Re- plate or not?

**Wed Sep 14, 2011 6:46 am » Post: #1 » Download Post**

G'day Guys,

Ive ordered a new top end re-build kit and while waiting for it to arrive i decided to pull the cylinders off to familiarise myself with what i need to do. This is my first time opening an engine, but im pretty sure its not right - the piston (only done one so far) has a lot of blow by (just worn rings i guess) a few "marks" lines running down the piston and even a line (crack?)

The cylinder has numerous scoring marks all around but all very light marks (are these seizures or piston slap?), the crosshatching is still very visible. I cant see any gouges or anything i would suggest to be serious.

Not sure how to post the pics in a decent size, but links below Very Happy

Last edited by NSAAGGHHH on Wed Sep 14, 2011 7:32 am; edited 1 time in total

**Wed Sep 14, 2011 7:30 am » Post: #2 » Download Post**

**Wed Sep 14, 2011 8:03 am » Post: #3 » Download Post**

Mate, that bore is perfect. You could probably clean it up with some muriatic acid to remove any aluminium marks, and lightly scour it with green scotchbrite. Wash it throughly to remove any scotchbrite. Assemble and you're good.
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MC21 Honda NSR250. TYGA 300 conversion.

**Wed Sep 14, 2011 12:26 pm » Post: #4 » Download Post**

Cheers mate!! thats great news!

Where can i get some muriatic acid?

**Wed Sep 14, 2011 8:32 pm » Post: #5 » Download Post**

Pool acid

**Wed Sep 14, 2011 10:56 pm » Post: #6 » Download Post**

Too easy, I've got some in the garage Smile

Just googled it too, looks like you can have some fun with this stuff haha .. Now where's that aluminum foil?