Mercedes W114 250 Coupe - help!

[Charles Morgan]

Gearbox plate in and shifters (that may need to be shifted) on too. The aim this week is to finish underneath (plumb in the fuel system and tank) and get the fuel rail fabricated, to which end I spent a couple of hours today working it all out with John. The space at the back of the engine is very tight for fitting the rail and associated plumbing, but we might just manage it, if not, shortening the throttle bar by about a centimetre should be possible. We think we also have a plan for the idle air control valve too.

 

[grober]

After the sad demise of the BOLINKO website found this. :bannana:

Mercedes-Benz Model 114/115

 

[Charles Morgan]

Engine turning over

[YOUTUBE]kYXjLDmucxo[/YOUTUBE]

 

[brucemillar]

Charles. On the home stretch now. Keep it coming. Great work.

Bruce

Sent from my iPhone using MBClub UK

 

[Bellow]

Engine turning over

[YOUTUBE]kYXjLDmucxo[/YOUTUBE]

Looking good. But what is that sitting atop the battery where nothing should ever sit on a battery?

 

[Charles Morgan]

An empty cuppa and the Idle control valve, which clearly should be idling somewhere else.

 

[brucemillar]

An empty cuppa and the Idle control valve, which clearly should be idling somewhere else.

I left a socket extension bar on top of a battery once. In the words of Basil Brush - Boom Boom.

Sent from my iPhone using MBClub UK

 

[Charles Morgan]

I blame me. I put it down to use the phone camera as John was underneath the car connecting the wires to get it going.

 

[Charles Morgan]

After the sad demise of the BOLINKO website found this. :bannana:

Mercedes-Benz Model 114/115

The timing is perfect.

 

[grober]

Which type of idle valve are you going to use Charles?

 

[Charles Morgan]

It's a Bosch stepper motor one, in which the amount of air released to the manifold is determined by the amount of rotation of the motor varying the aperture size. It came from a 2.5 litre Volvo. We will plumb it into the existing idle arrangements but out of sight as it is pretty ugly.

 

[grober]

It's a Bosch stepper motor one, in which the amount of air released to the manifold is determined by the amount of rotation of the motor varying the aperture size. It came from a 2.5 litre Volvo. We will plumb it into the existing idle arrangements but out of sight as it is pretty ugly.

Together with Megasquirt control that should give you a much more sophisticated fast idle control . When siting/ orienting its position care should be taken to minimise any potential fuel/oil contamination on the rotatary mechanism?

 

[Charles Morgan]

We think we have a great location for it that will ensure it is totally protected and out of sight. It's a hefty old lump to be sure, and siting it in the existing set up is an interesting challenge.

It is very enjoyable moving into the make the conversion fit and work stage, watching spannering is fun when you see a lot of progress, but getting the MS all sorted is finally engaging my brain. All the reading, research and planning over a year is now paying fruit. Chatting with John yesterday as we looked at it all and worked out solutions was great - he responds to a challenge and it helps all the discussion to be able to answer questions with a fair degree of assurance.

 

[grober]

Remind me briefly Charles of the Mega squirt model+any ancilliaries [ignition units etc ] you are talking about here. Its all been discussed before I know- you are using a Ford EDIS ignition control for example EDIS Ignition Control
but it will help me get a mental picture of all the units involved.

 

[grober]

deleted

 

[Charles Morgan]

MS2 ECU with built in MAP sensor - (we will take the vacuum using a banjo union from the place on the manifold that an auto box would, so no worries about any leaks elsewhere in the vacuum system). The priority between TPS and MAP sensor input into the map to be determined.

The ECU is set up for inline 6 with twin batch injector firing

ECU includes a switch for two fuel /ignition Maps (my plan is to set the car up on super unleaded and have a switch in case I need to fuel with lower spec) and has an electronic fan switch controlled from the coolant temperature.

Most probably Kenlowe type electronic sucking fan but that is still to be sized.

EDIS coilpacks with EDIS controller, which will have a unique feature that has been christened Bellow Jetronic (or B Jet for short)

Spartan 2 WideBand Lambda Controller and Bosch 4.9 Lambda Sensor

Bosch stepper motor Idle control Valve

Bosch CPS looking through to 36-1 trigger wheel on the rear of the flywheel

Bosch injectors (I forget the part number but will find it)

Bosch Throttle position sensor using the old TPS mounting point

Inlet air temp sensor (think it's Bosch, can't recall)

Coolant temperature sensor - a VDO one which is the only one I could find to fit the old sensor location.

All the sensors have been bought with a view to easy replacement if necessary.

Tuning to be done with MS Tuner Studio

New Bosch fuel pump from M110 with fuel filter and accumulator for the same engine.

 

[grober]

Thanks for that comprehensive reply Charles. Now have a better idea of what's going on hardware and software wise.

 

[grober]

take it you will have seen this Charles?
Maximizing Accuracy between Spartan 2 and Megasquirt | 14Point7

and this video ---- he does go on a bit!

[YOUTUBE]oRMGN2Y7amY[/YOUTUBE]

 

[Bellow]

ECU includes a switch for two fuel /ignition Maps (my plan is to set the car up on super unleaded and have a switch in case I need to fuel with lower spec)

Do you know if said switch works on the fly - or does the system have to be shut down to enable the switching?

EDIS coilpacks with EDIS controller, which will have a unique feature that has been christened Bellow Jetronic (or B Jet for short)

Yikes!

 

[Charles Morgan]

A useful article, Grober, I have yet to tackle the video owing to your observations on his verbal prolixity!

Edit I know have - I see what you mean!

I don't know Bellow, a good question that I shall ask.

Over on the Facebook W114 site, which has some very helpful individuals but an equal number of AUPO (authenticity Polizei) and morons, the first and as yet only response to my photos of the instrument panel is that the chrome ring surrounds are missing...