Cheers Andy & Rob
I did have a wee read of the Burton Pinto tuning guide & to be honest, it kinda lost me by the time I got part way through it.
Yes, you are both definitely right about the cost of tuning parts, one money pit I don't really want to go to.
Don't mind paying out for another Cam if I am going to gain a worthwhile power increase.
You have me thinking Rob, I have a set of Suzuki GXR600 carbs here, didn't know that it might be possible to use them & keep the existing Pinto sparks.
I have a Megajolt unit here but don't want the hassle of rigging it all up at this moment in time.
As you say, there far far better engine options available.
Heck, the spare 1.8 115 ps Zetec engine I have here would give the Sierra a bit of a boost ( Just don't have the energy to do the conversion at the moment )
Thanks for the input chaps.