MMR vs OEM opg clearance

[BrokenVet]

Hi all,

Long time lurker getting ready to install a Whipple stage 2, and don't opg/cs replacement at the same time. Ordered the MMR opg, and since car has 30k miles, I decided to order a new opg housing also. The new housing has new OEM gears in it, and when I opened the housing to swap the OEM with the MMR, it looked like the clearance between the inner and outer gears was tighter, so I measured, and the clearance between the inner and outer OEM is . 004", and the clearance on the MMR is . 011". Is this too much, or am I just overthinking it? I struggle with putting thoughts in to words, so I hope this makes sense.

I searched and read several threads on aftermarket opg's, but was unable to find a good answer, so I apologize if I missed something that is already posted.

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[shogun32]

There are a couple of very detailed threads already on this topic. MMR is total garbage do not buy their opg for any reason.

Buy the ford performance gt500 oil pan and oil pump combo for less than $800 and sleep easy.

 

[K4fxd]

Buy the ford performance gt500 oil pan and oil pump combo for less than $800 and sleep easy.

I've seem more threads about bad aftermarket OPG's (all brands) than bad OEM.

 

[Cobra Jet]

There are a couple of very detailed threads already on this topic. MMR is total garbage do not buy their opg for any reason.

Buy the ford performance gt500 oil pan and oil pump combo for less than $800 and sleep easy.

I've seem more threads about bad aftermarket OPG's (all brands) than bad OEM.

^^^^^^^^ best advice…. And adding this in for future reference too.

Here’s some threads that contain factual OPG info, take time to read them, because not all OPGs are the same and yes there have been reported failures with some aftermarket OPG.

https://www.mustang6g.com/forums/threads/mmr-opgs.156369/

If you’re going to attemp OPG/timing yourself, or get a shop to do it, here’s important notes so check the below threads before jumping in without knowledge:

Incorrect timing marks on crank sprockets:
https://www.mustang6g.com/forums/threads/psa-boundary-crank-sprocket-marks-incorrect.146665/

Clearance and other important OPG issues discussed:
https://www.mustang6g.com/forums/threads/check-your-new-upgraded-oil-pump-gears.144427/

Ford Performance OPG notes:
https://www.mustang6g.com/forums/th...erotor-oil-pump-gear-set.160950/#post-3278453

How common the OPG issue is:
https://www.mustang6g.com/forums/threads/how-common-are-issues-with-billet-opgs.168402/

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