08-25-2011, 12:01 PM
|
#1
|
Registered User
Join Date: Nov 2009
Location: mass
Posts: 731
|
porsche factory rebuilt motors ?
I am looking at a 2000 996 . the car had a porsche factory 3.4 rebuild installed in 2007 due to an IMS failure on the original motor. anybody up here have a factory rebuild installed ? are they as reliable as the original motor ? since it is a 2007 rebuilt motor would it have been upgraded with revised parts ?
|
|
|
08-25-2011, 12:17 PM
|
#2
|
Registered User
Join Date: Mar 2006
Location: Omaha, NE
Posts: 52
|
Rebuilt motors come with 2 year warranties, which is up now, but proves that they stand behind them. In a lot of cases, rebuilt motors are better than originals since they have upgraded parts. However, I'm not sure which upgraded parts would have been installed in 2007 - I don't recall if they were rebuilding with the updated IMS then.
|
|
|
08-25-2011, 12:30 PM
|
#3
|
Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
|
"are they as reliable as the original motor ?"
Yes. No one knows when or if it will fail. 10,000 miles or 100,000 miles, no one can say.
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
Last edited by thstone; 08-25-2011 at 12:32 PM.
|
|
|
08-25-2011, 12:36 PM
|
#4
|
Registered User
Join Date: Nov 2009
Location: mass
Posts: 731
|
we all know about possible failures. i just want the rebuild to have equal odds not less. i was hoping to find out what kind of upgrading porsche did to its 3.4 rebuilt in the 2007 era. I can not find any info.
|
|
|
08-25-2011, 12:38 PM
|
#5
|
Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,273
|
All “factory rebuilt” Porsche engines sold after 1/2006 contains the “final solution” oversized IMS bearing, which has also demonstrated that it still can fail. I'm not really sure this is the type of "revised part" you were looking for. Biggest issue with this engine is that this large diameter IMS cannot be removed without totally disassembling the engine, making an update very expensive at a minimum.
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
|
|
|
08-25-2011, 03:33 PM
|
#6
|
Registered User
Join Date: Nov 2009
Location: mass
Posts: 731
|
would be safe to say this motor is as good or better than the original ?
|
|
|
08-25-2011, 05:26 PM
|
#7
|
Porsche "Purist"
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,123
|
I have over 40,000 miles on a 2005 3.6 factory reman, no issues so far.
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster original owner. I installed used motor at 89k.
1987 924S. 2002 996TT. PST-2
Owned and repaired Porsches since 1974. Porsche: It's not driving, it's therapy.
|
|
|
08-25-2011, 09:04 PM
|
#8
|
Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,273
|
Quote:
Originally Posted by jacabean
would be safe to say this motor is as good or better than the original ?
|
I would say they are equals.
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
|
|
|
08-26-2011, 03:27 AM
|
#9
|
Registered User
Join Date: Aug 2005
Location: Sanford NC
Posts: 2,537
|
While the third IMS was a design introduced in production in 2007
it is my understanding it is possible you have en earlier block with a second generation IMS in it and there is little way of telling without the transmission off.
I do agree the engine is probably as good as and as bad as an originally installed engine...might even be better as Porsche could have used parts introduced from 2000 through 2006 depending when they rebuilt the engine. The problem is we don't know when they actually rebuilt it or when it was pulled for rebuilding or what caused it to be pulled. There is a long pipeline between the production line, the refurbish line, shipping, storage and final shipment to the dealer.
There are stories of the rebuilds having more man hours in them and being better tested than the originally installed engines as they leave the factory but your is long past the infant mortality stage where that should matter.
There are also stories of rebuilds having a mix of parts so that you can't blindly order an internal part until you see which version it actually is as the rebuilder just took the part from the bin of what they were using at the time of the rebuild without any effort to match the part that needed to be replaced with one that matched the rest of the block.
If I were buying I'd be using a song and dance about "numbers not matching so it is less valuable in the future" and "uncertainty of parts revisions" to drive the price lower. Not sure the 996 will be as collectable as earlier ones because of the numbers produced and their excellent rust-proofing provides more survivors so matching probably won't matter.
I wouldn't hesitate to buy if the price/condition/maintenance history was right.
|
|
|
08-26-2011, 07:57 AM
|
#10
|
Registered User
Join Date: Nov 2009
Location: mass
Posts: 731
|
the owner has put 25k on the rebuilt motor and claims it has been flawless. i'm in the process of working on a deal with him , so we shall see what happens. i got to go all the way to Cali to get it and plan on driving it back to Boston.
|
|
|
08-26-2011, 09:07 AM
|
#11
|
Registered User
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,243
|
I have a factory rebuilt 2.5 in my 97, installed in 2004, which now has 35k on it and it's going strong, with the exception of a tiny valve cover leak, which is not unusual for the 2.5's from what I hear.
|
|
|
08-26-2011, 09:33 AM
|
#12
|
Opposed to Subie Burble
Join Date: Mar 2007
Location: Central CT
Posts: 1,197
|
Quote:
Originally Posted by jacabean
the owner has put 25k on the rebuilt motor and claims it has been flawless. i'm in the process of working on a deal with him , so we shall see what happens. i got to go all the way to Cali to get it and plan on driving it back to Boston.
|
Check the jack and the spare before you leave with it if you buy it. Would be a shame to be almost home and catch a flat from one of the infamous potholes (a.k.a. craters) in Boston.
__________________
-O/D
1997 Arctic Silver Boxster, 5-spd
IMSR + RMS
Robbins glass window top
|
|
|
08-26-2011, 09:57 AM
|
#13
|
Registered User
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,709
|
Quote:
Originally Posted by jacabean
I am looking at a 2000 996 . the car had a porsche factory 3.4 rebuild installed in 2007 due to an IMS failure on the original motor. anybody up here have a factory rebuild installed ? are they as reliable as the original motor ? since it is a 2007 rebuilt motor would it have been upgraded with revised parts ?
|
I would say at the least it should have a zero issue RMS & minimal wear on the cylinders & rings which is not the case with most 99-01 3.4's on the road. What part of CA are you picking up the car?
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is On
|
|
|
All times are GMT -8. The time now is 07:10 AM.
| |