I have read that the calibra turbo pistons fit inside the rs2000 engine but the con rods need to be machined so the piston pin fits, has anyone done this conversion and got any info on how it is done?

 

The pistons can be made to fit the zetec, not sure about the RS2k though. Pistons are soo cheap these days would it not be easier and less hassle to buy new forged ones? you will need new rings anyway. How much power you looking for? i put a decomp plate on my old sierra 2.0 dohc, for £117.

 

I am trying to build this on a budget so new pistons is out of the question the bore and stroke is exactly the same on both the l4 engine and red top turbo so should be less work than a ztech and as I already have the pistons to do this I'm now committed to doing it this way. I'd be happy with 250 bhp

 

The old msd r2000 turbo ran calibre turbo pistons a lad of here called turbo mook bought it off kenny from msd it drop him a pm.

 

Loads of um on RS2000-16v.com

Go have a look.

 

the rs2k engine are bullet prove aswel

 

Thought they were a bit head gaskety?

 

I think you would get 250 with std pistons and a decomp plate, @ a bar of boost on a good sized t3 turbo. Are the gudgeon pins the same size on both c20let and I4? if the bore size is the same then its easy i suppose, give the bore a hone and put the pistons in with a set of new rings. Worth bearing in mind that those pistons arent forged though, just good quality pressure cast items what engine management are you running?

 

Actually cossie yb pistons are FORGED aluminum, says so on page 1 of the sierra rs cosworth sapphire brochure.
tabetha

 

Oh well, doesnt matter any way as they wont fit an rs2k engine.

 

It is the gudgeon pin that I am unsure of that is the info I am after. I'm planing on running it on omex management. Ive done some research about the pistons and I got loads of info saying they are forged by mahl

 

cool, good luck with the project, post some pics up when its done mate

 

The con rod wrist can always be re-sized, speak to your machinist, depending on which way needs sizing it may just need a sleeve pressing into the rod, so money wise won't break the bank.
tabetha

 

Thanks for all the advice was very helpful now to make a start I will get some pics up when it's done.

 

Right a change of mind ive weighed up all my plans and now ive done a u turn on the calibra pistons as its more hassle than its worth.. im now going to use forged low comp pistons but have no idea where to get them from???????? HELP??

 

mate of mine owned a 2.3 turbo'd 4x4 one for a while

apparently 200sx exhaust manifold bolts straight on ports are near enough bang on

 

Thanks for that mate I will look into it.

 

try PEC, performance engine components, ive used them before, better idea than mucking about with the wrong pistons etc