What spark plugs are people running in their silvertop Zetec turbos
Off for more boost next month, currently running st170 plugs I think
Any recommendations... Going from 12psi towards 20psi
So just gonna service it so it's ready, and upgrade plugs if needed

 

Focus rs is what I use mate. Should do the job at that boost.

Chris

 

Worth putting a uprated version in or stick with standard?

 

I went with standard ones mate, got lucky and found genuine Ford ones on ebay at a good price.

A mate had a focus rs and put ngk in it when he serviced it and it was fine on them running high boost.

Chris

 

Picked up genuine plugs from Ford today cheers