7 porter progress, Engine build Number....seven?? ....now K1200
Turbo Mini Forums

So is the plan to be able to drive this to Avon?

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1/4mile in 13.2sec @ 111 terminal on 15psi

sorry won't be at avon, deffo MITP tho.

I suggest that you use the Autotune feature to get the map somewhere near before putting in closed loop EGO Control.

Megasquirt has the facility to limit how far the fueling will move from the VE Map to match the AFR Map. This prevents overfueling by the ECU that could mask a problem. The default limit of the Controller Authority is 15% which I think is about right.

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."

If you want much more than 90hp with port injection on a five port, you need four large injectors, 2 per port, to get the fuel in the cylinder in the very short window available. Remember we are firing the injectors at a point in which it will go straight through an open inlet valve.

But on the 998 the pulse width at idle is a bit short. It runs OK with four but it improves the idle if you stage two out. These will come back in on boost on my set up.

It's possibly as much to do with my manifold design as anything else. It improved significantly once I circumsized the injector ports.

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."

Cockbiscuits......

slight setback last night,

had a brainwave on how to check the TDC marks, the plan was to attach a leakdown tester tube to no 1 with a length of clear washer tubing and use some form of fluid to give a level, the piston will displace the fluid along (up) a looong way for a small piton/ crank movement so should be Uber accurate

unfortunatly i snaped the leak down adapter i made form an old plug of in the head as i machined it too thin:(

managed to bash a torx bit into it and get it out though.

great progress though Joe. be good to see the old girl running

hiya.

i needed to see if had fooked my tdc mark with the head on.

i made up a deadstop from a plug.

by inserting an m5 connecting nut/pipe in the end (remove electrode)

turn over (by hand and very gently!) untill stuck.. mark. turn over the other way untill stuck. mark again. the TDC in is the exact middle between the markers.



edit:but then i looked at the plug angle for the 7 port head ...jeez that is horizontal.

my stop way rather long so that when used on a 5 ported the tip would be in the center of the piston to counter piston rock. that means that it stops quite a way off tdc both side wich makes it an absolute dog to do in car.

Edited by Sir Yun on 12th Jul, 2008.

That sir, is not rust, it is the progressive mass reduction system

http://aseriesmodifications.wordpress.com/

I've used the dead stop on 5 ports before, but as you say with the plug angle on the 7 port, plus the fact that the plug kind of bottoms out so you cant thread somthing in there thats thick enough not to gest bent.

jason, drop in next time your passing, i'll fire it up!

providing the neighbours windows will take it

spent most of the weekend pissing around with the idle stepper (bit of a concoction of bits!) trying to get the car to tick over,

as promised here is a short vid, I think it'd just got up to temp, i'm not 100% trusting the temp readings at the moment. still the basic start up map at the mo.

http://www.youtube.com/watch?v=dXMHI4i-WNk

Edited by Joe C on 13th Jul, 2008.

What stepper motor are you using?

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."

that looks blimmen good m 13 ,you should be proud!

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

Looks a very nice conversion, turbo looks huge.

-MINI CLUBMAN 1380 TURBO-

Cheers guys,

yes turbo is huge.... gt25v

stepper is a fiat cinguincento stepper bodged onto a cavalier throttle body.

the stepper is working, its just that the pintle did not have enogh travel to regulate the idle, i have now "modded " the pintle by soldering a nut to the end of it but now its a bit long, just needs a bit of felttling wioth a file.


interestingly, if you operate the vanes, even at idle you can hear a massive change in the exhaust sound.

Edited by Joe C on 14th Jul, 2008.

From stone cold i am seeing some disparity between the coolant and IAT sensors, is this normal? typicaly the IAT sensor is reading about 3-4 deg C higher, i was wodering if this could be down to the coolant sensor being "wet"

Ideally they should be the same but i would not worry too much about 3-4 degrees when cold.

Does the coolant temp reading seem reasonable when hot ie. around 80 degrees?

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."

Great work Joe.
Fantastic car ya got there.
So when will running in commence?And how will you be running it in? seeing as its a fresh build of an experimental engine.

Warning:Stig in Training

Cheers Paul,

the temps seem to stack up so far, I have been checking the reading on megatune against the resistance of the sensor, it seems to track to about 60 deg which is as far as I got last night before people started turning up and distracting me....

Well apart from the initial bedding of the cam the bottom end has been run before, as this is the engine that was origionally in the car, the idea being to get a map in it on this engine and then swap the engine for a fresh one, glad i did this now as this one has seen a lot of cranking over and fuel down the bores.

currently this engine is a band aid one with a std box and 2 head gaskets to drop the compression,

I have vertually all the parts for the next engine except a crank, I best get one soon and start building

erm.... i put some arches on it.

and yes I will be putting 10's on at some point.

very nice joe,
looks very cool..

wow mini 13 it looks beautiful !!! Was reading up on megatune earlier so all that talk about pulse widths and req fuel made sense which is a start. Cant wait to c a vid of the car in action !!! weldone once again !

"So wat we gonna do tonight Brain?"
"Same thing we do evernight Pinky!"
"Try to take over the world!"

Cheers,

arrrggghhh pulse widths and req fuel! i'm getting flashbacks! still it runs now lol.

super gorgeous!!!!!!!

Cheers Dave

few more jobs to do that will no doubt take longer than I anticipate, then i can get it on the road.

lets see,

Sort out idle stepper, appears to be sticking.

Wire in fuel pump relay and inertia cutout.

refit boot lid and wire up no plate light

fit no plates.

refit intercooler and sort out a pipe from the compressor to the intercooler that will allow the bonet to close properly.

do the tracking roughly.

fit seat belts,

sort out gauges in the dash, and fix down fuse box & tidy wires in that area.

fit slidy windows to doors.

fit bonnet,

sort window washers.

sort tank breathers.

sort engine breathers.

MOT.