Harrison made it three wins in three professional bouts
The 29-year-old, in his third bout as a professional, stopped the Polish boxer midway through the second round of their contest.
Harrison said his next fight would be on 1 December and that he was aiming to secure the British heavyweight title within the next 18 months.
"My team is happy with my development," Harrison told BBC Sport.
"There's a long way to go but I'm getting sharper and the ring rustiness is wearing off.
"The key thing is momentum and now I'm getting the momentum."
The British fighter dismissed criticism that his three wins as a professional had come against weak opposition.
"What's important at this stage is to face a multitude of opponents with different styles - a tall southpaw, a big puncher.
"You face all these different styles so that when you move up to the next level and you're fighting contenders, you'll be able to deal with them.
"What people need to realise is that the plan that we've put in place we're not going to see the end results of it for another three years.
"Against Derek McCafferty, I boxed at long range but here I did something different."
Harrison, who turns 30 next week, said his long-term objective had not changed.
"To be heavyweight champion of the world is my dream.
"That's my goal and somebody's going to have knock it out of me in the ring to end it."
The Briton said he was happy with the way he had seen off the challenge of Jurczyk.
"The first round, I needed to loosen up a little bit, stay with the jab.
"I kept him on the end of my jab in the opening round and was told by trainer, Thel Torrance, to work to the body in the second.
"I felt his power in the first round and didn't feel daunted at all.
"After the first round, when I realised he wasn't going to hurt me, we got inside and it proved dividends straight away."
London option
The next fight for the Briton could take place in London.
"We're looking at a few venues. London's on the agenda - that's a possiblity but we've got another city that we might go to."
He added that he felt he was on course to claim the British title within 18 months.
"Within two years I'm going to be the British champion without a shadow of a doubt."
Harrison said that he felt Lennox Lewis and current British champion Danny Williams were the only fighters who could trouble him.
"There's no-one else I'm worried about in the British division.
"I'm the real deal - I honestly believe that I'm going to make it," he added.