Spark Plugs - Wow, what a difference!

[wozzlegummich]

Just threw at set of spark plugs at the Rangovery (Classic RR with DII mechanicals - Thor) and I can't believe the difference. It had platinum NGK's in it which I replaced with DENSO IK20 Iridium.

It runs injected gas (LPG) and had started to pop (backfire) when lugging at low engine RPM.

It not only now pulls smoothly away from idle in 1st but has appreciably more power throughout the rev range. Can't wait to check the fuel consumption.

I've owned many rover V8's over the years but have never had this sort of gain in performance from just a spark plug change!! The old ones didn't even look that bad.

I guess the power had dwindled away over time and i just hadn't noticed it.

[bee utey]

Yup, 90% of gas running problems are fixed by fitting suitable spark plugs. Keeps me in business.

[Pedro_The_Swift]

Where from and how much Wozzle?

[wozzlegummich]

Fleabay - DENSO IRIDIUM POWER Spark Plug IK20 x 4 RACING PLUG | eBay

$140 for 8 inc postage.

Hurts me paying that much for spark plugs!!!!

[Pedro_The_Swift]

at the risk of starting WW3
around $60 plus freight from USA

[wozzlegummich]

at the risk of starting WW3
around $60 plus freight from USA

Yeah, I saw them but I am going on the Tour T'Adelaide rally this weekend and needed them quickly. Only 2 days from Brisbane to Melb.

It's the price I pay for not planning ahead!! At least the $$$ stayed in OZ.

[Pedro_The_Swift]

looks like fun,,
its good to see all maps read north at the top


oh and remember!!!

[wozzlegummich]

I'm on the dark side of participants (an Official).

Unfortunately we have to remind competitors that north is at the top of the map. Even the experienced navigators sometimes get geographically embarrassed.

[Cannon]

what did you set the gap to?

[wozzlegummich]

Funny you mention that. After doing research on what the gap should be when running on gas I was totally confused.

Some used to say the gap should be opened up for gas but current thinking is to close them up from standard. There are a heap of "experts" out there on the web but no one could give me a valid technical reason as to their recommendation.

I believe factory Landrover for petrol is 1.1MM .043".

The plugs came pre-gapped at .040" or 1.0MM so I left them at that. Seems to have worked OK now but I'll have to see how I go.