The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => A7 & A10 Engine => Topic started by: Jowan on 19.08. 2017 18:24

Title: 1955 A7 Oil quantity/change
Post by: Jowan on 19.08. 2017 18:24
Hello all, I've had a great ride today out to see friends on the north Cornish coast, but...isn't there always a but!
I have wet oil on the inside of the exhaust pipe, the bike doesn't smoke. I've just checked the plugs & they were a bit sooty but nothing scary. Before a ride I put my index finger into the oil tank, it usually just touches oil, I then put a small drop in. Ok my question is am I overfilling the tank (I judge it to be roughly two thirds full when cold). I've not done an oil change since I've had the bike (10 months light riding) & I'd like to get the right quantity in the tank. Simple steps for oil change & quantity would be gratefully received.
Title: Re: 1955 A7 Oil quantity/change
Post by: muskrat on 19.08. 2017 21:17
G'day Jowan.
When you say "inside" do you mean inside where the exhaust gas flows or on the outside under the motor?
Cheers
Title: Re: 1955 A7 Oil quantity/change
Post by: Jowan on 19.08. 2017 22:44
Inside the pipe
Title: Re: 1955 A7 Oil quantity/change
Post by: muskrat on 20.08. 2017 12:29
G'day Jowan.
My first guess would be exhaust guide worn or loose.
Oil tank  should be about 3/4 full. If it wet sumped and you top the tank up, the oil in the sump will soon overfill the tank. That will give you oil on the outside of the pipe.
Cheers
Title: Re: 1955 A7 Oil quantity/change
Post by: Jowan on 20.08. 2017 12:54
Cheers, I'll drain oil when warm & re-fill to three quarters & go from there. Thanks again.