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Intermediate VROOM minus Distributor-> EDIS!!!

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lesingepsycho

Jedi Warrior
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A small success today was firing the engine on the EDIS setup. Gone are the days of points, distributors, static timing, bad condensors, etc., etc.

Hello to a new world of endless good times! (pun intended! :wink: )

Right now I just started it in "limp-home mode" with the straight 10 degrees timing. Happily the timing light showed a rock-solid, never waivering 10 degree spark.

This is just an intermediary step on the way to fuel injection. The TBI is sitting in the garage and I'm starting to wire up the loom for the Megasquirt. I'm still having the "smoking" issue which I can only attribute to fuel metering issues at this point. Hopefully with EDIS and EFI the smoking can be tuned out. This is all a big step towards the turbo which is also sitting in the garage waiting.

:driving:

JACK
 
Even partial Vrooms are a good thing. Good work!
 
W00T!

You probably already know this, but just in case...

Break your new engine in with a "known good" fuel system.

If you do not have one, try to borrow one. I can speak from experiance: trying to work out the kinks on an FI setup while trying to work out the kinks in a fresh rebuild can be a hair pulling and destructive experience.
 
OK, it's raining pretty solid today (even for the Pac-NW) so not much progress, but I did make it out to snap a couple of pics of yesterdays progress.

Woot is right!

All the new wiring was soldered, shrink-tubed, wire wrapped in blue to match the original stuff and fastened/zip-tied where appropriate.

My biggest concern was where I had to splice the VR sensor into the EDIS brain with the ground shielding. Seems to have worked just fine. :laugh:

JACK
 

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And while we're at it...

Here's the mock up of the TBI and stock MG Metro turbo.

The turbo is going to have to be relocated slightly for steering shaft and front engine plate clearance. But only very slightly.

JACK
 

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WOW,that turbo is cool! How many HP you think you got?
 
I'm conservatively guessing I'll be in the 100hp range. Maybe as high as 115-125 depending on just how much extra Umph I get from the camshaft and how much boost I can SAFELY run. I don't want to run too much boost because I need to get a reasonable lifespan from this engine. My desktop dyno is estimating 139hp/112ftlbs at 4psi and 147hp/112ftlbs at 9psi. I'm thinking those numbers are pretty high even with the cam profile I'm running but it gives you some ideas.

Considering this is almost a 100% INCREASE over stock, or DOUBLE the HP, I think I'll notice a slight difference! :devilgrin:

JACK
 

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I started assembling my Mega Squirt yesterday (well the sim at least). I did well I think. I only put one thing in backwards !!! Nevr done this before. Morris, I'll probably need to get a map from ya seeing we're at the same elevation.

Can't wait to see you get that think together Jack!

What's the AR on both comp and turbine on that turbo?
 
Funny you should ask.

I was doing my homework on the turbo today and by digging in to it a little deeper I found that it is a Garrett TB0329 aka T3 with a .42 A/R compressor wheel and a .25 A/R turbine wheel which should allow this thing to spool ultra-quickly.

As a result I can tell you that a few of the values in the above desktop dyno table are off slightly. At 9 psi the pressure ratio should be more like 1.54. The "flow" of this engine should be more like 140cfm @ 6800(assuming a 90% Volumetric Efficiency, based on DTDyno) and the surge flow of this compressor in that neighborhood should be more like 73.5 cfm (@ a Mass Flow Rate of 12.74 lb/min). That being said, looking at the compressor map, this should put me right in the most efficient "island" at 74%.

I'm pretty happy with this and as well I should be because I certainly don't have the extra funds hanging about to change even if I wanted to!

P.S. Good luck with the Megasquirt. Take your time, read, and read, and reread the manual (I don't know how many times it took before I really understood the EDIS to Megasquirt communication) and get a good magnifying glass. You'll need it when you're doing the transistors!

JACK
 

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Oh, and by the way, I put all yes ALL of the jumper pins on my JimStim in upside down so don't feel too bad! :wink:

JACK
 
I forgot to mention I put an LED in upside down too.

I'm still trying to figure out how to read pressure maps. They look like something that should be on the weather channel.
 
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