Hi

What spark plugs are best for a stage 3 saph 4x4 running 23 psi boost??

Cheers Matt

 

ford O71C's

 

They are some bad ones kicking about causing misfires.

 

I think at stg3 your normaly ok to run pp8's...any more boost tho and they would be a bit hot imo. Best to ask who ever did your stg3 conversion tbh.

 

agreed but at £2 per plug you can afford to change them until you get a good set, I have seen one dodgy plug out of the 20 or so that I have bough and that was totally faulty. I would guess the missfire plugs need re gapping.

 

fuck using pp8s at stage 3

 

I have some Denso ones in mine from Reyland and haven't had any missfiring probs, and apparantly they should last longer too. The downside is that they were £11.50 each!

 

listen to James he has first hand experience unfortunately I beleive

 

https://passionford.com/forum/general-car-related-discussion/244030-denso-plugs.html

 

Champion C57/59s for me

 

Had mine in for 3 years and not changed them, whats wrong with them, mine is stage 3 353bhp, looking to change them before the ring this year but also unsure what to put in

 

hot running plug, and was the probable cause of my meltdown,i used them after being incorrectly advised on plug choice.


071c is a good safe plug, but i have found they dont idle aswell as others....

im opting for iridiums this time i reckon

 

Yeah dont need any problems like that so will seek advice

 

I think mines in need of another set as the car started spluttering like fook when i dropped it off at the bodyshop on Thursday, it's done under 200 miles since my setup at MSD and the plugs all together have been in since the rebuild 1500 miles ago.
The car currently has a set of ford O71 in it are these good enough for 21psi??

 

071c are good for 600bhp....

 

I ran mine at 36psi no problems

 

Thats good enough for m, i've just bought a set off Mr Lewis.

Will the plug gap need doing on the new plugs, i'm new to the Yb engine so all the advice is widely welcome

 

Denso ik31's for me.

 

Im running stage 3 and 071 are good for me

 

0.65mm

 

Thats great i'll set them at work when they arrive, many thanks

 

IK31 0.6mm gap, will be fine on stage 3 or 1, and idle better than 071's.
tabetha

 

MUCH better idle.

 

Ok i bought some 071c's and some denso ik31's, off to the ring so dont want problems, wiil fit the ik31's and keep the others as spares, may try both to see which work the best, thanks for the advice, lee

 

Nice one m8.

 

Cheer's for all the imput guys, im gonna try a set of 071's i think, i was told to gap them at 0.8 so will cut them down to 0.6, maybe why i've been getting a missfire at full boost.

 

Just hope you got a good batch m8.