I have been searching the forum trying to work out what spark plugs i will need to buy. Been a little confused weather i need PFR6B-11B or different ones?

My car will has uprated internals ie eagle rods and wiseco pistons 740cc injectors, t28r tubs and MS manifolds.

Would the PFR6B-11B be ok or will i require different plugs?

Cheers,

Ant

Edited September 17, 200916 yr by Ant_300zx

your car must be quick!! One of my favourties. Love it!!

you will need colder plugs than the standard 6's try 7's or possibly 8's depending on how much boost your running

 

Mike

your car must be quick!! One of my favourties. Love it!!

 

Cheers mate, Still in the process of putting it back together, so fingers crossed it should be fairly quick :D

 

you will need colder plugs than the standard 6's try 7's or possibly 8's depending on how much boost your running

 

Mike

 

I was told i should safely be able run up to 24psi with the supporting mods i have. What would you recommend i should go with?

 

Cheers,

 

Ant

If the mods are doing their job to keep combustion chamber temperatures down you shouldn't need to go extremely cold (this would lead to fouling at idle, commuting etc). Rule of thumb is 1 grade colder for each additional 50BHP but the margins get a bit blurred when your car is capable of massive power. When turning up the boost it's just as important to use a smaller gap setting - otherwise it'll misfire under heavy load.

Better to be safe and go too cold, a set of fouled plugs is considerably cheaper to replace than your engine. Best (but expensive) options are NGK or Denso race plugs R7434-8 or IK01-24, cheaper are standard Iridium plugs, BKR8EIX or IK24, BKR9EIX or IK27 if you want to be sure your plugs are cold enough.

Good luck!

Cheers

H

Was thinking these should be good enough with a heat range 8? or should i go with 7's?

 

http://www.importpartspro.com/ngkirsppl.html

 

Cheers,

 

Ant

Yep, that's BKR7EIX, BKR8EIX and BKR9EIX, they've just missed the start off the code. Don't know if I'll get told off for posting this .........................

 

BKR8EIX looks your best option but be prepared to experiment. I'm making 350 - 400BHP and running fine on BKR7EIX.

 

Cheers

H

Edited September 17, 200916 yr by RichardS
Registered user trading

im running NGK racing 8's in mine with a peek boost of 1.6 bar.

 

they're not cheap at £150 for six but, well worth it

Yep, that's BKR7EIX, BKR8EIX and BKR9EIX, they've just missed the start off the code. Don't know if I'll get told off for posting this .........................

 

BKR8EIX looks your best option but be prepared to experiment. I'm making 350 - 400BHP and running fine on BKR7EIX.

 

Cheers

H

 

Hi Rob,

 

I had to edit your post by removing the link to your 'site and references to prices for parts etc. Unfortunately unsubscribed members are not permitted to sell on here. In addition we have traders who have paid an increased sub in order to benefit from regular selling; who also supply a similar product. Any unauthorized trading conflicts with this arrangement so is strictly forbidden.

 

If you would like to become a trader, please contact Znut - the club's TLO.

 

Richard

Looks as though i'll go for the NGK 8's then.

Thanks for your help.

Ant

im running NGK racing 8's in mine with a peek boost of 1.6 bar.

 

they're not cheap at £150 for six but, well worth it

 

Silverbullet where did you get yours from please?

 

Cheers,

 

Ant

Hi Richard, apologies, wasn't sure what the policy was but suspected as much.

I did advertise as a trader when the trader's section was first set up but because we specialise in a niche we got very little business from it unfortunately.

Hi Richard, apologies, wasn't sure what the policy was but suspected as much.

I did advertise as a trader when the trader's section was first set up but because we specialise in a niche we got very little business from it unfortunately.

 

No problem Rob - I thought you were once a trader as I remember buying from you when I bought my first Z.

 

We've tightened up the rules a bit since then....

 

Richard;)