So over the past few years I have been rebuilding a stroker that I bought second hand. The engine was sold to me as a 2.7L several years back from a fella in Chicago. He said it was built by some shop in California in conjunction with Ireland Engineering etc etc and it had about 20 hours of race time on it.
Well it turned out to have so much blow by that I could hold my hand to the tail pipe and it would get covered with little black speckles. It had custom pistons and a forged turbo diesel crank so I decided to get it rebuilt.
I had to have a few foot surgeries and recover from them so the engine sat at the machine shop for quite some time. While I was rather medicated I made the decision to swap to s50 rods as I had done with my other stroker. I did not stop and think that the rods in the block were 130mm eta rods rather than 135mm 2.5i.
Well, the machine shop simply followed my instructions so I am left with pistons that will likely poke +5mm too far out of the block.
Options are to:
1) buy new pistons designed to work with this setup. Would need to have rings filed and check wrist pins against small end of rods. (Already have rings matched to this block with current pistons)
2) go to 2.5i crank (need to pay for all of the machining to match crank to block, rods, already have this done for the TD crank and this block)
3) go back to the eta rods (rod to stroke ratio decreases, might have been part of why rings were tossed) simply have them matched to the crank and hang the pistons on the rods
I have another block, the rotating assembly from both an seta and 2.5i. I could save the s50 rods for that block and hang them on the 2.5i crank with stock pistons or get custom pistons made to put on them.
Pretty sure 3 makes the most sense. Already had the bearings coated and don't really have the money at the moment for the other options. Not optimal, but at least I only have to pay for the rods to be conditioned, sized etc. and the pistons placed onto them.
Well it turned out to have so much blow by that I could hold my hand to the tail pipe and it would get covered with little black speckles. It had custom pistons and a forged turbo diesel crank so I decided to get it rebuilt.
I had to have a few foot surgeries and recover from them so the engine sat at the machine shop for quite some time. While I was rather medicated I made the decision to swap to s50 rods as I had done with my other stroker. I did not stop and think that the rods in the block were 130mm eta rods rather than 135mm 2.5i.
Well, the machine shop simply followed my instructions so I am left with pistons that will likely poke +5mm too far out of the block.
Options are to:
1) buy new pistons designed to work with this setup. Would need to have rings filed and check wrist pins against small end of rods. (Already have rings matched to this block with current pistons)
2) go to 2.5i crank (need to pay for all of the machining to match crank to block, rods, already have this done for the TD crank and this block)
3) go back to the eta rods (rod to stroke ratio decreases, might have been part of why rings were tossed) simply have them matched to the crank and hang the pistons on the rods
I have another block, the rotating assembly from both an seta and 2.5i. I could save the s50 rods for that block and hang them on the 2.5i crank with stock pistons or get custom pistons made to put on them.
Pretty sure 3 makes the most sense. Already had the bearings coated and don't really have the money at the moment for the other options. Not optimal, but at least I only have to pay for the rods to be conditioned, sized etc. and the pistons placed onto them.
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