1ggte spark plug advice

[amon]

I have a set of plugs that i would like to run in my RA28/1G.They are NGK V Power R5671A-8.
It normally runs BCPR6ES so i am led to believe these would be 2 heat ranges cooler plug.
Now the only mods to this Gen 3 1G is a KKR330 single,a walbro pump,sard EFI rising rate reg,cold air induction and im running 12 psi on stock a computer
Also its worth noting that i live in Darwin and its very humid,so air density is not to thick.

Does anyone have any experience with these plugs and or comments[Qualified] on what im about to do.

Cheers in advance

Guy

[TheToyman75]

Amon,

That is not a NGK plug name I am familiar with.

In your climate Iwould suggest running an NGK BCPR7ES as your cheaper plug option. An Iriway 7 (also by NGK) would be your best option.

I use the bosch equivilent as they are a cheaper option. IK22 from memory but check the crossover chart.

[amon]

Hey Rod, I spoke to a chap up here about the subject and he said these plugs are the medium for engines mildly tuned Force inducted , also that because i chose a cooler plug it should not pose too greater risk to the engine.
Perhaps run too rich or have simply retarded performance.

He also said 2 heat ranges might be also too much and agreed the BCPR7ES Might be better bang for buck as well.I got the V Powers for $5 each anyways and are going to give them a go,do plug checks for the obvious and check pistons and valve seats etc with my new toy the Snapon Optic Fibre lens.Maybe even Email NGK to see what they reckon.

They are not a resistor plug, i cant find too much info that it is a big problem.

I found a bit more info that reflected pretty much what i had been told.

We,ll see. Thank you for your info

Cheers Guy