I seem to remember Mr york saying that rover pursued all out power at the top on on the tc... So for everyday drivability your exhaust may well be an improvement.That's going to change the characteristic of the engine torque curve, with the branch lengths so much shorter and the 4:1 rather than 4:2:1 arrangement. I believe it will help the top end a bit while softening up the middle, but I'd have to refresh my memory on that. How much of an effect will depend on how much attention Rover paid to the TC's exhaust tuning.
It looks like a fine solution to the cracking problem.
Yours
Vern
Could you please tell us more about this?
I have a 2200TC and the 2 into 1 section where the manifold meets the exhaust pipe is formed by flattening the two pipes into two semicircles and welding them into an exhaust pipe sized collar - looks less than optimal. I have looked in the workshop manual and now obtained a second hand manifold where the two pipes go into a proper 2 pipe collector then into a single pipe and collar. The 2200TC version looks much more restrictive.That's going to change the characteristic of the engine torque curve, with the branch lengths so much shorter and the 4:1 rather than 4:2:1 arrangement. I believe it will help the top end a bit while softening up the middle, but I'd have to refresh my memory on that. How much of an effect will depend on how much attention Rover paid to the TC's exhaust tuning.
It looks like a fine solution to the cracking problem.
Yours
Vern