Just a few for now "2.2l DOHC stroker"

[lundgren420]

ok "Fred you will love this". I just pulled up a few photos of CAS Hall and Opto sensors and realized i actually have a true Hall sensor in my F8 not CAS. Tonight i will take a picture and post it but for ref it looks verry close to the example of a Hall sensor on Diyautotune's page. Tell me what you think about this.

[SixSick6]

There is no possible way that it will sound ricey with that huge turbo. And even if it does, all you have to do is pop the hood for anyone who say's it sounds like a ricer to say "Uhhh, nevermind."

[lundgren420]

Thanks Sick, i appriciate the comment.

[fredio54]

It's not to do with turbo or not, it's to do with rate of change of rpm. If you put the fe3t in a bus and floored it, the cas would provide perfect results, if you put it in a daihatsu with 155 tyres, then as it accelerates, during the gap between two cas pulses, the engine has changed rpm a LOT and you are feeding it a totally different fuel value to you would be if you were static at that load point. If you go to 36 or 60 tooth, you get updates much more often, so often that even on an extreme setup like yours or rafi or mine etc it should still be pretty much perfect at those times.

IE CAS will work sweet, except :

• In neutral WOT
• 1st gear maybe
• Loss of traction

Where it will still work, just not as well. In reality this doesn't matter all that much. Read this thread :

MSx/Extra EFI :: View topic - Lean Acceleration Behavior

Fred.

[fredio54]

Sorry, I did my "forget the following page" trick...

Hall = optical for all intents and purposes, I'm interested to see it though :-)

It's the shape and frequency of the signal that matter. They will be the same. Looking forward to the pics.

Fred.

[lundgren420]

Accuracy was the feature i was refering to on the Hall effect sensor question. The n/a model doesn't require the accuracy of a turbo engin in terms of spark events.
Here are the dissy pics.

and the Hall sensor.

and another thig that might be different is the FPR, actually on the end of the fuel rail on this model.

[fredio54]

http://i50.photobucket.com/albums/f3...4/100_4374.jpg

http://www.mx6.com/forums/fe-dohc/18...injectors.html (HOW TO use a mill to mod your fe3 rail for rx7 injectors)

They are all like that in my experience...

As for accuracy, hall is ~= optical. Both are good enough and spot on accuracy wise in terms of where the edges are, BUT, neither are good enough with respect to how many edges there are, or the fact that they are mounted on a cam shaft with spring resonances and belt slack and slop etc etc etc...

Crank shaft for accuracy, cam for COP sync. Only way to go.


Interesting to see the hall on the fX dohc though :-) cheers (next time take a picture from further back clear > large)

[lundgren420]

Well last night i fabricated the Mustange throttle body adapter, re-drilled the fuel rail for the RX7 injectors, and cut out a section of the upper intake simillar to STW. Tonight i will post pics. The only thing left to fab is the down pipe. Later.

[fredio54]

Originally Posted by lundgren420

re-drilled the fuel rail for the RX7 injectors

Not honed?? hmmmm, I hope your surface finish is superb! or you might get leaks...

Looking forward to pics.

[lundgren420]

The fitment is .002" larger than the injector, the bit was of high quality and brand new. I went nice and slow to Fred. The surface finnish was pretty nice if i dont say so myself. The correct bit for drilling out the rail is a .413" standard bit, it is a letter Z bit.

[lundgren420]

This is for a .411" RX7 injector of course

[fredio54]

.413 inches in millimeters - Google Search

10.7mm by my books, from memory they were bigger than 10.5 at the large end anyway. I realise drills remove more than the size rating on them, but...

http://www.mx6.com/forums/fe-dohc/18...injectors.html (HOW TO use a mill to mod your fe3 rail for rx7 injectors)

I guess if you got a good finish it doesn't really matter too much, though, they are supposed to have a taper in them, and you are supposed to do it with a reamer, not a drill.

Anarchy drilled his out by hand and didn't get any leaks though. I'm just going by the information I got from a highly respected fuel injection specialist at home.

I did measure all the injectors accurately, but I never posted it up at all, so I can't verify your crooked imperial measurements for you.

[lundgren420]

This is my intake modification, a little more invasive than STW’s bit along the same lines.

By lundgren420000, shot with HP Photosmart E427 at 2008-05-03
This was the installed pic of the DP and 2.0 intake

By lundgren420000, shot with HP Photosmart E427 at 2008-05-03
The money shot of the evening.

By lundgren420000, shot with HP Photosmart E427 at 2008-05-03
And the front view. The only problem was an interference fir with the Mustang throttle body throttle lever. Though this might be salvageable.

By lundgren420000, shot with HP Photosmart E427 at 2008-05-03
Enjoy.

[bpt323]

i don't dig the manifold, but im very very curious to see what kind of charts it puts out when things are done

[fredio54]

I dig the manifold, at least I will once you tidy it up a bit :-)

Love the money shot! :-)

Of all the builds coming along on all the sites I lurk yours is most anticipated by me!

Fred.