Picked me bike up from the Workshop today and rode it home, on the way noticed when i stopped at crossings it was Smoking alot from the back part of the block, got it home and checked the oil, it was FULL to the brim and smelt of gas, i dont know if the Workshop filled too much oil or if ive got a cracked block,
im now in the middle of dropping the oil and refilling it to see what happens,
has anybody had this Problem before?

 

No sure on your year, and I didn't have this problem on the bike. But I had it on a gas generator. I left the gas shut off open and gravity leached gas though the carb, into the heads and down into the oil pan.
Same thing could of happened to your bike.

 

PRAY it did not mess up your bottom end.
Need more bike info, Fuel Injected/ Carb? Year/Mileage? Mods to engine?

First things first. PRAY it did not mess up your bottom end. buy cheapest oil you can in 20-50 and don’t replace the oil filter just change the oil, this will get the rest of the gas tainted oil out, run for only 2 or three minutes then drop that oil and filter and replace with good oil and a new filter. Pray it did not mess up your bottom end.
Now with that out of the way,
Carburetor’s have Floats these can come out of adjustment and cause fuel to leak past and get into oil.
Very worn rings can put gas in the oil.
Running with poorly tuned carb can cause excessive fuel in the oil.
And there is more…. But I would start with a Float out of adjustment.
Oh and did I mention PRAY it did not mess up your bottom end.

 

"full to the brim" means what? Liquid up to the edge of the filler neck?
Why was your bike in the "workshop"?

 

yes opened the filler cap and it started running out,
it was in becouse of carb Problem S&S Super G, and new Belt.
ive got a 113ci from S&S built in the bike, (was so when i bought it)

 

If the bike is carbed you have either a stuck float or stuck needle, till it is fixed (unstuck) you will fill the crankcase again. The cylinder in question should be flooded.

Edit: sounds like you still have a carb issue. Hope no new damage occured.

 

Workshop working on a carb bike for carb problems=good chance a jug filled with gas and drained past the rings into the crankcase.
Do not start bike until oil is drained and changed.

 

I would be talking with the shop right away. Unless there was a problem with it draining down before you took it there they may have caused the problem by incorrectly adjusting or using or re-using faulty parts.
What did they do and what parts were used (on your receipt). How long was it at the shop?
That much fuel had to have an open shutoff (if bike has one) and an open float. The float could be adjusted wrong, or the needle seat damaged, something that allowed fuel to leach from tank to sump.
How long was the ride home?
With a possibility wiped bearings in the lower end, one might consider going to another shop for assessment. If your ride home was short, and you did not ride hard, it may be o.k. Document everything.

 

With a carbed bike you should shut the fuel valve off when it's parked for extended periods like overnight.

 

This is what I started doing after the float needle got stuck while in the garage and only leaked a tablespoon. But stunk up the garage for a week.
I still do it even after I cleaned the carb.