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Boring a 650

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I set up my cylinder with torque plates in the 4 jaw chuck on my lathe and bored it today for the 780 cylinder liner.

I was suprised that out bores are not lined but has a very thin plating over the aluminum. It is very shallow and my first cut with the boring bar cut it totally out.

Our bores if scored can not be rebored.

I will have to take pictures tomorrow and post them here on my 780 build up.

The cost here to replate the cylinder to any size you want is $450.

You can bore the aluminum to any size you want, send it out and they with plate and hone to your dimensions for this $450.

If your bore is damaged from a seizure you can use muriatic acid and eat the aluminum out leaving the plating clean and undamaged from the acid.

Just some worthless information I picked up today.

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I set up my cylinder with torque plates in the 4 jaw chuck on my lathe and bored it today for the 780 cylinder liner.

I was suprised that out bores are not lined but has a very thin plating over the aluminum. It is very shallow and my first cut with the boring bar cut it totally out.

Our bores if scored can not be rebored.

I will have to take pictures tomorrow and post them here on my 780 build up.

The cost here to replate the cylinder to any size you want is $450.

You can bore the aluminum to any size you want, send it out and they with plate and hone to your dimensions for this $450.

If your bore is damaged from a seizure you can use muriatic acid and eat the aluminum out leaving the plating clean and undamaged from the acid.

Just some worthless information I picked up today.

Plated cylinders have been the norm in the motorcycle business for 30+ years. Many (most) modern motorcycles can't be bored to fit an oversize piston.

$450 to replate a cylinder is about double the normal cost here in the US.

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Plating really did fantastic things in the two stroke world. The more modern MX bikes were great when all you needed was a straight piston change out as opposed to a rebore every time. I considered lining one of my twin Yamaha's but on balance it wasn't really worth it.

I set up my cylinder with torque plates in the 4 jaw chuck on my lathe and bored it today for the 780 cylinder liner.

I was suprised that out bores are not lined but has a very thin plating over the aluminum. It is very shallow and my first cut with the boring bar cut it totally out.

Our bores if scored can not be rebored.

I will have to take pictures tomorrow and post them here on my 780 build up.

The cost here to replate the cylinder to any size you want is $450.

You can bore the aluminum to any size you want, send it out and they with plate and hone to your dimensions for this $450.

If your bore is damaged from a seizure you can use muriatic acid and eat the aluminum out leaving the plating clean and undamaged from the acid.

Just some worthless information I picked up today.

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