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David Vizard

Original Poster:

99 posts

31 months

[news] 
Saturday 7th January 2012 quote quote all
Guys just so i am not quite so swamped with tech inquiries there is a load of YouTube videos on A series engines. Just put my name into the search bar and sit back for about 10 hours.

If you still have questions see you at the show in Birmingham 12th14th Mountune booth.
David Vizard

Mr2Mike

11,953 posts

138 months

[news] 
Sunday 8th January 2012 quote quote all
Thanks for posting these, that's my lunchtimes for the following week sorted!

Links to videos:
Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Part 7
Part 8
Part 9
Part 10

David Vizard

Original Poster:

99 posts

31 months

[news] 
Saturday 21st January 2012 quote quote all
Mr2Mike said:
Thanks for posting these, that's my lunchtimes for the following week sorted!

Links to videos:
Part 1
Part 2
Part 3
Part 4
Part 5
Part 6
Part 7
Part 8
Part 9
Part 10
Have you looked at them? What did you think? Was it all understandable - useful (or not) - can you give the PH posters your ten cents worth here?
DV

Evoderby

7 posts

30 months

[news] 
Sunday 22nd January 2012 quote quote all
Hi David, I bumped into your post here and just wanted to say how valuable the information contained in the 'yellow bible' and the methodology behind it has been in building my dream mini.

I think your approach is unparalleled, especially as far as articles aimed at the home enthusiast are concerned. With the help of your book (and my dad!) I was able to build a bottom end by carefully selecting and modifying the right components to be low in drag and durable, modify my own cilinder head (BTW your combustion chamber shape is rarely seen on ready to buy heads), select a powerful cam (286 scatter), along with a 45 weber on a 6" chrome plated manifold.....as well as lots of detail work such as dry build, timing the cams, cc-ing heads. Again all per your written guidance which made my learning curve as steep as possible:

The result is a very tractable engine (helped by Dta mapped ignition) which put 109 HP @ wheels through the rollers, which is what....125-130 @ flywheel (running helical gears + straight cut drops)???

Many thanks for your work and sharing it in an easy (enough) to understand manner!

Best regards,

Harald (Amsterdam)

Edited by Evoderby on Thursday 26th January 09:46

David Vizard

Original Poster:

99 posts

31 months

[news] 
Monday 23rd January 2012 quote quote all
Evoderby said:
Hi David, I bumped into your post here and just wanted to say how valuable the information contained in the 'yellow bible' and the methodology behind it has been in building my dream mini.

I think your approach is unparalled, especially as far as articles aimed at the home enthusiast are concerned. With the help of your book I was able to build a bottom end by carefully selecting and modifying the right components to be low in drag and durable, modify my own cilinder head (BTW your combustion chamber shape is rarely seen on ready to buy heads), select a powerful cam (286 scatter), along with a 45 weber on a 6" chrome plated manifold.....as well as lots of detail work such as dry build, timing the cams, cc-ing heads. Again all per your written guidance which made my learning curve as steep as possible:

The result is a very tractable engine (helped by Dta mapped ignition) which put 109 HP @ wheels through the rollers, which is what....125-130 @ flywheel (running helical gears + straight cut drops)???

Many thanks for your work and sharing it in an easy (enough) to understand manner!

Best regards,

Harald (Amsterdam)
Glad to have helped. Tell me more about your mapped ignition.
DV
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Evoderby

7 posts

30 months

[news] 
Monday 23rd January 2012 quote quote all
Hi David,

For the mapped ignition I have selected a DTA S40 ignition only ECU, set up to do away with the distributor completely (and effectively eliminate timing scatter).

Inputs are throttle position and crank position, for which a 36-1 toothed pulley is used that is read by a Ford crank sensor. The Ecu drives a Ford wasted spark coil pack, which in turn fires a set of (internal capacitor) Pulstar plugs.

The above is mapped to run BP 98 Ron mixed with tetraboost lead additive to give around 100 Ron leaded fuel.

