xr2i-carl

I am getting my FRST back on the road after 3 years sat in the garage.

one cylinder was down on compression originally, after removal it had a crack down the side. (boost hose came off turbo and boost went sky high which killed it)

Sent piston off to see what size and they dont have any piston that size. The car has 1.8 zetec bottom end, so the other pistons (going off prev build receipt) say 0.5 oversize. Which should be 81.1 but my piston is 80.9.

So that leads onto to what happened previously. One piston cracked before and a garage replaced it. They could have just slapped any old one in? (I had issues with the garage anyhow) or maybe all are of this strange size.

Just want advice on what to do next?

The other 3 pistons are fine and have covered only 3k miles. They are ''apparently'' 0.5 oversize 20thou skimmed to lower compression ratio?

whats your thoughts please? If it was the correct size then i would get one piston, machine it down for compression and re-fit along with new shells and rings. Now i dont know what to do!?

thanks

Carl

wirralphil

https://passionford.com/forum/genera...o-project.html

xr2i-carl

thanks for your help.

wirralphil

Why didn't you just bump your other topic

Have you took the other 3 pistons out and checked them?

Have you had problems with that piston in the past?

xr2i-carl

All other pistons are fine. Not sure which one cracked previously as it didnt say on receipt. Could be same, but not sure.

wirralphil

Have you took them out and measured them?

xr2i-carl

No, the garage only sent off the nakered one. So I asked them to send off the futher 3 just to confirm there indentical to the cracked one. If they are then i need to find out exactly what they are, as 80.9 is not 0.5 oversize piston from a 1800 zetec?!

wirralphil

With out knowing the size of the other 3 i'd just wait.

crazycage

if a boost hose came off how did the boost manage to go sky high??? you wouldn't get any boost into the engine.

xr2i-carl

I meant actuator one?! Little hose from actuator to turbo.

crazycage

i see .

xr2i-carl

well any more thoughts?

xr2i-carl

So what suggestions on what pistons to use?

xr2i-carl

Garage rekons they cant find any pistons to fit a 1.8 Zetec bottom end?!

If i get the bore size off him can anyone suggest anything?

RC4

so your dads took his car back after seeing your post on pistonheads PMSL

xr2i-carl

Sorry mate? Ive still got the 335d thanks. I aint selling it.

i aint posted on PH.

RC4

this is what the chaps at PH think of you kid



your well known (as the village idiot) on pistonheads carl(os)

It's Czech Mate

xr2i-carl

Oh well. I couldnt give a monkies mate. Most seem quite pleasant now.

So any advice on pistons? or shall I go elsewhere?

Charlie Chalk

iTrader: (1)

Link?

SiZT

You will struggle getting aftermarket low comp pistons for a 1800 zetec, my advise would be to either get a 2.0 bottom end or have your 1.8 bored out so it will take 2.0 pistons. Cranks are the same anyway

RC4

http://pistonheads.com/gassing/searc...D80&search=dxb
take your pic radders LMFAO

xr2i-carl

Hi mate,

Seriously? Is there no manufacturer for them? Would it be okay to bore it as far out as a 2.0?

Charlie Chalk

iTrader: (1)

dxb 61 up, 23 down get this on a mug
legendary automatic diesel 3 seies BMW that eats supposed supercars for breakfast.Unbeatable in the 1/4 mile drag.
The guy sat weeping at the traffic lights in his brand new, shiny 911. The dxb had pulled up next to him.





FPMSL

SiZT

I've never heard of a manufacturer, I'm sure CP would custom make some for you. For the cost of boring your 1.8 block out it would be far more economical to go down the scrappy and buy a cheap 2.0 engine and get that bored slightly. What is your 1.8 out of? Does it have oil spray jets in the block?

P.s having not actually seen a 1.8 block, I'm unsure if it's o.k to bore them out that far, though with the 1.8 and 2.0 Zetec it was only the bore size that was changed so I would think it's alright (this needs confirming). If you decide this route get FRS pistons (Makesure you get either FRS or Blacktop rods with them) as it leaves you with further boring potential and would be cheaper aswell

kniterider

i can ask someone for you if you like who may be able to get them for you/made.

what exactly is it your after as i can put you onto him (through escortevolution)

xr2i-carl

Right it was out of a mondeo. It does have the oil spray jets. The piston cracked so was goign to rebuild with stronger pistons but garage cant find any?!

Glenn_

iTrader: (1)

Good luck with the build.

Ad4m RST

Why not just get a blacktop and some omega pistons? least you're building with what you know.

xr2i-carl

blacktop as in a full on Zetec conversion..?

I dont want to spend thousands mate, just want to get her running again. Not in it for numbers.. I would be happy with 200HP mate. Just for a little fun thats all. I have the bm for track days and the like.

Ad4m RST

You can get a full engine for 100 quid, the head will run 200hp easily with a set of cams. Omega pistons aren't much at all, especially comapred to hunting down 1800 low comp pistons....

Wouldn't price yourself out just yet.

Neil@FastFord

Really?

I didn't know you had a BMW; tell us about it

xr2i-carl

Hi mate,

Where on earth can I find an engine which works/runs and capable of 200 Horsie for 100 notes?

Omega are Forged low comp yeah? How much a set?

zetaboostboy522bhp

ian howell of area six motorsport the man who invented the zvh engine and full blown zetec turbos and probably the best tuner of these engines in the uk will supply you with a full set of forged low comp pistons for around Ł600/700 quid . they are cp or arais which are both brilliant pistons . my advice would be buy a set and fit and forget.

cheers paul

RS Grant

iTrader: (1)

Pics of car? I've only ever known you go on about the 335d before.


Cheers,
Grant

Ad4m RST

How can you contradict yourself in your own reply?

You wouldn't just throw a smokey old zetec in and hope for 200hp, the omega pistons would need fitting eh?! Not read the bit about cams?

Think they're forged though IIRC, 250hp no problems. Or just get another forged set Accralie, Arias, CP as said if you're deffo going whole hog. What turbo you running now?

vroooom ptssssh

Do it once, do it right.....

3 options imo.

put a std 1600 back in.
build a 2.0 forged bottom end (i,e. properly)
get some custom forged pistons for the engine you have.

xr2i-carl

FCUK ME, all comes out now.

APPARENTLY ITS A 2.0 zetec block.

Was advertised when I bought it nearly years ago as a 1.8 and also the last company to rebuild it also said it was a 1.8.. Whats that all about.

Thought 2.0 zetec pistons were strong?

So I am now stuck with what to do..

A big re-build with Forged low comp pistons in the 2.0 block or whether to scrap it and get a 1600 used and leave it at moderate power?

vroooom ptssssh

I might have a forged ZVH bottom end and or big valve head for sale...brand new never run.

2.0's are the only blocks that had oil squirts btw.

andy130

iTrader: (2)

200bhp your better staying with CVH std bottom end with a good turbo/i,c you'll get a good 220