Spark plug choice.

[gonzodave]

As per title really, want to give the fd a service but not sure what plugs to use. Car is pretty stock maybe upto 300bhp, also anything else ignition wise worth changing or upgrading,
Thanks Dave.

[Lacey]

I\'d probably use NGK9\'s on the leading and NGK10\'s on the trailing

[neil_jdmr]

NGK9eqp all round,

[AtomicRex]

If you need some, I have 9\'s in the platiniums and 9/10/11 in iridium.
 
Drop me an email for more info

[Grant Monkhouse]

Maybe a new set of ignition leads?

And if you have got the cash and can find one an hks twin power, and harness adapter, which gives you a better stronger spark.

[jackaleks]

i\'ve been using bur9eq all round for about the same power level as you with no problems. i wouldn\'t go to 10s, they may be too cold.

[gonzodave]

What make leads are good or should I stick with stock Mazda set ?

[gonzodave]

Also will keep eyes open for hks twin power. Also where\'s best place to buy a bosch 044 pump ?

[Grant Monkhouse]

I got my Bosch 044 pump, magnecor leads and twin power from http://www.mazdarotaryparts.com/ speak to Clive or Lisa and they will sort you out. They may even have a twin power on the shelf if you are lucky or I\'m sure Clive will be more than welcome to help source one for you.

[SiH]

9\'s are fine for 300. Also, you won\'t need a twin power - stock ignition is perfect at that level. If you get ignition misfires, then getting a Twin Power is addressing the symptoms, not the cause, which will either be leads or coil packs (or plugs, if you haven\'t changed them). Stock ignition (including leads and packs) was fine at 340 on mine. 360 needed 10\'s and 11\'s, but coils and leads were still fine.
For leads it appears genuine Mazda, NGK, or Magnecor are some of the best bets.
Do that, and do the cheap 12v rewire, and you\'re good to go. Twin Power is belt and braces/over engineering imho.
I would have got Mazda leads to replace mine, but Magnecors were cheaper.

[Grant Monkhouse]

I agree with sih, but I was just stating an option for ignition upgrade which he was did ask for options.

A change of fuel filter may be a wise step too if it hasn\'t been done?

[gonzodave]

excellent guys thanks for all the info,will hold fire on the hks twin power for nowas they quite expensive and not a real must have. Will look for some new leads and plugs will compare prices, also i changed fuel filter about 18months ago but only done 3-4k miles so guess that should be ok for now.

[gonzodave]

checked out mazda rotary parts, ngk 9\'s £33 + vat magnecor leads £50 + vat seems pretty good to me, last service i did i used mazda dexelia 5w30 oil is that a good choice if so will order some more.

[StreetracerHCI]

good Gonzo
For me I prefer to use RoyalPurple 10w40 but oils, many people have different opinions :Yawn
I also use NGK 9 in Lead and TRAIL. I think it is the right choice for my actual upgrade :yes

[gonzodave]

Have ordered the ngk 9\'s and set of magnecors from mazda rotary parts £108 all in.
Not heard of royal purple before....... anybody else had dealings with it ? Whats the oil like on mrp, prolong or something £45 including oil filter....