The cylinders are made of cast iron (or steel I forget). It's normal for it to do that that's why it's important to make sure you have a proper 50/50 water to antifreeze mixture. Steve --- In dmcnews@xxxx, Soma576@xxxx wrote: > hey everyone, > > i've had my fuel system, intake manifold, waterpump, and y-pipe removed from > my car since november, where it is sitting in a storage garage. i put duct > tape over the ports for the intake manifold, closed the engine covers, and > let it be while i have been waiting for parts and fuel system cleaning. > anyway, just the other day i was over there and took a look at some things in > order to decide what parts i need to order and i looked inside the > passenger-side hole where the Y-pipe connects to and was puzzled to see a > corner of something caked in rust down there! if you look down the hole, i > can see coolant about an inch down (of course) and i can see the corner of > something (the cylinder head?) covered in orange/brown rust. i don't > remember it being like that before! i thought this was an aluminum engine? > my parts are coming this week so i can put everything back together again, > and now i'm worried that something has been rotting in my engine while i have > it all exposed. > > what should i do? should i put it all back together, put antifreeze in and > load it up with some rust dissolving coolant treatment, then flush the system > after a couple weeks? or should i just pretend i didn't see it? > > also, the driver's side is a little rusty but not as bad. > > Andy > > Soma576@xxxx > 1982 DeLorean DMC-12 VIN#11596 > Fargo, ND 58102 > > > [Non-text portions of this message have been removed]