Max load at 6000-7500 RPM gives 33 degrees BTDC, smaller throttle openings lower down the rev range give up to 42 degrees BTDC which really helps smooth engine behaviour as well as pick up. Idle is also helped by mapping a 200RPM window around target idle (1400RPM in my case) which either advances or retards timing whenever the idle under- or overshoots respectively. -BTW I'd be happy to share maps with you-

It makes for a road rocket that is very docile even in heavy Amsterdam traffic.

My next step in further developing the map is by use of a J&S safeguard (single cilinder) knock controller that allows simply adding 5 degrees advance throughout the entire map, which it will trim back per individual cilinder to prevent knock. I already have the hardware, but haven't had time to install it yet. Given independent data provided by an Ilmor employee, I expect some real world gains to be made. (See graph in link http://www.jandssafeguard.com/VampirePage/Vampire.... as well as written testimonial by Ian Whiteside at the bottom of this link http://www.jandssafeguard.com/SafeGuardTestimonial... )

I look forward to hearing your thoughts.

Best regards,

Harald



Edited by Evoderby on Monday 23 January 15:37

PGM

1,742 posts

132 months

[news] 
Monday 23rd January 2012 quote quote all
Just ordered this fabled yellow book ready for my mpi DIY rebuild.

Looking forward to hours of bedtime reading and pondering over options.

My wife is going to be delighted, I'm sure.

David Vizard

Original Poster:

99 posts

31 months

[news] 
Wednesday 25th January 2012 quote quote all
Evoderby said:
Hi David,

For the mapped ignition I have selected a DTA S40 ignition only ECU, set up to do away with the distributor completely (and effectively eliminate timing scatter).

Inputs are throttle position and crank position, for which a 36-1 toothed pulley is used that is read by a Ford crank sensor. The Ecu drives a Ford wasted spark coil pack, which in turn fires a set of (internal capacitor) Pulstar plugs.

The above is mapped to run BP 98 Ron mixed with tetraboost lead additive to give around 100 Ron leaded fuel.

Max load at 6000-7500 RPM gives 33 degrees BTDC, smaller throttle openings lower down the rev range give up to 42 degrees BTDC which really helps smooth engine behaviour as well as pick up. Idle is also helped by mapping a 200RPM window around target idle (1400RPM in my case) which either advances or retards timing whenever the idle under- or overshoots respectively. -BTW I'd be happy to share maps with you-

It makes for a road rocket that is very docile even in heavy Amsterdam traffic.

My next step in further developing the map is by use of a J&S safeguard (single cilinder) knock controller that allows simply adding 5 degrees advance throughout the entire map, which it will trim back per individual cilinder to prevent knock. I already have the hardware, but haven't had time to install it yet. Given independent data provided by an Ilmor employee, I expect some real world gains to be made. (See graph in link http://www.jandssafeguard.com/VampirePage/Vampire.... as well as written testimonial by Ian Whiteside at the bottom of this link http://www.jandssafeguard.com/SafeGuardTestimonial... )

I look forward to hearing your thoughts.

Best regards,

Harald



Edited by Evoderby on Monday 23 January 15:37
Harald,
I would really like to get full details, parts sources and some photo's (good ones) of this. Can you keep me posted on your progress here and supply the info/pics when done??? I am sure some of the attendees at my Sept Swansea University seminar would like the details here.(davidvizardseminars.com)

Thanks
DV

Evoderby

7 posts

30 months

[news] 
Thursday 26th January 2012 quote quote all
Hi David,

No problem at all, I'm sure my dad will be delighted as well to step in and help provide a detailed overview of both current status & future progress (including high res pictures). As an electronics engineer he devised the complete system outlay including knock control, so I'm sure he'll be able to add more than 2C worth!

Please let me know what email address I can best use to reach you. My address: myforumusername at hotmail d0t com *

Best regards,

Harald


  • have to be a bit cryptic here, otherwise my mail gets flooded with offers for viagra etc.

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