The Triumph 2000/2500/2.5 Register Forum

Very good point, I have no idea.

I was driving the car the other day and I had the folowing thought. If I have the wrong diff then why would the speedo be so accurate? So I presume I have a bog standard setup.

Hi Peter,
have you thought about going on a rolling road to get a proper accurate result of the engine's performance and current set up otherwise it can be just guess work.
If you are concerned about the extra weight of the panels under the car you could again get an accurate figure on a weighbridge, just to eliminate that question.
If everything checks out OK then the only route is engine mods or engine swap. My own early mk2 on the stromberg 150's and a 4.1 diff feels lively to accelerate if I rev it sufficiently but of course it's slower than a lot of moderns, which is where I notice it as I get overtaken, hills especially. Modern cars accelerate effortlessly past me on hills, my everyday car is a BMW116d,3 cyl, it's very punchy from 0-70 where of course I spend most of my time but is tails off at high speed. Regarding weight I think unladen on the T2000 is 1175kg and my BMW is 1430kg, modern cars don't seem to be light at all.
Let us know how things go.

Yes it is very bad at the bottom end. In the middle with the O/D it is quite lively , Top speed is good, going down hill with no passengers, Beaufort 8 tail wind. I dont try and overtake anybody because it normally finishes up as what the call out here an "Elephant Race" i.e. 2 Lorries side by side on the Motorway. We have all experienced it.

I have come up with a possible reason for the poor performance. The rear carb is flooding. I have put in a new valve and seat, I have changed the height of the seat by using thin washers no improvment It just seems to flood every so often. I have looked very carefully at the float there does no seem to be any wear or damage.The rear carb has always had this tendency. I thought I had corrected the problem as I did not smell petrol any more. Looking at the Rimmer catalogue I see that my type of float has been discontinued. It is replaced by an adjustable one.Stay Up Float - WZX1304 Does anybody know why? Was there a problem with the non adjustables. Float and Gasket Kit - WZX1300. Or was it just a money saving thing buy cutting down the number of parts.

Yesterday I did a Speed check 0 to 60 MPH was about 20+ seconds.

That does seem a little slow, but of course when road testers used to carry out these tests when our cars were new it was a case quite brutal treatment, standing start, high revs and not gentle with the clutch. Max revs through the gears to get about 14.5s on a mk2.
Flooding not good though, the float has to do just that, also correct level above the face and a well seated valve, then it should not happen.

Exactly my thoughts.

hi Peter, it has passed some time since this happened, but have you found the cause of the issue you had with your car?
i noticed you had rear carb leakage that persisted even after youbserviced the carb.

it seems we have the same symptoms, mine got even worse past month.

HS4s