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Re: New Engine at Last [Re: Gambalunga] #606873
07/12/19 09:29 PM
07/12/19 09:29 PM
Joined: Apr 2017
Posts: 1,127
Staffordshire
IvorMog Offline OP
Has a lot to Say!
IvorMog  Offline OP
Has a lot to Say!

Joined: Apr 2017
Posts: 1,127
Staffordshire
Originally Posted by Gambalunga
Congratulations. It is a great satisfaction to achieve such a success. Was the ECU the original Morgan ECU or something aftermarket? I am fascinated by the fact that you were able to adjust the fuel map and log the ECU which, of course, I have done with the Omex ECU.

I am also a little curious as to why you did not fit individual throttle bodies while you were at it. Omex have kits available for the Blacktop.
http://omextechnology.co.uk/tb-kits-zetec-blacktop.html


I have the Omex ECU, same as yours.

Started with one of my old Silvertop maps and modified it.

I have some ideas of my own for the intake system but for now I will just run the standard manifold and throttle body then decide what route to take.


Bob

1999 4/4 2 litre Zetec
Re: New Engine at Last [Re: IvorMog] #606877
07/12/19 09:53 PM
07/12/19 09:53 PM
Joined: Jul 2019
Posts: 1,155
L
Luddite Offline
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Luddite  Offline
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L

Joined: Jul 2019
Posts: 1,155
I really enjoyed reading your Story Bob, Most impressed with your skills and can do attitude....Sooooperb.

Re: New Engine at Last [Re: IvorMog] #606885
07/12/19 11:16 PM
07/12/19 11:16 PM
Joined: Sep 2011
Posts: 13,346
Mandello del Lario
Gambalunga Offline
Member of the Inner Circle
Gambalunga  Offline
Member of the Inner Circle

Joined: Sep 2011
Posts: 13,346
Mandello del Lario
Originally Posted by IvorMog
Originally Posted by Gambalunga
Congratulations. It is a great satisfaction to achieve such a success. Was the ECU the original Morgan ECU or something aftermarket? I am fascinated by the fact that you were able to adjust the fuel map and log the ECU which, of course, I have done with the Omex ECU.

I am also a little curious as to why you did not fit individual throttle bodies while you were at it. Omex have kits available for the Blacktop.
http://omextechnology.co.uk/tb-kits-zetec-blacktop.html


I have the Omex ECU, same as yours.

Started with one of my old Silvertop maps and modified it.

I have some ideas of my own for the intake system but for now I will just run the standard manifold and throttle body then decide what route to take.


A lot of fun isn't it. I was given an updated version of the calibration for the Duratec but the table was for different points on both the RPM and throttle opening. It had an ignition map that was somewhat different to mine. I inserted the new ignition map and then created a spread sheet with an algorithm to change the fuel map to line up with the new grid. Once the new fuel map, essentially the same but on a different grid, was inserted I did a few runs logging the ECU and corrected a couple of minor deviations. The result was a much improved mid-range. The other thing that I have been working on is the cold fuelling adjustment that gives additional fuel between 0° and 70°C, when the sonda lambda reading starts to control the feedback loop. I went for a run this morning with an initial temperature of 5°C and I have decided I am happy with the result. drive


Peter

[Linked Image]
Re: New Engine at Last [Re: IvorMog] #606911
08/12/19 10:11 AM
08/12/19 10:11 AM
Joined: Oct 2013
Posts: 6,576
Northamptonshire UK
Stringers Best Mate Offline
Talk Morgan Sage
Stringers Best Mate  Offline
Talk Morgan Sage

Joined: Oct 2013
Posts: 6,576
Northamptonshire UK
Cracking post, Bob..!

Well done, you.

Happy Christmas, matey.


Steve
Re: New Engine at Last [Re: IvorMog] #606943
08/12/19 02:54 PM
08/12/19 02:54 PM
Joined: Dec 2008
Posts: 18,586
South Yorkshire
DaveW Offline
Roadster Guru
DaveW  Offline
Roadster Guru
Member of the Inner Circle

Joined: Dec 2008
Posts: 18,586
South Yorkshire
Well done Bob.

You now qualify for a five star hands on badge.

