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> Microsquirt build, my attempt... And while I am in there..., Remote oil filter / cooler and fuel pump front relocation
Montreal914
post Dec 22 2019, 01:53 PM
Post #1


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From: Claremont, CA
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Region Association: Southern California



After reading and reading some more, I finally decided a few months ago to challenge myself with a Microsquirt conversion. Many members here were very inspirational. (IMG:style_emoticons/default/smilie_pokal.gif) I want to thank the ones who have shared their builds and issues as they are very helpful. I hope my build can contribute to others and add to this wealth of information. I'm also aware that I might run into issues but that is part of the process.

First, a little background. A few years back I rebuilt my 2.0 due to a spun rod bearing on my last run of my first DE event with POC at Streets of Willows. (IMG:style_emoticons/default/driving.gif) While this was an unpleasant outcome, the day still remains a fantastic moment with my 914. (IMG:style_emoticons/default/smile.gif) I did the rebuild myself with all of the valuable information here. (IMG:style_emoticons/default/first.gif)

I like to think that I did things right and the outcome is a fun 2056 with mild cam, D-Jet oblige, that I have enjoyed commuting with for many years and took along the coast all the way to Monterey four times, two of which were to attend the amazing Rennsport Reunion V and VI. (IMG:style_emoticons/default/pray.gif)

One of the reasons I want to upgrade to a modern FI system is to be able to better tune the engine which is limited on the D-Jet, especially when engine displacement is increased as we know. This is the first step in my ultimate build which would be a 78x96 stroker engine. But that will be later. (IMG:style_emoticons/default/drooley.gif)

So here we go!

I bought my Microsquirt and crank trigger sensor sensor setup from Mario at the Dubshop. I like the way the trigger is engineered and it allows the installation of remote oil plumbing (full-er flow setup).

Being on a very tight budget (I know this doesn't rimes with 914 anymore) I bought all my new individual components from ebay with matching pigtail connectors to build my own harness.

VW waste spark coil pack
GM 1 bar MAP sensor
Hyundai (and others) TPS
BMW ICV
BMW air cooled motorcycle CHT sensor (used). Same M10 thread as the D-Jet CHT.

I will be reusing:
Stock green injectors, with additional resistors
Stock IAT sensor

I also bought new connectors and crimp terminals and boots for all reused stock components.

To begin the build, I elected to prepare a development harness with extra wire length and build a bread board setup. This will allow me to make sure that all components are functioning. Once the engine is running, I will rebuild the harness with the proper wire length and sleeves to ensure a clean and reliable installation.

Enough writing... On with what people want! Pictures (IMG:style_emoticons/default/biggrin.gif)

Bread Board setup:
Attached Image

1 Bar GM MAP Sensor:
Attached Image

Resistance pack for low impedance green stock injectors. The resistances are not needed if you use modern high impedance injectors.
Attached Image

Used BMW Motorcycle Cylinder Head Temp sensor with M10 thread which will screw in the stock 2.0 head CHT location.
Attached Image

Throttle position switch compatible with the stock 914 throttle body with its 8mm D shape shaft.
Attached Image

