What I meant was the engine variant coding is TD42 (non turbo) TD42t (turbo) and TD42ti (turbo/ intercooler), but all TD42 engine block numbers are all TD42 followed by 6 numbers e.g TD42******, there is no t or ti in the engine block number to tell you if it's turbo or not.Im pretty sure the engine code is in the ID number anyway
We are talking about the engine BLOCK "tye1986" for these oil squirters. This item is really what makes the difference for the TD42 and its ability to withstand the rigors of high Hp. And your 98 GQ will not have these items fitted from the factory.TD42 engines built after Aug1995 to model change GU have even lighter pistons and different rods among many differences these engines are a bit quiter running and seem to rev more freely but they have no tappings in the block for oil squirters hence same turbo story as pre Aug.
i found in my 98 gq coil cab the only difference to the turbo motor was the pistons and crank nut size. they have same rods and have oil squirters. i have never seen a td42 with out oil squirters on pistons.