RSC - Blown V8 Vantage - Order yours Now

[Ice27]

Does a mouse come with this kit??

[Jockman]

michael gould said:

with regards to the mouse and the damage ......you would have thought that an Aston Martin would have been able to repel a mouse.....I would love to know how it got into the wiring loom to do the £800 worth of damage.....perhaps the OP could enlighten us

Michael, you on the correct thread here ???

[GlynMo]

Jockman said:

michael gould said:

with regards to the mouse and the damage ......you would have thought that an Aston Martin would have been able to repel a mouse.....I would love to know how it got into the wiring loom to do the £800 worth of damage.....perhaps the OP could enlighten us

Michael, you on the correct thread here ???

Is he ever? Does it matter??

[michael gould]

nope..think i might have lost the plot

[rmrmd1956]

rmrmd1956 said:

My 4.3 is supercharged and seems to work fine.

http://www.youtube.com/user/rmrmd1956#p/u/2/l4c_y2...

Yes, my car works fine. An aftermarket supercharger is not easy to integrate into a complex package like the AMV8 with its Spanish Oak PCM utilizing ford's latest torque based electronic throttle control and neural net misfire monitor. I have studied and datalogged my car extensively in order to understand its behavior. Except when I had dirty MAFs, the car has been very drivable and enjoyable, lighting up the tires easily in 1st 2nd and 3rd gear on cold roads on a cold day.(it's an American thing). I drive it almost every day. Because I've manipulated the MAF A/D counts due to the vigilance of the throttle watchdog and because the intake volume is much higher than stock, datalogs show non standard transient A/F ratio behavior. However, other than the occasional exhaust pop off throttle, the car drives normally. I have posed questions in order to understand the cars behavior as accurately as I can. I hope some day to be able to rewrite the PCM's future airflow modeling algorithm, Expected torque, demand torque, 2's complement tables to match the real world airflow in my car. If I could do that then forced induction with turbos and rebuilt motor would be a practical possibility and the sky is the limit!

[yeti]

So have you up rated any of the engine internals to go with the package?

Common sense says surely you must unless you've got sign off from a design engineer saying its not required?

[Rex Racer]

rmrmd1956, who built your supercharger? It's not an RSC unit, right?

[mikey k]

yeti said:

So have you up rated any of the engine internals to go with the package?

Common sense says surely you must unless you've got sign off from a design engineer saying its not required?

Not always
Comptech make a kit for the Honda S2000 that supercharges it at 6 psi.
It is VERY popular with thousands of conversion out there, many having done well over 100k miles with no issues.
One BIG difference with SC vs Turbo is the boost increases incrementally up to the max, unlike fixed vane turbos which are all or nothing. This means the RSC package will only delivery 2.5 psi of boost at half the rev range and 5 psi at the red line.
If you don't redline it you don't get the full boost.
I ran my S2000 for 23k miles at 12 psi boost with no internal changes and no issues what so ever.
Over 12 psi it was established that the compression ratio needed reducing and internal mods were needed.
Each engine design is different so the max boost with out internal mods will be different, so the max boost on the AM engines is ???
Lets not forget the AM V8 is derived from the Jaguar AJ-V8.
The 4.2 & 5.0 are supercharged in the XKR they apparently run at 11.6 psi, though I've no idea of the internal differences to the AM 4.3/4.7 or whether there is a difference in the types of blower.
Changing pulleys to up the boost is a common mods in many supercharged cars, I'm not sure I'd go over 10 psi at the head though.
There are two BIG obstacles to getting a turbo or blower working reliably.
Charge cooling - compressing air heats it up, it needs cooling back down, hence many cars have big radiators on the intake to cool the air, RSC now use this route, previous the 3 available offerings used water injetion. Which is not ideal and runs the risk of running out of water!
Correct air/fuel ratio - this is complicated and needs the correct monitoring on O2 levels, timing and knock, it then needs the correct feedback/control. Difficult to get right, especially if you cannot access the OEM's ECU. Again RSC claim to have cracked this where other packages used a "piggy back" ECU to "fool" the OEM ECU in to doing what they want. Not ideal

The package in the youtube link is not RSC's it is the ESX package which AFAIK is not supported in the UK.

[mikey k]

Rex Racer said:

rmrmd1956, who built your supercharger? It's not an RSC unit, right?

Nope ESX system

[3033split]

Charge cooling - compressing air heats it up, it needs cooling back down, hence many cars have big radiators on the intake to cool the air, RSC now use this route,

Hi Mikey,
Yes your correct in saying that many cars with turbos and super chargers(OEM or Aftermarket) have big radiators on the intake to cool the air charge down, i'm asmuing you mean air to air intercooling? RSC route is air over water meaning that they have two water filled radiators one under the supercharger to take heat away from the intake charge and one at the front of the car for cooling(size unknow), linked via pipe work to a pump and header tank, hence large water tank on the right side of engine bay with pipes coming from both sides of the charger unit, same desgin of system a DB7 I6 has.
not an efficient system in hot climates or traffic and a route taken due to package constraints.

