Oil type and timing chain rattle on start-up

[The Radium King]

part # 26 in the attached link:

Oil Pump

note that it is a 997 part number. it is beveled where the original was square. my understanding (worth what you pay for it on the internet) is that the original was binding, and the role of the piston is to increase oil pressure at start-up. a 5-minute job at your next oil change.

it's an interesting exercise to go through the parts catalog and look for superseded part numbers and 997 part numbers - aos for example ...

[BoxsterSteve]

Thanks! I've got some rattle, maybe this will help.

[steved0x]

Originally Posted by The Radium King

part # 26 in the attached link:

Oil Pump

note that it is a 997 part number. it is beveled where the original was square. my understanding (worth what you pay for it on the internet) is that the original was binding, and the role of the piston is to increase oil pressure at start-up. a 5-minute job at your next oil change.

it's an interesting exercise to go through the parts catalog and look for superseded part numbers and 997 part numbers - aos for example ...

I did this two oil changes ago and it was very easy to do and only a few $$$.

[kjc2050]

Originally Posted by steved0x

I did this two oil changes ago and it was very easy to do and only a few $$$.

Is this readily accessible from the bottom of the engine?

[steved0x]

Originally Posted by kjc2050

Is this readily accessible from the bottom of the engine?

It is, I don't think I had to remove any panels or anything to get to it, I think it was right in front of the sump cover.

I think it was parts 5, 25, and 26 that I replaced from this diagram.

http://www.********************************************.com/porsche-parts/hardparts.php?dir=986-97-04&section=104-00

It was easily accessible from the bottom. And now maybe I am remembering that I did need to remove the rearmost plastic underbody tray... It has been a while

Tightening torque for the bolt (part 4 in the diagram) is 25NM/18FT/LB.

[kjc2050]

Originally Posted by steved0x

It is, I don't think I had to remove any panels or anything to get to it, I think it was right in front of the sump cover.

I think it was parts 5, 25, and 26 that I replaced from this diagram.

Oil Pump

It was easily accessible from the bottom. And now maybe I am remembering that I did need to remove the rearmost plastic underbody tray... It has been a while

Tightening torque for the bolt (part 4 in the diagram) is 25NM/18FT/LB.

Thanks! Appreciate the info.

[san rensho]

Originally Posted by The Radium King

part # 26 in the attached link:

Oil Pump

note that it is a 997 part number. it is beveled where the original was square. my understanding (worth what you pay for it on the internet) is that the original was binding, and the role of the piston is to increase oil pressure at start-up. a 5-minute job at your next oil change.

it's an interesting exercise to go through the parts catalog and look for superseded part numbers and 997 part numbers - aos for example ...

Did that, no change in the start up rattle, but definitely something you should do.