Mazda Rotary Club

General => General Technical => Topic started by: Jono FD3 on September 08, 2008, 10:03:20 PM

Title: Iridium plugs??
Post by: Jono FD3 on September 08, 2008, 10:03:20 PM
Guys, what NGK iridium plugs would you recomend for the FD??

Spec:
HKS down pipe
RMagic Decat
5Zigen cat back
Custom stainless intake pipes
K&N filter (with cold feed)
Massive blits FM intercooler (set in Vmount position)
Greddy intake elbow
Walbro 255 pump
Double throttle removed
0.9 bar boost on stock sequential twins (going to be custom before too long ;) )
Std injectors @ the mo (going to be putting a second set of secondries in so 6 injectors in total)
Apexi PFC all mapped up.


Any sujestions as I can get them through work at a good price ;)

Cheers
Jono
Title: Ngk!
Post by: DMDRIFTING on September 10, 2008, 11:29:29 PM
Just been trying to purchase some NGK BUR10EQP plugs for the trailing side!

Apparently NGK do not do these anymore?


I would recommend a 10 rated plug in the trailing side and the NGK BUR9EQP in the leading! More so if your attending track and quarter mile events
Title: Iridium plugs??
Post by: joshrulz on October 18, 2008, 12:14:52 PM
do NOT use iridiums. they have welded electrodes which will break off in a rotary engine alot easier than in a piston motor.
the bur plugs are fine as are the egv plugs, egvs abit better for a hotted up motor.
Title: Iridium plugs??
Post by: AtomicRex on October 21, 2008, 12:33:29 PM
That is only the Denso plugs
 
The NGK plugs are fine!
 
Ive run them in my engines without fail and a lot harder than most would.
Title: Iridium plugs??
Post by: Silverstone Autosport on October 21, 2008, 02:24:23 PM
Hi, its Ben from lindopmotorsport we recomend using 9eqp\'s on std rebuilds and race plugs in modified engine\'s, we can supply both if needed, nice and cheap. Race plugs are £24 each, std plugs are £8.27 each. Give us a call if you need them and i can get them posted out to you.
Title: Iridium plugs??
Post by: BlitzBoy on October 21, 2008, 02:35:58 PM
Quote from: Jono FD3;533728Guys, what NGK iridium plugs would you recomend for the FD??

Spec:
HKS down pipe
RMagic Decat
5Zigen cat back
Custom stainless intake pipes
K&N filter (with cold feed)
Massive blits FM intercooler (set in Vmount position)
Greddy intake elbow
Walbro 255 pump
Double throttle removed
0.9 bar boost on stock sequential twins (going to be custom before too long ;) )
Std injectors @ the mo (going to be putting a second set of secondries in so 6 injectors in total)
Apexi PFC all mapped up.


Any sujestions as I can get them through work at a good price ;)

Cheers
Jono

go 10s all round on your mods , NGK7420s
Title: Iridium plugs??
Post by: Jono FD3 on October 21, 2008, 09:37:40 PM
Cheers mark..... will be looking at these for when the new engine is built (after run in) any news on John G\'s arrival in to the country??

Jono
Title: Iridium plugs??
Post by: AtomicRex on October 23, 2008, 11:50:23 AM
http://www.mazdarotaryclub.com/forums/showthread.php?t=53025
 
Now got a full range of these plugs in stock...ready for shipment :)
Title: Iridium plugs??
Post by: ftorex on October 23, 2008, 03:11:15 PM
Why not use B10EGV\'s they are just as good as the R6725 and are only a fraction of the price.....

:flamed
Title: Iridium plugs??
Post by: rx7_bhp500 on October 23, 2008, 03:19:52 PM
yip, thats what i heard too -the centre pin blown to kingdom come...
Title: Iridium plugs??
Post by: BlitzBoy on October 23, 2008, 03:20:41 PM
Remember if you intend to use B10EGVs you have to file down the spark plug socket to get them in on a FD
Title: Iridium plugs??
Post by: BlitzBoy on October 23, 2008, 03:22:26 PM
Quote from: rx7_bhp500;547076yip, thats what i heard too -the centre pin blown to kingdom come...

never seen NGK R740s or R725s do that been using them for years as many other high powered Rotaries.

Hearing and seeing are two different things
Title: Iridium plugs??
Post by: ftorex on October 23, 2008, 03:32:54 PM
QuoteRemember if you intend to use B10EGVs you have to file down the spark plug socket to get them in on a FD

Sure, but a small price to pay for a plug that will do the same job for way less money....:Laugh
Title: Iridium plugs??
Post by: BlitzBoy on October 23, 2008, 03:36:00 PM
true but they dont last as long as they are not iridiums I believe so swings on roundabouts really, both work
Title: Iridium plugs??
Post by: AtomicRex on October 23, 2008, 03:40:21 PM
The R plug gives a much cleaner burn, and will last longer.
 
I think it is a case of what suits the application...
Title: Iridium plugs??
Post by: rx7_bhp500 on October 25, 2008, 12:02:14 AM
Quote from: BlitzBoy;547079never seen NGK R740s or R725s do that been using them for years as many other high powered Rotaries.

