Zetec injection question

[adrianreeve]

I'll have a look for you Ronnie.

I've got a 2l Silvertop, and I'm hoping for 165-170 bhp with bike bodies and a decent exhaust (plus of course the megasquirt map). Think you may be pleasantly surprised with your expectations!

Cheers

Adrian

[Bonzo]

Thanks again Adrian

I did find a small amount of info on the MS forum, mainly guestimated flow rates based on BHP produced by the original engine.

My searching was interupted buy a new search.

Trying to find the operating range of the IAC stepper motors that I have found.

When I built the Megasquirt I opted for the stepper motor idle control as opposed to the original ford type idle control unit.

I did find a couple of stepper motors in self contained units that are ideal for the job. Rover K series unit & a Renault unit.
All I have to do now is find the tec data on them.

[spud69]

Took mine to bogg brothers yesterday and achieved 160hp at the wheels for a 2.0l blacktop, zx6r carbs + megajolt. All for £400, very pleased...

[Bonzo]

160BHP at the wheels is good going, only costing £400 too

The engine tuner that done the mapping on my eldest lads scooby is quite familiar with the Megasquirt system so loose plans have been made to give the car a final mapping once it is complete.

With a little luck I will able to get things somewhere near the mark

Bike carbs & Megajolt are my plan B if things go pear shaped with the MS & Injection.

[adrianreeve]

Ronnie

Where are you going to plumb in your IAC Valve? I was wondering about going without, as the CB900 bodies have what is in effect a choke cable that I could use instead, but it does seem abit at odds with the control you get with a mapped system to then have a 'choke'.

Hmm, not sure!

Cheers

Adrian

[thwang]

hi spud
bogg brothers are they daves sons if so has dave retired now?
thwang

[Bonzo]

Hi Adrian.

Yes the CBR throttle bodies do indeed have a wax-stat auto choke.

I have no idea how it would function in conjunction with the MS ECU though.

I have stripped the chokes from one set of bodies & think it will be easy to adapt them for the air intake pipes from the IAC unit.

I suppose they could also be blanked off & the extra intake pipes placed into the inlet manifold stubs.

I'll try & get a couple of pictures up of the IAC units I have found.

It would be a good idea to try to post a sketch or two to show how I intend to set up the IAC system.

[adrianreeve]

Ronnie, mine are slightly different I think. They are from a CB900 Hornet rather than th CBR900 Fireblade. The choke is actually a manual device, with it's own cable that could be routed to the dash. I'll have to do some more research here, as I'm guessing it worked fine with the ecu on the bike, so there must be way to do it.

Let us know how you get on with yours.

Cheers

Adrian