subdubscoot Posted November 19, 2016 Share Posted November 19, 2016 Hello all, I'm trying to rebuild/replace my EA82T and have read on here that the blocks are the same. Hence, some confusion. Below are some pictures. First, a picture of the EA82T block from my 86 GL10: Second, a picture of the block from an 87 XT (non turbo MPFI) engine I bought from a junkyard What is the extra cavity for in the GL10 block? What can I get away with? Third, a picture of one of the pistons from the 87 XT engine. I has been bored 0.5mm over. But this looks like an "interference" design to me and I thought all EA82's were non-interference? Does anyone recognize what these pistons are from? thanks much for looking and providing some help. I hope these pics can be enlarged somehow at least when viewing.... Link to comment Share on other sites More sharing options...
Caboobaroo Posted November 19, 2016 Share Posted November 19, 2016 The extra cavity on the back of the turbo block is a crank case breather. My ER27 has the same one. Having run a nonturbo block in an EA82T setup, not ideal to run without. It can cause blow by and other ring/land issues. The piston appears to be a SPFI piston or possibly an EA81 piston. The MPFI pistons had a slight valve relief in them, the carbed had a bit more relief and the turbo has a dish. It's been awhile since I've played with an EA82T as I've moved on to bigger engines. 1 Link to comment Share on other sites More sharing options...
subdubscoot Posted November 19, 2016 Author Share Posted November 19, 2016 Thanks. I'm actually planning to ditch the turbo and need to decide which block to use. The 86 GL block has been decked enough that I will have to use HG shims. Link to comment Share on other sites More sharing options...
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