KVDR

I must have accidently ordered the non-turbo water-pump which does not have the turbo thermostat port.

Has anyone drilled/machined this before?

mahoney944

I've never seen a updated one not machined. The plastic nipple that bolts there comes sealed just for that reason. You have to drill the nipple for turbo cars and leave it sealed for non turbo cars

But if you mill it flat, drill and tap the bolt holes you should be fine. The port hole is just a hole, the oring groove is on the fitting that bolts there. ....might be easier to return it for the right pump.

Tom M'Guinn

Wow, is that a LASO brand pump? I'd be inclined to get one ready for turbo use rather than risk getting shavings in there and not being sure if you're changing the amount of flow, etc. Just seems like unneeded risks to me, but I'm risk adverse.

KVDR

This is a new aftermarket pump, says URO Parts on the casting.

It's tempting to drill it out. Everything looks near identical to the LASO one that came off the car.

KVDR

Also, I discovered that whoever installed the water-pump 10 years and 20k ago didn't modify the turbo thermostat housing. No flow! I wonder how detrimental this has been on the turbo.

Paulyy

With the stock turbo? it'll survive. mine had the same.
I didn't realise either until i took the engine apart and replaced the water pump that i've been running my garret dry.

mahoney944

You see that alot on these cars. I don't think garages notice that when installing one, plus the auxiliary pump still pumps coolant from the jug through the turbo. You just don't get the constant flow from the main pump. This is also a good reason why switching to a dry turbo is not such a bad idea. A few of you out there probably have your water pumps blocked off and don't even know it. All that plumming for not.

Voith

Cool turbo is a happy turbo.

Paulyy

Can't say much about the quality of URO parts..

KVDR

I just need this URO water-pump to last 6 years or ~20,000 miles. Normal driving.


Reasonable?

KVDR

Maybe a bit late, but I figure I should update this thread.

Yes, the non-turbo URO waterpump can easily be modified to work for the turbo cars.


I mounted it to a board to protect the gasket face and use as a fixture while drilling.



Relief for impeller.



Sacrificed old nozzle for locating holes.



Drilled and tapped second bolt hole. The pump came with one for free.



Not the ideal drill bit, but I had it laying around.



I wish I'd taken a picture inside of the hole, but it does match the LASO pump I'm replacing.


I've since reinstalled the waterpump and driven ~400 miles. Works - no leaks! I suppose the unknown is the quality and how long it'll last.

ramius665

Curious how much you paid for the Uro pump? I just purchased a rebuilt pump kit from Porsche for $175 and it came with all new hardware, new block off plate, new thermostat and gasket.

KVDR

I ordered the URO NA pump from 944Online for $150.

It certainly wasn't my original plan to modify a waterpump and save a few dollars.