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  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Sun Jul 15, 2018 11:38 pm   Subject: The Green 931 -my first transaxle ever (resurrection thread)
I'm just gonna have lunch now, but I plugged my scope already to input and output of the ignition module. I'll let you know later what I figure out, but this module is already on my list of suspects : ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Sun Jul 15, 2018 5:40 pm   Subject: The Green 931 -my first transaxle ever (resurrection thread)
I've done ignition system based on distributor to EDIS conversion with MegaSquirt before. This is really stable setup - strong spark, easy to diagnose, and you can advance/retard your spark whenever y ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Sun Jul 15, 2018 8:00 am   Subject: The Green 931 -my first transaxle ever (resurrection thread)
The DITC:

So when my engine started, either cold or warm it was misfiring, well it still is.
I had this feeling there is something wrong with DITC already, but today it was 100% hit. Or maybe it's ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Sun Jul 15, 2018 7:23 am   Subject: The Green 931 -my first transaxle ever (resurrection thread)
So I spent c.a. 10 hours in garage today
Replaced 5 elbows and some lines to brand new silicon ones.

But... First things first - CIS.

I've removed AFM to see if it works as intended:
...
  Topic: Stage Next...
kondzi

Replies: 111
Views: 22360

PostForum: Performance Upgrades   Posted: Thu Jul 12, 2018 8:54 am   Subject: Stage Next...

https://i.imgur.com/vlg6fRx.png



Well I admire you for tuning CIS with Megasquirt
Any kind of spike like that should not happen. It goes lean, while normally it should go rich after closin ...
  Topic: Stage Next...
kondzi

Replies: 111
Views: 22360

PostForum: Performance Upgrades   Posted: Thu Jul 12, 2018 8:42 am   Subject: Stage Next...

No, I don't have the VEAL, VE Analyze Live, "autotune" features of the paid versions of the megasquirt software yet.. It's like $130 for the full paid software upgrade..

I know I should ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Wed Jul 11, 2018 5:12 am   Subject: The Green 931 -my first transaxle ever (resurrection thread)
I always tend to check one thing after another. That way you can easily spot if something has influence on the rest of the system. Whatever "the system" is
Methodological, takes time, bu ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Wed Jul 11, 2018 5:07 am   Subject: The Green 931 -my first transaxle ever (resurrection thread)

1. Valve closed, fuel pump running - c.a. 5.5 bar
2. Valve open, cold, fuel pump running - c.a. 2.0 bar at 20 deg Celcius outside
3. Valve open, warm, fuel pump running - c.a. 3.7 bar
4. From co ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Tue Jul 10, 2018 7:07 pm   Subject: The Green 931 -my first transaxle ever (resurrection thread)
Other things that just came back to my mind, not related to CIS
- When short circuited fuel pump for first time after 20-30 second fuel line between fuel pump and fuel pressure accumulator went in ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Tue Jul 10, 2018 6:47 pm   Subject: The Green 931 -my first transaxle ever (resurrection thread)

Don't have a photo of that, but the bi-metal spring was mounted up-side down.


This is my second attempt. After first one and few minutes operating the engine was flooded and died.

RPM jumps ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Tue Jul 10, 2018 7:59 am   Subject: The Green 931 -my first transaxle ever (resurrection thread)
Old rule says, if the engine won't start, either lacks fuel or spark.

I'm sure there is plenty of fuel in my engine, so I'm beginning to track spark.
At that stage I knew there is kind of ECU cont ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Tue Jul 10, 2018 7:42 am   Subject: The Green 931 -my first transaxle ever (resurrection thread)
This is my second attempt. After first one and few minutes operating the engine was flooded and died.

I removed spark plugs and revved the engine with starter motor to empty cylinders from excess ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Tue Jul 10, 2018 7:29 am   Subject: The Green 931 -my first transaxle ever (resurrection thread)
Ok, so I have the settings for my cold and warm pressure, system pressure and control pressure.

I've set up these according to the WUR number as in this data sheet:
http://old.classicporsche.pl/gr ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Tue Jul 10, 2018 4:31 am   Subject: The Green 931 -my first transaxle ever (resurrection thread)


If you don't have all of that maybe your head is from a car that did or something..

Well for sure there is something messed around with that engine. Just to mention I have the early shaped pist ...
  Topic: The Green 931 -my first transaxle ever (resurrection thread)
kondzi

Replies: 30
Views: 619

PostForum: 931 Tech.   Posted: Tue Jul 10, 2018 4:22 am   Subject: The Green 931 -my first transaxle ever (resurrection thread)
So I got a replacement fuel distributor from my friend, and I was so happy all should go fine now. Spraying patterns like in catalogue, even amount of fuel in all four injectors...

http://old.class ...
 
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