Just wondering what your thoughts are camshaft timing on turbo engines.
Do you run less overlap to stop boost escaping down the exhaust or more to flush out spent gases ???
Engine is a zetec st170 with standard cams vvt removed and adjustable pulleys fitted

 

usualy run less overlap, or you just blow the boost straight back out the exhaust valve

 

Why have you removed the VVT, when set up correctly this can give awsome power/torque and MPG, correctly set some have seen 30% reduction in constant cruise consumption.
tabetha

 

ive heard not many can map turbo ones with it on tho? could be wrong of course

 

removed it cause ecu i have(omex 600) cant run it properly as its not just an on off switch its constantly adjusting that and had it on carbs before so couldn't jet it with it working

 

I thought the 600 could run it, maybe its the 710 i'm thinking of that can deffo run it ok. it's well worth having though!

Re cam timing - the way i'd do it is set it up on a RR with as little boost as possible and find what setting makes the best peak power, how else would you know what's benefiting the engine and what's losing you power?

 

Can be mapped to perfection on turbo, certainly on emerald ecu's that has proper control of all the VVC type set ups.
tabetha

 

Thanks for that ya having it set up on rr just wanted an idea of roughly which way im going and ya 600 has cam driver but it only on off switch like a vtec engine can be used for cruising alright