V12V Bamford Rose upgrade - cat is out of the bag!!
Discussion
yeti said:
That'd be ideal for outrunning the Sweeney after you've done a blag!
Pleased with those numbers? I reckon you should be! Are these still the standard short inlet manifolds rather than long-tract DB9 ones, or are they going on with the cams?
That is only exhausts. Cams tomorrow, inlets Monday.Pleased with those numbers? I reckon you should be! Are these still the standard short inlet manifolds rather than long-tract DB9 ones, or are they going on with the cams?
George H said:
whoami said:
The best sound actually comes from the safety car these days.
I love the medical car most of all... C63 estate sliding about everywhere 
johng39 said:
I believe that they worked past midnight on Wednesday too......... nutters.
Yep, strange nocturnal habits of BR which resulted in us getting an alarm call from the AM tracking service in the middle of the night on one occasion reporting the cars whereabouts which turned out to be a test drive on the Fosseway. Fair credit to the tracking guys tho' - they had been told the car was with a garage but they still reported unusual activity (even if it did cause near heart-failure to those of us thinking it had been stolen from BR!) 
The Pits said:
Sounds very similar to standard on the video (no bad thing by the way)
Impressive gains. Should be an absolute monster now.
Peak torque seems unusally high at 6k?
Is the cut out still set at 7k?
Standard on V12V is 5750, so moved up 250 rpm. Rev limit 7500 Impressive gains. Should be an absolute monster now.
Peak torque seems unusally high at 6k?
Is the cut out still set at 7k?
. Remember it has gained over 40 Nm across the range also. For me the whole idea was not to change the noise, only make it a little louder. Mike says that the crackle on over run and in between gear changes is fantastic. I couldn't speak much as he was having difficulty due to his face muscles aching from the stupid grin.
johng39 said:
OK, just received a text from Mike.
Exhaust and Cams now
565BHP @ 6900RPM
599Nm @ 6090 RPM
Inlets scrapped and some graphs to compare.
John, do I read correctly that you are not putting the DB9 Inlet Manifolds on now? If so what was the problem/decision on that?Exhaust and Cams now
565BHP @ 6900RPM
599Nm @ 6090 RPM
Inlets scrapped and some graphs to compare.
I am now contemplating the paradigm-shift these cars will have. The gap in IMHO between a 4.7 V8V and the 6.0 V12V is hugh with a (top of head) 90bhp delta. Cant remember the torque delta, but to move another 60bhp out again.....
Cant wait...but unfortunately going to have to!
Guycord said:
John, do I read correctly that you are not putting the DB9 Inlet Manifolds on now? If so what was the problem/decision on that?
I am now contemplating the paradigm-shift these cars will have. The gap in IMHO between a 4.7 V8V and the 6.0 V12V is hugh with a (top of head) 90bhp delta. Cant remember the torque delta, but to move another 60bhp out again.....
Cant wait...but unfortunately going to have to!
Morning Guy. I am now contemplating the paradigm-shift these cars will have. The gap in IMHO between a 4.7 V8V and the 6.0 V12V is hugh with a (top of head) 90bhp delta. Cant remember the torque delta, but to move another 60bhp out again.....
Cant wait...but unfortunately going to have to!
The DB9 manifolds would probably lose 20 bhp and gain 20Nm only in the midrange. Mike likened it to a diesel character rather than what we now have. One of the things I want is a car that pulls all the way to the redline and now we have it.
Olympus said:
I wonder what BR can do for the new Vanquish, any ideas yet?
The problem with that is that they need a test car. Not sure any new 310quish owners will want to volunteer their cars for it just yet..?I would imagine that the cats and manifolds they could design could be as effective as they are here. Aston have gone with knock sensing and variable camshaft timing to make the new power as they still have to meet global emissions and noise levels e.g. that of California. BR mods are all about the engine and exhaust breathing, in and out and comply with the UK emissions regs, i.e. that of the MOT test. And as we know, there are no noise regs on the MOT
Cockers, that is a fantastic result - when do you collect? This may well be another good use of the word EPIC I think
jonby said:
Sounds amazing John
What have you done to the cats on your system ? Have the ones 'downstream' near the backbox remained untouched ? And the ones upstream in the manifolds/collectors that you have changed for the BR system, removed ?
Cats removed in manifolds, 200 cell cats to replace the 2 main ones downstream of manifolds. Get your new one booked in What have you done to the cats on your system ? Have the ones 'downstream' near the backbox remained untouched ? And the ones upstream in the manifolds/collectors that you have changed for the BR system, removed ?
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