That is true Joey the derv is tunable to V6 power levels, but how much do you have to spend to get it to those levels?
Your car is a beauty and I would love to try one like yours or Damien's, but from what you've documented on here that hasn't come cheap and would be out of reach even for us V6 owners!
When you take into account all the map's, new hybrid turbo's, egr and manifold work plus the seemingly never ending clutch replacements (especially in Damien's case) I bet the savings in fuel don't even begin to cover it.
The derv still has a cambelt, oil cooler etc and still requires servicing every year. So I would agree that If you just kept it to say a moderate map only, then the derv would be the best all rounder for someone doing 12k plus a year.
But to get one to standard V6 power levels (247bhp)requires imo a lot of money and dedication that will quickly eat up any savings in fuel. That said though I can only admire what you and Damien have done to create absolute weapons of cars that would leave my standard V6 behind easily no doubt.
all good points Warnie..
and thanks for the compliment..
as a counter argument though I will list the work to make the point that only a small portion of my mods are diesel specific...
1) Quaife (advisable on any GT bar the JTS and TS they don't have the torque to warrant it) and on both the 1.9 and 3.2 stops exploding stock diff.
2) suspension upgrades , IMO required on any variant to unlock the handling potential of the chassis. I opted for B12's and an eibach ARB kit...would have done the same had I owned a 3.2.
3) De-cat down pipe ,again required on both the 3.2 and the 1.9 if you really want to unlock the engines potential, 3.2 also benefits from the CF2 manifold mod..again would have done this on a 3.2 and the 3.2 also really needs a wizard or scorpion. not so the 1.9 as the stock exhaust is not overly restrictive.
4) oil cooler replacement ( I have not done this yet as mine is fine but would be required on both at some point as they both suffer from rusting unions.
5) hybrid turbo ..I did mine at 100k and refurbed my old turbo..cost was under £500, lets call it £1000 with the mapping and removal of old turbo and fitting of new one. derv specific so point conceded on this modification.
6) FMIC..point also conceded on this, kit is £300ish and easy to fit..
7) swirl flap delete which was done along with cambelt so no extra labor charge, admittedly this about timing and catching it at the first or second cam- belt interval. to avoid an extra £300 spend
8) re-map, well I would have done this too if I owned a 3.2! but admit again it's a quicker car out of the box so optional.
9) egr delete, diesel specific but only £150..
10) clutch and flywheel..well I did mine at 76k when the the EGR delete and first re-map killed it. still going strong 35k later..although I will have to fit the GTA clutch and smf conversion to push the map and turbo to the full potential. however I would argue that a clutch replacement would be required on a 3.2 at the same mileage and the upgrade is cheaper than an OE DMF and clutch kit so the same as a 3.2 really.
11) brakes, performance pads and race fluid, again advisable on any GT you want to drive hard although the 3.2 does come with the 4 pot calipers so are up to the job without upgrades...I will concede this point as well.
So.....75% of the work I have done is applicable to both engine variants, in fact my spend would have been very similar whilst paying out MUCH more on fuel and a bit more on road tax in addition to the modding costs.
if a 3.2 had needed headgaskets or a top end rebuild it would have cost a huge amount more than my turbo and diesel specific work, ask DNG and shimmery Dolmeo , it is becoming more obvious that the 3.2's do need top end work at some point. almost like the dervs need de-flapping and re-turbo-ing at some point.
so on balance I think the diesel will end up being cheaper in the medium to long term if your mileage is above the magic 10k mark.
and finally..it has cost Damien and I more because we went first! things were tried that didn't work in both of our cases, lessons have been learnt and getting a 1.9 GT to 240 BHP is now relatively straightforward. Autolusso's hybrid turbo replacement and mapping is £1000, GTA clutch and SMF conversion is £550. uprated brake pads and fluid is £120 Quaife is £600 fitted.
suspension upgrades are optional and would apply to any variant.
given you can now buy a CF4 JTDm for £1500 ,lets say all the upgrades could be done in one go for 3.5k, giving you a hell of a machine with fantastic economy for 5k.
at the end of the day though they will never be or sound like a Busso, we know this but in my situation where I have parking for one car only, there was only one sensible choice..and my GT gives me all things, it is incredibly flexible and has proved to be fantastically reliable, very economical and is as happy cruising at a steady 70mph on the Mway as it is being driven in a ''spirited manner'' on A and B roads.
one of these days though when we move and have room for more cars I will have a V6 in the family...
p.s forgot cosmetic stuff and interior and ICE upgrades, still applicable to both engine variants and would have done on any 3.2 I owned.