Chapter GMW | E30 LS1 (starting on post #1427)
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Finally! As I suspected but a little worse. Must have had loosened up and was turning it at weird angle so it sheared off. #powerproblems #havearaceshopbuilditnexttime
What was in the bottom of the pan.
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@DrLeadFoot
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I think this is the best option.
http://store.bimmerworld.com/gsr-m52m54-four-bolt-oil-pump-shaft-p2210.aspx
@DrLeadFoot
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Glad you got the pan off. The chain driving the oil pump is a different one from the cams, right? Any oil analysis results yet
There are two different chains. One guy on R3V said that the tensioner would have been affected but the tensioner only touches the timing chain not the oil pump chain. I'm confused about that.
No results yet since I haven't mailed it. The sample I took won't be 100% accurate because, as you know, you need to heat up the oil and mix it up. I took the sample when the oil was about half way done draining. I will be monitoring the oil closely from here on out just so I know when to replace my bearings.
@DrLeadFoot
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Are you anticipating a rebuild/new bearings kind of no-matter what? Or making a decision based on the results?
Based on results. The oil was newer and I caught it pretty quick I think. If it is okay I will shout the praises of Royal Purple from the mountains. A little worried about my turbo shaft play doe.
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@DrLeadFoot
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note to self....
never turbo anything, ever
drive camrys till the day i die
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Why wasn't this nut welded when it was put together at the very minimum? Knowing that these are known issues its something that shouldnt of happened in the first place. Also many many people go with the vac motorport oil pump upgrade which includes a hardend oil pump shaft. I don;'t know about the one you posted but that is an option as well. But do as you please. Also some of the older m50's have chain tensioners on the oil pump chain. Yours does not. Again some opt and add a Euro oil pump chain guide/tensioner or a s54 chain tensioner for the oil pump. Not 100% needed but something id consider if you are reving it high often.
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Why wasn't this nut welded when it was put together at the very minimum? Knowing that these are known issues its something that shouldnt of happened in the first place. Also many many people go with the vac motorport oil pump upgrade which includes a hardend oil pump shaft. I don;'t know about the one you posted but that is an option as well. But do as you please. Also some of the older m50's have chain tensioners on the oil pump chain. Yours does not. Again some opt and add a Euro oil pump chain guide/tensioner or a s54 chain tensioner for the oil pump. Not 100% needed but something id consider if you are reving it high often.
This, yours was safety wired?
I welded mine when I built my m50, it has survived 45k of bouncing off of the rev limiter. I am NA though, but that wouldn't really affect the oil pump.
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Why wasn't this nut welded when it was put together at the very minimum? Knowing that these are known issues its something that shouldnt of happened in the first place. Also many many people go with the vac motorport oil pump upgrade which includes a hardend oil pump shaft. I don;'t know about the one you posted but that is an option as well. But do as you please. Also some of the older m50's have chain tensioners on the oil pump chain. Yours does not. Again some opt and add a Euro oil pump chain guide/tensioner or a s54 chain tensioner for the oil pump. Not 100% needed but something id consider if you are reving it high often.
This, yours was safety wired?
I welded mine when I built my m50, it has survived 45k of bouncing off of the rev limiter. I am NA though, but that wouldn't really affect the oil pump.
It was not welded or safety wired. I didn't know about this and that is why I brought it to a shop... There was a lock washer installed but I don't think that was in the Bentley manual.
I'm going to do some more research to see if I can get the GSR pump to work with my current pump otherwise I will try to retrofit a m54 or m52 5 bolt pump in there. (I think this is right). If I need to weld a shorter pickup on one so be it.
I am worried about breaking the shaft aswell as the nut coming loose. This motor revs so fast!
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@DrLeadFoot
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This might be in my future.
http://store.vacmotorsports.com/harmonic-damper-bmw-m50-m52-m54--s50-us-s52-us-p756.aspx#
@DrLeadFoot
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There should be no lock washer between the nut and the gear, and your pump nut has most certainly been drilled.
Did you build this part of the engine or did the shop?
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I mentioned the safety wire because the nut looks like a drilled one.
The base of the thread looks knurled too. That lock washer looks out of place.
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This might be in my future.
http://store.vacmotorsports.com/harmonic-damper-bmw-m50-m52-m54--s50-us-s52-us-p756.aspx#
Not something really needed with your set up but again once you are ready let me know. As usual I get these cheaper then VAC (aka vac overcharges on a lot of things)
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@DrLeadFoot
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There should be no lock washer between the nut and the gear, and your pump nut has most certainly been drilled.
Did you build this part of the engine or did the shop?
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I didn't build it and the shop "doesn't recall" what they did with the nut.
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@DrLeadFoot
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Something is out of place with how that was done. Breaking shafts is no good no matter how you slice it!
Pun intended
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Some more carnage pics. The hole on the nut doesn't go all the way through.
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@DrLeadFoot
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