emc-rst

as above

dug112y

iTrader: (1)

in what way? you will use oversized rings with the appropriate oversize pistons.

emc-rst

I think i have std pistons with oversized rings and was wordering if they would last or would i be better off getting oversized pistons

COLEYST200

iTrader: (3)

the rings and pistons have to be the right size for the bore of the block

Chaz888

I would not skimp on such a critical part of your engine best get the bores sized then get the correct piston and rings maybe just get them rebored ,did try this on a mini years ago the piston and rings were right on the limit so I just got new rings within months she was a real smoker an oil burner ! so do it right !

emc-rst

i havent taken the pistons out yet, I just asumed that it was std pistons with oversized rings as the guy I baught it from said he put oversized rings in it and that it had been boared out

COLEYST200

iTrader: (3)

you can not bore a block and put std pistons back in as they will slap big time smoke is just rong . Wot motor is it

emc-rst

is their such a thing as oversized rings on std pistons

COLEYST200

iTrader: (3)

Right lets start again why are you asking about over size rings pistons . is the motor running ruff smoking nocking and iv said wot motor is it

Chip

iTrader: (3)

Pistons should have an appropriate clearance for the bore, on a typical 80-90mm bore it will usually be a couple of thou on a standard engine and double that on a forged turbo engine.
Rings have an appropriate clearance as well, normally in the 15 thou or so ballpark on a similar sized bore.


You cant increase the size of either one without altering the other as the other would end up far too loose.

Chaz888

Lol dude pull it apart first then see what you have .

emc-rst

so do you think i has o/s pistons then

dug112y

iTrader: (1)

i would say no as the pistons would be slack in the bore. i am guessing you have been fed a lot of pish tbh. what engine is it and why are you stripping it? does it smoke /knock etc

Paul_RS

iTrader: (4)

Nobody knows! You have to take the thing apart to find out

Chip

iTrader: (3)

I dont even know what colour your car is how the fuck would I know what size your pistons are?

xr_craig

iTrader: (2)

If he tells you its red will that help?

emc-rst

its an rs turbo engine mate, my engine is needing a few quid spent on it so i baught another 1, the guy said it had bottom end rebuild used the engin then took it out because the shell was fucked and the engine was left laying for 2 years, so i took the big ends and mains out to check them and the shells are quite worn

dug112y

iTrader: (1)

dude ,try answering the questions people are asking you. if you have this much lack of knowledge i dont think you should be stripping/building engines IMO.

Chip

iTrader: (3)

Red ones are faster, so must have the right pistons

Was just trying to get across that to know what size his pistons are I would need to open his engine up and get measuring, and Ive not even seen the car let alone inside the engine.

dug112y

iTrader: (1)

well theres a fair chance it aint had a bottom end build mate or its been really badly built.

emc-rst

thats what i was thinking or it has never had an oil change

emc-rst

I wasint asking you if you knew what size my pistons are I was asking is it more than likely o/s pistons because you sead you cant increase the size of 1 without the other

dug112y

iTrader: (1)

you could run an engine on same oil for a few years and have no damage mate.....i think you have been shafted with a fucked engine.

emc-rst

[quote=dug112y;5759058]you could run an engine on same oil for a few years and have no damage mate.....i think you have been shafted with a fucked engine.[/qu

A think so mate cheers fur the help

Chip

iTrader: (3)

If its had one, its had the other.