Rod's build thread - new title - TSCi
Turbo Mini Forums

A close-up of the PCB of one of the wideband/data loggers. (sorry, bad pic).



Radiator mounting is yet to be decided... something off the brace bars but until I get stuck into the steelwork, I can't be sure....

Spending too much time on the techy stuff at the moment, but I did get a new cylinder of argon last week....

Schrödinger's cat - so which one am I ???

Schrödinger's cat - so which one am I ???

So now,

Both wideband controllers and loggers are complete and seem to be working.... (no photos tonight).

Long story with TechEdge - this was nowhere near as simple as it should have been, but both pass initial tests.

Sensors installed in the modified MG Metro manifold for initial tests. (N/A obviously for initial tests)



I'll start another thread in the "A-Series injection" section for those interested rather than clog up the "show us yours" with all the EFI issues.

Schrödinger's cat - so which one am I ???

good stuff,

have you tried the wave a flame near the sensor to get it to read trick?

Schrödinger's cat - so which one am I ???

When i was messing around with my one i used a lit gas soldering iron, you can get quite a stable reading near the stochimetric value for lpg.

Schrödinger's cat - so which one am I ???

I see that you have a MG Metro inlet manifold on there.

Do you have a Metro Turbo inlet that you could trial. I could let you have one if not.

It would be very useful to see if you get the same results with the different inlet manifolds, even at idle.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

theres a thought,

I found a manifold in the loft the otherday, looks like an osselli torque master, can pop that in the post if you want to give it a whirl.

also I think a maestro inlet could be worth a go from a mixture distribution pont of view, as they have straight runners about 6" long.

Schrödinger's cat - so which one am I ???

Schrödinger's cat - so which one am I ???

I have a turbo inlet manifold that you can have. It came in a box of bits with the Miglia. It has been attacked with a milling machine to thin the flanges and they have also milled off the water jacket. Otherwise it should work for a simple trial.

PM me you address and I'll send it over.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Its a bodge, but I have got round the discrepancy in flange thickness by making stepped heavy washers- doesn,t take long and its better than milling the flanges thinner.

yep it has the square flange, its one of those howleys that vizard loves, pics in my photobucket link below.

with the turbo exhaust manifold you're only ever going to get the turbo inlet or a home made manifold on.

Getting all the wideband stuff working, results are in the techy part of the forum.... Looks pretty anyway

Schrödinger's cat - so which one am I ???

Just boring "techy" stuff at the moment - as the ice finally melted down here I spent a few hours out in the garage/workshop building my phase sensor...



Not quite finished, I still need to cut the slot in the disk and chose the optimum position for the opto switch and wire it up, but I made plenty of swarf on the lathe at least....

Schrödinger's cat - so which one am I ???

Cool, I like it

That's nice and compact compared to mine.

I need to make another one for the Miglia although I'm thinking about putting it in the front cover with a tab on the cam pulley.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

Well, I dug this out of the shed today....



I bought it about 3 years ago - MachineMart VAT free day - bought on impulse but it should be ideal for cutting up all the aluminium sections to build the plenum and fuel injection system....

I just have to interpret the Clarke Chinese build instructions first.....

Schrödinger's cat - so which one am I ???

How did you make the flare on the downpipe to connect to the standard turbo elbow?

As per one of the earlier photos, I had a "reducer" sleeve made up that fits over the 2" downpipe at its small end and fits over the boss of the elbow at its large end - the angle of the transition is a near perfect match to the flare so I simply machined off the large end... that left me with what I needed.

Schrödinger's cat - so which one am I ???

Well I got the Chinese/Clarke/MachineMart instructions followed OK....



And so cut up a load of ally....



But it will take a while to make it look like this...

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=236430

Lots of welding ahead...

Schrödinger's cat - so which one am I ???

Looking Good.

I didn't see your thread in August as I was in the Alps at the time.

You realise that you need two injectors per port to get more than approx. 100hp and a decent idle with the Siamese code?

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I've yet to see how the siamese code works out.... remember I'm way behind you in timescale... but from what Jean has posted about the way the new "phase" sensitive version will work, it seems like it will become a fairly "normal" sequential system, albeit with variable timings and/or quantities.

I've been progressing (for a long time...) on the basis that I can achieve 280hp on my Cossie with four standard blues (and well over 300 with greens) so even if the Weber-Marelli system isn't truely sequential, I should achieve at least 140hp on my first attempt with two blues.

I haven't done all the maths yet on the flow rates but that's me, I always do things backwards....

The four injectors (staged) as you have done, does appeal, but first I just want to get it running on FI.

Schrödinger's cat - so which one am I ???

Rod, the problem is the Duty Cycle of the injectors.

Your Cossie will get away with over 80% Duty Cycle. that is that they are open for 80% of the engine cycle.

You will only get 140hp from two blue injectors if you use the 80% Duty Cycle.

Whichever way the current siamese code is set up, we are aiming to fire an injector only whilst the intake valve is open and drawing air. Hence the available duty cycle is around 25%.

I'm running four 480cc injectors on my 998, just to get 120hp once turboed.

Four "Grey" Cossie injectors may just get you 140hp.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."