Viper rebuild

[Kevin Amstutz]

I lost a cylinder do to a plugged pilot jet. I got another used cylinder to replace the bad one. Do you hone these cylinders or just throw in the new rings and go? I have been told to hone and not to hone. BTW stabil will not keep the pilot jet from plugging. I had to clean all 4 of my yamaha's pilot jets.

 

[Sxr700Bandit]

I personally would put a light hone on the cylinder because my feelings are that it gives the rings and cylinder a chance to wear into(get to know) each other and seal better/quicker.

There is NO cure for pilot jets plugging but to put your sleds away with clean dry carbs. Todays fuel sucks!

 

[daman]

If it's dull and hazy looking yea you can with a 3 stone spring flex hone 240-280 grit,this is something you can get at any local auto parts store.

but your only trying to get the haze out your not going to do much because the plating in theses cyls are very hard/tuff,actually it's not needed new Yamaha rings are designed to break in with out any honeing they have a special coating on them.

so it's up to you.

 

[Kevin Amstutz]

I am buying Yamaha rings and gaskets. The aftermarket gaskets are out of stock until the end of Feb, and the OEM gaskets were instock and only cost $10.00 more with shipping. The cylinder I got came with the stock piston and I only had 1600 miles on this viper, so that's why I went with the OEM rings. But the cylinder I purchased had 5200 miles and looks good, but with that hardened cylinder, I was told only a diamond hone would touch it and just put the new rings in and go.

 

[daman]

Again these plated nicasil cylinders dont need honing,there very hard,not like the old standard bores of years back.

one just needs to take the dullness out if anything at all. Most times you will still see the factory cross hatching