Hearing and seeing are two different things

If I happen to meet more owners using the iridium plugs and reliably then I might have a different point of view.
Title: Iridium plugs??
Post by: rx7_bhp500 on October 25, 2008, 12:16:00 AM
Quote from: BlitzBoy;547079never seen NGK R740s or R725s do that been using them for years as many other high powered Rotaries.

Hearing and seeing are two different things

taken from the kiwi rotary forum :
"***WARNING DON\'T USE THE \'NEW\' EIX RANGE OF IRIDIUM PLUGS or ANY PLATINUM PLUGS***
They use a friction weld to hold the Iridium/ PLATINUM tip in place, this can fail in turbo engines with catastrophic results....."

- its just what I heard...
:Talking1
Title: Iridium plugs??
Post by: BlitzBoy on October 25, 2008, 12:55:30 AM
whats new EIX range and NGK 742s (these have been around for donky years)got to do with each other?, these plugs get used by RE-A , Feed, HKS in Japan, etc etc anyway cant be bothered to argue the toss , use what every you want Dude , I will carry on using my NGKs quite happly
Title: Iridium plugs??
Post by: BlitzBoy on October 25, 2008, 01:16:45 AM
Right just had a look on that post on kIWI Forum, they are talking about a diiferent range of plugs EIX are the "R7" series!
EIX are designed just for piston engines hell you can even buy these in Halfords, so please mate stop spreading misinformation on this forum over two different types of plugs.

R742 v EIX plugs NOT the same plug.
R742s were designed for rotary turbo engines and their high heat hence the"R" bit in the model number
Title: Iridium plugs??
Post by: BlitzBoy on October 25, 2008, 01:28:04 AM
and here is a pictures showing the difference between the EIX v the NGK/HKS

EIX on the left, NGK/HKS on the right

as you can see twoo totally different plugs, plus if you want to use EIX you would have to use a modified plug socket to fit them
Title: Iridium plugs??
Post by: rx7_bhp500 on October 28, 2008, 01:46:45 PM
no idea.....
stop by boots and ask for some chill pills...
Title: Iridium plugs??
Post by: BlitzBoy on October 28, 2008, 02:06:08 PM
yes I know you have no idea :rollin
Title: Iridium plugs??
Post by: rx7_bhp500 on October 28, 2008, 02:31:38 PM
haha

:Snoring
Title: Iridium plugs??
Post by: BlitzBoy on October 28, 2008, 03:20:54 PM
you are the best I luv you
Title: Iridium plugs??
Post by: chrisJDM on October 28, 2008, 04:00:35 PM
ive been using the B9EGV plugs in mine for about 2 years now since its been modded with good results and no problems and they only cost £32 a set, gonna be going up to B10EGV now ive gone single turbo.  Theres a few guys who live near me who have been running single turbo FD\'s for quite a while and they recommended the B9EGV plugs to me.  As said above you have to modify the socket to get them in :Thumbsup!
Title: Iridium plugs??
Post by: BlitzBoy on October 28, 2008, 04:02:26 PM
do they do an 11 heat range Chris?
Title: Iridium plugs??
Post by: Laeeq on October 28, 2008, 04:04:49 PM
Quote from: sweetiewells;548873ive been using the B9EGV plugs in mine for about 2 years now since its been modded with good results and no problems and they only cost £32 a set, gonna be going up to B10EGV now ive gone single turbo.  as said above you have to modify the socket to get them in :Thumbsup!

yep, same here:Thumbsup! 9\'s all round for me with no issues and in this cold weather they perform better.  In the summer its 9\'s and 10\'s
Title: Iridium plugs??
Post by: chrisJDM on October 28, 2008, 04:06:31 PM
im not sure i always get them from here //www.spark-plugs.co.uk so will take a look
Title: Iridium plugs??
Post by: chrisJDM on October 28, 2008, 04:08:26 PM
ok just checked and they do, if you type in b11egv in the part search on the left it will find them.  Â£6.79 a plug :Thumbs-up
Title: Iridium plugs??
Post by: BlitzBoy on October 28, 2008, 04:11:58 PM
nice, as the yen is screwed at the mo, maybe a good alternative for me to use those for the time being and save my 742s for the drag work
Title: Iridium plugs??
Post by: Laeeq on October 28, 2008, 04:12:17 PM
try this http://www.sparkplugs.co.uk/pages/pricing/applications/NGK-race-plugs.as
Title: Iridium plugs??
Post by: Laeeq on October 28, 2008, 04:13:45 PM
ooops seems we were typing at the same time...:) well thats where i get mine from too less the half the price:evillaugh
Title: Iridium plugs??
Post by: chrisJDM on October 28, 2008, 04:19:07 PM
great minds think alike hehe
Title: Iridium plugs??
Post by: BlitzBoy on October 28, 2008, 04:22:22 PM
Time to buy a socket and grind it I think
Title: Iridium plugs??
Post by: Laeeq on October 28, 2008, 04:24:12 PM
Quote from: BlitzBoy;548891Time to buy a socket and grind it I think

yes, but take your time...you dont want it too thin:eek:
Title: Iridium plugs??
Post by: BlitzBoy on October 28, 2008, 04:25:37 PM
what did you use to grind it?
Title: Iridium plugs??
Post by: Laeeq on October 28, 2008, 04:26:53 PM
Quote from: BlitzBoy;548895what did you use to grind it?

