Okay, so I've just put a 7M-GTE that's been getting built up over the last 4 years or so bit by bit into my '90.
Am I 100% sure of anything that was done 4 years ago? Of course not.
Block was taken to a machine shop, and matched for tolerances to the forged pistons I bought for it, cleaned, bored, line-bored for the crank, decked, and looked great. Cylinder head also done up, and looked great.
So lots of assembly lube, and wrench pulling time later, the engine is finished, and I drop it into my car. I finish getting everything bolted together, and crank. No oil pressure. Turns out I made a dumb mistake, and crossed the lines to the remote filter mount, so no oil flow past the filter. Engine was cranked for a bit, CPS re-clocked, then cranked and it started. Ran for ~5-10 seconds on assembly lube, then shut down. Fixed oil filter feed, started again. Sounds much nicer, oil pressure, then none. Shut down. Oil all over the ground under the car.
Oil appears to be flowing from between the block and the lower timing cover -- the one machined with the block. the timing belt is dry, so it's not coming out to the timing belt area, so it's not the main seal or oil pump driveshaft seal.
So, given the volume of oil in a short time, I'm thinking that it's not like a gasket leak, but a system plug somewhere that the machine shop removed, and I missed re-installing. Or missed tightening.
I can't see clearly the source of the oil, but it appears to be forward of the oil pressure sender and turbo oil feed. Is there a plug there that I may have missed? I think there's a plug that goes between the timing cover and the block casting, which it could be. given the TSRM oil system diagram, it appears to be the exhaust side front where the oil feed to the cylinder head is. this appears to be where the leak is, so if there are any places there that could leak a lot of oil, I'd like to know where that is.
It occurs to me that's also immediately below the CPS, though I know that I have a new O ring seal on the CPS, and I don't know that even with that seal completely fubar it would leak that much oil that quickly.
Anything else in there I missed?
I'll be checking around again tonight. no time this weekend because prior commitments though.
Am I 100% sure of anything that was done 4 years ago? Of course not.
Block was taken to a machine shop, and matched for tolerances to the forged pistons I bought for it, cleaned, bored, line-bored for the crank, decked, and looked great. Cylinder head also done up, and looked great.
So lots of assembly lube, and wrench pulling time later, the engine is finished, and I drop it into my car. I finish getting everything bolted together, and crank. No oil pressure. Turns out I made a dumb mistake, and crossed the lines to the remote filter mount, so no oil flow past the filter. Engine was cranked for a bit, CPS re-clocked, then cranked and it started. Ran for ~5-10 seconds on assembly lube, then shut down. Fixed oil filter feed, started again. Sounds much nicer, oil pressure, then none. Shut down. Oil all over the ground under the car.
Oil appears to be flowing from between the block and the lower timing cover -- the one machined with the block. the timing belt is dry, so it's not coming out to the timing belt area, so it's not the main seal or oil pump driveshaft seal.
So, given the volume of oil in a short time, I'm thinking that it's not like a gasket leak, but a system plug somewhere that the machine shop removed, and I missed re-installing. Or missed tightening.
I can't see clearly the source of the oil, but it appears to be forward of the oil pressure sender and turbo oil feed. Is there a plug there that I may have missed? I think there's a plug that goes between the timing cover and the block casting, which it could be. given the TSRM oil system diagram, it appears to be the exhaust side front where the oil feed to the cylinder head is. this appears to be where the leak is, so if there are any places there that could leak a lot of oil, I'd like to know where that is.
It occurs to me that's also immediately below the CPS, though I know that I have a new O ring seal on the CPS, and I don't know that even with that seal completely fubar it would leak that much oil that quickly.
Anything else in there I missed?
I'll be checking around again tonight. no time this weekend because prior commitments though.
