January 31st, 2018
Update on the 230 for the 1933 Dodge Peking to Paris Rally car build!
Tony Smith spent the weekend working on the 230. Here are his notes-
It was quite clean inside and in amazing condition overall. There were no signs that the engine had ever been disassembled. The oil pan had a bit of sludge in the bottom as they always do, but unlike most of these old engines that I tear apart it didn't have sludge accumulated everywhere else. Even the oil reservoirs adjacent to the lifters were clean! Here are the details:
- Fully disassembled the engine.
- Rod and main bearings all showed normal wear patterns. Main thrust bearing surface was good.
- Piston wear patterns were centered and normal.
- Thermally processed the block, pan, timing cover, front plate, etc.
- Bead blasted the main caps and stock main bolts.
- Deburred and buffed the main cap mating surfaces and chased the main cap threads in the block.
- Checked main caps' fit in the block's registers. All caps fit tightly.
- Torqued the main caps on with stock fasteners.
- Shotpeened the block.
- Hot tanked the crank and rods.
- Shotpeened the crank.
- "Polished" the rod beams to remove lateral stress risers from the forging die parting line.
- Torqued up the rods with the stock rod bolts.
- Shotpeened the rods.
- Removed the stock rod bolts from the rods and ground the mating surfaces in preparation for resizing the big ends.
- Magnafluxed the block, crank, and rods. No cracks found!
- Inspected and measured the crank: rod and main journals are standard size with 0.001" wear and very mild grooving/scratching. Thrust surfaces are not worn. Rear main seal surface is good, not grooved by seal.
- Inspected and measured the block: cylinders are standard size with 0.003" wear/taper. No gouges or scratches in cylinders. Deck is flat and in good condition. Manifold surface is pitted and will need surfacing. Main bore is straight and within specs. Rear cam bore (the one that doesn't have an insert bearing) shows no signs of wear. No signs of valve seat erosion. No stripped threads in block but there are several broken head and manifold studs that will require drilling out. Lifter bores show no signs of wear.
- Inspected the cam. Journals are within specs. Lobes show normal wear patterns. Will be a good core for regrinding.
- Inspected the lifters. Faces have normal patterns showing good rotation. No wear on sides. Good cores for regrinding.