Gudgeon pins

[antonyj]

Not sure it I already know the answer to this one...

Is it the norm to re-use gudgeon pins?

I have my 4.6 rods and pistons and now a set of 4.0 rods and pistons.

You know whats coming, the 4.0 pistons on the 4.6 rods

Obviously the pins need to be pushed out properly,(just scrapped a set of 4.6 pistons due to some one removing the pins and leaving bench marks on the piston crowns).

So......?

[dilbert]

Surely it depends if they are worn?

[thong]

antonyj said:

Not sure it I already know the answer to this one...

Is it the norm to re-use gudgeon pins?

I have my 4.6 rods and pistons and now a set of 4.0 rods and pistons.

You know whats coming, the 4.0 pistons on the 4.6 rods

Obviously the pins need to be pushed out properly,(just scrapped a set of 4.6 pistons due to some one removing the pins and leaving bench marks on the piston crowns).

So......?

that engine wont break them,and they dont wear,so yes re use them.

[Boosted LS1]

I agree, reuse them but give them a visual once over and maybe roll them on a pieces of glass. I doubt you'll come across a bent one though. They is well fat

Boosted.

[steve_d]

If the pins are that good a fit that you are having to consider how to remove them then they are ready to go.
If tight in the piston then heat the piston in boiling water to remove or refit the pins.

Steve

[antonyj]

steve_d said:

If the pins are that good a fit that you are having to consider how to remove them then they are ready to go.
If tight in the piston then heat the piston in boiling water to remove or refit the pins.

Steve

The pistons are a floating fit in the pistons, but an interference fit in the rod

[steve_d]

antonyj said:

steve_d said:

If the pins are that good a fit that you are having to consider how to remove them then they are ready to go.
If tight in the piston then heat the piston in boiling water to remove or refit the pins.

Steve

The pistons are a floating fit in the pistons, but an interference fit in the rod

OK but same thing applies. Hot water is easy to use and controllable and will work just as well on the little end as it would have on a piston.

Steve

[Boosted LS1]

steve_d said:

antonyj said:

steve_d said:

If the pins are that good a fit that you are having to consider how to remove them then they are ready to go.
If tight in the piston then heat the piston in boiling water to remove or refit the pins.

Steve

The pistons are a floating fit in the pistons, but an interference fit in the rod

OK but same thing applies. Hot water is easy to use and controllable and will work just as well on the little end as it would have on a piston.

Steve

No it won't, they're press/interference fit. The pin will heat up as will the piston. Water won't help remove them, just a press. Only a lot of heat will get them fitted.

Boosted.