bowtiebutler956
Active Member
I started a thread in the 6.5 performance section because I had a question about the use of an ATT on my 6.5, and I continued to just post updates in that thread rather than starting a new thread in this section on the engine. Anyway, I recently picked up a 93 K2500 that was a basket case. The pass side head was off the engine, and missing, along with other parts. After pulling the engine, and inspecting it, I found one 3/4in long crack in one of the main webs. Not having any extra cash to buy a set of heads for this engine, I decided to pull the 6.5 N/A out of my 96 G30 van, and use it in the truck, as it is a good running diesel. After pulling the engine, I removed the pan to find 2 cracks in the mains on this block, and maybe more once I do a closer inspection. :???::mad2: Its really quite frustrating that most of these 6.5 blocks have cracks. In the future, I would like to buy one of the updated pull outs from Ted's, but thats not an option right now.
So, here is my current game plan. I've ordered a set of Mahle rings, and some new rod bearing that will be going in one of these blocks. (probably the 599 from the truck as it only has one crack in the block). Its been recommended by others not to replace the main bearings if they look good, as the factory custom fit them to each engine. It has also been suggested to not even touch the main caps to prevent further cracks, but I don't know how I would be able to clean the block properly after honing the cylinders, if I don't remove the crankshaft. :???: Let me know what you think.
I can't afford to dump a bunch of money in this engine, as the condition of the rest of the truck is unknown. It would stink to put a bunch of money into it, just to find out I'm going to have to rebuild the transmission, etc... That being said, I have already bought new injectors, glow plugs, rings, rod bearings, full gasket set, and seals, as well as a new Diamond Eye down pipe from Leroy, as there is no way I'm putting the OE down pipe back on that looks like its been run over by a truck several times! I've also made a homemade turbo master for it, as well as drilling, and tapping the exhaust manifold for an EGT gauge. I've been cleaning, and repainting parts, and I'm leaning towards painting the engine Red. Here are some pics. Thanks
Matt
So, here is my current game plan. I've ordered a set of Mahle rings, and some new rod bearing that will be going in one of these blocks. (probably the 599 from the truck as it only has one crack in the block). Its been recommended by others not to replace the main bearings if they look good, as the factory custom fit them to each engine. It has also been suggested to not even touch the main caps to prevent further cracks, but I don't know how I would be able to clean the block properly after honing the cylinders, if I don't remove the crankshaft. :???: Let me know what you think.
I can't afford to dump a bunch of money in this engine, as the condition of the rest of the truck is unknown. It would stink to put a bunch of money into it, just to find out I'm going to have to rebuild the transmission, etc... That being said, I have already bought new injectors, glow plugs, rings, rod bearings, full gasket set, and seals, as well as a new Diamond Eye down pipe from Leroy, as there is no way I'm putting the OE down pipe back on that looks like its been run over by a truck several times! I've also made a homemade turbo master for it, as well as drilling, and tapping the exhaust manifold for an EGT gauge. I've been cleaning, and repainting parts, and I'm leaning towards painting the engine Red. Here are some pics. Thanks
Matt
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