Performance difference T350 & Sag
Discussion
scotty1 said:
thinking about a bit more ooomph 
, but don't know how much more I would realistically get from a SAG ??
, but don't know how much more I would realistically get from a SAG ?? Haven't driven a Sag, but I wouldn't have thought there would be much difference in performance, bearing in mind TVR revised their power fig for the Sag to 380.
Prob only worth changing if you preferred the general suspension setup of the Sag, otherwise you may as well just look into increasing the power on your car, like Lensey's motor.
Edited by AlexRWD on Sunday 14th January 20:06
I was torn between the T350 and Sag and was asking the same question. Feedback I got was that the Sag feels more planted but that the 350 'feels' quicker and has more direct steering. Confused??? So was I, and a test drive didn't help either as I simply thought they were both blinking quick.
IMO they both shift and for me it came down to styling preferences. Sorry, no videos
IMO they both shift and for me it came down to styling preferences. Sorry, no videos
having owned both for a time I can confirm that the Sagaris is quicker in a straight line, as it should be. But the difference isn't huge, which is as it shouldn't be. The 4.0S engine has a little more power all the way from 4k to 7500. It's not a great heap but it's there and the 4 litre gets going earlier at 4k as opposed to 5k for the 3.6. I think the 3.6s are allowed to rev a little higher so they claw a bit back there as you can hold on to a gear a little longer. So overall there is definitely a difference but it's not huge. Again quite as it should be. The Sagaris is more confidence inspiring which allows/encourages you to push on a bit more and its composure makes it feel not quite as fast as it is, so you go quicker but don't notice it quite so much which adds to the feeling of it not being much quicker. As for being meaningfully quicker A-B down a country lane, I'm not sure. You need a huge performance advantage in the real world to dust a committed hot hatch.
Straight-line speed I would have thought is dependent on the state of tune of the engine and that between individual cars there would be little difference between a T350 in a good state of tune and a Sag in a poor state of tune. On the bendy bits I would have thought a set of Nitrons or Protechs or something similar could bring the T350's handling up to that of the Sag.
Interesting figures Lensey. The comment I had pre -dyno run, was that it didnt matter what TVR it was East Coast Customs ( fastest EVO6 in World and celebrated engine Tuners)had never had a TVR of any type ever produce over 305 bhp on their dyno. I was very pleased therefore that my 3.6 produces 338 bhp in a superb power curve. Heath Briggs always said that my car had a really good engine, and he was right. In my view and in the view of some recognised engineers the T350 is as quick and even quicker top end, but doesnt handle as well in standard set up. A good set of dampers, ride height setting and corner weighting transforms totally the T350 into a weapon. I have also had the arches sorted on my car and it is running the same tyre dimensions as a Sagaris. The diff ratio also makes a difference as all 350,s were fitted with a 3:9 diff. 3:7 could be specced for an additional £1400. Standard box and 3:7 diff gives blistering acceleration even in a Tamora. Therefore a well set up Tamora has the ability to leave a Sagaris standing. Even more so on undulating terrain where the Sag will have left half the front splitter all over the road.As usual its horses for courses- and we have also to think of the aesthetics of the vehicle.
bobd said:
Interesting figures Lensey. The comment I had pre -dyno run, was that it didnt matter what TVR it was East Coast Customs ( fastest EVO6 in World and celebrated engine Tuners)had never had a TVR of any type ever produce over 305 bhp on their dyno. I was very pleased therefore that my 3.6 produces 338 bhp in a superb power curve. Heath Briggs always said that my car had a really good engine, and he was right. In my view and in the view of some recognised engineers the T350 is as quick and even quicker top end, but doesnt handle as well in standard set up. A good set of dampers, ride height setting and corner weighting transforms totally the T350 into a weapon. I have also had the arches sorted on my car and it is running the same tyre dimensions as a Sagaris. The diff ratio also makes a difference as all 350,s were fitted with a 3:9 diff. 3:7 could be specced for an additional £1400. Standard box and 3:7 diff gives blistering acceleration even in a Tamora. Therefore a well set up Tamora has the ability to leave a Sagaris standing. Even more so on undulating terrain where the Sag will have left half the front splitter all over the road.As usual its horses for courses- and we have also to think of the aesthetics of the vehicle.
Lenseys figures are interseting for the wrong reasons I'm afraid, but they show how easy it is to "fake" power increases.
Your comments on the diff rations are a bit suspect, T350s and Tamoras were never fitted with 3.9 diffs as standard. They were 3.4 ish with a 3.7 if you went for the CR box option. You seem to suggest a drop from 3.9 to 3.7 would give better acceleration - which is again not quite true.
A standard Tamora is a very good car, and as I have said many times before, the best TVR straight out of the box, but it wont leave a Sagaris standing without some very serious expenditure. (We have a very well sorted blue printed 4.0 Tamora at home in the garage so I know this to be true
) Hope thats not all too negative, but we need to get facts right before folklore takes over.
Dear Daftlad,
my apologies in my enthusiasm the ratio of 3:9 was incorrect and you were indeed correct. The difference between a diff ratio of 3:4 and 3:7 is understood by me. Too many beers! However my car was fitted with the 3:7 diff and the close ratio box was fitted at a later date. I do therefore know the difference between the diff and gearbox combinations.
All the best anyway mate.
my apologies in my enthusiasm the ratio of 3:9 was incorrect and you were indeed correct. The difference between a diff ratio of 3:4 and 3:7 is understood by me. Too many beers! However my car was fitted with the 3:7 diff and the close ratio box was fitted at a later date. I do therefore know the difference between the diff and gearbox combinations.
All the best anyway mate.
Edited by bobd on Friday 19th January 15:00
vikingt350c said:
just had decatt and remap by dulford and now the t350 is pushing out 399bhp proven.
That can't be a standard 3.6 engine you've got, even a 4.0 S spec engine would struggle to produce a genuine 400bhp. I assume your car has been modified in some way as I think I'm correct in saying that a re-map alone is not going to take you from 350bhp to 399bhp.
bobd said:
Dear Daftlad,
my apologies in my enthusiasm the ratio of 3:9 was incorrect and you were indeed correct. The difference between a diff ratio of 3:4 and 3:7 is understood by me. Too many beers! However my car was fitted with the 3:7 diff and the close ratio box was fitted at a later date. I do therefore know the difference between the diff and gearbox combinations.
All the best anyway mate.
my apologies in my enthusiasm the ratio of 3:9 was incorrect and you were indeed correct. The difference between a diff ratio of 3:4 and 3:7 is understood by me. Too many beers! However my car was fitted with the 3:7 diff and the close ratio box was fitted at a later date. I do therefore know the difference between the diff and gearbox combinations.
All the best anyway mate.
Edited by bobd on Friday 19th January 15:00
No problem.
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