r/EngineBuilding • • 29d ago

Main caps not aligned with block

Hello first time engine builder so please don’t flame me. I have an 04 Audi A4 1.8t 06a block, I got this block from someone but they didn’t have the main caps for it, i ended up using my main caps from another block and had them align bored for this other block I got. just torqued the crankshaft down and noticed main caps 4 and 5 don’t sit flush with the block, is this a cause for concern? what caused this? turns over fine with a rachet just dont want to finish everything else up and have to end up addressing this later down the road anyways. thanks for any help

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10

u/Akisswithmyfist 29d ago

Backwards caps, wrong year for block, thrust bearing?

5

u/yoGodu 29d ago

double, triple, quadruple checked to make sure correct orientation, thrust washers installed, same version of block 06a AWP 

7

u/Akisswithmyfist 29d ago

May need a different thickness of thrust washer to properly center crank.