Posted by leo | Posted in Car Development, Uncategorized | Posted on 17-08-2010
So middle of august right? Rain.
Tarps and tarps on legs to the rescue. Here is the state of things after the AutoX. This is after nine ~45 second autox runs and 20 or so miles of freeway driving.
More direct pictures of the damaged belts. New vs Used.
The newest and I think best theory for all of our belt problems is rusty pulleys. It then acts like sand paper against the belts and just grinds them down. These pulleys were on the gray car originally and had been sitting for 8 years growing this “sand paper”. The state of the pulleys currently on the car:
Not awesome. The pulleys on the blown motor were much better.
Despite having three stock alternators at one point, I couldn’t find any other pulleys. I think I threw them away thinking that the double pulley would solve all our problems. We did our best to clean up the only remaining stock alternator pulley. It’s not perfect but its a lot better.
We got a protip from a local guru (Thanks Bert!) about the fan. It was designed to run idling in traffic with the a/c on. We will certainly never have that kind of standing heat load on this car ever again. We don’t need all 8 fan blades! This should reduce load a little. We were even told that maybe 2 blades would be enough. Off with their blades!
Nice.
So now for the bad news. I’ll tell the story in a series of pictures and then explain.
This is a series of pictures of the exhaust ports on our first (blown) motor. I’m not going to go into the basics of how a rotary works but you can read about it here http://www.howstuffworks.com/rotary-engine1.htm. It’s not at all like a normal piston motor.
I’m pretty sure that white fluffy stuff is mold. In the third picture you can see the center iron which contains the chamber sides for both motors. It’s blue. I’m assume due to excessive heat.
The motor is FULL of water. I think this pretty much means we have completely shot coolant seals. If you turn it it just spits out massive amounts of water. In the rest of the pictures I was trying to get a good shot of the combustion chamber surfaces. These are supposed to be perfectly smooth and have a mirror like finish. They are scored and pitted. It’s likely that they are warped too. That means that this motor is so badly damaged we can’t even rebuild it.
Lame.
Anyone have a rebuild-able S4 or S5 2nd gen N/A rx7 motor they want to sell?
