could anyone here explain to me the pro's and cons of a full 130ps setup or a hybrid of 130ps exhaust and 105ps inlet cams

my aim is 275 bhp with a hybrid t34 (built to reduce the lag) 8:1 c/r standard head acralite pistons shotpeened and polished rods pro alloy intercooler omex and cosie greens

does it reduce lag when mixing cams or move the power up the rev range or give nice flat torque curve ??

any one got some roling road plots or advice to put me out of my misery?

my engine will be built in 2 weeks time and if i need to get some new cam(s) i will need to get them fairly soon before it starts geting built

 

Think theres gonna be a guide in next months Preformance Ford

 

wey hey! i shal be purchaceing that one

 

Might be worth speaking to Paul Ripley too.

I would like to Know to iam also building a 2.1 Zetec turbo, same compression ratio and pistons as you, not sure which turbo to use though, think iam gonna run it in with a standard T3 and then bite the bullet and buy a GT turbo

 

i'd be interested to know this too, as im doing same(ish) as the above lads

 

standard 2.0 / 2.1 mondeo engine , ( lowered comp obviously ) will produce 250 hp on a t3,

Dont forget no mater what engine spec u got you still need to get fuel !! into it ,

My engine is prety much standard internals except for a 7.6:1 CR , standard cams etc, t34 turbo with a 48 housing and im producling 300hp .
However it needed 400cc injectors and a good set up from kenny @ MSD

I also used a 2.0l throttle body

I once asked Ian Howels about mixing cams and he claimed he didnt know , Maybe he does do this but doesnt want to let on .

 

humm looks like we might be on to somthing lads

how much boost did you use to get 300 ponies ?

 

i started mine off with 130's

im now on 115's

think i may swap to a 115 inlet and 105 exhaust, see what happens, when i get it back

 

can you tell us what it was like when you swaped

and is it worth while geting some adjustable pulleys?

 

as yet i aint driven it so i dont know, but was well advised by various ppl to change down to the 115's at least

 

humm i suppose its a case of try it and see

i suppose there isnt that many zetec turbo's about rearly

 

i rember a vague conversation with someone saying tat the inlet of fuel/air needs to be a cetain ratio to what can be exhausted ,

Something about valve overlap and duration , doesnt realy mean much to me but perhaps stu could elaborate on this , and if someone can provide details of the different ford cam profiles we may be able to have a eduated guess as to what to use with our various specs .

 

it would be good to get this question resolved so in future when the question crops up we can tell people to read this thread

 

i would like to know as well as i am just running std 115 cams just now.

 

hows the car drive with 115 cams in there mate ?

im mainly interested in how the torque curvs look with diferent cams in there rather than peak bhp

im probably wrong but a 130ps exhaust cam would let the gas out good to spin the turbo and the 105 ps cam is good at making smooth torque for town driving

so with them combined together ya probably get a nice drivable engine with flatish torque curve

but om most likly talking total crap

 

it drives well and pulls well. comes on boost so fuckin strong. pulls like a train and only running 10psi.

 

I think youll find that these zetec turbos running "secret" cam's are a 105 inlet and 130 exhaust

 

mine will do fine the way it is. cant be arsed changing them tbh

 

130ps cams come "on cam" around 4,000rpm (on an n/a at least). Ideally want to come on cam around the same time as the turbo spools up for low-down driveability. Maybe 115ps inlet and 130ps exhaust for higher power engines...?

I'll probably use 105ps inlet and 115ps exhaust eventually (aiming for around 200bhp), but planning to keep the 130ps cams at first and see how she behaves

/al

 

. double post

 

can anyone explain what mixing the above cams does

i would pesume having a exhaust cam that lets more gas out than the inlet would aid in spinning the turbo up quicker or somthing

would love to see some rolling road graphs to compare cam combo's