zt-adz

Has anyone succesfuly done a 1.8 zetec turbo using skimmed pistons? and what kind of boost can you run on them?

i have just done 150 miles in mine running it in and it has cracked all my pistons. ive been told i may need a decomp plate aswell as it is still too high compression, is this right? any help appreciated.

cheers adz

Rick

something is seriously wrong if you have cracked pistons running it in.

zt-adz

yer im just trying to find out if the pistons can take boost because the fueling was low so that might of tossed the pistons, but theres no point me putting new pistons in if they are jsut gunna melt again

MarK4

Mate thats much more likely to be the inadequate fueling, how much boost were you seeing during running in period?

zt-adz

it was probably hiting about 5psi but i wasnt bringing on boost properly. how much boost should the standard pistions skimmed take? the fueling was exactly the same as when it was on a standard fiesta turbo i hadnt changed anything

rst in breaking

iTrader: (2)

id imagine the fuel pressure would want go go up to compesate for the bigger capacity?

scottp

get a decom plate and fit std pistons, they are weak enough!

NEEDFORSPEED

it was fine as it was mate you know how much i ran thru mine for how long! all down to the map, what chip did you end up getting? which efi did you revert to? fiesta turbo or zetec? stick the omex back on and get it mapped once fixed. got any pics of the pistons?

MarK4

Not sure then, should always fueling checked whenever you change something as important as a management swap

zt-adz

NEEDFORSPEED

it wasnt mapped mate it was just on standard fiesta turbo not set up or anything, i took it to protek but they didnt have a clue what they was talking about. il get some pics when i go to lewis garage hes stripped it down for us. do you think i should get a decomp plate aswel as skimmin the pistons?

Rex Kramer

iTrader: (1)

this happened twice to my mates 2 litre, he put it down to running lean then sold it with a stantard motor in it.

zt-adz

MarK4

id not had the car running befor so i was trying to run it in so that i could get it mapped. will be gettin it set up first now tho lol

NEEDFORSPEED

na not on an 1800 be a better idea on a 2.0 but the 18s are lower comp than them anyway. were you using standard fez injectors and everythin? strange that its done that at 5 psi without nailing it

NEEDFORSPEED

been to protec when they were in preston theyre mainly vauxhall rally people they couldnt figure out what was going on zetec-turbo??? lol

zt-adz

yer fiesta turbo injectors. just need 2 get hold of some more pistons and new rings then n get it back together then get it set up. what boost would i be able to run then when its set up with new injectors etc?

NEEDFORSPEED

not sure not mega bout a bar? but its enough mine was higher comp than yours and ran 12psi without water injection and was about 220bhp ish and drove mint. reliable. lewis actually stripped it? not been his new place yet

Rick

have the pistons cracked or melted?

biscuittin

i've just bought a 1.8 zvh escort
its running 14lbs boost
standard pistons , comp ect
fiesta turbo head with a high lift cam ( not sure which )
efi on beige injectors . it's done approx 6000 miles no problems
fiesta turbo ecu , set up at msd
not sure what went wrong with youre car ???

NEEDFORSPEED

your fine putting 1800 streight in with a zvh run a bar all day long no problems but with zetec head you lose alot of space in the chamber so you have to skim pistons or use de comp plate.

zt-adz

yer lewis has stripped it already, his new place is massive. i think there cracked but hav det marks on them aswell and 1s melted or somethin i wil find out tomoro when i go down.