[4wheeljive]

Silly question....... What is it ???

[JrZook]

That cap goes on the inlet side of this internal fuel pump to convert it to external use

[4wheeljive]

Well that's just a little bit cool

[ball]

4wheeljive wrote:

Well that's just a little bit cool

Will be even cooler if it works and doesn't leak

[JrZook]

That's what duct tape is for

[4wheeljive]

If you can't fix the problem with duct tape then its not worth fixing

[JrZook]

Fuel pump cap all sorted!! Many thanks to Mr Ball for his awesome handy-work!!

[ball]

now for the million dollar question, does it leak or does it seal up properly????

[JrZook]

Not sure yet. Ended up finding some 30x2mm o-rings for it but they didn't sit to nicely in the grooves and I pinched them putting the pump in . So gotta try and track down some 31x2mm o-rings which should work! BTW what is the overall OD of the grooves? 31+2+2 = 35mm?

[ball]

I can't remember where The OD of the grooves ended up. There should be a small amount of clearance in the width and the diameter from memory.

Make sure any o rings you get are fuel friendly ones.

[Moph]

Came across this thread in my travels ... thought you'd be interest Jr

http://www.twowheels.com.au/forums/view ... =4&t=28199

[JrZook]

Cheers Moph!! That's a pretty sweet link!

[Mitchie.1]

Been showing this to a few bike mates this n the verdict is your wasted on this project. Looking great man. Can't wait to see the finished result.

[Rhinoman]

The Denso bike ECUs are fairly well known, there is a lot of information here:

http://ecuhacking.activeboard.com/


Its a few years since I looked at them, there was also a lot of stuff on the GSXR and TL forums. I worked with a guy in Greece to develop a programme to reflash them (and the Jimny/Baleno ECUs) using the diagnostic port.

[Taff]

Hey Dan, a friend and I are planning to have a go at a tunable ignition only setup for my RA28 celica. Doing it more for the project aspect than anything else so making everything from scratch is no big deal. He is a mechatronic engineering student and I am doing mechanical so between us we should be able to figure it out - we also have access to a whole bunch of electronic diagnostic tools. Its a 4cyl engine and redline will be set ~8500rpm. we are planning to use a 36-1 trigger wheel mounted on the distributor drive, hall effect, TPS, atmega and coil/ignitor on plug. Going to set up a test bench similar to yours to get the coding started.

Just wondering if you have any protips, pointers or things that are a waste of time. Hoping to learn from other peoples mistakes to save some time and $$

This is the car:

[Rhinoman]

If I were Dan I'd suggest that have a look through some of the old Freescale/Motorola application notes. I'll dig out some numbers later if I remember.

[Rhinoman]

This app note is a good start:
http://cache.freescale.com/files/microc ... pplication Notes&WT_VENDOR=FREESCALE&WT_FILE_FORMAT=pdf&WT_ASSET=Documentation

[JrZook]

That's a good link Rhinoman!

Here's another one that's a bit more simplified but still has some info http://www.freescale.com/files/microcon ... AN2159.pdf

Taff:
Sounds like a sweet project and it should work quite well! Hall effect pickup will make thing wayyyy more simplified hardware wise as opposed to using a variable reluctance sensor like I'm trying.

How are you guys with the atmels and writting code? That's where 90% of the magic is hidden

Feel free to contact me and come visit to discuss the project. Always interested in this sort of stuff!

[Taff]

Awesome guys they are great. Code is no problem

Will absorb this info in the next couple days then possibly come back with some questions.

This is the main thread I come back to auszookers for so more updates!

[Taff]

Officially begun today - went to the wreckers and picked up 4x hall effect from hyundias and 2x MAP sensors from corollas, $15 all up I don't think they guy knew what they were. decided on MAP over TPS for ease basically. the vacuum ports are already there and the added bonus - we can now balance the carbs with the 2 MAP sensors hooked them up to an arduino and output looks good. Just waiting on a trigger wheel from the UK and we can start logging some data from the stock system

[Rhinoman]

Taff wrote:

hooked them up to an arduino.

Have you considered the implications of running the Ardsuino OS? as its not a real Time OS I wouldn't think that it would be ideal for an EFI system.

[JrZook]

That's sounds like a descent start!

I'm assuming that you are just using the Arduino for just having a play/look at the sensor outputs etc. From the implications as rhinoman pointed out you are best using a bare microcontroller with all the peripherals required and writing up the whole lot in C code and have direct access to the MCU ports and registers etc. What Arduino are you using atm?

An ignition system or any IC engine control is basically built upon a very tight and critical RTOS setup, hence why I asked previously how you guys were at writing code. Interrupt handling and latency becomes extremely important if you want to have an accurate and reliable system. Definitely a must for ignition timing!

Post up a pic of your sensors you gathered. I'm still looking for a nice neat hall effect sensor for my cam phase info

[JrZook]

Made up some mounts to hold the injectors and fuel rails and cleaned up the manifold a bit. So now the fuelling hardware is pretty much all sorted finally!


Now time to get cracking on the ECU side of things!

[4wheeljive]

Sweet as

[Rhinoman]

Looking good, have you tried it in the frame yet?

[JrZook]

Pretty much finished the ECU schematics off and found a nice die-cast alloy box to house all the awesomness into.
Here's a pic of the enclosure compared to the stock ignitor PCB and casing for size comparison:


So I have a bit more PCB area to play with. Should be enough I hope

[PJ.zook]

Keep coming with the updates, really interesting project this is.

[Goldnomad]

Posted: Fri Mar 18, 2011 6:55 pm

Well this may interest a few of you tech heads out there!

I think this is where you lost me!!!

Why do I feel so inadequate???

Top stuff JrZook. Looking forward to the final result.

[JrZook]

Well as luck would have it the OEM EFI sensors I've come across physically don't fit in the limited space confines of this engine.

Solution: Rum fuelled innovative thinking

What you see: An all brass bodied marine push button switch


What I see: A nice housing with a fine pitch M16 thread to mount a hall effect sensor to detect cam phase



What you see: 1/4" fuel line fitting


What I see: A perfect sized housing to mount a thermistor to be mounted in the cylinder head for measuring engine temperature


I will use JB weld (epoxy) to fix the sensors in there place once I add some nice shielded cables to them.
Should work out quite nice.

[atari4x4]

nice examples of thinking outside of the square, this thread is full of all kinds of awesome