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Stuart Dickinson

893 posts

76 months

[news] 
Thursday 22nd March 2012 quote quote all
mikey k said:
HTH
So HTH has a kit? Never heard of them!laugh

Rex Racer

340 posts

23 months

[news] 
Friday 23rd March 2012 quote quote all
I love TLAs (three-letter acronyms)! smile

yeti

6,869 posts

144 months

[news] 
Friday 23rd March 2012 quote quote all
None of those are acronyms, they are initialisations. An acronym must form a discrete recogniseable or pronounceable word, like LASER (Light Amplification by Stimulated Emission of Radiation) or SCUBA (Self-Contained Underwater Breathing Apparatus). A three letter acrynym (a TLA, which is in fact not a TLA) would be something like BIB (Boys in Blue).

Mike will not be pleased his thread is being taken over, especially with incorrect English wink

I do have some BR stuff to post up about my car (and it's 6.5 litre engine block) later to get things back on track anyway smile


Rex Racer

340 posts

23 months

[news] 
Friday 23rd March 2012 quote quote all
Well, as long as we're off topic, Merriam Webster's definition of "acronym" includes "an abbreviation (as FBI) formed from initial letters: initialism." I think the abbreviations above qualify. smile

yeti

6,869 posts

144 months

[news] 
Saturday 24th March 2012 quote quote all
Back on topic... Copied from my thread below, but posted here so Mike can answer questions about it or add anything I have forgotten. This is the ongoing work on my DB9 Volante.

Here is list of works we will complete next visit.

Shear Plates front and rear
Rear anti Roll bar, drop links and bushes
Electronic front and rear suspension dampers
Suspension electronic system manufactured and fitted
Geometry
AML button for damper control
AML button for 'sports mode'(exhaust bypass valve control).
Standard rear silencer
Exhaust bypass valve wiring to switch
Gear linkage modification for shorter shift
Heel and Toe pedal box modification
Lightweight flywheel and twinplate uprated clutch

Stage 2 is the exhaust system and we don't need to discuss that element now.

Stage 3 is the engine;
You now have a 6.5L block....!!!!!
Congrats.... As far as I'm aware you are in a club of 1 in the world.....
She is a beauty, and I will have her available for you to inspect when we do stage 1.

The remaining engine parts, some have been ordered, some we have already, some require a final sign-off meeting with supplier are;

X2 larger diameter Bosch throttle bodies
X2 increased volume and flow, with Bamford Rose and 6.5L logos, inlet manifolds
X2 higher lift inlet cams
X2 higher lift exhaust cams
X24 larger lift, larger diameter and high specification material inlet valves
X24 larger lift, larger diameter and high specification material exhaust valves
X12 forged pistons
X12 steel connecting rods
X2 head gaskets for bigger diameter bore size
Sump modified with baffles and valves and machined to return lower oil level with greater oil volume, returning lower crank windage / reduces parasitic losses"

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yeti

6,869 posts

144 months

[news] 
Saturday 24th March 2012 quote quote all
Rex Racer said:
Well, as long as we're off topic, Merriam Webster's definition of "acronym" includes "an abbreviation (as FBI) formed from initial letters: initialism." I think the abbreviations above qualify. smile
Acceptable and correct are two different things.

Rex Racer

340 posts

23 months

[news] 
Saturday 24th March 2012 quote quote all
The mods sound fantastic Yeti! Can't wait to hear the results. Any idea on the dates of completion for each stage? Will you do dyno runs after each stage?

And regarding our previous exchange, I believe "acronym" is correct (as well as acceptable) given the dictionary definition. Anyway, email me if you want to argue about it. smile

yeti

6,869 posts

144 months

[news] 
Saturday 24th March 2012 quote quote all
Rex Racer said:
The mods sound fantastic Yeti! Can't wait to hear the results. Any idea on the dates of completion for each stage? Will you do dyno runs after each stage?
Mike's plan is very much to perform dyno runs at each stage as they are critical for the business and the mods are almost pointless without them really. Nothing theoretical about the performance gains on Pommehogster's car, everything is detailed stage by stage so I would like the hard numbers for mine as well.

