Alex Buchka
8 cylinders
- Joined
- Apr 8, 2004
- Location
- Los Angeles
Do you think it's possible with a LH2.4 speed sensor in place?
I don't know about that. I have a G80 and aluminum diff cover with a sensor for the car but I haven't bolted them on yet.
Progress continues on the swap. Most of the work has been things that don't really make for good updates; buying parts, making wiring schematics, and planning out all the work.
The clutch and flywheel are now bolted on. Installing them turned into a giant headache due to numerous unforeseen issues with fastener clearance and stack height cock-ups. I got the proper prevailing torque lock nuts on there for peace of mind (and silver plated for extra opulence).
The Megasquirt 2 I'm using to run this heap has been mounted in a nicer box with proper connectors. The engraving on the box is a reference to the ECU used in a friend's internet-famous 240SX time attack car. His ECU is known as the Megatron Blackbox (reference to the "brain boxes" used to control Megatron branded BMW turbo F1 engines of the 80's). The jam nuts are complete with Safe-T-Cable for the proper aerospace look.
Homer kindly found me a later model whiteblock thermostat housing that comes with a much more megasuirt-friendly coolant temp sensor and an extra threaded boss that Karl and I re-purposed to accept a temp sensor from a late model CBR1000RR.
The spare sensor boss is at a really weird angle. Drilling and tapping it to M12x1.5 required some creative workholding on the mill and also needed a smidge of weld on the back of the boss to make up for the much deeper CBR sensor element.
This is the last photo I took of the original engine before ripping it out. As you can see the engine bay of this car never got much love.
Later that day the whiteblock found its way into the bay, sitting comfortably on a set of Homer's whiteblock swap engine mounts. It's hard to believe how well the engine fits in a 240. Everything clears as if it was designed to be there. The only close call was the 25mm IPD swaybar that sat about 1mm from the oil pan. We added about 6mm of shims to the swaybar mounts to take care of that issue.
The W58 also found its way into the car. The transmission mount is visible in the corner of the photo. It's just some .125" steel sheet welded to the crossmember, very simple and sturdy enough for the application. The shifter didn't line up as well as I had hoped and needs to be moved back about 60-70mm. Some chopping and welding will tune that up right quick.
That's it for now. The engine is getting pulled back out sometime this week so we can clean the engine bay thoroughly and finish the last little bits of work on the engine. Also going to be drilling some holes in the firewall for a few bulkhead connectors.