Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: cockneyboy100 on 16 April 2008, 10:11:30

Title: which spark plugs
Post by: cockneyboy100 on 16 April 2008, 10:11:30
doing a service this weekend,  so many spark plugs, to choose from, what do you reccomend,  have heard ngk iridiums are good.

phill
  :y :y :y :y :y
Title: Re: which spark plugs
Post by: Marks DTM Calib on 16 April 2008, 10:15:42
Vx twin electrode ones.....4 electrode parts offer no advantage and can actual shield the flame front....
Title: Re: which spark plugs
Post by: cockneyboy100 on 16 April 2008, 10:17:21
have you used these plugs before.

Title: Re: which spark plugs
Post by: Marks DTM Calib on 16 April 2008, 10:25:54
Quote
have you used these plugs before.



Which?

Vx - Yes, many times

Tried and fitted many more expensive types and had no improvement (not that you would expect any) and in some cases poorer running (i.e. Bosch Super 4's)

What you have to consider is that

1) The Omega engine are pretty efficent so dont have massive cylinder temps unlike say a Turbo car

2) The engine management setup really extends the plug life through tight control of timing and mixture

If you check a set of 40K plugs and measure the elctrode gap, it will be pretty much the same as the day it was fitted!
Title: Re: which spark plugs
Post by: Andy B on 16 April 2008, 10:28:28
Quote
.....
If you check a set of 40K plugs and measure the elctrode gap, it will be pretty much the same as the day it was fitted!

 ..... and how do you check the gap on multi electrode plugs?  :-?   ;)  ;)
Title: Re: which spark plugs
Post by: cockneyboy100 on 16 April 2008, 10:29:23
thats great, cheers for your help, vx it is then

phill

 :y :y :y :y :y :y
Title: Re: which spark plugs
Post by: mkaminski100 on 16 April 2008, 11:16:12
Take GM plugs, or NGK. It is possible that BOSH is making GM spark plugs, but original BOSH just dont work as well as GM's or NGK.
Title: Re: which spark plugs
Post by: Richard A on 16 April 2008, 17:47:01
Had problems with GM plugs (misfire under load), fitted NKG Irdium plugs at 117k, speedo now at 142k ie covered 25k, checked 2 weeks ago and they still look like new, worth the money  :y
regards
richard a
Title: Re: which spark plugs
Post by: mahony on 16 April 2008, 18:20:24
i have used bosch super 4's with no problems (4 electrode) idle is actually smoother than the standard 2 electrodes i took out. :y
Title: Re: which spark plugs
Post by: Marks DTM Calib on 16 April 2008, 19:27:58
Quote
Quote
.....
If you check a set of 40K plugs and measure the elctrode gap, it will be pretty much the same as the day it was fitted!

 ..... and how do you check the gap on multi electrode plugs?  :-?   ;)  ;)


You use gauge rods....
Title: Re: which spark plugs
Post by: Marks DTM Calib on 16 April 2008, 19:30:01
Quote
i have used bosch super 4's with no problems (4 electrode) idle is actually smoother than the standard 2 electrodes i took out. :y

Hows that a comparison....ow look, these new plugs work better than these old ones....  :-?

The 4 electrode ones are not better, they only extende the service interval by which time they have often worked loose any way......on a normaly aspirated car, fancy plugs only empty your wallet.....you want good quality standard plugs, not fancy snake oil based things
Title: Re: which spark plugs
Post by: MV6Man on 16 April 2008, 21:26:30
Quote
Had problems with GM plugs (misfire under load), fitted NKG Irdium plugs at 117k, speedo now at 142k ie covered 25k, checked 2 weeks ago and they still look like new, worth the money  :y
regards
richard a

What´s the part no for those iridiums?
They are coming on 3.0 but i assume that they will work in it too
Title: Re: which spark plugs
Post by: Richard A on 17 April 2008, 20:27:23
NGK Iridium IX Part no BKR6IX, 6418.

regards
richard a
Title: Re: which spark plugs
Post by: trebor on 24 April 2008, 23:24:15
I put in the LPG versions and what a difference!  Engine smoother, more powerful and economy now at 21 (up from 18) and I changed plugs halfway through a tankful of LPG - so hoping for even better on this new tankful.

BKR6EIX-LPG
Title: Re: which spark plugs
Post by: mkaminski100 on 25 April 2008, 17:00:13
How much are these? Are they really worth it?
Title: Re: which spark plugs
Post by: Richard A on 25 April 2008, 17:50:09
I paid £6 each ie £36 total, I think worth every penny.  ;) ;)
regards
richard a
Title: Re: which spark plugs
Post by: trebor on 25 April 2008, 18:49:30
I paid £49 inc p&p for a set of 6.
Title: Re: which spark plugs
Post by: trebor on 25 April 2008, 18:51:03
Quote
I paid £49 inc p&p for a set of 6.

But these have a platinum tip on the ground electrode so will last longer - especially in LPG engines.
Title: Re: which spark plugs
Post by: cockneyboy100 on 25 April 2008, 20:28:22

have changed plugs, used the vx ones, car is running sweet, also had oil breathing system cleaned, (cheers aid) well recommended,

 :y :y :y :y :y
Title: Re: which spark plugs
Post by: philhoward on 26 April 2008, 20:20:20
Just fitted a set of boggo twin electrode NGKs rather than forking out for posh Bosch ones from Halfrauds - just hope they'll be fine on LPG (when I get it finished!), otherwise i might just try the LPG variant...