How Do You Seperate Pistons From There Rods?

[Goliath 94]

I have some low comp pistons to go in a 1.9 engine I am rebuilding but i need to put the pistons onto my 1.9 rods, how do I get the standard pistons off and the new ones on? It looks like the shaft that the rod rotates round should just push out but I dont want to damage anything by doing it wrong!

cheers!

[Alan_M 66 1 Cars]

Aren't the 1.9 8v gudgeon pins pressed in, rather than held in by circlips?

 

You'll need a press then.....

[Goliath 94]

Theres no circlips so yes i would assume they are pressed in, ok cheers, I will give it a go pressing them out!

thanks

[pug_ham 242 3 Cars]

For 8v rods you need use of a press or a decent vice (depends how concerned you are about the pistons) but the Mi ones with a circlip I just pushed the gudgeon pin out by hand once the circlip was out.

 

Graham.

[benlilly 0]

They might need quite a bit of force to shift them - almost certainly need a press.

 

If you do remove them ok, probably best to get a local engine rebuilders/machineists to fit the rods to the new pistons. I think they usually heat the pistons so they expand and make fitting easier and less likely to cause cracks. My set were def. heated.

[benlilly 0]

I think they usually heat the pistons so they expand and make fitting easier and less likely to cause cracks. My set were def. heated.

 

Sorry, I meant heat the rods.

 

Ben

[Crazy-legs! 0]

Sorry to hijack, but just out of intrest are the gudgeon pins a press fit in the pistons or the rods?

 

Cheers, Marc.

[welshpug 1,627]

Sorry to hijack, but just out of intrest are the gudgeon pins a press fit in the pistons or the rods?

 

Cheers, Marc.

 

 

depends which engine you want to know about.

[Crazy-legs! 0]

An XU10J2TE 2.0L turbo.

 

Cheers, Marc.

[DamirGTI 327]

Theres one special tool for this job , however not so many garages have one except the Peugeot/Citroen service ..

Anyway it can be done with a vice , but i found it a bit dodgy it's one of those "odd jobs" ..

 

Pistons/conrods assembly procedure and tool description :

 

Peugeot

http://s27.photobucket.com/albums/c151/Pie...;current=1P.jpg

http://s27.photobucket.com/albums/c151/Pie...;current=2P.jpg

http://s27.photobucket.com/albums/c151/Pie...;current=3P.jpg

 

Citroen

http://s27.photobucket.com/albums/c151/Pie...;current=4P.jpg

http://s27.photobucket.com/albums/c151/Pie...;current=5P.jpg

 

 

Rgs !

Damir

[pug_ham 242 3 Cars]

Theres one special tool for this job , however not so many garages have one except the Peugeot/Citroen service ..

Anyway it can be done with a vice , but i found it a bit dodgy it's one of those "odd jobs" ..

I only used a vice to get the gudgeon pin moving on one set & the pistons weren't being reused anyway.

 

If I was wanting to reuse the pistons I'd pay for it doing proper if I couldn't find somewhere to do it myself.

 

Graham.

[gtimon 0]

I don't Know if it will work with these Pistons, but I use to change my pistons on my old ford 1650's or V6's and Mini 1340 'S' using a bucket of very hot water and dip the pistons in one by one. Leaving each one in the water for approx. 15 secs to expand them and then using a brass or ali rod and knock them out with a light mallet, not a lump hammer!!.

 

Then same with the new ones in reverse.

 

Never had any probs, doing it that way.