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Dolomite PI.....?
http://forum.triumphdolomite.co.uk/viewtopic.php?t=30189		 Page 2 of 3
Author:  alolympic [ Sat Jan 02, 2016 6:22 pm ]
Post subject:  Re: Dolomite PI.....?
Interesting stuff, but are you really doing this to improve fuel economy?
It would take 100,000's miles to offset the cost surely. I can understand doing it for the challenge, or for performance, but to save on fuel?.....
Author:  sprint95m [ Sat Jan 02, 2016 8:23 pm ]
Post subject:  Yip...
To improve economy, that is the idea behind the challenge.


At 40 mpg, with each gallon costing £4.50 that equates to (450/40) 11.25pence per mile.
At 50 mpg the cost is 9p per mile, a saving of 2.25 pence.

So every 100 miles you could save £2.25, every 1000 miles £22.50 and so on.

Yes, I'll never make the money back, in fact the car is probably worth less than the conversion :)
................but at least I don't have to contend with depreciation.



You learn from trying things.

My next door neighbour is rebuilding an Alfasud. He is going to convert it to fuel injection but this is hopefully straightforward enough
because he has bought a whole Alfa 33 engine c/w the injection bits and pieces (including the wiring loom).
We will be finding out......




Ian.
Author:  paulsprint [ Sat Jan 02, 2016 10:10 pm ]
Post subject:  Re: Dolomite PI.....?
Nothing in my case to do with economy. My right foot is far to heavy for that. For me it's all about the the drive ability. The car was running 2" sus. I messed and messed about with them. Great at very low throttle or flat out. But crap around town. There is not a needle about that would fix it. All the one I tried where either to lean at the flat out or two rich and idle and mid. Plus you can see what the fuelling is doing but you can not really change it because you have no idea what section of the needle you are using and therefore where the needle needs to be thicker or thinner. Then you also have to take into account the springs. Now they will change everything. All in all I came to the conclusion that with injection I can see what the fuel is doing via my wide band o2 sensor and change the fuel map to meet what it should be with with my laptop. And it will if all goes well runn much better.
Author:  sprint95m [ Mon Jan 25, 2016 7:55 pm ]
Post subject:  Okay an update....
I have bought a TR7 EFI inlet manifold and a Ford Focus throttle body.



Image
I bought this from California, postage and import duty was more than the £61 purchase price!

Image
This Ford throttle body is a simple design making installation easier.



I am thinking of using a Dolomite Sprint air box as a plenum. First I need to measure its volume......





Ian.
Author:  lazeruspete [ Wed Jan 27, 2016 4:47 pm ]
Post subject:  Re: Dolomite PI.....?
Quote:
I'm in the process of converting mine. Using megasquirt ecu. The loom and ecu have been in the car for years running the ignition only. Will be finished later this year


Actually what I believe you have installed there is a child! :P
Author:  jplm93 [ Mon Aug 13, 2018 6:24 pm ]
Post subject:  Re: Dolomite PI.....?
Hi All

How far have people got with EFI on their dolomites?

I am planning on using a sprint as my daily in the near future and would like to improve the drivability and fuel economy. To this end I am thinking port fuel injection and spark control. I am a design engineer at an automotive company and as such have access to many 'used' engine parts and I would like to use as many of these as possible. The specs I'm currently thinking are:

- Standard sprint manifold with welded bungs for the injectors as far down the runners as possible
- Twin throttle bodies, potentially rover K series as readily available with position sensor and roughly the right size
- Injectors and fuel rail (modified) from work
- Speeduino ECU utilising MAP sensor and a wide band lambda in exhaust for 'auto tune'
- Trigger wheel and crank sensor on distributor (spark to be run through distributor)

Does anyone have any suggestions for fuel pump or any other part of the set up?

Cheers

James
Author:  Toledo Man [ Mon Aug 13, 2018 8:11 pm ]
Post subject:  Re: Dolomite PI.....?
How about using a fuel injection system from a Saab 99? I believe it was the Bosch L-type Jetronic.
Author:  new to this [ Mon Aug 13, 2018 10:39 pm ]
Post subject:  Re: Dolomite PI.....?
Quote:
Hi All

How far have people got with EFI on their dolomites?

I am planning on using a sprint as my daily in the near future and would like to improve the drivability and fuel economy. To this end I am thinking port fuel injection and spark control. I am a design engineer at an automotive company and as such have access to many 'used' engine parts and I would like to use as many of these as possible. The specs I'm currently thinking are:

- Standard sprint manifold with welded bungs for the injectors as far down the runners as possible
- Twin throttle bodies, potentially rover K series as readily available with position sensor and roughly the right size
- Injectors and fuel rail (modified) from work
- Speeduino ECU utilising MAP sensor and a wide band lambda in exhaust for 'auto tune'
- Trigger wheel and crank sensor on distributor (spark to be run through distributor)

Does anyone have any suggestions for fuel pump or any other part of the set up?

