Alright, this time I really give up on eliminating start up rattle.

[recycledsixtie]

My 2001 2.7 Boxster has the same rattle on it at cold starting. I have about 40K miles on it. I could easily spend $5-10k on fixing noises and putting in new clutch and ims replacement and rms. But I am not spending that kind of $$$ yet. :dance:

[Meir]

In the 5 chains engines, we have total of 8 pads.
2 pads for each chain that goes from the IMS to the camshafts (parts # 33 X2 and #30 X2)
And another 2 (part # 9 X4), that are seating on the variocam system that holds each set of camshafts.
There is another pad that seats on the chain that connects the crankshaft to the IMS (part 19).
i never read anywhere about replacing this part, but I assume it is the same as the other pads.
The tensioners you replaced (pars # 24,34,35) are basically pressing against the pads, and keeping the chains in the correct tension.
So if the peds are worn out, you will still have “play” with new tensioners. Same goes for the pads on the variocam, held by the timing chain between the 2 camshafts, and part # 7.


There is a great write up at the pelican site

Pelican Technical Article: Boxster Camshaft Upgrade / Chain Tensioner Replacement - 986 / 987

and also a very nice clip on UTube that show how the all system works.
i will try to post it later, together with a link to another interesting thread in that subject.

[Meir]

forgot to attach the drawing :

[Meir]

OK.
this is the tread i was talking about:
Boxster Project 16 : Camshaft Upgrade / Chain Tensioner Replacement - Pelican Parts Technical BBS

and this is the UTube clip:

Porsche Boxster S engine rebuild 08 - YouTube