38 replies to this topic

[Lord Oversill]

 

Seem to be a few on here with rich running issues with the SC system?

 

Prefer too rich over too lean. 

 

Fair point, thanks

[Wazzah]

 IMG_1613A.jpg   54.22K   1 downloads

 

SC 45mm Throttle Body photo as requested

[Lord Oversill]

Excuse my ignorance.....is there any difference between blue and green injectors?

[tmsmini]

I plan to look that up. The green ones appear to be the current one provided with the kits, BOSCH 440CC FUEL INJECTORS 0280155968.
https://www.bosch-au...duct/0280155968

 

The blues are older.

This is what I found:

 

Type formula                                Injector, gasoline                                        Injector, gasoline(Green)

Flow rate 3 bar/min, N-heptane     310,0 g                                                     310,0 g

Total resistance                              14,50 Ohm                                              12,00 Ohm

Search number (KSN)                    -                                                              62695

Marketing number                          -                                                               62695

Type formula                                  EV-6-E                                                     EV-6-E

Production discontinuation             -                                                               -

Part number                                   0280156280                                           0280155968

Designation                                    Injector, gasoline                                     Injector, gasoline

Edited by tmsmini, 06 November 2019 - 02:15 PM.

[sonikk4]

I think your issue will be the injectors themselves as they are large.

 

You may want to drop down to 330cc or even smaller.

 

As a heads up, i am in the process of having a 1293 built to take a SC billet 7 Port head with their throttle bodies. After being in contact with another team member who has a very similar setup, he was having issues with the 440cc injectors that were supplied and no matter how much the map was adjusted it ran far too rich.

 

He went down to 330 injectors and this did improve the rich running issue but still ran on the rich side. I have now mine supplied with 220cc injectors to start from there and then work up if required.

 

My cam will be a Calver CST3010-PP with 1.4.1 rockers,  bladed and wedged crank, fully balanced bottom end, Omega  pistons etc etc. The fuel injection supply will be built with capacity in mind and pressure adjustable.

[tmsmini]

I am running 5 port MPi heads, but will be very interested in your 7 port results. I am wondering what the duty cycle will be on the 220 cc injectors?

Even the Bosch site does not give a lot of information on the injectors.

[sonikk4]

I am running 5 port MPi heads, but will be very interested in your 7 port results. I am wondering what the duty cycle will be on the 220 cc injectors?

Even the Bosch site does not give a lot of information on the injectors.

 

Don't wait around for me to find out about the duty cycle as i'm a long way away from having the engine ready. The bottom end is away at the moment getting a full make over so i will be lucky if i get anything done by summer next year.

[tmsmini]

I have patience. I originally started looking at adding injection along time ago by lurking on TurboMinis.

My original plan was to use Megasquirt/Microsquirt and all the original Rover MPi components. There were some incompatibilities that I could not work out and it was suggested to look at the SC system.

 

It is interesting to note that Moss Motors in the US(maybe UK) now has a Microsquirt based kit out for MGB. I may go back to trying a Microsquirt at some point as they would have a siamese ported head and IAC solution.

Terry

[Wazzah]

I don't know much about megasquirt or microsquirt.

Know heaps about SC gear.

Did a bit of research today and like SC Delta 400 they have an analogue input for MAP sensors.

There are just no available calibration mappings that I can find that can handle and apply the necessary fuel & ignition corrections for the varying loads.

SC have MPI and SPI Throttle Body Calibration Map downloads on their website and they only have one pressure measurement setting at 4080 mBar.

??????????????

It would take forever to set up for the likes of us.

All the aftermarket ECU's have adjustable mapping via software which is Throttle Position, RPM, Injector Pulse Width and Ignition Timing.

Pulse widths and advance vary via coolant and air temp sensors.

The Rover MEMS does all this with the addition of the MAP sensor which adjust all parameters above according to load.

This is were the power of the Rover MEMS lies.

Driveabilty!!

 

 

 

[Midas Mk1]

Took 3 hours to get mine mapped, first hour power mapping, next 2 all the different scenarios of load etc, it doesnt take forever.. just takes someone who knows their onions mapping wise, and knows SX tune.. and as Steve says, knows port robbing of a 5 porter. 

 

The base sc maps are rubbish to be honest, even the one they gave me with a very similar spec.

 

 

 

Need to get any kit to a decent mapper to be honest.

 

I found MEMs a right PITA. 

Edited by Midas Mk1, 08 November 2019 - 12:02 PM.

[Wazzah]

Dear Midas,

Please understand the limited resources here in Australia when it comes to SX Tune and mapping.

Most of our rolling roads are owned by diesel specialists who hot up our millions of 4x4's.

The rest are V8 men or Jap boys with no time for mini's

We never had SPI's or MPI's here and they have only received import approvals against our design rules in the last couple of years.

Most of our Mini specialists throw carbies on them as their first port of call.

We have one in our town and he refuses to even look under the bonnet of mine.

Old man scared of fuel injection basically.

Are you in a position to share your map with me.

I'm assuming you have a SC Delta 400.

The typhoon has differing firmware.

I would be happy to pay to offset your rolling road costs and gain a better starting point.

[Curley]

If you're in Australia Haltech have a map for classic mini.

[tmsmini]

I am curious about the additional control a Delta 400 would offer and if it would make a difference. It appears the calibrations files are interchangeable, but I cannot confirm this.

 

It should be possible to extract a sample MAP sensor table from another calibration file and import into one for a mini.

The first SC setup I purchased used and it came with a MAP sensor. The harness accommodated this as well. There used to be a greater variety of sample calibration files on the SC or Delta websites, but it looks like those are no longer available. Some of the older documentation I have suggests that the MAP sensor was only used in supercharged or turbocharged configurations. I would think SC could still provide a calibration to work off of.

[Indigo]

Wazzah,

I have had reasonable success with a guy in Adelaide.  He had the SX Tune software and spent a couple of hours setting up my base maps (fuel and ignition, etc).  I sorted out most of the cold running and acceleration enrichment using a wideband gauge on the road.  Engine is a mild 1410 with 50mm body and kit as supplied by SC.

What spec is your engine?  Always happy to share maps and see what others have done for idle, enrichment, start parameters, etc.

[sonscar]

My understanding is the mpi injectors are big as it runs sequential injection and has a limited injection window due to the Siamese port and firing order.If your chosen ECU has enough resolution it should tune OK with them.Personally I would like a map sensor for load.Just some thoughts.Steve..