TVR Power 4.3 here I come - great deal!
Discussion
Lotus E300S said:
Great numbers for a 4.3 Straight Six, are they the best for a Tvr straight six?
For the people that have published here: Modified S6 wiki, then yes!
Don1 said:
Lotus E300S said:
Great numbers for a 4.3 Straight Six, are they the best for a Tvr straight six?
For the people that have published here: Modified S6 wiki, then yes!chris watton said:
It would be interesting to see the total amount spent to achieve the 450+bhp mark.
As mine is effectively there (ended the run early as we didn't know how far to take it!), engine work, airbox, exhaust and ECU was about £15k-ish (total) I think. I did publish all figures when I had it done for transparency and to help others make a decision.Edited by Don1 on Saturday 16th May 11:46
Don1 said:
chris watton said:
It would be interesting to see the total amount spent to achieve the 450+bhp mark.
As mine is effectively there (ended the run early as we didn't know how far to take it!), engine work, airbox, exhaust and ECU was about £15k-ish (total) I think. I did publish all figures when I had it done for transparency and to help others make a decision.Edited by Don1 on Saturday 16th May 11:46
I am quite sure that if I decided to spend the cost of the 4.3 again, then an extra 30-50bhp would be quite achievable.
I have spent another £1k on the ACT big bore exhaust system since, but that's about it - the other bits weren't related to engine performance (rad, hoses, clutch etc)
B3NNL said:
He certainly is Chris!
...Oh sorry, my mistake, I read incontinent!
...Oh sorry, my mistake, I read incontinent!
I would love his manifolds, sold via Powers now too, I believe - but £3k!
I think that, if money was no object, I'd have them coupled with the newer all singing, all dancing MBE system - but that's £6k right there!chris watton said:
I would like the CF airbox, does it really help in releasing a few more horses, especially if the engine's been upgraded and most of the other parts (including exhaust and cats) are new?
Whenever I ask about this, I never really get an answer, which leads me to believe that the performance benefits are minimal at best, especially if there's nothing wrong with the original. I believe the original is very good to start with, and the CF version is virtually a direct copy of the original, so where are these extra benefits coming from, the additional trumpets, perhaps? Even then, the increase isn't even in double figures if compared to good standard plastic airbox, from what I have read.Still, doesn't stop me wanting one - a toss up between Readman Racing's CR box or a CF airbox....
Edited by chris watton on Saturday 16th May 14:46
Its not all down to airbox and exhaust, far from it, I`ve fitted GT cams from RND giving 40 thou extra lift on the valves, bigger injectors from Five O motorsports in the states (much cheaper than the offerings you get over here), my stainless airbox is the prototype for Joolz carbon airbox which I believe is being made by Brendan Allen, this has slightly more volume in the top half, slightly bigger bore and a little shorter on the inlet tracts, then ported throttle bodies & thinned spindles, allowing as much air to get in as possible.
Add in my hi flow decat pipes, custom made exhaust incorporating a cross pipe, no back box, all silencing now in the end cans and a good remap with Joolz and there you have it, the simple principle of a bigger cam and getting more air and fuel in, and let it out as quick as possible at the other end.
I`ll be fitting a pair of my new larger bore headers this winter and hope they release a few more ponies as well, these are made exclusively for Dom, they should certainly make the bigger cc engines breathe more easily, Dom has just fitted these onto his 5lt Sag and hope for some dyno testing in the near future.
just to add, the carbon fibre airboxes available at the moment are no different to the standard airbox, is just looks very pretty indeed.
Add in my hi flow decat pipes, custom made exhaust incorporating a cross pipe, no back box, all silencing now in the end cans and a good remap with Joolz and there you have it, the simple principle of a bigger cam and getting more air and fuel in, and let it out as quick as possible at the other end.
I`ll be fitting a pair of my new larger bore headers this winter and hope they release a few more ponies as well, these are made exclusively for Dom, they should certainly make the bigger cc engines breathe more easily, Dom has just fitted these onto his 5lt Sag and hope for some dyno testing in the near future.
just to add, the carbon fibre airboxes available at the moment are no different to the standard airbox, is just looks very pretty indeed.
clive f said:
Its not all down to airbox and exhaust, far from it, I`ve fitted GT cams from RND giving 40 thou extra lift on the valves, bigger injectors from Five O motorsports in the states (much cheaper than the offerings you get over here), my stainless airbox is the prototype for Joolz carbon airbox which I believe is being made by Brendan Allen, this has slightly more volume in the top half, slightly bigger bore and a little shorter on the inlet tracts, then ported throttle bodies & thinned spindles, allowing as much air to get in as possible.
Add in my hi flow decat pipes, custom made exhaust incorporating a cross pipe, no back box, all silencing now in the end cans and a good remap with Joolz and there you have it, the simple principle of a bigger cam and getting more air and fuel in, and let it out as quick as possible at the other end.
I`ll be fitting a pair of my new larger bore headers this winter and hope they release a few more ponies as well, these are made exclusively for Dom, they should certainly make the bigger cc engines breathe more easily, Dom has just fitted these onto his 5lt Sag and hope for some dyno testing in the near future.
just to add, the carbon fibre airboxes available at the moment are no different to the standard airbox, is just looks very pretty indeed.
Thanks for that, very interesting to read.Add in my hi flow decat pipes, custom made exhaust incorporating a cross pipe, no back box, all silencing now in the end cans and a good remap with Joolz and there you have it, the simple principle of a bigger cam and getting more air and fuel in, and let it out as quick as possible at the other end.
I`ll be fitting a pair of my new larger bore headers this winter and hope they release a few more ponies as well, these are made exclusively for Dom, they should certainly make the bigger cc engines breathe more easily, Dom has just fitted these onto his 5lt Sag and hope for some dyno testing in the near future.
just to add, the carbon fibre airboxes available at the moment are no different to the standard airbox, is just looks very pretty indeed.
So it's hotter cams and breathing, both inlet and outlet that helps?
I couldn't live with the noise of the decat pipes, though. I did fit brand new Tuscan S cats, so that I know there is as little restriction as possible (at least, as little with cats still in place)
It will be interesting to see the results of the larger bore manifolds.
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