As to timings, the first stage will be complete by mid-April, the exhaust and inlet manifold stage before Le Mans (mid-June) and the final installation of the engine probably very shortly after that; but if I can get it installed before, I certainly won't say no wink

Rex Racer

340 posts

23 months

[news] 
Sunday 25th March 2012 quote quote all
Excellent! As I said, looking forward to hearing the results.

yeti

6,869 posts

144 months

[news] 
Sunday 25th March 2012 quote quote all
Rex Racer said:
Excellent! As I said, looking forward to hearing the results.
It's the kind of thing (taken literally) that will require a YouTube clip... Can't wait to hear what 6.5 litres sounds like squiritng out the back!

Stefanolux

87 posts

15 months

[news] 
Wednesday 28th March 2012 quote quote all
Dear Mike,
I understand that at Bamford Rose, you fit exhaust bypass valve switch in the cabin Free of Charge.
As an "over the pond" fuse 22 enthusiast, may I ask you to give me, in case "privately" to my e-mail address - stefanolux@yahoo.fr, more details about where to connect the two ends of/how fitting an exhaust bypass valve switch in the cabin: in case, I would profit of the void space behind the carpet near the LHD driver's right knee, where I already placed the remote for the gagage door opening.
Thanks for kind attention.

BamfordMike said:
Hi.

I fitted an exhaust bypass valve switch to a customer car today.
We hide the switch in the void behind the trim and carpet close to where the fuel filler switch is
I think this is a good solution because the switch is discreet yet accessible.

I took a datalog using the CAN diagnostic channels and a generic reader.

The engine speed was fixed at 3500 rpm, road speed 48MPH.

I took the datalog whilst switching between bypass valves open and closed.

The datalog shows no change in airflow across the test, torque output being directly proportionate to airflow. Also, when the valves were switched open / closed there was no reduction in the vehicle speed - conclusion; bypass valves have no affect on torque output as would be expected at such low exhaust back pressure condition.

I wonder if that what you are feeling is your perception of torque output. The exhaust note is now louder than before but this is not accompanied by any improvement in torque output or acceleration improvement. Could the hesitation be the exhaust note being 'all show' but not accompanied with any extra 'go'?

The switch to control bypass valves on or off that we install is such a neat solution giving the owner choice of either open / closed at an accessible flick of a switch. Bamford Rose offers to install this modification free of charge to any PistonHead forum member that wishes it completely free of charge during any service or repair works undertaken with Bamford Rose - it already forms part of the kit of any performance improvement offered by Bamford Rose.

Sorry that doesn't help our followers 'across the pond'.

flinder

30 posts

26 months

[news] 
Tuesday 3rd April 2012 quote quote all
Mike, Why stop at 4.7L? Can you use the Jaguar crankshaft to achieve 5,0L in our Vantage V8s?

In reading a release, one of Jag's supercharged 5.0L features is their "spheroidal-graphite cast-iron crankshaft" for their 510 horse power V8(550 as well?). Not forged or billet, this must be a less expensive alternative that is still capable of supercharged stresses.

Is this component key to achieving their 5.0L displacement? Have you looked into its application in your naturally aspirated V8V upgrades?

5.0L V8s have a spectacular performance history in North American Ford applications, especially Mustang. I have displacement envy!

AstonZagato

3,224 posts

79 months

[news] 
Tuesday 3rd April 2012 quote quote all
I thought the Jaguar 5.0l V8 engine was a completely new engine - the Aston V8 is based on the older 4.2 Jag engine. I could be wrong.

Captain Beaky

1,384 posts

153 months

[news] 
Wednesday 4th April 2012 quote quote all
yeti said:
Lots of good stuff

Heel and Toe pedal box modification

More good stuff
Mike - can you give any details on this ? I find heel and toe difficult in my Vantage so I'd be very interested to hear of possible pedal spacing and/or height modifications.

Thanks.

Thread running here

Rex Racer

340 posts

23 months

[news] 
Wednesday 4th April 2012 quote quote all
Captain, you might check out the following thread:

http://www.6speedonline.com/forums/aston-martin/22...

With these feet

3,706 posts

84 months

[news] 
Thursday 5th April 2012 quote quote all
Ive seen other variations of the pedal mod, though be aware the accelerator pedal is plastic and doesnt much like sideways forcing.

