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Coolant in oil
Posted: Wed Apr 15, 2020 1:29 am
by adam_torrence
I recently bout a 1979 528i and did a top end restoration it had a blown head gasket when I took the head off and so I got the head remilled and rebuilt/ pressure tested after putting everything back together it wasn’t running and when I drained the oil allot of coolant was in the pan so I believe my block is cracked
I will test more tomarrow but now I’m looking for a 3.5 bottom end.
Re: Coolant in oil
Posted: Mon Apr 20, 2020 2:31 pm
by keehn
Adam,
Depending on where the crack(s) is/are, you might be able to get it welded and salvage the block.
Please keep us apprised on what happens either way.
Mike
Re: Coolant in oil
Posted: Tue Apr 21, 2020 12:21 am
by tlake
If you get lucky you might find an early, possibly Euro, block for a very reasonable price. An easy swap in for a very noticeable improvement in performance.
Re: Coolant in oil
Posted: Tue Apr 21, 2020 1:40 am
by Lock
If you're looking for a 3.5, I'd recommend the e28 b34 block because it's a little thicker and also bolts straight in to your engine mounts. My e34 block cracked between a head bolt hole and the coolant passages and toasted the engine.
Re: Coolant in oil
Posted: Tue Apr 21, 2020 2:52 am
by adam_torrence
I found a 86 635csi that had a rear end collision in a junkyard and got a m30b34 with a 5 speed for 400$ so I will do that swap now. There was a hole when I drilled out the broken coolant drain plug and retapped it I drilled too far and put a pin hole in my crankcase. I will be doing the swap now but I’m not sure what driveshaft fits with the 265 Getrag 5 speed but thank you all for your help