Ive just been given a set of Champion QC57C ST spark plugs.

Can i use these in my stage 1 Cossie ok?

Cheers,


Mark

 

yes you can, be prepared for a potentially rough idle though, not bad, and not misfiring, but uneven. Otherwise they will be fine.

 

Cheers Rich.

Would the 59's of been better?

 

the motorcraft o71C's would be even better

 

I cant get them m8, I can only seem to get the 701's from Ford and im not convinced that theyre the same?

 

Yep, essentially the same part, and will be better than C57's in as much as you will get a nice clean idle.

 

the finis for them is :

1120834

 

701 are not made any more they go to the 071s did they look on osi list.get them to look when u next go into ford

 

stage 1 you should run c59 as c57 are for over the 400bhp bracket!


c59 in my saff WITHOUT any problems on idle,and run c57 in my 3dr again without any problems on idle

 

701 is the daddy plug...well before the 601 was deleted....The 071 is a very good plug upto 400bhp (dont last particualary long though!)....I have personally tested them on my new engine and i have a little too much power for them Now on the Daddy of plugs in the BIG BHP sector the Denso Iridium!

To your question the Champion will be fine BUT i personally found them very short lived in my engines i tried them in!

 

the 071 or the same mate its the fin code thats changed i think ther a good cheap plug when new but dont seem to last very long

andy

 

I hate then!!!! Stayed in my car for a week until i binned them. Rough idle and car was generally running shit. Was down to these plugs.

Go Denso!

 

phil, i've heard a lot of bad things about the denso iridiums. that theyre not built well and havea habitof falling apart, dropping tips etc. for no good reason.

this may be rumour, or it may be a design flaw thats been fixed tho...

 

right........ I'll go with the 701's then!!

 

the 701 isnt available anymore though,,, it now the 071C ,,,

change them when u change your oil&filter, only a couple of quid each

 

But i rung my local Ford dealer today and they said they can only get 701's plus i have a set i bought from then a few months ago!!?

 

Mark, Champions are fine IMO (we use them), but it is your choice, and yes they may be a bit rough at idle (like a popping noise)

 

If you decide the 071's I think Mike Rainbird can get hold of them mate

 

Cheers for the advice guys.

 

Jim...Rod runs them and Karl recommends them....do you know better?Seriously i dont want these in my car if you do

 

it was on the won forums about a year ago, lots of failures of densos and no good explination for it.

maybe a bad batch?

 

...cheers Jim looks like 50 quid has just gone down the drain They are in the bin tommorrow...wont risk it...TBH when you get them they are 0.8mm set and you are not meant to change that...i was told to put to 0.6mm as you would on a YB...and i must admit i over done it slightly and was shocked at how easy the top moved back up I did think are these goin to fall off.

 

send them to me

i'll be running denso's when i'm run in

 

Denso Iridium!

Phil I had them in mine b4(6 yrs back) and was so lucky cos when the tip fell off it took a bit of exhaust valve so WASN'T too expensive as some ie pistons/head block!

 

i dont think you can gap em phil i think that fucks em

 

I use QC57C in my Es Cos...as supplied and fitted by Karl - no problems at all (22 thou gap).

 

Cheers Doug.

And im guessing you are running roughly the same BHP as me?

 

No............I am running a special Stage 1

As Rich M said, you may fing on your car that the iidle a bit uneven, as they are a cold plug.

 

Iridiums for me. Very happy with them.

 

...i was told to gap them....as 0.8mm as set is too big.

 

So gap em then Mr Phil, gap em then.

 

I did Stu and i got them slightly lower and had to open them up a tad and was surprised at how easy it moved....