1Z/AHU Oil pump replacement and windage tray

TDI-T · Feb 7, 2016

My engine has 168,000 miles on it. Original oil pump. I'm not doing a total rebuild, but I replaced my pan with another style to make it fit my conversion. A new pump came with, but I managed to screw up the threads that hold the pickup tube on the new pump (new tube is different to fit my new pan). I put the new pickup tube on the old pump that previously worked fine. Opinions on this?

Anyone use a windage tray on a 1Z/AHU? I don't really feel like spending the $$ for the tray since I already have a brand new rubber gasket, but I found a couple posts where people recommend them.

Does the rubber gasket oil pan seal need sealant?

Steve Addy · Feb 7, 2016

I would have no problem running your original oil pump with the new pickup, 168k is not that many miles.

My B3V project AHU engine didn't get the windage tray but I did buy one from ECS tuning for the work I need to do on the 97 Mk3 this coming year because I was ordering other stuff and needed a little filler for free shipping. I don't think they're absolutely necessary, they were never specified for either 1Z or AHU by VW, it's just that someone figured out that the OBD1 ABA engine used them so why not use them on the TDI.

I don't use any additional rtv sealant when I install a rubber pan gasket although others might. I might have used a dab where the gasket transitions from the block to the front cover...don't remember.

STeve

TDI-T · Feb 7, 2016

Holy cow. Thanks for the quick response, Steve.

It seems I'm constantly being reminded how gentle I have to be with aluminum. I will try to watch my oil pressure when I get the engine installed just to be safe. I also thought of just putting the old oil pump bottom (that has the holes for the pickup tube) on the new pump.

Now if I can just find that last oil pan bolt.....

TDI-T · Feb 7, 2016

I should probably do the rear seal while I am at this.

Recommendations on best sealing? Teflon or old style? VW or aftermarket?

Steve Addy · Feb 8, 2016

TDI-T said:
I should probably do the rear seal while I am at this.

Recommendations on best sealing? Teflon or old style? VW or aftermarket?

The seal carrier you have right now does not have a serviceable seal installed, at least mine didn't on the 98 AHU and I suspect that my 97 Mk3 doesn't have one either.

On my B3V I purchased the teflon seal that's installed dry and let set.

I could have gone the other route with the old school seal, I have a couple spare housings I could have used but in the end I opted to go with the teflon seal / housing. I think the one I bought was Corteco.

It would be ok to use your oil pump cover plate if it wasn't too warn on the surface, I think...

Steve

oil_me · Feb 8, 2016

I use a windage tray on the Audi/AHU. It's a longitudinal set-up with a 4 qt oil pan. I can think of no reason not to use one.

Steve Addy · Feb 8, 2016

oil_me said:
I use a windage tray on the Audi/AHU. It's a longitudinal set-up with a 4 qt oil pan. I can think of no reason not to use one.

I can think of two reasons why a person might not run one, 1) it wasn't specified by VW and 2) it's 3-4x the money of the gasket alone.

Steve

oil_me · Feb 8, 2016

It's not a luxury item. We add a lot of parts to our cars that didn't come with them but fit. Windage trays have a distinct purpose. I think it's worth every cent for what it does.

Steve Addy · Feb 8, 2016

oil_me said:
It's not a luxury item. We add a lot of parts to our cars that didn't come with them but fit. Windage trays have a distinct purpose. I think it's worth every cent for what it does.

I'm somewhat in agreement with you, it does have a purpose, but to me it is a luxury item when the specified alternative is a quarter of the money.

I've always put a lot of stock in the phrase, "a fool and his money are soon parted," because of things like this. The windage tray is not requisite, it's nice but I wouldn't say necessary.

Steve

GTiTDi · Feb 8, 2016

For any kind of performance build (who doesn't want higher performance out of their tdi? ) do not forego the windage tray.

ToddA1 · Feb 9, 2016

Steve Addy said:
I've always put a lot of stock in the phrase, "a fool and his money are soon parted," because of things like this. The windage tray is not requisite, it's nice but I wouldn't say necessary.

Says the guy with the 6 speed conversion, haha.

-Todd

Steve Addy · Feb 10, 2016

GTiTDi said:
For any kind of performance build (who doesn't want higher performance out of their tdi? ) do not forego the windage tray.

This is the conversion forum, there was never anything said in the preceding posts by the OP about performance or a performance build. I'm not sure more performance is his objective in this case.

ToddA1 said:
Says the guy with the 6 speed conversion, haha.

