MicroSquirt.com read only forum (Jan.15,2018)

"tobyanscombe" wrote:
> How goes your project?

Busy doing suspension mods at the mo having been away for a week or so.
It's perfectly driveable and goes as well as a stock 1275 ever will but
I'm planning on making up a new manifold at some point soon to move the
injectors away from the ports to give the fuel a bit more chance to mix.


Posted by email.

Here you go...Still not quite right but a good stab!

No pinking on RR but there is a little bit on the road when going from cruise to full throttle and I need to get some vac advance sorted. There is now a bit of software for a Pocket PC that I can use to do more on the road (I can mount it and see where the problems areas are).

Oh, any way of getting a full 3D map? (rpm,tps,map)

tobyanscombe wrote: Oh, any way of getting a full 3D map? (rpm,tps,map)

What you posted 'was' a 3D map. Confusing I know as you only have 2 vertices.

"tobyanscombe" wrote:
> Here you go...

Couple of quick observations, squidge up the rpm bins so that you can
set up a valley at your desired RPM speed, that'll help stabilise idle.
The other is that you seem to be bringing more advance in earlier than
I have, still if that's what the rolling road says then I shall tweak
my map to reflect that. The peak values are spot on compared to mine
though so that's very reasurring. Thanks.


Posted by email.

Hi Everyone,

I'm about embark on my MSnEDIS project on my mini 1000 and was wondering if anyone could give me a few tips. I figured people in this thread would know what they are talking about.

I'm starting off getting it running on a standard 998 just incase i melt a piston or do something equally stupid. Later on i am building up a supercharged 1275 and plan on running MS, the 998 is just a experiment to see if i can get it working properly.

Now im going for a wet manifold system with 2 injectors firing 4 squirts alternating. The problem i have is i'm not sure which way i should organise this.
Should i run the TB and injectors at about the same place as the stock SU will be - as in the emerald midget system, or should i make up a plenum and run the TB and injectors on the outside of this plenum? Will this even make a difference to the intake charge the cylinders see?(i would assume the distnace between here and each valve is long enough for the pulse's to mix up into an even flow?)

Most of the turbo minis i have seen run the injectors and TB where the SU sits, without a plenum, so i guess this is the best idea?

Thanks for your ideas,
Rob

I have some pictures of my setup here. Sorry but the page is in Norwegian.

I have driven just a few km with this setup so i can't say it it a sucsess yet. But it feels alright with 1bar boost. And the spark plugs seems to have the same colour.

Dag Roar

If you use the standard manifold and put the injectors upstream of the
butterfly then that should be just fine.


Posted by email.

Do any of you mind answering a couple of questions which all relate to fuelling, specifically idle pulse widths:

Are you running port or TBI?
How many injectors are you running?
How far are your injectors from the head face?
What cc/min are they and at what fuel pressure?
and finally

What idle pulsewidths do you run at what temperatures?

Many many thanks

Dan

"danc8000" wrote:
> Are you running port or TBI?

Port injection

> How many injectors are you running?

1 in each port, ie 2 total.

> How far are your injectors from the head face?

1 inch.

> What cc/min are they and at what fuel pressure?

214cc/min @3bar

I'd not do it that way if starting from scratch. I will soon be
re-engineering the inlet manifold to move the injectors further away, 5"
is the aim.


Posted by email.

Thank you cng1, much appreciated.

Can you start me what sort of cranking pulsewidths you need to run with that setup please?