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225 Pistons in a F7R

I have compared pistons between f7r, f4r, f4rt 225 and f4rt 250

My guess is you'll be fine, you just have to check valve clearance as that's not something i've tested.

Although i reckon it should be possible, the valve reliefs in the F7R are tiny anyway

Don't know the CR you'll end up from the top off my head but should be about 9:1
 
The difference in pin heigth means the megane piston sit lower iirc, so it will help you.

I have a set of catcams turbo cams and verniers for sale if you're interested ;)
 
If you compare forged low comp Pistons to 225 ones though, the forged have valve cut outs on

Indeed the modern wossner and JE pistons do but if you go back 10 yrs and look at the wossner pistons they didn't just simply dished. You will be fine there are many a turbo project out there with just skimmed pistons or some have been dished and and run fine.

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