Block comparisions
01-05-2005, 07:18 PM
#31
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Porsche changed the main bearings in 1984 modifed the thrust surface and the crank so depends on engine number after 81e00147 (5 speed) and 81e05343( AT ).
01-05-2005, 08:08 PM
#34
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Matt I think your pistons may be too long ,wrist pin not high enough to use the GTS crank besides if you had the engine that far apart ...... why not go 100 mm pistons ?? and then and then !!
01-05-2005, 10:14 PM
#35
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01-05-2005, 10:48 PM
#36
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Originally Posted by Jim bailey - 928 International
Matt I think your pistons may be too long ,wrist pin not high enough to use the GTS crank besides if you had the engine that far apart ...... why not go 100 mm pistons ?? and then and then !!
01-06-2005, 03:27 PM
#39
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It looks like it was a GTS has 8 counterweights....have to wonder why it came apart since he stated he has block and pistons too !
01-06-2005, 03:30 PM
#40
It was a "oil consumption" short block replacement. The original block sat for a few years, and it was "inherited" sort of I guess. The block has a "problem" with the rear speed sensor boss as well.
01-06-2005, 03:30 PM
#41
It will be shipped to me soon. I'll update when I get it.
01-06-2005, 03:43 PM
#43
It sounds like I'll get crank, rods, pistons and block. The block will be separatly shipped, and he says he ships cranks all the time - and has a crank box.
If its what is advertised, then that means I could have a nice rotating assembly, but I may not use the pistons. I'd like to use the block for my "deck plate + nicasil" 4" piston (for rings choices and piston choices) experiment. Or maybe custom rods AND pistons.
I'll still go forward with my 5.0 block and S4 crank build for my supercharger S4. This will hopefully be a solid second engine build with some more planning.
If its what is advertised, then that means I could have a nice rotating assembly, but I may not use the pistons. I'd like to use the block for my "deck plate + nicasil" 4" piston (for rings choices and piston choices) experiment. Or maybe custom rods AND pistons.
I'll still go forward with my 5.0 block and S4 crank build for my supercharger S4. This will hopefully be a solid second engine build with some more planning.
01-06-2005, 03:56 PM
#44
Drifting
way to go brendan! let us know what you find with the engine block, whether its holes are out of round or what. theres not too much definitive information out there concerning these replacement scenarios.
01-06-2005, 04:00 PM
#45
I'll be happy to report fully. I'm thinking it will be a good candidate for the boring over a bit for custom pistons, as there's bound to be maybe worn bores, some scratches, etc. PLus the stock compression of that bottom end would be too high for boost of any moderate number anyway.