I modified the brake pedal on one car in a similar way - easier as its smaller and as its a metal able to take the load.
Simply make the r/h/s of the pedal 6mm wider. Unfortunately I forgot to remove it when we sold the car so need to make another....

BamfordMike

437 posts

26 months

[news] 
Friday 6th April 2012 quote quote all
Stefanolux said:
Dear Mike,
I understand that at Bamford Rose, you fit exhaust bypass valve switch in the cabin Free of Charge.
As an "over the pond" fuse 22 enthusiast, may I ask you to give me, in case "privately" to my e-mail address - stefanolux@yahoo.fr, more details about where to connect the two ends of/how fitting an exhaust bypass valve switch in the cabin: in case, I would profit of the void space behind the carpet near the LHD driver's right knee, where I already placed the remote for the gagage door opening.
Thanks for kind attention.
Hi.

The remote plug in device or removal of fuse 22 is quite easy, we are happy to share these details / instructions for an at home modification.

The switch we install connects directly to the Body Control Module, it is a little tricky to fit and an at home tamper with the body control module - i don't advise, just in case something goes wrong for those not used to working with the module.

What about the excellent info stated here??

http://www.pistonheads.com/gassing/topic.asp?h=0&a...


BamfordMike

437 posts

26 months

[news] 
Friday 6th April 2012 quote quote all
flinder said:
Mike, Why stop at 4.7L? Can you use the Jaguar crankshaft to achieve 5,0L in our Vantage V8s?

In reading a release, one of Jag's supercharged 5.0L features is their "spheroidal-graphite cast-iron crankshaft" for their 510 horse power V8(550 as well?). Not forged or billet, this must be a less expensive alternative that is still capable of supercharged stresses.

Is this component key to achieving their 5.0L displacement? Have you looked into its application in your naturally aspirated V8V upgrades?

5.0L V8s have a spectacular performance history in North American Ford applications, especially Mustang. I have displacement envy!
Hi Flinder.

In the quest to improve, there is no reason to stop at 4.7L with the current V8. Keeping the engine square and going to 93 / 93mm @ 5.1L or 95 / 95mm @ 5.4L is possible within the architecture. The parts would be forged / billet but the prices of these parts are comparable with current stock factory parts prices, so to create the engine it is both economically viable and possible.

If the demand was there we would create it..!

The Jag crank you mentioned cant be carried across for lots of reasons, but what an absolute beauty of an engine that crank comes from...!

We are building a 6.5L V12 for PistonHead member Yeti, the day somebody requests a V8 that starts with a 5 for their project, so it will be....

BamfordMike

437 posts

26 months

[news] 
Friday 6th April 2012 quote quote all
Captain Beaky said:
Mike - can you give any details on this ? I find heel and toe difficult in my Vantage so I'd be very interested to hear of possible pedal spacing and/or height modifications.

Thanks.

Thread running here
There is some good advice on that thread and the 6speed discussion too.
Once mastered, driving in this style is very rewarding.

For starters, the engine needs to be improved to respond to heel and toe driving, stuff that makes the engine respond in the correct way to the throttle input, without that, the whole concept of heel and toe driving is futile on a standard car.

The pedal box needs to be modified, but like 'with these feet' mentions, care should be taken.
The pedal box bolts to the footwell and when sideways force is placed on the pedal, the body will become distorted about the mounting points. This is important because the body houses 3 potentiometers which run in tracks within the plastic housing. If the voltage output from 1 of the 3 tracks is above a threshold or in error to the other 2, the safety monitor system which looks for plausible throttle pedal inputs will think there is an error and put the engine into limp home.

In standard form the throttle pedal housing can be quite sensitive to sideways force and invoke shutdowns, so with excessive sideways force with a modified pedal, an error at somepoint is inevitable.

The pedal modification made to race cars runs without this risk as the safety monitor for race cars is set inactive.

Mods to the engine to make it respond properly to a throttle input and modifications to the pedal box that allow for the throttle / brake control more easily are.... out there....

yeti

6,869 posts

144 months

[news] 
Saturday 7th April 2012 quote quote all
BamfordMike said:
the day somebody requests a V8 that starts with a 5 for their project, so it will be....
/drums fingers...

Come on, somebody?? smile

Tempted to buy a V8 just to do this with, now that would be epic...
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