I find NGKs colder than the equivalent Champion in most applications and use them accordingly without problems.

I always retime when switching plug brands and always slightly retard for NGKs - approx 0.5 degree.

This has been successfully used on six and twelve cylinder jags and may bear no resemblance to application on an A-series

I see. well mine seem fine ... they are the second set since motor built but thats cause the first ones I fouled bad.

How I modded them... Pliers, bench grinder and thats it.

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Click here for the Turbo Conversion Thread!

yeah but what was the mod exactly? did u make them a hotter plug so to speak

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oil leak?..what oil leak..that puddle under the car is just sweat from all that horsepower

I always find it strange that there are lots and lots of threads about the right carbies, right heads, right cam, etc. that there are not many threads about the right spark plugs.
Most spark plug problems are caused by chosing the wrong plug, not the wrong brand. Ooo, I fitted Brand "X" plugs and it is running up the duff so I fitted Brand "Y" and it runs much better is most likely due to a change in heat range and not a manufacturing problem.

Here is a tip, if you are not running a standard motor, why are you running the standard heat range plug?

thats a good point, but its not always the case as 70% of the members in this thread had issues with the same NGK plugs from im guessing the same bach. however running a colder plug in a modified engine will make it run better, but if u like a plug that will last longer and its for the standard motor id go with the hotter plug but it will burn out quick then a cloder plug....BUT!!! if u are running a high octance fuel with a cold and u like to leave ur choke on when u start ur car for a lil to long then u are better off with a hotter plug

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oil leak?..what oil leak..that puddle under the car is just sweat from all that horsepower

i thought it was the other way
the hotter the engine the colder the plug?
doesnt the cooper S run a colder plug?

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Starlet Conversion:
http://www.ausmini.com/forums/viewtopic.php?t=15484

Cooper S came with Champion N9Y, which is the same heat range and elcetrode nose type as the NGK BP6ES.
This is the recommended plug for most Minis, although lesser Minis in the past came fitted with Champion N5.
Bosch and others (including GR) recommend going 1 heat range hotter in the plugs than the old recommendations when running unleaded fuel in a traffic situation.
This means Champion N11Y, NGK BP5ES, or Bosch W8DC.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

i've changed my plugs recently to the ngk ones also and my engine has not been running too well either.. i may have just set the gaps wrong, but what gaps am i meant to set them for a standard 998? goin by my gregory's book the gap is a lot smaller than the old ones were when removed

Standard plug gap is around .024"-.025" with stock ignition.
Those of us with Nissan Pulsar dizzys in can use .032" or more.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

They do have a tendency to wear out.
I always set mine at 25 thou.

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1967 Cooper S - new front bearings to do.
1965 Cooper S shell - Slow progress. No time or money!
1966 Deluxe- next rustoration!
Mk 2 & XJ6 Jags. Less said the better.

This was interesting.........................
http://www.calverst.com/ArticleFM.htm

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'98 Mpi Sportspack + 7 port alloy head

yep , the plugs in my purple mini died like taht

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-jamie-
1963morris 850
1965 solid side van
1994 rover racecar

We have a policy n our property... that is... ONLY BOSCH...

Ive had a million problems with my racing car dropping a cylinder, and chainsaws not starting, lawn mowers starting up, then cutting out.... outboards.. NGK are banned!

Ive got a Clevo running gas.... took it to a mechanic to get him to tune the gas... and trying to be funny, he took out the boschs and through them out in the paddock after 60,000Km saying they wer crap... after 20 mins of mucking around on hands n knees trying to find them.. we finally got the engine running after only 5 out of 8 of the BRAND NEW NGK plugs would work... and had a stupid amount of resistance.... never again... Soon as i buy sumthing new... i ditch the plug, and fit a bosch.

NGK's make great sinkers... and good for filling the hole when painting engine blocks tho!


-Cam

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IS NOW BACK ONLINE AFTER SOMETIME..... SORRY TO ALL, FOR NOT REPLYING TO PM'S!!

Hi everyone, I had the same problem...
About 3 weeks ago my car started playing up on the freeway and I managed to crawl home (probably on 3 cylinders). But then that night it was fine.
Last week I drove it about 100ks without any notable problem.
The next day the spark plug failed completely, the car had zero power, and it had to be pushed off the highway.
Turns out, my Dad had bought some brand new NGK spark plugs and fitted them to my car about a month ago.
Would have been lucky to have got 500 ks out of them.

After a quick search, found another australian website with people complaining about NGK spark plugs (link below). Definately seems like a bad batch... But still, until I come across a bad batch of Bosch plugs, I wont be touching NGK's!

http://www.ausfish.com.au/vforum/archiv ... 07699.html

Jonesy

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Michael Jones
Minis In The Gong
[email protected]
www.minisinthegong.com.au