The Grinnall Scorpion is a fantastic vehicle. I had similar clutch/drive shaft problems (due to over-aggressive use/fun).
If you treat it with love and respect, it is probably fairly reliable. I wouldn't know!!!
Watched the video - you're mad - enjoy your car. Thinking of selling mine now we have a baby, but what else can I get? BMW 540i seems to be the best value for money, but would it be as much fun - no!
I didn't sell it in the end, and having compared running costs, I decided that nothing else could offer the same fun at the price. Having languished in the garage for 2.5 years, I fitted it with new suspension, which has made it much better on uneven roads, and I am now once again enjoying the car.
I owned a Grinnall Scorpion 3 for a year. It was without doubt the most fun I have ever had in a vehicle. However, I found that I was driving faster and faster, until one day I nearly caused a serious crash due to speed madness, mine not the other guy's!
I then decided to sell it on, and I now regret it! I had a JZR, which was excellent, but no match on performance. Sorry John Ziemba.
Well, now I have a small legacy to hand, and I want another Grinnall. But even in these difficult times, I can't find one at sensible money. Are there any out there? Please contact me if you have one. The only problem I had was with an incorrectly fitted clutch. Phone Patrick on 07906821862 if you have one for sale. Ta, and drive carefully.
Just to end the story, I decided to sell the car, and it's now in the hands of another owner. With 27 years of motoring behind me, it must rate as the most exciting car that I ever owned, but it did scream at me "thrash me - go faster".
The day before I sold it, I took it out, just to put some fuel in it, and within 5 miles of leaving my house, I had hit 8000rpm+ in 2nd gear and passed a car and a lorry in a truly wondrous hail of noise. And that was the problem - how long can I carry on like this?
Anyway, I have moved on, but it was a wonderful and fantastically exciting car. I am glad I owned one. Buy one before you're 40, and have a good time.