1987 supra turbo ?'s

[mirage83]

Originally Posted by DaBoss07

If I can find out the reason of the white smoke would be great.....cause thats the only thing that bothered me really. If someone can give me some advice that would be great.

White smoke and/or steam is generally coolant getting into the cylinders, and can mean a BHG (most likely), cracked head, or a cracked block. That the seller says they just replaced the hg a little while ago does NOT mean that they knew what they were doing and did a good job of it or that it fixed the problem if it wasn't the hg.

BTW, oil in the cylinders will give you greyish-dark smoke, and excess fuel (running rich) will be black.

The radiator fan knocking sounds like they may have screwed up the keyway on the crank where the harmonic balancer mounts. If so, that would really screw up the crank bearings given time. With the engine off try and rock the harmonic balancer a little, and with it running look and see if it's oscillating.

Not sure what the chug-chug sound is, though it "might" be compressor surge if the BOV isn't working properly.

All in all I'd at least do a test for exhaust gas residue in the radiator. Most radiator shops can do it quick and cheap, or you can do it yourself. That ought to tell you if you're looking at a bhg or not. In any case I'm not sure that I myself would trust the guy selling it. JMHO.

Oh, all rumors to the contrary, a properly maintained 7M is a good engine which can and will last a long time. There's no need to go to a non-7M engine in order to get a reliable engine so long as you take reasonable care of it.