[mikey k]

3033split said:

Charge cooling - compressing air heats it up, it needs cooling back down, hence many cars have big radiators on the intake to cool the air, RSC now use this route,

Hi Mikey,
Yes your correct in saying that many cars with turbos and super chargers(OEM or Aftermarket) have big radiators on the intake to cool the air charge down, i'm asmuing you mean air to air intercooling? RSC route is air over water meaning that they have two water filled radiators one under the supercharger to take heat away from the intake charge and one at the front of the car for cooling(size unknow), linked via pipe work to a pump and header tank, hence large water tank on the right side of engine bay with pipes coming from both sides of the charger unit, same desgin of system a DB7 I6 has.
not an efficient system in hot climates or traffic and a route taken due to package constraints.

True
Same set up as the Comptech package I have used before.
Had I added ALL the detail to that post I think a few would have

[George H]

One thing I still don't quite understand is why anyone would do this instead of buying a V12V.

[mikey k]

George H said:

One thing I still don't quite understand is why anyone would do this instead of buying a V12V.

From my perspective because there is no V12V roadster, I'm comfortable/experienced with aftermarket SC installs and risks
If I had a 4.3 this is £40k cheaper than buying a V12V
Though if I had a 4.3 I'd probably let Bamfords lose on it

[George H]

mikey k said:

From my perspective because there is no V12V roadster, I'm comfortable/experienced with aftermarket SC installs and risks
If I had a 4.3 this is £40k cheaper than buying a V12V
Though if I had a 4.3 I'd probably let Bamfords lose on it

The roadster is one reason I could understand, and perhaps the sportshift gearbox, but financially it doesn't make any sense. I can't imagine it being easy to shift on, plus there would be a lot of messing around getting it to work properly in the first place. Financially it doesn't make a right lot of sense. You could get an 05/06 V8V for £35-40k, say £25k (?) on the supercharger, whereas for £75k you can pick up an early V12V, with CCM brakes etc which would cost at least £10k to put on a V8V I suspect.

[toohuge]

There are two reasons why I can see someone carrying this modification out.

Firstly, if the owner has an emotional bond with that particular car/memories within that car but wants to enhance the performance.

Secondly, dynamically the V8 may be different than the V12 due to the decreased weight over the front wheels. Yes the supercharger installation will add some weight but not as much as the V12.
Chris

[michael gould]

George H said:

One thing I still don't quite understand is why anyone would do this instead of buying a V12V.

Some people just like adding bits to their cars....Yeti is the perfect example.....he spends oodles of money on his cars and good luck to him.....but I’m with you gorgeous....I’d rather spend the money on a DBS or V12V

[Rex Racer]

It does make sense to supercharge a 4.3 instead of buying a V12V if your only concerns are present cost and power. That said, I would rather (and do) have the V12V. I'd rather have an original Aston than one heavily modified with aftermarket parts. Mild intake and exhaust mods sure, but aftermarket supercharging is too much for me.

[yeti]

michael gould said:

Some people just like adding bits to their cars....Yeti is the perfect example.....he spends oodles of money on his cars and good luck to him.....but I’m with you gorgeous....I’d rather spend the money on a DBS or V12V

Thank you Michael You are correct, some people just like to tinker in the belief thay are improving it. One man's improvement is another mans ruination however.

Much like the roadster analogy, mine was an availability issue - there are no green manual Volante DBS' that I have ever seen and ordering one wasn't an option due to cost. My car cost me £50k, at the time the cheapest second hand DBS Volante out there was still £130k, would have been manual and not in my preferred colour. I like to make my car as ood as it can be, not have it as good as Aston could make it and still return a profit. My car will probably owe me £90k in the end but spread over 2 years while I have had huge enjoyment from it. I also never intend to part with it. £90k is close to DBS territory, but bear in mind if I had a DBS I'd be doing the same thing to it - Sarah would have done the interior, and Bamford Rose the engine so I'd have saved cash on brakes and suspension, bonnet and wheels, but that's it!

In addition, the DBS isn't >that< fast or unusual, My car is/will be both. It is unique, interior, exterior and mechanically it is different in every way. According to Mike, before BR have even started the work my DB9 is almost as quick as a DBS with the few mods I have made. The DBS was never worth the premium unless you really wanted the look.

However, if a supercharger was offered for the DB9... I don't think I would be interested when options exist to make that power without it or roughly the same cost and a guarantee of perfection. It feels like cheating, it's like the athlete who takes steroids rather than just works hard for the same results! Yes Aston has previous with supercharging but it's to drag power out of dying/aged engines, the DB7's i6 was a Jag saloon unit!

Better SC than turbo, but even so. Just my 2p

[Stuart Dickinson]

George H said:

The roadster is one reason I could understand, and perhaps the sportshift gearbox, but financially it doesn't make any sense. I can't imagine it being easy to shift on, plus there would be a lot of messing around getting it to work properly in the first place. Financially it doesn't make a right lot of sense. You could get an 05/06 V8V for £35-40k, say £25k (?) on the supercharger, whereas for £75k you can pick up an early V12V, with CCM brakes etc which would cost at least £10k to put on a V8V I suspect.

If you paid £25K you would get two and enough money back to take the missus on a nice holiday!

[yeti]

Stuart Dickinson said:

If you paid £25K you would get two and enough money back to take the missus on a nice holiday!

Do you reckon GB£10k delivered and fitted in Briatin then Stuart??