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Old 10-31-2015, 12:09 AM   #1781
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Plug my hole too Lars.
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Old 10-31-2015, 09:14 AM   #1782
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Originally Posted by EO2K View Post
PLUG THE HOLE!

Rosenthal is here to help: PLUG, BLIND (9930-71-000) - $2.49 - 993071000



My Boundary pump had that hole, and it included the plug in the package with the pump.

Windage tray needs to match oil pan needs to match oil pickup tube. I *believe* they are interchangeable on 1.8s from 94-00, but don't quote me on that.

1.8 oil pump is 1.8 oil pump. They should interchange, just make sure you are using a 01-05 pump with the VVT head. The 94-00 pumps are not supposed to be up to the task of supplying a VVT head with enough oil to get the job done and Mazda made the gears wider in the BP6D/VVT/01-05 pumps to meet this demand.

VVT pump can be used in earlier engines as a sort of upgrade and Mazda has (IIRC) superseded all previous 1.8 pump PNs with the BP6D/VVT/01-05 pump. Just don't use an earlier NA8 or BP4W pump with a VVT head.

Don't trust me on any of this data because once again I've been drinking. Get independent confirmation before moving forward. Hopefully this all makes some sense .
Thanks for the link to the plug. It has now been ordered.

I know that 94-00 oil pumps are not supposed to be up to the task. I ran one for nearly 2 years with no oil pressure problems from 2010-2012. This included several track weekends. So while it is not optimal, at this point I am doing in.
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Old 10-31-2015, 12:43 PM   #1783
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Thanks for the link to the plug. It has now been ordered.

I know that 94-00 oil pumps are not supposed to be up to the task. I ran one for nearly 2 years with no oil pressure problems from 2010-2012. This included several track weekends. So while it is not optimal, at this point I am doing in.
Please don't, you've had more than your fair share of problems. Not running a VVT oil pump is going to delay the RPM at which your VVT will work due to the low flow. It will also reduce your oil pressure at low RPMs until the revs are high enough for it to come up to spec/bypass. There is no benefit for the engine by running the wrong, smaller pump. Only downsides.
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Old 10-31-2015, 02:24 PM   #1784
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Please don't, you've had more than your fair share of problems. Not running a VVT oil pump is going to delay the RPM at which your VVT will work due to the low flow. It will also reduce your oil pressure at low RPMs until the revs are high enough for it to come up to spec/bypass. There is no benefit for the engine by running the wrong, smaller pump. Only downsides.
I either run the brand new oem 99 oil pump, or I put on an unknown mileage vvt oil pump. Those are the 2 options I have, I don't have $300+ to spend on a new VVT oil pump, nor will I have the money any time soon.
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Old 10-31-2015, 02:33 PM   #1785
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I either run the brand new oem 99 oil pump, or I put on an unknown mileage vvt oil pump. Those are the 2 options I have, I don't have $300+ to spend on a new VVT oil pump, nor will I have the money any time soon.
What about selling the brand new OEM 99 oil pump to help cover the cost of a VVT pump? Just a thought. Not sure how much that would help.

If it's either new 99 or old VVT pump, I'd go with the used VVT pump. You KNOW the 99 pump is the wrong part. Or don't do a VVT head until you can get the new VVT pump if that's what you want.

I have run used VVT and used non-vvt (on non-vvt motors) oil pumps and never had a failure. I wouldn't hesitate to reuse a stock vvt oil pump. At least then it has the right pump from the beginning.
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Old 10-31-2015, 02:40 PM   #1786
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Reselling the 99 OP would net me less then a third of the cost of a new oil pump. So not feasible. Not sure what I am going to do really at this point. I will figure it out tomorrow when I go back out to the garage to work on things.

Going to a 94-97 head is not happening, while I have plenty, there is to many changes I would have to do in my engine bay to make me do it. The spare 99 head I have is dead and not usable.
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Old 10-31-2015, 03:18 PM   #1787
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Larsy, you know I love you, but it pains me to see you fail so hard and never learn from it.
You keep jimmy rigging things and then spending 4x the money fixing stuff. It's like you refuse to do things right the 1st time
Just a general thought. If you haz vvt, run vvt pump.
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Old 10-31-2015, 04:01 PM   #1788
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Larsy, you know I love you, but it pains me to see you fail so hard and never learn from it.
You keep jimmy rigging things and then spending 4x the money fixing stuff. It's like you refuse to do things right the 1st time
Just a general thought. If you haz vvt, run vvt pump.
This. It would suck to spend this much time and money to fix your car, only to have an OIL PROBLEM in the near future. Hell, you said you have a VVT oil pump. Use it. Done.
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Old 10-31-2015, 04:18 PM   #1789
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Tomorrow I will work on getting both oil pumps off, and the vvt oil pump cleaned up. Oil pumps don't use a gasket correct? It is just sealant and the one O-ring.
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Old 10-31-2015, 04:21 PM   #1790
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yup
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Old 10-31-2015, 04:26 PM   #1791
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Confirmed. I used grey RTV and an O-ring, and a torque wrench. It's never failed me.
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Old 10-31-2015, 04:50 PM   #1792
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brand new oem 99 oil pump
Where did this pump come from? Measure the gears. Unless you bought it 10 years ago and its been sitting in a box, it might very well be a VVT pump due to the part number superseding I was talking about earlier.
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Old 10-31-2015, 06:39 PM   #1793
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Where did this pump come from? Measure the gears. Unless you bought it 10 years ago and its been sitting in a box, it might very well be a VVT pump due to the part number superseding I was talking about earlier.
It came from Rosenthal in 2014. Rosenthal has 2 different pumps listed for the 1.8. The vvt is right below $300, the 99 pump is $130. Somehow I think they are difference unless the $2 plug changes the cost $170 or so. I honestly don't know what clearances I would be measuring in the pump or how. So I'm hesitant to measure those myself.

Here is the 99/00 oil pump, it has an "a" at the end of the part number. Here is the VVT oil pump, it does not have the "a" at the end of the part number.
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Old 11-03-2015, 02:09 AM   #1794
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can the hole be used for turbo oil drain?
because there are other sets that run the oil through the dipstick

Last edited by creon; 11-03-2015 at 07:00 AM.
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Old 11-03-2015, 06:54 AM   #1795
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can the hole be used for turbo oil drain?
Not close to large enough.
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Old 11-03-2015, 07:13 AM   #1796
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I'd pitch in $20 bux towards you buying a VVT pump if a crowd fund ever started.
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Old 11-03-2015, 10:03 AM   #1797
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I'd pitch in $20 bux towards you buying a VVT pump if a crowd fund ever started.
I don't take donations. At least not until I start running for president.
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Old 11-03-2015, 10:37 AM   #1798
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Some of us are tired of seeing things break (or know the pain) lol.
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Old 11-03-2015, 10:37 AM   #1799
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Some of us are tired of seeing things break (or know the pain) lol.
Don't visit my thread then haha.
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Old 11-03-2015, 10:39 AM   #1800
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Don't visit my thread then haha.
we all hurt together
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