Cheers

James
James

I was going to use a sprint manifold and weld bungs for the injectors,but i was going to weld them at an angle and change the manifold bolts for studs
ive had a trigger wheel fitted to the crank pulley and sensor mounted by the timing quadant
the fuel pump, im going to use,is a pump from alfa it fits inside the tank lucky it has a built in level sensor,so im doing away with the original sensor,opening up the hole to fit the new pump,wiring of the pump was straight forward i tested it useing an old temp gauge i had

where your thinking of using twin throttle bodies,im useing just a single one from an Omega
Dave
Author:  sprint95m [ Tue Aug 14, 2018 8:58 am ]
Post subject:  Okay........
Quote:
change the manifold bolts for studs
That will only be practical if you do away with the water pump bypass pipe.




Ian.
Author:  Carledo [ Tue Aug 14, 2018 9:26 am ]
Post subject:  Re: Dolomite PI.....?
Jenvey are now making throttle bodies with injectors that mimic DCOE Webers in both shape and fitting, so just a pair of these, a Weber inlet mani and a Megasquirt or Emerald ECU and you're good to go. Not the cheapest solution though!

Using the KISS principal, I just installed a fuel injected Vauxhall motor with all ancillaries. It's a Bosch Motronic, simple and reliable as anything and comes from some cars with it's own discrete loom which makes the wiring side childs play to install. I have several spare sets of this Motronic kit with looms, ECUs, manifolds, fuel rails, injectors, throttle bodies, tps, coils, etc, etc, So far, i've not had to use ANY of my multitudinous spares, so I'd be quite willing to part with a kit. I'm told it's not too expensive to make the stock ECU programmable!

On fuel pumps, I use a remote pump rather than messing about with an in tank pump. Mounted low as possible in the car, I have even got away without needing a swirl pot these last 8 years. This one is less than £17, ebay, item no 361025345369.

Steve
Author:  sprint95m [ Tue Aug 14, 2018 11:52 am ]
Post subject:  Okay........
Having spent a lot of time studying installations as detailed in forums and blogs.....
Quote:
I was going to use a sprint manifold and weld bungs for the injectors,
I doubt a standard Sprint inlet manifold is suitable due to its siamesed design.

To this end, I have bought a Mangolesti inlet manifold (for Webers) which will accept throttle bodies.



My own Sprint project has fallen behind schedule, I was intending to paint it this summer but that isn't going
to happen now. I was looking at doing the EFI installation over the winter but now am thinking I'll leave it until next Spring
at the earliest.
Whilst a D.I.Y. solution has a certain appeal to me, I am swayed to buying a properly engineered complete set-up,
the one I have in mind is from Omex. Obviously such a thing as this costs considerably more than a D.I.Y. solution,
maybe a £1000 more?



Ian.
Author:  jplm93 [ Tue Aug 14, 2018 6:01 pm ]
Post subject:  Re: Dolomite PI.....?
When you say the manifold is siamesed surely if you place the injectors far enough down the runners you will be ok? The injectors I am planning on using have twin cones so as long as I orientate them correctly I should get a good spray to the back of the inlet valves.


Image
Author:  Carledo [ Tue Aug 14, 2018 8:45 pm ]
Post subject:  Re: Dolomite PI.....?
Quote:
When you say the manifold is siamesed surely if you place the injectors far enough down the runners you will be ok? The injectors I am planning on using have twin cones so as long as I orientate them correctly I should get a good spray to the back of the inlet valves.


Image
So i'm guessing your plan is to put a K series throttle body on the Sprint manifold in each spot previously occupied by a carburettor, hence the need for 2 TBs?

Surely a design like that needs some sort of plenum chamber to work?

Steve
Author:  James467 [ Wed Aug 15, 2018 11:51 am ]
Post subject:  Re: Dolomite PI.....?
You lot are creating too much work for yourselves! :lol:

It's simple...

Weber inlet manifold
Jenvey throttle bodies
Emerald or Omex ECU
Electric fuel pump with swirl pot in the boot next to the spare wheel.

Done! 8)
Author:  Carledo [ Wed Aug 15, 2018 9:10 pm ]
Post subject:  Re: Dolomite PI.....?
Quote:
You lot are creating too much work for yourselves! :lol:

It's simple...

Weber inlet manifold
Jenvey throttle bodies
Emerald or Omex ECU
Electric fuel pump with swirl pot in the boot next to the spare wheel.

Done! 8)
I refer you to my post about 4 up from this one which says exactly the same thing!

The Jenveys are probably the easiest way to EFI, but they'll leave a hefty hole in your wallet, my guess is, by the time you've bought your ECU and all the other bits and bobs, it'll be over 2 grand! I had the Carledo on the road for £600 (including buying the car in the first place) Yeah i'm a cheapskate, not all of us have endless money to throw at our cars and have to use enginuity instead! Anyway, it's more fun to make something work yourself!

Steve
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