How many skinned knuckles? grin2


DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) AR Plus 4
Re: New Engine at Last [Re: IvorMog] #606969
08/12/19 04:08 PM
08/12/19 04:08 PM
Joined: Sep 2014
Posts: 2,060
YORK
KEVFITZ Offline
Talk Morgan Expert
KEVFITZ  Offline
Talk Morgan Expert

Joined: Sep 2014
Posts: 2,060
YORK
Well done Bob...great work..better than working for a living !!!

Remember your car parked in front of the Dakota on our trip to Lincolnshire


" I LOVE THE SOUND OF THROTTLE BODIES IN THE MORNING " (ROBERT DUVAL IN "APOCOLYPSE NOW " )
Re: New Engine at Last [Re: KEVFITZ] #606982
08/12/19 05:02 PM
08/12/19 05:02 PM
Joined: Dec 2009
Posts: 758
Aerdenhout, The Netherlands
BertR Offline
Talk Morgan Regular
BertR  Offline
Talk Morgan Regular

Joined: Dec 2009
Posts: 758
Aerdenhout, The Netherlands
Impressed by your posting, quite an achievement to get everything to work!


2009 Roadster, Lancia midnight blue, cinnamon upholstery.
Re: New Engine at Last [Re: IvorMog] #606993
08/12/19 05:57 PM
08/12/19 05:57 PM
Joined: Jan 2009
Posts: 4,792
howard Offline
Part of the Furniture
howard  Offline
Part of the Furniture

Joined: Jan 2009
Posts: 4,792
How did you adjust the mixture without a means of measuring the fuel air ratio. Or did you have such a means. Were you able to check exhaust pipe output

Re: New Engine at Last [Re: IvorMog] #607007
08/12/19 07:16 PM
08/12/19 07:16 PM
Joined: Apr 2017
Posts: 1,127
Staffordshire
IvorMog Offline OP
Has a lot to Say!
IvorMog  Offline OP
Has a lot to Say!

Joined: Apr 2017
Posts: 1,127
Staffordshire
Thanks for your comments guys.

It's one of the great joys of Morgan ownership that there is such a diverse bunch of enthusiasts, all in it for different reasons but still appreciative of others efforts.

I'll post some more information after the dyno run on Wednesday and I'll fish out a couple of photo's


Bob

1999 4/4 2 litre Zetec
Re: New Engine at Last [Re: howard] #607010
08/12/19 07:40 PM
08/12/19 07:40 PM
Joined: Apr 2017
Posts: 1,127
Staffordshire
IvorMog Offline OP
Has a lot to Say!
IvorMog  Offline OP
Has a lot to Say!

Joined: Apr 2017
Posts: 1,127
Staffordshire
Originally Posted by howard
How did you adjust the mixture without a means of measuring the fuel air ratio. Or did you have such a means. Were you able to check exhaust pipe output


With the Omex ECU there is a closed loop system that gives feedback from the Narrowband Lambda sensor.

It does not give a direct reading of the air fuel ratio but it does tell you how much fuel the computer is adding or subtracting to get back to Lambda 1, i.e. the stoichiometric AFR of 14.7:1

If for example the ECU was showing minus 10% on the Oxygen Feedback (OXFB) readout, that means that the computer is deducting 10% fuel to get back to Lambda1.

That therefore means that the mixture is approximately 10% too rich in that particular load / speed site so simply reduce that mapping site number by 10% and play with it until the OXFB is as close to Zero as possible.

It's not ideal at the higher load and speed sites on the fuel grid as it is better to have a lambda of somewhere between 0.85 to 0.90 (i.e a richer mixture with an AFR between 12.5 and 13.2) for best torque and the Narrowband sensor will only read Lambda1.

However it does give a reasonably reliable indication of the mixture as a good starting point.

From there one can either work through a range of road tests using the data logging process ( which is what I think Gambalunga does) until the best overall configuration is found or use a wideband lambda sensor on a dyno to give a fairly accurate map and then refine it slightly after the road testing.

Both are equally valid but the wideband dyno system gets there a bit faster.

As Gambalunga will attest to, I think, this adds a whole extra dimension to Morgan ownership and engine tuning in general.

Last edited by IvorMog; 08/12/19 07:46 PM.

Bob

1999 4/4 2 litre Zetec
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