"If you had both block and head cut then it's unlikely that the issue is that they weren't flat... at least not flat enough for a composite HG. For one reason or another a coolant jacket AND a bore jacket are not sealing... This is a bit much for a defect to be the culprit. I think that you're most likely dealing with a head that isn't all the way down. There are a couple reasons this could happen; The most common is that the lower, rear timing plate which bolts to the block was not attached to the block when it was machined. These need to be together when machined ad the HG and head lie on top of BOTH. If the timing plate isn't cut the head sits high there, you loose oil out the sides at the very front (how soon this starts happening depends on the offset) and you get coolant passages that are open enough to expel coolant and allow combustion gases in. If the timing plate is cut more than the block you'll find oil leaking into the timing belt area. Also, if you forgot to put the RTV in the specified locations before placing the HG on top of the block you'll get an oil leak out the front sides too."
where are the specified locations i used ALLDATA to do my rebuild and dont recall it saying anything about RTV i thought you werent supposed to use RTV on a HG? What kind should i use just regular gasket maker?
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1989 na turbo supra ~ 3ARacing exhaust 2.5" pipe no resinator, sports package
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