Here are a bunch of pictures from when I stripped down the new engine that will be going into my midget. It is a SR20DET, which comes from the Nissan Silvia (this one an S13). The Silvia is the Japanese version of the Nissan 240sx. In japan it got this engine, among others. It is rated at 207 horsepower, and is dual overhead cam, with fuel injection, and a turbocharger. All in all, I removed about 45 lbs of weight from this engine by removing the power steering pump, ac compressor, a smog device, the broken mechanical fan, a broken coolant crossover tube, and the heavy metal plate the aforementioned accessories mounted to.

I'll be making comments about the pictures as I go along.

The first item on the list is the AIV hole plug. The AIV system is an emissions device which lets air into the exhaust track at idle to keep the catalytic converter working. Later computers lean the car out at idle to do the same thing. I won't be using a catalytic converter, so there is no need.

These next shots are of the transmission.

1. This is the drive shaft u-joint, when the driveshaft was cut off. It's a good thing they did so I can have the mounting flange.		2. This is the speed sensor. I will have to change it for one from an American KA24DE equipped 240sx. I am told that this one reads in KPH and the American unit in MPH. I imagine it could be taken care of with the right gauge choice, but we will see.
3. This is where the wiring from the speed sensor got damaged. I'll have to get out the soldering gun, and see what I can do.		4. This is another electrical doo-dad. Not sure what it does. Probably the reverse light switch, based on location.
5. Another sensor of some sort. Not sure what it does.		6. The Clutch Slave Cylinder. looks about the size of my MG master cylinder. Still haven't decided what to do there.
7. An overall shot. You can see the wires, shifter, and the reddish vent tube. It's a tad longer and wider than the MG transmission, but it should fit with a few modifications.

This is a shot of a coolant crossover tube on the back of the engine. It won't be used in my conversion, which is just as good, because it was tweaked beyond my ability to fix. It will be removed later.

These next shots are some general ones from around the engine. I'll describe what is in them.

1. This is the AIV hole, and AIV pipe. It's what the plug for in the first pic is for.		2. This is the AIV valve. It takes a signal from vacuum, and at idle injects air into the exhaust manifold to keep the catalytic converter going. It's not needed and will be removed later.
3. This is a pretty good pic of the turbo. The circle you see at the bottom facing you is the inlet. The rubber hose, and pipe at the top is the turbo outlet.		4. I'm pointing at the Power steering pump in this pic. The midgee does not need it, so it will be removed later.
5. My finger is aiming at the ac compressor. Again, no AC in the MG so off it shall come.		6. Another shot of the turbo inlet, this time with some vacuum controlled thingie.
7. The camshaft position sensor, along with some tubing.		8. An overhead shot showing the top of the AIV valve. It also shows off the top of the valve cover.
9. Back of the valve cover. This shows where they incorrectly cut the wires, requiring I buy a new engine harness.		10. This is the top of the intake manifold. Visible in the picture are the injectors.
11. The broken mechanical fan. There will likely not be enough clearance anyway, so off it comes.		12. Front of the valve cover. Might I say: sexy!.
13. Top of the valve cover, with the text fully readable. The plastic chips you see are from a mangled injector connector. The injector is fine, it just has some broken plastic near the electrical connector.		14. An overhead shot of the pulleys and some belts. I plan on eventually getting the electrical water pump, so when I am done the only belt will be driving the alternator.
15. Front 3/4 view of the intake manifold. You can see the throttle linkage.		16. Top view of intake manifold with injectors.

Another sequence of shots. These are the removal process, mostly.

1. Our first victim, the AC compressor.		2. This is one of the top bolts holding it on.
3. Bottom Bolt #1.		4. Bottom Bolt #2.
5. This is the bracket bolt I think for the power steering pump.		6. Bracket tensioner bolts, helps if they are loose.
7. The side of the engine with the brackets and stuff removed. Much cleaner. The bolts are still there to help show how it was bolted. You can see the motor mount in the right side of the pic.		8. Another shot of the bolts from another angle. You can also see the bolt on the front of the engine.
9. This one shows the spot where the AIV valve used to sit, also much cleaner.		10. A shot of the AIV hole plug moving towards its new home.
11. AIV hole plug started.		12. Now with a wrench hanging off. It's a crappy wrench. I didn't have a nice one that was big enough.
13. Another shot of the void where the AIV valve was.		14. Front of the engine sans accessories. You can see two unused pullet groves. I wonder if I can get a pulley with just one groove, for the remaining belt driven items.
15. The fan clutch. It will either come off just because, or come off when I put on the electric water pump.		16. A nice shot of the air where the accessories were. Air is much lighter than metal, or so I have been told.

Next are two shots. Both show the turbo, just from different angles.

  

Some shots of the 45 lbs of removed goodies.

1. All of them.		2. The AC compressor, a heavy customer.
3. Power steering pump, lighter, but no lightweight.		4. Fan, crossover tube, and AIV valve assembly.

A well worthwhile exercise, and put the pony on a diet.

© 2003 Brownie Davis All Rights Reserved