- Wed Feb 28, 2018 4:41 am
#24628
Alright guys, this is my first post here and my first venture into the amazing world of efi, and damn am I excited. Cant wait to ditch my old carb! So here is my plan for the build. I have a 1971 VW Beetle that I recently built an engine for. It is a wayy overbuilt 1641cc engine with forged crank and rods big valve ported heads and a Scat c20 cam, which is big for a carbed engine of this size. Now I am converting to full sequential fuel and spark with help from a stock Mexican beetle EFI manifold setup which I will run with Speeduino. I am going to use a single, distributor mounted trigger system which I have already made from a stock VW distributor and a 1996 honda civic distributor.
I would like to run this all off of a board like what bradacz has made in this thread, or what NickZ has created in this thread viewtopic.php?f=16&t=376 where everything is incorporated into one board. I have no pcb design experience however so i would like to find someone with designs they are willing to share and go from there. Two problems that I am running into are 1.) I didnt notice my lathe had a 10 thou flutter in it when I center drilled the trigger wheel creating this issue with the VR sensor voltages since the teeth are not all equal distance to the sensor due to the off center hole (please note, I am not an electronics guru, I am 18 years old and am learning as I do, so I have no idea what the settings on this scope tell you, but I do know the peak voltages of the trigger wheel should all be the same)
Zoomed on one cycle with voltage set approx at top and bottom.
2.) I will be running a plenum style manifold and it seems that the two board designs I listed above are not compatible with an Idle Air Control Valve.
This project is intended to be a long-ish term so this thread may go weeks without posts or may be updated daily, Im just not sure yet, but i plan to finish by June. The main goal of me making this thread is to gain knowledge, document my progress, get constructive criticism and advise from the great speeduino community, and hopefully leave a good thread for future builders. I will be posting lots of pictures, questions, and documentation of my progress as the build goes on and I hope you all will come along for the ride!
Thank you in advance,
Hunter Stephens.
EDIT:
Due to incompetence and partly ADD, I seemed to have missed Fram's board design which seems to fit my needs perfectly. Found here: viewtopic.php?f=16&t=1099
However, I am trying to upload the manufacturing files found in his github but am not sure how to do it. If anyone can recommend an affordable pcb manufacturer and how I can upload the files, I would greatly appreciate it!
Thanks Again!
I would like to run this all off of a board like what bradacz has made in this thread, or what NickZ has created in this thread viewtopic.php?f=16&t=376 where everything is incorporated into one board. I have no pcb design experience however so i would like to find someone with designs they are willing to share and go from there. Two problems that I am running into are 1.) I didnt notice my lathe had a 10 thou flutter in it when I center drilled the trigger wheel creating this issue with the VR sensor voltages since the teeth are not all equal distance to the sensor due to the off center hole (please note, I am not an electronics guru, I am 18 years old and am learning as I do, so I have no idea what the settings on this scope tell you, but I do know the peak voltages of the trigger wheel should all be the same)
Zoomed on one cycle with voltage set approx at top and bottom.
2.) I will be running a plenum style manifold and it seems that the two board designs I listed above are not compatible with an Idle Air Control Valve.
This project is intended to be a long-ish term so this thread may go weeks without posts or may be updated daily, Im just not sure yet, but i plan to finish by June. The main goal of me making this thread is to gain knowledge, document my progress, get constructive criticism and advise from the great speeduino community, and hopefully leave a good thread for future builders. I will be posting lots of pictures, questions, and documentation of my progress as the build goes on and I hope you all will come along for the ride!
Thank you in advance,
Hunter Stephens.
EDIT:
Due to incompetence and partly ADD, I seemed to have missed Fram's board design which seems to fit my needs perfectly. Found here: viewtopic.php?f=16&t=1099
However, I am trying to upload the manufacturing files found in his github but am not sure how to do it. If anyone can recommend an affordable pcb manufacturer and how I can upload the files, I would greatly appreciate it!
Thanks Again!