Hi there as above i have got a 2.1 zvh engine just about ready to go in and was wondering whats is the most boost i can run on a set of mahle vauxhall xe pistons i've herd of figures over 20psi before ???

any thoughts on this ?

 

why would you wanna run that much when you could safely run around 12lbs of boost and have well over 200bhp

 

12 lbs ? or 12 psi ?

 

same thing in it mate psi stands for pounds per square inch or am i wrong

 

well maybe, you could be right...

i run about 12 - 13 psi, so does that mean its over 200bhp...

its the same engine as above more or less

 

I would have thought so mate im running 14lbs with a standard 1.6 bottom end and its running 186bhp

 

so simply because of the larger cubic capacity, means it will produce more power at same level of boost...

a 2.1 will produce more power at 14psi than a 1.6 at 14psi yes ?

 

Yes mate easily i know people who run 10psi with around the 220bhp mark. Good thing is you dont have to worry about your engine or turbo blowing but maybe you should worry about your gearbox

 

yes, eats standard gear boxes

 

when i was running a t34 0.63 i ran as much as 24psi but with my gt turbo i only run 19psi but thats only because i have maxed out my dark green injectors when i get my new inlet manifold i will be back upto 22psi i've got one og bernies stage two plus gearboxes a standard box wont last even with 220 bhp broken lay shaft time

 

Any pics of your car mate, sounds like a pretty good spec on it!

 

get it on a RR or summit you cant say "it can/will run X Y Z amount" yu jus set it up to what suits the engine, be it 12 or 18 psi,

 

it seems using calibra pistons 14psi is about max form what i've seen on this site over the last year or two

mark

 

i know what you mean by this as i have difficulty trying to explain this to my m8s at the end of the day all engines are different, what works well in one engine wont even graft on another.
All i normally get off them is more boost = more power .

well this is realistically what i've going to aim for for now with the std ke-management maybe less boost if the injectors cant/wont keep up.

out of curiosity i was reading a feature on an 2.1 zvh in an old mag i've seen the car on here before its the one that takes on the evo and wins ("its-evo-time!!!!!").
anyway he apparently has bigger modified injectors??? does anyone have any ideas as to where these came from or how to modify the std ones in to bigger ones???

 

here is a clip of my car at ford fair with its old set ie t34 kent cam

www.radley.plus.com/FiestaFordFair.wmv

thanks

 

Here's a pic from the feature it had in a mag
Phat ride, was at the Pod on central day if you was there

 

yeah i was at the pod best time of the day 14.06 at 105 still got to sort out my traction problems i will be at redline rumble so hopefully should be in the thirteens the pod is a lot harder then it looks

 

mine is a 2.1zvh and i run it at 14psi (standard tubby) and i makes 212bhp and 236lb/ft

 

is that with standard rods ?

 

yes these are on standard rods i've already sent you a photo of my power graph with my new set up. I am only running 19 psi but this is only because my injectors are at there limit and if i want to run more boost i have to go up to either light blues or greys

 

Standard Zetec rods aye?

 

christ!!!!!!!!!!!!!!!!! those rods must be right on there limits if your pushing that sort of power and theres me getting worried how they might fair up holding 230 bhp

 

oh yer thanks to ur graph my tuner has had the conrods shot peened and is going to run greens up to 23psi with std zetec head and 130ps cams and 8:1 c/r with fully mapped omex and boost controller and a hybrid t34!

my bank manager loves me!

who wants to place a bet on the results of the power graph then ?

 

well i've got a fiver says its better than std. LOL

 

 

mrviper i'm guessing around about 290bhp and 350fbt get your head ported m8 i am also running 70 shot of direct port nitrous but i have to turn my boost down to 15psi i`ve got three setting on my turbosmart boost controller 10,15,19psi when i use my nos on 10psi it goes up to 13 on 15 psi it goes up to 19 i wont touch it on 19 my injectors cant provide the fuel for anymore need a set of greys and this is on standard rods what are the limit for standard rods god knows i am not going to push it anymore until my new bottom end done.......400bhp plus nos here we come

 

shurely i cant use all of the 290 bhp on the road

what power would you run for regular country road thrashing?

 

here is a few pics of the engine http://web1.uh-hosting.co.uk/~cheesywh/zetec/

 

hi there,

it all depends on your fuel management, if your run standard ford KE then anything over 17psi without extra fuel is dangerous. but with a fifth injector kit or EFI conversion is fine.

 

most of the time i run round on 10psi i turn the boost up Occasionally especially when i am racing someone since i've had my cts stage two plus box and zoo motorsport fully adjustable lower arms using all of my power is a Breeze i want more hopefully all should be finished by ford fair just a few things left to do
new spoon style cossie inlet manifold
s8 ecu with switchable maps one for normal use and the other for nitrous
new zetec block with steel rods and je pistons
new cossie loom with coil pack driver and lamba sensor
a set of grey injectors so i can run a Maximum of 29psi
Hydraulic clutch operation so i can get a clutch with a really heavy duty cover wrc style cant get a paddle which stops slipping when i activate my nos just imagine having a paddle clutch pedal as heavy as a 1.1 fiesta
twin brake Reservoirs one for the front and one for the rears with a brake Biased valve
fully indepentant rear beam ( still in development ) like you get on the focus most of the bits i have already got brom at zoo motorsport is in the process of making the other bits

 

could you pm me how much a fully adjustable lower arms setup cost

 

I've herd somewhere that the rods were only good for 300 bhp and the crank for 350, but you just proved that theory wrong

 

the standard crank is good for 450bhp i dont know about the rods but i am not going to push them any futher dont want to destroy my head due to benting a rod or breaking it like i've said i have got eagle steel rods and je racing pistons so when my new bottomend built i can whack my boost pressure up and reach the power that i am Targeting