jumpinthemiddle

Can any1 give advice?
I have a st170 but ive been told that the vvt is goin to be a problem if i set up R1 individual throttle bodies and Omex Managment.

I can either have 1 of the following 2 set-ups:

2.0 Zetec port/polished head
Kent Cams
OBX Timing pullies
R1 Throttle bodies
Bosch 701 beige injectors
Power boost valve
OMEX Managment

ST170 port/polished head
Standard st170 cams with vvt
OBX Timing pulley on exhaust cam
R1 Throttle bodies
St170 injectors and fuel rail
OMEX Mangment

Which is the better set-up?

I think the zetec setup will be around 200 bhp and the st170 setup will be around 230 bhp but im not sure about vvt and if it will run on omex?

Any advice will help

wide ka

vvt will run on omex, but not aswell as the ford way, i belive it work as on or off if that makes sence, so say at 4k it will adjust the timeing in one big lump, thats how im led to belive it works, may be wrong though

tabetha

The reason why the VVT will feel like just a on or off situtation is because it is just that, either on or off, it has no inbetween.
So long as mamagement runs VVT then you can have it where you like.
Would be sheer stupidity not to have it, as the fuel savings are enormous on part throttle openings, as some RR operators do actually do experiments to satisfy their own curiosity about things and one has done a little research into this.
There was a recent article in PPC magazine about this very subject, not in depth but a good info bit under Walkers Workshop, and also a thread on here recently.
Any decent management if so equipped would be able to control this as all it needs is a feed for on or off.
tabetha

jumpinthemiddle

So am i better off sticking with the ST170 head with VVT than changing over to 2.0 zetec?

If i set-up omex managment to suit vvt should it be 'always on' or 'always off'.

Many thanks

tabetha

If you want the best of mpg and the best power VVT it is then.
I would set it to come on at a certain rpm if I were you, ie higher up vvt on for power off lower down for cruising and mpg/emissions.
I have no experience with the omex, so don't know how adjustable it can be made on this ecu, but on others such as emerald it works extremely well, so so long as it has the feature should work fine.
tabetha

jumpinthemiddle

Thanks