Stock intake air temp sensor with new crimp and connector:
Attached Image
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Posts in this topic
Montreal914   Microsquirt build, my attempt... And while I am in there...   Dec 22 2019, 01:53 PM
Montreal914   The resistors, as per delivered directly from Chin...   Dec 22 2019, 02:04 PM
jimkelly   looking sweet so far. :popcorn:   Dec 22 2019, 02:09 PM
Montreal914   Here I am calibrating the intake air temp sensor. ...   Dec 22 2019, 02:28 PM
Superhawk996   Curious, are you using the Dubshop Individual Thro...   Dec 22 2019, 03:26 PM
Montreal914   Curious, are you using the Dubshop Individual Thr...   Dec 22 2019, 03:33 PM
JamesM   Curious, are you using the Dubshop Individual Th...   Dec 23 2019, 05:31 PM
Montreal914   Moving on to the TPS bracket. As mentioned before,...   Dec 22 2019, 03:31 PM
Superhawk996   I started taking measurement and designing the b...   Dec 22 2019, 04:23 PM
Montreal914   Here is a snapshot of my Excel spreadsheet. I obvi...   Dec 22 2019, 03:40 PM
Mark Henry   Here is a snapshot of my Excel spreadsheet. I obv...   Dec 23 2019, 09:47 AM
JeffBowlsby   And please track/post your time committed to thi...   Dec 23 2019, 11:39 AM
HansJan   95% of what is being said here is beyond my appreh...   Dec 22 2019, 05:43 PM
914werke   Curious why did you go this way vs a new CHT ...   Dec 22 2019, 07:22 PM
Montreal914   Curious why did you go this way vs a new CHT ...   Dec 22 2019, 08:24 PM
KevinW   PM sent   Dec 22 2019, 08:19 PM
GregAmy   What is the source/application of that TPS? And wi...   Dec 23 2019, 06:16 AM
ChrisFoley   Really interested in following this as I have a cu...   Dec 23 2019, 11:30 AM
JamesM   Another thing i should add.... Before you get to ...   Dec 23 2019, 06:00 PM
Montreal914   I will try to answer all the questions but before ...   Dec 23 2019, 11:12 PM
JamesM   Based on what you said, I will not use the ICV i...   Dec 24 2019, 01:33 AM
Montreal914   Merry Christmas everyone :wreath: Personal des...   Dec 25 2019, 01:19 PM
Montreal914   Took a few minutes today to prepare the tool to in...   Dec 25 2019, 04:43 PM
Montreal914   Just came back from a short trip and this was wait...   Dec 30 2019, 11:04 PM
JamesM   I guess I will connect this one to the analog inp...   Dec 31 2019, 11:24 AM
Montreal914   I guess I will connect this one to the analog in...   Jan 3 2020, 03:47 PM
913B   Hi, Could you possibly share the amazon link? Tha...   Dec 31 2019, 01:35 AM
Montreal914   Hi, Could you possibly share the amazon link? Th...   Dec 31 2019, 09:07 AM
Montreal914   I had a few hours yesterday and today to work on a...   Jan 3 2020, 03:55 PM
Montreal914   Busy weekend! Took the family to JPL's ope...   Jan 12 2020, 10:27 PM
913B   BMW mount and rubber elbows tubes? from Where? So...   Jan 13 2020, 12:58 AM
GregAmy   I purchased a Microsquirt as well and will be tryi...   Jan 13 2020, 10:37 AM
Montreal914   Amazon and Ebay are usually my first go to places....   Jan 13 2020, 08:33 AM
913B   Amazon and Ebay are usually my first go to places...   Jan 13 2020, 11:19 PM
Olympic 914   Liking this, although I also struggle to understan...   Jan 13 2020, 09:12 AM
Montreal914   Liking this, although I also struggle to understa...   Jan 13 2020, 10:43 PM
sixnotfour   :beer2: Thats Awesome :flag1: Great Microsquirt ...   Jan 13 2020, 11:40 AM
Montreal914   A little more work done this weekend. :smash: F...   Jan 19 2020, 08:27 PM
JamesM   While I was at it making blanks, I also did one ...   Jan 21 2020, 09:44 AM
Montreal914   While I was at it making blanks, I also did one...   Jan 26 2020, 01:17 AM
Montreal914   Friday I received my 914 Rubber order :mueba: of ...   Jan 26 2020, 11:35 AM
Montreal914   A busy (non project related) month has passed alre...   Feb 29 2020, 11:51 AM
Montreal914   For the oil pump installation, I read here that Pe...   Feb 29 2020, 06:29 PM
Montreal914   I finished preparing the Hall sensor by twisting t...   Feb 29 2020, 11:57 PM
Montreal914   Well it has been a month since my last post, time ...   Mar 28 2020, 02:07 PM
Montreal914   Next step, prepare the oil lines that need to be i...   Mar 28 2020, 03:21 PM
GregAmy   :DRUNK: Eric, maybe I missed it above, but are y...   Mar 29 2020, 07:55 AM
Montreal914   :DRUNK: Eric, maybe I missed it above, but are ...   Mar 29 2020, 12:56 PM
Montreal914   I did some good progress recently with all of this...   Apr 24 2020, 08:25 PM
GregAmy   :beer2:   Apr 25 2020, 09:27 AM
PlaysWithCars   Digging the MSD crimping tool and results. I hadn...   Apr 25 2020, 11:07 PM
bohalrantipol   Good write up! I am hoping there is an update.   Apr 19 2021, 10:37 AM
Mark Henry   Good work! :) Some peeps question (get mad)...   Apr 19 2021, 10:51 AM
ClayPerrine   This is some beautiful work. If I might make a s...   Apr 19 2021, 02:38 PM
Mark Henry   He already has it set up as low impedance, I would...   Apr 20 2021, 07:43 AM
ClayPerrine   He already has it set up as low impedance, I woul...   Apr 20 2021, 08:33 AM
Mark Henry   He already has it set up as low impedance, I wou...   Apr 20 2021, 11:46 AM
GregAmy   ...and you don't need custom fuel rails or mou...   Apr 20 2021, 12:14 PM
Mark Henry   ...and you don't need custom fuel rails or mo...   Apr 20 2021, 12:48 PM
Mark Henry   Dp   Apr 20 2021, 12:49 PM
Mark Henry   What are NOS injectors worth?   Apr 20 2021, 12:50 PM
bohalrantipol   I am going to post this here as it is pretty thoro...   Apr 20 2021, 08:30 AM
GregAmy   If you dont want it here...I will delete it No wo...   Apr 20 2021, 11:44 AM
Mark Henry   Just watch your injector duty cycles, at WOT you w...   Apr 20 2021, 11:52 AM
Montreal914   Thank you for these recent posts! Yes I am lo...   Apr 23 2021, 09:02 PM


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