Hello all,
Been researching for the past week looking into stroker combinations but they all lead to the same M54B30 internals in M52 or M50TU or M52B28 internals in M50TU and that doesn't necessarily answer what information I'm looking for.
I currently have a stock OBD 1 M52B28 swap in my E34 (aluminium block but I sleeved it when rebuilding), and while there replaced every gasket, seal, o-ring you name it as well replaced the crankshaft with a refurbished one from Lithuania with standard Goetze piston rings and Mahle Main and con bearings. Currently at around 120k km since rebuild and it has now overheated and has rod knock from rod 1 all the way to 6. Weirdly, I ask PO if he had any issues with the motor before and he says, motor overheated and knocked rod 1 to 6 twice and he rebuilt it regardless.
I do not want to proceed with block as it now proves that its worthless. The head has been inspected for NDT test and it is not warped or cracked and will be reusing it. Will replace every seal while at it. I received a M50TUB25 block with all the internals for free and wanted to use the iron block.
M52 crank has been inspected and is okay as well as the rods, none are bent and pistons have no damage (skirt & dome) though a bit worn out at the skirts but good regardless.
M50TU is in good condition as well, crank looks fine, pistons and rods as well. Just need to have the block honed and sleeved and resurfaced. The math to get the compression will be quite tricky as well.
Here in Nairobi, Kenya, our fuel octane levels are at 95RON and at 6000ft above sea level.
Question 1: Can I combine the M52B28 crank, M52B28 pistons and M50TUB25 rods or what would be the best advisable combination for set?
Question 2: Kindly assist with the best high compression setup for my motor and the math to accompany it if that's not much to ask. I know the machine shop wouldn't remove more than .002" resurfacing the block.
Been researching for the past week looking into stroker combinations but they all lead to the same M54B30 internals in M52 or M50TU or M52B28 internals in M50TU and that doesn't necessarily answer what information I'm looking for.
I currently have a stock OBD 1 M52B28 swap in my E34 (aluminium block but I sleeved it when rebuilding), and while there replaced every gasket, seal, o-ring you name it as well replaced the crankshaft with a refurbished one from Lithuania with standard Goetze piston rings and Mahle Main and con bearings. Currently at around 120k km since rebuild and it has now overheated and has rod knock from rod 1 all the way to 6. Weirdly, I ask PO if he had any issues with the motor before and he says, motor overheated and knocked rod 1 to 6 twice and he rebuilt it regardless.
I do not want to proceed with block as it now proves that its worthless. The head has been inspected for NDT test and it is not warped or cracked and will be reusing it. Will replace every seal while at it. I received a M50TUB25 block with all the internals for free and wanted to use the iron block.
M52 crank has been inspected and is okay as well as the rods, none are bent and pistons have no damage (skirt & dome) though a bit worn out at the skirts but good regardless.
M50TU is in good condition as well, crank looks fine, pistons and rods as well. Just need to have the block honed and sleeved and resurfaced. The math to get the compression will be quite tricky as well.
Here in Nairobi, Kenya, our fuel octane levels are at 95RON and at 6000ft above sea level.
Question 1: Can I combine the M52B28 crank, M52B28 pistons and M50TUB25 rods or what would be the best advisable combination for set?
Question 2: Kindly assist with the best high compression setup for my motor and the math to accompany it if that's not much to ask. I know the machine shop wouldn't remove more than .002" resurfacing the block.
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