Tom McArthur will be out of Formula Ford 1600 action until June 2018 at the earliest, due to funding issues caused by an expensive crash at the Walter Hayes Trophy.
McArthur collided with his brother David in the final, rolling his B-M Racing prepared Van Diemen.
The pair had been trying to avoid hitting the stricken car of Cameron Jackson at Brooklands, but the ensuing rollover left an extensive repair bill to bring the chassis back to race readiness.
“The likelihood is I won’t be racing until June or July next year unless I can find a little bit of extra sponsorship,” said McArthur.
“Most of next year’s budget has gone to fixing the car. There’s quite a lot of damage.
“We’ve got the same set budget every year, so we know how much we can put into the cars over winter beforehand.
“We’ve had the damage report from the team, so we know roughly what it’s going to cost to get the car to its usual immaculate standard.”
The accident was especially unfortunate given it took place between team-mates and siblings.
“It was a bit gutting, especially considering me and my brother had gone from 27th and 25th [on the grid] to 17th and 18th in the first five laps,” McArthur added.
“That was the most annoying thing, we were scything our way through quite nicely, but it is what it is.”
With around eight months before his anticipated return to the track, McArthur is still unsure what his programme of events will look like for a partial 2018 campaign.
“I do the Northern championship because I like Oulton Park, Donington and Anglesey,” he said.
“I do the National when I can because it’s probably the best racing for the money you pay anywhere in Europe.
“The Hayes and the Festival are just versions of the National championship on LSD. If I could I’d do them all but obviously, that’s very rarely the case.
“I don’t really race for any other reason than fun. I just do what racing I like.”
McArthur finished eighth and 20th overall in the Northern and National championships respectively this season.
He missed both Anglesey Northern rounds due to scheduling conflicts, while only competing in the first half of the National season.