B14, B172, B19/200, D16 engine, ignition, cooling, fuel & exhaust system, gearbox, variomatic, final drive... | Tuning: engine swaps, welded diff, clutch upgrades...
NO parts requests here, please use our V3M BUY & SELL corner
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kelvingenders
- Posts: 463
- Joined: 12 Apr 2010 08:40 am
Post
by kelvingenders » 19 Jun 2013 10:04 am
Will getting iridium sark plugs make a difference?

if so how much?

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Logan360
- Posts: 849
- Joined: 23 Jun 2012 08:51 am
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by Logan360 » 19 Jun 2013 10:35 am
Oh god yes. I used to deliver pizza's running 800+km per week so i upgraded te iridium. my car always starts, idles well, good power and helped with economy. saved ten bucks a week in gas. but remember that was about 800-900on a low week. I leave it sitting and as long as it gas charged battery and gas she fires.quicker than my daily too.
Own:
86 & 89 360GLT
00 S80
01 Subaru Lancaster 6
02 Subaru GT30
95 Nissan Pulsar
Owned
Too damn many... tooo damn many...
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Chris_C
- *** V3M DONOR ***
- Posts: 9600
- Joined: 18 Jun 2004 11:53 pm
- Location: South Coast, UK
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by Chris_C » 19 Jun 2013 11:00 am
No, not a chance of it :p Any new plugs will be better than old plugs. Some plugs will last longer before they errode, but if you change them as per the Volvo service interval, it is just two plates of metal a set distance apart. Making sure all the volts get to the 2 plates is the key thing, what they are made out of will only effect how long they stay as two clean plates of metal at the same set distance.
Given how LE jet runs on 95% of cars I see, they'll all be sooted up and it'll be irrelevant within a week
Tbf, it's all personal opinion. Some people swear by them, I just can't see any reason in science to spend the extra.
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
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Logan360
- Posts: 849
- Joined: 23 Jun 2012 08:51 am
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by Logan360 » 19 Jun 2013 08:23 pm
Which is fair, i spent the extra and haven't regretted it.
Own:
86 & 89 360GLT
00 S80
01 Subaru Lancaster 6
02 Subaru GT30
95 Nissan Pulsar
Owned
Too damn many... tooo damn many...
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Ride_on
- Posts: 2265
- Joined: 26 May 2009 05:34 pm
- Location: Belfast, N. Ireland
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by Ride_on » 21 Jun 2013 09:36 pm
I've always liked the Bosch super 4, nice and revy, never had the need to change them once fitted. Tried platinum point ones in 1.4 but engine didn't like them, felt held back.
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7