122s mpg - Page 5

Rustinmotion · May 12th, 2023, 11:03

If it’s reliability and fuel economy and your engine is mechanically sound why not consider mapped fuel injection, a kit for two SU is around £1800 with all parts needed, it’s closed loop and self regulating, mid throttle cruising is where FI comes into play especially if it’s closed loop it will run the engine as lean as is safe at any throttle, rpm and map combination
You can even have two maps one for economy and one for maximum push

Othen · May 14th, 2023, 13:09

Quote:

Originally Posted by Clan

genearaly about 2% the MOT will ensure it is never more than 3.5% anyway so it can't be too far out I guess.

What a brilliant idea the idea of using a CO meter to balance and adjust the carburettors turned out to be. A stroke of genius Clan well done. See the GAM thread for details:

https://www.volvoforums.org.uk/showp...postcount=1179

Othen · May 22nd, 2023, 05:38

Using a CO meter to balance and adjust the two SU carburettors was an excellent idea, and has worked well.

Yesterday (Sunday 21st May) I had the opportunity to take GAM to the Amazon Love-in at Southwold, some 128 miles distant. The first 2/3 was fast (70MPH) dual carriageway (the A14), and the third Suffolk A roads (average speed maybe 30MPH), GAM performed flawlessly.

I am delighted to report that the 260 mile round trip (measured by GPS - the speedometer reads about 10% slow and so only showed 225 miles) took 33lts of Morrison's very cheapest E10 (8 gallons), which gives 33MPG. That is a really good improvement, and due in the main to tuning the twin carburettors properly.

salimedwardo · May 28th, 2023, 16:13

many years ago what our amazon estate did, his reply was he did not know it was just smiles per mile. I still don’t think he has worked it out 💙
________________
Nox Vidmate VLC

May 22nd, 2023, 05:38	#43
Othen Premier Member Last Online: Today 15:39 Join Date: Jan 2020 Location: Corby del Sol	Gam Using a CO meter to balance and adjust the two SU carburettors was an excellent idea, and has worked well. Yesterday (Sunday 21st May) I had the opportunity to take GAM to the Amazon Love-in at Southwold, some 128 miles distant. The first 2/3 was fast (70MPH) dual carriageway (the A14), and the third Suffolk A roads (average speed maybe 30MPH), GAM performed flawlessly. I am delighted to report that the 260 mile round trip (measured by GPS - the speedometer reads about 10% slow and so only showed 225 miles) took 33lts of Morrison's very cheapest E10 (8 gallons), which gives 33MPG. That is a really good improvement, and due in the main to tuning the twin carburettors properly. __________________ ... another lovely day in paradise. Last edited by Othen; May 22nd, 2023 at 05:45.

May 28th, 2023, 16:13	#44
salimedwardo New Member Last Online: Aug 12th, 2023 18:37 Join Date: Dec 2022 Location: boston	many years ago what our amazon estate did, his reply was he did not know it was just smiles per mile. I still don’t think he has worked it out 💙 ________________ Nox Vidmate VLC Last edited by salimedwardo; May 28th, 2023 at 17:34.

May 12th, 2023, 11:03	#41
Rustinmotion Senior Member Last Online: Today 15:55 Join Date: Sep 2021 Location: MILTON KEYNES	If it’s reliability and fuel economy and your engine is mechanically sound why not consider mapped fuel injection, a kit for two SU is around £1800 with all parts needed, it’s closed loop and self regulating, mid throttle cruising is where FI comes into play especially if it’s closed loop it will run the engine as lean as is safe at any throttle, rpm and map combination You can even have two maps one for economy and one for maximum push

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