If I remove the gudgeon pin thus seperating the piston and conrod can I re-use the old gudgeon pins or do I need to buy new ones? Also two of my pistons have scores in the crowns. I'll try and take a pic tomorrow and post it but should I try to get new ones in case its really a crack??? Cheers Oli.
im sure they should be sweated on,
what zetec is it? but that might just be the 2.l black top
as for using old im not sure
Buy a piston and you normally get a free matched gudgeon pin with it. They come as a pair normally. And I believe they are a press fit.
They are, I'm sure, a press fit. Does that mean I can't re-use them then? I'll get a pic of the piston crown. Don't really want to go to all this effort and have a piston split in two! Oli.
The pin is a tight fit in the rod and the piston rotates around it.To press them out you will require a press and a fixture to locate the piston
against .This could be a bit of tube big enough to allow the gudgeon pin to fit in and shaped to fit the piston like a veeblock on the end. It needs
to be a good match to the piston and have no sharp edges to avoid damaging the piston.
If reusing the original pistons it is fine to refit them with the original pins , just make sure they are kept together and fitted the same way as
they came out.
Paul.
quote:
Originally posted by oliwb
They are, I'm sure, a press fit. Does that mean I can't re-use them then? I'll get a pic of the piston crown. Don't really want to go to all this effort and have a piston split in two! Oli.