Racefiend's CA Legal 1992 LS Swap Build Thread

[AussieHJCruza]

Subscribed...good work @Racefiend

 

[Broski]

I have dozens of wiring schematics and connector pinouts I made which I'll post up once this thing is running and I verify everything is working.

Here's the progress so far. Made my integration harness which plugs into the LS wiring on one end, and connects to the FJ at the other end on IH1 and IH2.

View attachment 3315802


Next I need to mock it up, do some finishing taping, and loom it.

Nice work, looks really clean !

 

[Racefiend]

After quintuple checking all my diagrams, I finished up the last harness for the swap:

Just kidding.

This harness runs from the last one, through the dash, and over to the integration module and DLC connector. Plus a few other doo dads I added.

Finally the wiring is done!

Pro tip - Don't take a multi month long hiatus in the middle of doing wiring. I think I doubled my grey hairs.

Time to move on to fuel.

 

[bski90]

One of my favorite LS swap builds I've read on any forum. I've LS swapped a few BMW's so I understand the pains of doing the swap, always worth it tho!

 

[ceylonfj40nut]

Next was installing the second marks4wd adapter plate:

View attachment 2971163

Followed by the output shaft extension:

View attachment 2971164

Next I needed to prepare the 3rd and final adapter. I had to install the dowels into the adapter. I heated the dowel holes to about 400 degrees to make it easier to get the dowels in. I also installed the oil seal into the adapter:

View attachment 2971165

I then drove the brass plug into the hole for the speed sensor. You don't need to use this hole, as the reluctor wheel on the 4l60 is further forward, and you use the speed sensor hole on the 2nd adapter instead:

View attachment 2971166

I then installed the final adapter to the transmission:

View attachment 2971167

What was the cut length after the first Marks adaptor piece was bolted on? I will be getting to this next. Excellent work Sir!

 

[Racefiend]

What was the cut length after the first Marks adaptor piece was bolted on? I will be getting to this next. Excellent work Sir!

I don't remember what it was, but I believe it's in the instructions from Marks. But that pic shows 132.63mm on my caliper, and I just went and measured that straight edge and it's 37.37mm wide, so 132.63 + 37.37 = 170mm. Math to the rescue!

 

[NotSoFast Lane]

I am guessing this is running and driving now? Thank you for this thread!

I had thought my journey with my 80 was over but when I told my friend I was selling it I never felt like a bigger POS. This thread has been a beacon of hope.

My drivetrain is now out and sitting in the driveway...

Signed - Hot AF in PHX

 

[pace it]

@Racefiend

Any updates on this project? It's been fun to read and huge resource in preparing for my own '92 LS swap.

 

[Howardkats]

Next I needed to fit the fuel tank pressure sensor. I could have just teed the charcoal canister hose and ran a hose the sensor, but that's janky. I cut the sensor hole from the top of the GM fuel pump, and drilled a larger hole on top of the fuel pump hanger.

View attachment 3310685

Then I welded the GM piece onto the hanger. Installed the grommet and sensor. Perfect fit.

View attachment 3310686

Next was dealing with the fuel pump. The LS fuel pump flows 33 gph. I looked up the fuel pump specs for the 3FE and IIRC it was 22 gph. It would need to be replaced. I looked up the 1FZ and it was 31gph IIRC. The aftermarket replacement pumps for the 1FZ I found were 33gph. A perfect match. I had to order the 1FZ fuel pump cushion from Toyota as the 3FE cushion will not work with the 1FZ pump. I then cleaned all the rust off, painted it, and slapped on a new gasket. The final result:

View attachment 3310687
View attachment 3310688

That's it for now. Onto the next step!

Great write up. On the GM fuel sender you added did you find a bulk head wiring fitting to get the wiring through the fuel pump hanger but still keep it sealed? Any tips where to find that?

Trying to stay smog legal to pass with Cali ref's what did you do on the evap system to get a 5/8 vapor line from your Toyota tank to a GM carbon canister. I am trying to come up with a similar solution. My GM truck donor tank has internal vapor check valves. Trying to figure out something similar but more externally mounted to serve the same function. Attached are photos of what they look like when cut out of the tank, one line is 5/8" and the other is 5/16". I believe these serve as the vent line for fuel filling as well. Anyone have experience on a solution for this to work with the stock Toyota tank?