Station cott 1's latest activity

Do you know the measurements in mm for a std 1052020

What’s the best hone to use

Bores look good not glazed annd can’t see any step at top and as Stanley says just a hone might be needed to clean up that discoloured one too. Piston looks eaten away as if by electrochemical erosion ? But if bore cleans up ok just buy same piston

Can you post a pic of piston also bore tops , if you can feel a ridge at top with fingernail then bore is worn, if you don’t have bore measurement kit , then a local engineering company should do it for £20ish, I measured mine with borrowed gear...

Yes standard size, the different numbers explained below relate to the actual standard bore size and which pistons required to get correct clearance

The 040 at end of part number shows it’s 40 thou oversize rather than +20

https://www.turnerengineering.co.uk/Default.asp?AccID=122596&PGFLngID=1&gclid=Cj0KCQiAw6yuBhDrARIsACf94RV6QbQ6ymLTJP0%2D6J8W7KxVE5sKJ9Z4OyBv5rlTLUVk3vFvXY%5FLlc4aAgt1EALw%5FwcB&gad_source=1 Good for engine parts.

You need to measure the bore & buy one to suit there are loads of suppliers of aftermarket pistons Std 1052040 is =40 tho If it was my engine I wouldnt be replacing one piston, id be doing the lot & have it machined so they are all the same. :)...

No they are slightly larger, just the tolerances from the factory. Standard pistons are ERR1390 & ERR1391.

The side of the piston is all rough had been stood for a while so water has got in and damaged it thank you for your reply I’m not really familiar with these engines 2 of the pistons have 1387 on them and two have 1388 will standard rings work on...

So if I needed a replacement piston will I have to get one with the same number or is there an equivalent piston with a different number on say std 1052040

Hi please could I get help I have a 200 tdi engine with pistons that have ERR 1388 stamped on them are these pistons standard size thanks