driving, don't do a lot of bumbling around unless stuck in traffic, no track days. Got a slight misfire but I'm sure this is the extenders so i'm replacing with Moroso leads, Vulcan boots, and some silicon heat resistant tube to run about a foot up the lead before the Vulcan boot goes on. Extenders gone and see how it goes. Should arrive in the next week or so.
FFG