Anyone done a preventive IMS and water pump on a 997?
Thread Starter
|
Registered User
Joined: Oct 2011
Posts: 217
From: Canada
Rep Power: 23
Anyone done a preventive IMS and water pump on a 997?
Just got an '08 C4S cab to go along with a Panamera 4S.
My mechanic advises doing a change of IMS and water pump -- a la Jake Raby. He says the car will then be bullet proof.
IMS failure he says = not if, but when>
Apparently, the gen. II, 997 still has a double IMS bearing but can still have the same seize up problem, so he says...
My mechanic advises doing a change of IMS and water pump -- a la Jake Raby. He says the car will then be bullet proof.
IMS failure he says = not if, but when>
Apparently, the gen. II, 997 still has a double IMS bearing but can still have the same seize up problem, so he says...
Registered User
Joined: May 2009
Posts: 530
From: NJ
Rep Power: 45
The larger bearing in the 2006-2008 engine is proving to be very reliable. If you read the forums you will find that there continues to be some folks who replace the earlier bearing with the aftermarket "upgraded" bearings. Theses individuals often note that the original bearing is in great condition upon removal ( often after 40-70K miles). I believe the aftermarket bearings are recommended to be replaced at about 30K miles.
I have observed that Excellence magazine has gone from what I consider an alarmist position on the IMS bearing and water pump to more cautious statements on replacements. They have recommended that you replace the seal in the bearing to allow oil to flush out the grease with splash lubrication. Now they indicate how extremely rare a 2006-2008 bearing fails. Also, they have indicated in the past that teh water pump should be replaced every 40K miles or 4 years. Now keeping an eye on leaks and an ear on sounds as the way to prevent major problems. It's your car so it is your choice on how to proceed. I would do more research on both issues before spending $$$$. By the way, there is no such thing as a "bullet proof " engine or car.
I have observed that Excellence magazine has gone from what I consider an alarmist position on the IMS bearing and water pump to more cautious statements on replacements. They have recommended that you replace the seal in the bearing to allow oil to flush out the grease with splash lubrication. Now they indicate how extremely rare a 2006-2008 bearing fails. Also, they have indicated in the past that teh water pump should be replaced every 40K miles or 4 years. Now keeping an eye on leaks and an ear on sounds as the way to prevent major problems. It's your car so it is your choice on how to proceed. I would do more research on both issues before spending $$$$. By the way, there is no such thing as a "bullet proof " engine or car.
Thread Starter
|
Registered User
Joined: Oct 2011
Posts: 217
From: Canada
Rep Power: 23
The larger bearing in the 2006-2008 engine is proving to be very reliable. If you read the forums you will find that there continues to be some folks who replace the earlier bearing with the aftermarket "upgraded" bearings. Theses individuals often note that the original bearing is in great condition upon removal ( often after 40-70K miles). I believe the aftermarket bearings are recommended to be replaced at about 30K miles.
I have observed that Excellence magazine has gone from what I consider an alarmist position on the IMS bearing and water pump to more cautious statements on replacements. They have recommended that you replace the seal in the bearing to allow oil to flush out the grease with splash lubrication. Now they indicate how extremely rare a 2006-2008 bearing fails. Also, they have indicated in the past that teh water pump should be replaced every 40K miles or 4 years. Now keeping an eye on leaks and an ear on sounds as the way to prevent major problems. It's your car so it is your choice on how to proceed. I would do more research on both issues before spending $$$$. By the way, there is no such thing as a "bullet proof " engine or car.
I have observed that Excellence magazine has gone from what I consider an alarmist position on the IMS bearing and water pump to more cautious statements on replacements. They have recommended that you replace the seal in the bearing to allow oil to flush out the grease with splash lubrication. Now they indicate how extremely rare a 2006-2008 bearing fails. Also, they have indicated in the past that teh water pump should be replaced every 40K miles or 4 years. Now keeping an eye on leaks and an ear on sounds as the way to prevent major problems. It's your car so it is your choice on how to proceed. I would do more research on both issues before spending $$$$. By the way, there is no such thing as a "bullet proof " engine or car.
I thought that once the IMS goes, you don't drive an inch and hope for the best. But rather than an extended warranty for $3k, you'd think the money would be better spent on the ims re-do...
this '08 I just bought has only 24,000mi. so I'd be happy to save the $$ for a while...
Just wonder how many guys have had issues with this....
Registered User
Joined: Aug 2009
Posts: 267
From: VA
Rep Power: 29
Trending Topics
Thread Starter
|
Registered User
Joined: Oct 2011
Posts: 217
From: Canada
Rep Power: 23
Ha!
This is good to hear.
I had a new 2006 C4S cab that blew blue smoke at 55kms. (34,000 miles).
On this '08 that I got, I figured it's got to be pretty good with only 24,000 miles on it..... then started thinking IMS = new engine!
So that begs the question,....... did they really improve things after '05/'06, and get it right by '07/8.
The Porsche preowned guys in Canada say buy a Gen. II. but I've heard they can have the same problems.. (is that true?)
This is good to hear.
I had a new 2006 C4S cab that blew blue smoke at 55kms. (34,000 miles).
On this '08 that I got, I figured it's got to be pretty good with only 24,000 miles on it..... then started thinking IMS = new engine!
So that begs the question,....... did they really improve things after '05/'06, and get it right by '07/8.
The Porsche preowned guys in Canada say buy a Gen. II. but I've heard they can have the same problems.. (is that true?)
Registered User
Joined: May 2010
Posts: 169
From: Bay SHore, LI, NY
Rep Power: 23
The bearing is larger but still filled with grease and sealed, so it is can have the same problem. The seal will eventually leak, letting oil in which will wash out the grease. Then it runs semi dry and will eventually fail.
Removing the seal will let more oil in to lubricate the bearing but who knows how much? Dirrectly feeding the bearing with fresh oil will prevent the problem, unfortunately you have to remove the trans to install and it becomes a costly project.
My bearing was leaking, so I had to remove the trans to check out what it was, while I was there I figured I might as well add the oil feed.
If the larger bearing was fool proof, why did Porsche eliminate it in the next version, the DFI motor.
Removing the seal will let more oil in to lubricate the bearing but who knows how much? Dirrectly feeding the bearing with fresh oil will prevent the problem, unfortunately you have to remove the trans to install and it becomes a costly project.
My bearing was leaking, so I had to remove the trans to check out what it was, while I was there I figured I might as well add the oil feed.
If the larger bearing was fool proof, why did Porsche eliminate it in the next version, the DFI motor.
Registered User
Joined: Aug 2014
Posts: 17
From: Camas, WA
Rep Power: 0
The water pump on my 08 T4S failed at 60k as my mechanic says is the typical useful life. Replaced the water pump on aftermarket warranty and also did the belt tensioners at the same time. Regarding the IMS issue. Purchased the LN Eng. spin on filter adapter and magnetic oil pan plug to monitor engineer wear. Also put a magnet on the oil filter. The engine oil has been looking good for the last 20K. I change to oil every 5K.
Registered User
Joined: May 2010
Posts: 169
From: Bay SHore, LI, NY
Rep Power: 23
It is impossible to check the bearing without removing the seal, just looking at it tells you nothing. Even if you remove the seal there is a metal cage that holds the bearing ***** and you can only see a very small portion of the ***** and race.