grinder...:Thumbsup!
Title: Iridium plugs??
Post by: BlitzBoy on October 28, 2008, 04:28:36 PM
lol haha I might get Geff or Chris Saturday to do me one
Title: Iridium plugs??
Post by: FD3UK on October 28, 2008, 05:14:22 PM
I run EGV\'s in mine and still will, but had one fail on ceramic insulator recently. Not sure why as engine was stone cold and drove home fine the night before.

remember they are a race plug and need changing regularly.
Title: Iridium plugs??
Post by: chrisJDM on October 28, 2008, 05:17:08 PM
a guy at a local garage used the socket that comes in the tool kit in the boot of the FD, has quite thin walls anyway, grinded it out to make it a little thinner and also welded in a piece in the end so i could attach a ratchet :Thumbsup!
Title: Iridium plugs??
Post by: rx7_bhp500 on October 29, 2008, 01:12:10 PM
How often / need changing ? -what do you recom ...miles ?

Thanks
Title: Iridium plugs??
Post by: Hayward North on December 08, 2008, 08:52:12 PM
Quote from: FD3UK;548914I run EGV\'s in mine and still will, but had one fail on ceramic insulator recently. Not sure why as engine was stone cold and drove home fine the night before.

remember they are a race plug and need changing regularly.

Wouldnt want that little bit of ceramic in my engine :Nono!
Title: Iridium plugs??
Post by: Kash_ on December 08, 2008, 11:01:07 PM
Quote from: FD3UK;548914I run EGV\'s in mine and still will, but had one fail on ceramic insulator recently. Not sure why as engine was stone cold and drove home fine the night before.

remember they are a race plug and need changing regularly.

What do you think would cause the insulator to break apart? could it be the cold weather (air temps) as I\'ve just noticed this happen to one of my HKS Iridium plugs, symptoms were slight misfire on idle and plugs seemed to be getting fouled quickly on idle.... luckily no damage but I wont be using these again for sure :Grrr
Title: Iridium plugs??
Post by: BlitzBoy on December 09, 2008, 09:01:43 AM
If you are using EGVs with a HKS TwinPower there is a risk of damaging the Twinpower due to the EGVs being the non resistor type
Title: Iridium plugs??
Post by: Kash_ on December 09, 2008, 10:08:20 AM
Mark what about the HKS Irridium plugs? They say NGK on the side but branded HKS... I take it the NGK racing plugs will be okay with the Twinpower?
Title: Iridium plugs??
Post by: BlitzBoy on December 09, 2008, 10:16:36 AM
Yes all the Iridium plugs are fine as they are the resistor type.
Title: Iridium plugs??
Post by: Kash_ on December 09, 2008, 10:19:46 AM
This is what happened to mine :confused:
Title: Iridium plugs??
Post by: BlitzBoy on December 09, 2008, 10:22:58 AM
You should have seen my normal 9s from a few years ago there was nothing left at the top lol
Title: Iridium plugs??
Post by: Laeeq on December 09, 2008, 10:23:52 AM
are you sure its broken? as its hard to tell in that picture.  It looks more like the heat has melted it?....may be wrong:2eek
Title: Iridium plugs??
Post by: Kash_ on December 09, 2008, 10:47:33 AM
Quote from: Laeeq;563697are you sure its broken? as its hard to tell in that picture.  It looks more like the heat has melted it?....may be wrong:2eek

yeah the middle insulator is broken in half :eek:
Title: Iridium plugs??
Post by: rx7_bhp500 on December 12, 2008, 10:19:04 PM
Quote from: BlitzBoy;548807yes I know you have no idea :rollin


are you always this unfriendly / obnoxious or is it just this forum ?

Its obviously a pointless exercise reasoning with you on this topic.
Title: Iridium plugs??
Post by: BlitzBoy on December 12, 2008, 10:33:31 PM
Quote from: rx7_bhp500;564851are you always this unfriendly / obnoxious or is it just this forum ?

Its obviously a pointless exercise reasoning with you on this topic.

zzzz what ever dude Just trying to give out correct info on spark plugs, but it seems you just want a internet argument seeing as you quoted an old post I made two months ago
Title: Iridium plugs??
Post by: clive on December 13, 2008, 11:02:50 AM
I see from above that we seem to have a problem that potentially could get out of hand,

As this would now seem to be a result of a "problem" that has festered over the last two months can I ask that this now personal problem is taken away from this thread and this club please.

If you are unable to sort this out away from the club can I ask that you do not directly post "at each other" on any future threads,

Please note ALL of the moderators reviewed this thread some two months ago after a reported post and saw fit to take no action.

Thanks guys,