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Old 08-19-2010, 01:46 PM   #1
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Default I might have just figured out my oil leak

Ok anyone who went to the miata meet at steves knows i have an oil leak, the leak was anywhere from .6-1 quart per 100 miles, it only leaked at high speed/pressure, and got slung around everywhere under the hood from the crank pulley.
I thought it was the crank seal but upon disasembly all the usual **** that is slick and oily when that fails was dry and in great shape. Then i noticed a new hole in my BE oil pump i geuss they used a different housing etc.
anyway here is my 1.6 stock oil pump
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and here is my new BE oilpump after i jb welded the extra bolt hole
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I measured the depth of the hole and it goes damn near all the way through so I thought it was worth a shot. Once the jbweld has cured i will post an update. Thoughts etc. anyone else seen this problem?
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Old 08-19-2010, 01:48 PM   #2
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this has been discussed... that's your leak for sure.


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Originally Posted by Savington View Post
M8x1.25x45mm. Someone posted a video of their motor squirting a *stream* of oil out of that hole when revved.

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Originally Posted by kotomile View Post
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Old 08-19-2010, 01:53 PM   #3
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ahh i thought so but most of what i saw was the **** for the AC compressor bracket wich i have installed with all bolts etc. I looked for nubbins thread but i didnt find it thx scot.
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Old 08-19-2010, 01:59 PM   #4
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im the king of search.
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Old 08-19-2010, 02:01 PM   #5
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so should i take out the jb weld or do you think i will be ok?
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Old 08-20-2010, 01:06 AM   #6
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so should i take out the jb weld or do you think i will be ok?
well wtf did no one have any insight? Like i said before this is in the same area but it is a bolt hole that my stock **** did not have and all the bolts that i ran on my stock **** are installed. So lumping me into the mess of people who just didnt put there **** back together with all the bolts they needed to get the job done is BS. Seriuslly why do i even ask questions if you guys wont take what the **** i post serius?
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Old 08-20-2010, 01:11 AM   #7
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It appears that I'm almost 12 hours too late, but I would've gone and found a bolt of the appropriate length and put that in there. Non-AC equipped Miatas have a shorter bolt in that place.

You're effectively shorting yourself some clamping load (or at least uniformity) on the oil pump to engine block seal.
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Old 08-20-2010, 01:31 AM   #8
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AC equiped all the time and bolts properly installed and torqued. Little **** like this drives me crazy.
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Old 08-20-2010, 01:34 AM   #9
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Ah, different hole than what I thought. Mine has a press-fit plug in that hole. JB-weld should be fine then. I was working on sealing up my oil pan and pump today on the bench but found out I didn't have the oil pump o-ring or the pickup tube gasket. FML.
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Old 08-20-2010, 01:41 AM   #10
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bryce ty so much that was all i wanted was for someone to actualy look at the problem. I am just as savvy as the next .net user but an extra set of eyes actualy looking at the situation helps a ton, it's not like i have 10 turbo miatas within a 50 mile radius that i eat lunch with every day.
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Old 08-20-2010, 02:06 AM   #11
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Has that little crack always been there on the end of the crankshaft?
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Old 08-20-2010, 02:14 AM   #12
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Yup, I was losing about a quart every 1k miles through that same hole. Stuck the appropriate bolt in there and I'm leak free.
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Old 08-20-2010, 02:31 AM   #13
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there is a crack where? i didnt even notice one tell me where, and i will go back out to make sure it isnt a trick of the light. Or left over loctite etc
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Old 08-20-2010, 02:58 AM   #14
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Originally Posted by magnamx-5 View Post
there is a crack where? i didnt even notice one tell me where, and i will go back out to make sure it isnt a trick of the light. Or left over loctite etc
Just pulling your chain.
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Old 08-20-2010, 02:59 AM   #15
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Joe made a funny! Hahahaha
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Old 09-04-2010, 09:10 PM   #16
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Ok so after predigous amounts of jbweld, locktite, and, time etc the car still leaks oil i verified that it is comming out from beneath the crank pulley so at this point im probly gonna be pulling the motor and redoing the pan. you gotta love this ****.
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Old 09-04-2010, 09:11 PM   #17
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ouch man. good luck. just have someone weld that ho up once and for all
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Old 09-04-2010, 10:17 PM   #18
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I know that sucks! I ended up buying a 2.0 to fix my leak. You might as well reseal the oil pump while you have the pan off.
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Old 09-04-2010, 11:00 PM   #19
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