Red16

im looking to build a new zetec turbo engine but need help with the top end. im unsure who to use for the headwork, and also what spec i will need, valve sizes etc as you see them listed as stage 1, 2, 3 etc.

where to send the head to get the work carried out? and cost?

i also know very little about cams, so some advice or recommendations on that front would be cool too

do you only need to upgrade the valve springs if going for a higher revving engine?

im aiming for 350+BHP with a similar torque figure

The spec i have in mind is : lightened and balanced standard crank and flywheel
ARP bolts
steel rods
8.2:1 C/R
tubular exhaust manifold
0.63 t34
Rover M16 inlet manifold
custom intercooler (triple 2wd cossie)

Red16

bttt

bassboy

your best bet is get the head reconditioned and flowed, standard sized valves and you should see 340-350hp...rudey hit 320hp running standard head and cams with t34 but the head cracked so it was aborted...however it should now produce more power with a new head...

judging by that, im going for a flowed head and standard valves, IH cams, vernier pulleys, RS1800 inlet (for now) and undecided on turbo and hoping for similiar power figures to what your after...oh and you might wanna consider dropping the cr a little to make it a little safer

SOY, ran 366hp IIRC running big valve head and custom inlet...however his car never ran its full potential due to a few problems ive heard....could have gone 400hp+ but was running out of fuel according to Ian Howell

bassboy

RSCossieGaz

iTrader: (6)

thats imressive figures from rudey and thats with standard head,cams and running t34 and low comp pistons wasnt it bassboy,not including the price of the turbo how much would it cost to do this

Red16

cheers bassboy very impressive figures for rudeys standard head, sounds like a similar spec to the zt ive just sold on ebay c/r isnt decided yet, just thats the one im considering more than the rest but im open to persuasion

Red16

forgot to ask... who done SOY's headwork?

bassboy

gaz your prob looking at about 2000...

low comp pistons - 500
steel rods - 600
rs1800 inlet
erst exh manifold - 25?
machining work to block - 100ish
t34 - 500
complete rebuild - 250

plus mapping plus injectors and labour

but just engine aint too much...ita the rest that adds it up lol

red16...i wud say 7.8 maybe less

bassboy

RSCossieGaz

iTrader: (6)

what managment would ya need to run- cossie?

PhilM

Good advice there bassboy

MGSTU on here is pretty handy with Zetec heads, may be worth PMing him, has a flow bench etc

bassboy

gaz yes but iirc u have to convert it to run coilpack...or any aftermarket management...im going for S8 more than likely

bassboy

Red16

did SOY and RUDEY both run lots of boost, ie around 2bar ?

and has anybody used this guy http://www.pumaracing.co.uk/Head_Prices.htm for head work?

Badman38

iTrader: (2)

i have one of his 45mm valve cvh head quality workmanship, on my 1.9cvh at 22psi engine was making 296bhp and 297fbt then on my 2.1zvh 311bhp and 296fbt but engine ran out of fuel at 19psi this was on greens....my new spec 2.0 zvh steel rods,750cc injectors,custom newman cam,gt25/40r roller bearing turbo tubular manifold this time on 2bar of boost will have to see what power i end up with the car currently at zoo motorsport should have it back this weekend

Fudgey

iTrader: (4)

im currently building a 2.0l ZT

spec:

0.5mm oversize wiseco pistons 7.8:1 CR, may see if he will do em 7.2:1 CR yet, dunno.
Steel rods
prolly get a specialised engines stage 3 head (std valves i think?)
piper or kent cams
T34 with .63 housing
primary designs tubular manifold
S8
injectors - prolly get 750cc ones
might try and ge a focus RS inlet too

aiming for 350bhp

PhilM

Fudge, don't bother with a specialised engines head mate, get Spencer or mgstu to d you a ported one

Focus RS inlet? Why

Red16

some good figures you got there mate, how long was the turnaround for the head from pumaracing?

aye should be interesting to say the least

fudgeass, nice engine you got planned, ive not seen any 7.8:1 pistons for sale are they custom jobbies? they all seem to be between 8:1 and 10.5:1

Fudgey

iTrader: (4)

red 16, yeah they are custom ones, but will be for sale to the public when they have finished mine can have a CR that you want too, and they are ceramic coated to help disipate the heat.

philm, yeah i spoke to spencer, but i can get the head for free from SE

Red16

ooh, i'll keep an eye out for these pistons when im ready to part with some of the queens finest

and as for a free head... you jammy git

Fudgey

iTrader: (4)

perks of the job mate

the pistons will retail for about Ł450 + VAT iirc, will have to check tho.

Red16

well all i can say is "it must be nice"

Badman38

iTrader: (2)

the cylinder should take a week forty hours there so much work in getteing the cvh head right, but mine took more like three he was fitting it around other work flow rate is 10% cfm less then a ported 16v zetec head

mrviper

what power can a zetec turbo do with a 9:1 c/r and a t34 ? and standard head

Red16

* Rudey *