Spark plugs

[Hn.92]

Hi what spark plugs are people using on there 450bhp+ rx7?
Thanks

 

[Markr]

Bur9eqp's all round for me

 

[Nas80]

I use denso Iridium Racing Spark Plugs - IRE01-32

 

[Hn.92]

Bur9eqp's all round for me

No ignition breakup at that power?

 

[Hn.92]

I use denso Iridium Racing Spark Plugs - IRE01-32

What heat range you running?

 

[jdmr_neil]

9s or 10s if using water

 

[Markr]

No ignition breakup at that power?

Nope and on standard coils, id imagine i'm somewere between 400-450hp

 

[Nas80]

What heat range you running?

32 which I think bits 10.5.

You defo don't want 9s at them power levels.

 

[Nas80]

Ignition and fuel are vital. Spend a large amount of time in these areas especially if you are going above 450hp. Upgrade coils is a must really.

Get a fuel baffle too if you haven't already. You run dry of fuel around on a left hand corner or you have a miss fire at high boost pressure youll get detonation and it's game over.

 

[Hn.92]

Ignition and fuel are vital. Spend a large amount of time in these areas especially if you are going above 450hp. Upgrade coils is a must really.

Get a fuel baffle too if you haven't already. You run dry of fuel around on a left hand corner or you have a miss fire at high boost pressure youll get detonation and it's game over.

Thanks will keep that in mind

 

[jack.am]

These

NGK Racing Spark Plug R5671A-10 (5820)

NGK Racing Spark Plug R5671A-10 (5820)

www.sparkplugs.co.uk

You’ll need a 5/8 socket though.

 

[Spendyrx]

Ignition and fuel are vital. Spend a large amount of time in these areas especially if you are going above 450hp. Upgrade coils is a must really.

Get a fuel baffle too if you haven't already. You run dry of fuel around on a left hand corner or you have a miss fire at high boost pressure youll get detonation and it's game over.

Haha brilliant nas

 

[jdmr_neil]

I use r7420-10s at 400bhp with WI. Could probably get away with 9s but these have performed well so far.

 

[Sturneyrx7]

I use r7420-10s at 400bhp with WI. Could probably get away with 9s but these have performed well so far.

I’m using the same at 500bhp. Spot on for me, had to change from bur9eqp when I went over 450hp

 

[jdmr_neil]

I’m using the same at 500bhp. Spot on for me, had to change from bur9eqp when I went over 450hp

Do you use Wi mate?, only asking as i might buy a cheapy set of bur9s see how it runs. £100+ on plugs is a pita and i recently got replicas that fucked in 1000 miles.

 

[Sturneyrx7]

Do you use Wi mate?, only asking as i might buy a cheapy set of bur9s see how it runs. £100+ on plugs is a pita and i recently got replicas that fucked in 1000 miles.

No, I don’t run any water injection. Just 1.4 bar

 

[jdmr_neil]

No, I don’t run any water injection. Just 1.4 bar

You should!! It's awesome

 

[Tangelos]

Ignition and fuel are vital. Spend a large amount of time in these areas especially if you are going above 450hp. Upgrade coils is a must really.

Get a fuel baffle too if you haven't already. You run dry of fuel around on a left hand corner or you have a miss fire at high boost pressure youll get detonation and it's game over.

This. I’m pulling my engine for the second time this year because I was having ignition breakup while WOT and lost compression on the front rotor. Get a proper fuel/ignition setup or budget for a rebuild (even after a rebuild you’ll still need to upgrade those anyways).

 

[rob fd]

10s and 11s for me.

 

[Matt]

Spark Plug Thread

So make things a bit simpler for everyone and help first timers, I thought we could compile a list of Rotary-Friendly spark plugs, with information about their cost and downsides. Any info anyone has to add to this of their experiences please pipe up! ;) General spark plug information; Heat...

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