1999-2009 [Subscribe to Daily Digest] |
 | [Main 95 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Noisey saab, saga continues with new video Posted by bobc [Email]  (#473)  [Profile/Gallery]
(more from bobc) on Sat, 18 Jul 2020 19:55:27
Members do not see ads below this line. - Help Keep This Site Online - Signup
|
'00 Aero, 133K mi, project car
Continuing from https://www.saabnet.com/tsn/bb/9-5/index.html?bID=282175
To the best of *my* abilities I've pinpointed the noise from the top end in the vicinity of #4. Using a stethoscope the noise was loudest on the exhaust manifold. The noise was prominent on the valve cover and on the intake manifold as well. Every other place on the engine block and pan that I probed I heard only distant, faint tapping or whirring sounds.
Note that I also heard some really loud rough noise on the alternator frame.
Given this we went ahead with a head swap. We removed the head from the donor car and refreshed with valve job, resurfacing, new seals and rebuilt and primed the lifters.
Today we removed the head from the recipient car. We replaced the alternator and the water pump for good measure. Side note: Alternator was a breeze with the head off! And I thought that the water pump would be too ... it's not!
Here are my findings with the head out of the car:
- There was no sign of sludge in the timing area or anywhere. There were no obvious problems (no broken springs, no bent valves.
- the lifters were all hard. there was no travel when they were unloaded. They were all rock hard.
- The valves on #4 looked markedly different from 1,2 and 3. The whole combustion chamber was carboned up, the valves themselves were dark (the others were white). I dont know what to make of this, but it does suggest something is up with #4
- I "rocked" all of the pistons side to side with my fingers. They all had some movement, all pistons had about the same amount of movement. Here is a video of #1 piston: https://photos.app.goo.gl/VkmHR7rxqEts3bJa7
- rocking them front to back (90 deg from that in the video) showed no noticeable movement and no clicking
Questions:
- is that play in the pistons normal?
- Is it a fools errand to put that new refreshed head on this car?
_______________________________________ '08 9⁵ 2.3T SportCombi, Polar White '01 9⁵ Aero Midnight Blue (benched) '00 9⁵ Aero Midnight Blue (rescued) '99 9⁵ Base model, Cosmic blue '00 9⁵ Aero Silver (RIP - transmission )
, Sat, 18 Jul 2020 19:55:27 <-- Viewing This Message, Mon, 20 Jul 2020 14:39:01, Mon, 20 Jul 2020 14:53:09
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