-Todd

True, but throughout the years I've denied myself so much and since these are likely the last two cars I will ever own it doesn't seem too much of an extravagance to have something that for several years I really wanted...and budgeted for, and was actually convenient to do at this point in time on the conversion.

Steve

BleachedBora · Feb 10, 2016

The factory Bocar Mk3 oil pumps tend to go a lot farther than 168k. Generally it's replace when needed; I get very few requests for them.

Windage trays I get more requests for, but most customers don't even know what they are...

-BB

TDI-T · Feb 15, 2016

Okay, I got one. Here is a pic:

My pan isn't stock so I still need to spin the engine over by hand to make sure nothing is hitting, but it seemed to install fine.

GTiTDi · Feb 16, 2016

Should be fine

designed for E827 blocks, which are all similar.

Yblocker · Mar 18, 2016

Looking for the part number for the windage tray style pan gasket for the 1Z.
Thanks!

oil_me · Mar 18, 2016

I found one # 037115220B.

Yblocker · Mar 18, 2016

Thank you!

rotaecho · Apr 3, 2016

I was told that the oil pan bolts need to be extended to install the windage tray. Anyone have experience to validate that? If so, what P/N bolt did you use for the pan?

Thanks!

50harleyrider · Apr 4, 2016

I have a brand new in package 1z/ahu windage tray I'll sell you cheap! PM me.

Abacus · Apr 4, 2016

I reused the same ones and they fit just fine. Be very wary of the two near the rear main seal since they're threaded into aluminum and not steel. The like to strip when approaching the 15 ft-lbs.

I replaced my oil pump because the keyway at the top was worn down. It still worked fine and I'll rebuilt it at some point down the road. This is what 442,000 miles looks like on the factory pump.

And here is the new oil pump with a 144K mile vacuum pump.

Incidentally, I have always used the proper TDI oil and changed it at 8-14K mile intervals, and there was NO sludge or buildup in the engine or pan. It was as clean as a whistle at 442K miles.

cumminsfromthecold · Nov 11, 2017

1Z TDI oil pump

Thanks Abacus. Those pics are really helpful. Not a lot of info posted on them. I'm replacing the pump on the 1Z Toyota.

jimbote · Nov 12, 2017

15 ft lb is way too tight for a 6mm oil pan bolt, no wonder abacus was stripping em out

...should be 7 ft lb ... even the ALH with the larger 7mm bolts is only 11 ft lb

Abacus · Nov 13, 2017

Where did you get 7 ft-lbs from? I went by the Bentley, which says 15 ft-lbs in multiple areas.

jimbote · Nov 13, 2017

abacus, i can just about guarantee that's a misprint... seen erroneous info in bentley manuals before and i think this is one of em ... 6m bolts are not designed to go 15ftlb ... that is an 8m torque spec, hence why you were stripping em'

Abacus · Nov 13, 2017

Thanks Jim, I've seen a misprint or two myself in the Bentley now that you mention it. It never occurred to me they'd be incorrect. Just to be clear, I wasn't stripping the bolts, but the aluminum threads in the rear main Teflon seal from the oil pan bolts, the rest torqued to 15 ft-lbs with no problem. But, the water pump uses the same bolts and those are specified at 18 ft-lbs. Never had an issue with any of them.

jimbote · Nov 13, 2017

Abacus said:
Thanks Jim, I've seen a misprint or two myself in the Bentley now that you mention it. It never occurred to me they'd be incorrect. Just to be clear, I wasn't stripping the bolts, but the aluminum threads in the rear main Teflon seal from the oil pan bolts, the rest torqued to 15 ft-lbs with no problem. But, the water pump uses the same bolts and those are specified at 18 ft-lbs. Never had an issue with any of them.

i would hazard a guess and say the 8mm water pump bolts are 18 and the 6m are 7ftlb... you'd be lucky if the 6m @ 18ftlb are not necked down now from stretch... not saying that's not what the bentley states but i think it's incorrect ....most, if not all, charts list 6m as max 7 ftlb for a grade 8 bolt ... i'll try and check my old rabbit book tomorrow for info

jimbote · Nov 14, 2017

ok, the rabbit book still lists oil pan bolts @ 15 ftlb ... but the 6m water pump bolts @ 10nm (around 7ft lb) ... i still think the 15 for 6m bolts is gross over torque, especially clamping a steel pan... i'll do some more checking

1Z/AHU Oil pump replacement and windage tray

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