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Old 01-03-2017, 02:31 PM   #1 (permalink)
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Default Porting oil pump on d15b7

Does it even do anything or have any beneficial effect on the b7's?
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Old 01-04-2017, 04:56 AM   #2 (permalink)
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The same as any other pump ported, getting rid of any sharp edges and smoothing the port is always good for a pump. I wouldn't shim it though.
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Old 01-04-2017, 05:56 AM   #3 (permalink)
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The same as any other pump ported, getting rid of any sharp edges and smoothing the port is always good for a pump. I wouldn't shim it though.
I second this. Just smoothing it out and giving the oil a clear path to the oil passage in the pump will suffice. Shimming it isn't necessary
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Old 01-04-2017, 04:29 PM   #4 (permalink)
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I guess it depends on what else you're doing.
On its own, you'll notice nothing; as part of a raft of changes, it might just be of benefit.
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Old 01-05-2017, 12:32 AM   #5 (permalink)
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The motor is built and turbo. The pump is ported already (just the hole to the block because try as I might, I couldn't get those screws out) but it's old so I was thinking about getting a new one and trying again but didn't want to waste the time and effort if it didn't really do anything.
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Old 01-05-2017, 03:04 AM   #6 (permalink)
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Originally Posted by anomolix View Post
The motor is built and turbo. The pump is ported already (just the hole to the block because try as I might, I couldn't get those screws out) but it's old so I was thinking about getting a new one and trying again but didn't want to waste the time and effort if it didn't really do anything.
I couldnt get those screws out as well. I used an impact driver *WARNING* You can crack the oil pump gear cover using an impact driver. then i bought a new one and was able to remove them without a driver.
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Old 01-05-2017, 02:36 PM   #7 (permalink)
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That's what I was thinking and hoping would happen. I guess I'll give it a shot.
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Old 01-06-2017, 04:17 AM   #8 (permalink)
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I've found that if you try and remove those countersunk bolts by hand with a phillips, you have almost a 50% chance of rolling over the edges on the cross feature.

I've had much more success (like 80-90%) with a cordless drill and largest phillips bit I could stick in the head of those bolts.

I've had 4 d-series oil pumps apart and only 2-3 bolts across all of them have been easy to remove. Guess the heat contraction/expansion is bad there.
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Old 01-06-2017, 05:45 PM   #9 (permalink)
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Looks like I just need to get a humongous Phillips and give it a shot. New pump is on the way so I'll see how it goes with that one.
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Old 01-07-2017, 08:45 AM   #10 (permalink)
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The largest phillips bit you can stick in there will work . . . obviously you can go too big.

I think the main benefit from using a drill (or impact to remove?) is that you can push all of your weight into the pump whereas with a screwdriver you are using some weight/energy to also twist the handle.
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Old 01-07-2017, 08:33 PM   #11 (permalink)
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I tried again on my old pump and just screwed up the slots more. I'm going to find a huge Phillips bit and stick it in a 6mm socket and try to use a ratchet like a bit driver so I can get more leverage.
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Old 01-08-2017, 12:41 AM   #12 (permalink)
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Just drill them and after the porting use new screws. Use a center, to gently hummer the Phillips screws, so they don't brake your drill bit(8mm iirc). It comes out perfect.
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Old 01-22-2017, 08:35 PM   #13 (permalink)
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Use the right size bit and a ratchet to get more torque and less chance of stripping the screw.
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Old 01-22-2017, 11:54 PM   #14 (permalink)
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Use the right size bit and a ratchet to get more torque and less chance of stripping the screw.
Yeah, I figured that out. Bit driver for the win
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Old 01-23-2017, 09:02 AM   #15 (permalink)
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In the past I used my largest driver that would fit the screw that was a hex-shaped shaft. Gave the butt end of the driver a mild smack to seat it, then used a locking pliers on the driver shaft to turn the driver thus turning the screw.
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Old 01-23-2017, 08:36 PM   #16 (permalink)
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If you can swing it, get a D16A6/D16Z6 oil pump and don't bother with porting or shimming. It'll flow just fine on a B7 with a turbo and an oil cooler even. FWIW pressure isn't made at the pump; volume is.
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Old 01-23-2017, 09:34 PM   #17 (permalink)
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I'll keep that in mind for the future.
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Old 02-03-2017, 09:08 AM   #18 (permalink)
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Yall ever freeze the heads w canned air to shrink it up before trying?
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