Oranoco

Got a chap on another forum wondering about the 2 engines and I have to be honest I don't know what the differences and compatability between them.

Thought I'd ask on here as you're all great *crawl crawl*

Physio

Isnt the ST a duratec? (i might be wrong)

OldDan

Just as fancy head as far as I'm aware.....

gingeRS

st170 has VVT i thought?

and they are both tre dull

Oranoco

I quite enjoyed razzing my mates ST170. Needs more power but once you get used to the fact it won't put you in the back seat when you stamp on the right pedal it's a cracker

Big Will_

They are VERY similar apart from the heads.

The ST uses stronger rods and pistons though.

What sort of differences do you want to know about?

Oranoco

Somebody is talking about slapping a ST170 head on an earlier 2litre Zetec block to get the 170bhp but I didn't think it would be as straight forward as that.

Big Will_

Nope - it won't be.

The VVT is what really makes the extra power, don't get me wrong, the ST head does have slightly bigger valves, stiffer springs, lairier cams and much better ports. However - you'd really need a complete ST170 engine with inlet manifold, control boxes, Black Oak ECU etc. and then swap the bottom ends over to do it.

Much bigger job than it's worth.

With headwork, cams, induction, exhaust and a map - a 2.0 Zetec can easily knock on the door of 170bhp for a whole lot let money!

Oranoco

That kind of fits in with my expectations mate. CheeRS

Wardy257

An internally standard 2.0 ZETEC can see 170 bhp, dont waste money on unneeded mods. Do it once, do it right.