Scooterotica

What's the current thinking on rubbing out the seize marks on a piston and aluminium off within a steel barrel. How is it best done ? Thanks

depends how bad it is- try some fine "wet and dry" initially and see how it comes up

Any pix available?

Chris

yes will try and post a pic, but not easy on here I think ??

It was always standard practice !

Clean both up with wet and dry (or use brick acid on the barrel), a wd40 rinse and a new set of rings!!

Possible run a three legged deglaze tool carefully down barrel after wet and dry.

It would still be my first plan of attack on an iron barrel as long as both are not "bad" and depending on how many miles they had on them.

When my iron barrel soft seized recently I just ran a three legged hone (£12 on eBay) through it and it worked a treat.

OK I have just posted a few pics in the above post to show the issue......thanks.

Scooterdude wrote:When my iron barrel soft seized recently I just ran a three legged hone (£12 on eBay) through it and it worked a treat.

OK I will have a look at one of these

yep- I recon that will clean up.

Chris

I'd not take too much off either as you may encourage piston slap. Just remove the high spots (a little wet and dry is perfectly ok for this), you don't need to try to end up with zero marks remaining... or slap may be the result.

More importantly, try to figure out why it seized and resolve the issue. What are your bore to piston clearances? What timing? Had you just filled up with different fuel, etc. If you don't resolve the problem then it'll happy again before too long.

Adam