jyguad

Hello

My car is a Ford Sierra Cosworth 2WD stage 3 (24psi of boost)

For the moment, I use Bosch f3cs spark plugs.

I will want to replace them by denso ik27

Do you think that it is a good idea?

thanks
JY

Jay,

iTrader: (4)

there a few lads on here that use them with good results but personly i use o71c's from ford finis code 1120834 there about a tenner and spot on for your car

KSA-Cossie

iTrader: (4)

071's are good plugs.

jyguad

nobody else?

Twellsie

iTrader: (1)

i run densos on mine, no probs, although they are very cold plugs apparently?

jyguad

what is your denso model?
what is your car?

snow*

So you seem to want to run Denso's really badly....

Most people on here with modified Cosworths will be running 071s.
There's a tonne of threads in this forum if you do a search on spark plugs.

Ford 071's Motorcraft spark plugs
Finis code 1120834 AGPS 071C

cossiedavedec7d

mine is stage 3 and i run denso plugs, bit expensive but do the job

Daxcossie

Ive got IK31's.

costina

iTrader: (1)

i run PP8's with no probs but going to change to NGK R1's soon

Twellsie

iTrader: (1)

IK27's

Saff 4x4 running NMS Gunship+ conversion

Daxcossie

Whats the difference between IK31's and IK27's ?

Twellsie

iTrader: (1)

well actually i am not sure what state of tune you would call it, just looked on the NMS website and its stage 3

Twellsie

iTrader: (1)

about 4 if my calculations are correct

melzieann

I run 071c's good plugs but need re gaping every 2-3000mls and only last bout 5-6000mls imo

rapidcossie

i run ik27s in my car with no probs..just changed them after 7k miles...

nothing wrong with old ones but did it as part of a service...

good plugs..

BMEP

The IK27’s are the equivalent heat range of a 9 in the NGK range and the IK31 is a heat range of 10 in NGK.

I use the IK27’s on the street and IK31’s on the strip/track.

jyguad

Normally, the other interest of denso iridium is to have a very long life.
The guys who use the IK27 have which level of tuning?

jyguad

There is a lot of model!
Which spark plug is really the best for a "normal" use and some big boost (24psi) some times?
Iridium (Denso, NGK) one have very long life?
Pp8 too?

Matt Lewis

iTrader: (2)

Use 071s

Matt

DAN P

iTrader: (1)

as above 071s

Lo@der

iTrader: (8)

071's are nice and cheap to, only they made my 4x4saff run like shit when I gave it stick.
I like the champion QC59C's, race plug so they make the car hunt a bit on idle when cold though.

Mike1

What gap do people set them at for 071s?

Lo@der

iTrader: (8)

For a std car- 0.85-1.0mm
For more boost(depending, less gap if running more boost)- 0.85-0.65mm.

Watch out on the 071's though because they are offset, you have to gap them at about a 45degree angle.

B11GNS

Denso IK31's

jyguad

for peoples which have DENSO, how much miles can I hope with ?

which model you have and what boost?

for 071 spark plugs, is it standard plugs or platinum?

and what aboot PP8 for 24psi?

2wd

I also run 071 plugs...but they seem to misfire now and then when on full boost (I run a stage 3 with 23psi boost and I have gabbed them at 0,65 mm).... so I'm trying to figure out what to do...new gab or new plug ..????

JanDK

iTrader: (3)

Hi Tom.. I am having the same problem Tom.. not funny!! I would sell the car

Back to the topic:

Where do you buy you DENSO´s???

2wd

Maybe I will...

cosie_sf

Are motocraft's AGPS 092C1 good for 2WD standard (next year stage 1) cosworth? My friend has bought this sparg plug by ford and they say that's for cosie