2019 Engine Rebuild Comparison RND/FSI/EBS/Vertex
06-06-2019, 02:32 PM
#182
I figured this would be a good time to post part 1 of the video series that I will be doing with your 996. We will add parts to this as the build progresses, to show people what someone endures when they have bore scoring, and what we do to bring life back to the car, and make it so much better.
You can really hear the noise with this one when I back the car up, toward the camera. I shot this with an iPhone 10, and thats just the microphone from the phone picking the noise up that well... Yeah, “sounds like a lifter”...... NO, its NOT!
As we tear down the engine, and it moves through the processes, I’ll post more parts of this adventure, then once complete we will compile all the parts, and make that the volume 8 of the “Focus on Bore Scoring” series.
Here we go... Enjoy!
You can really hear the noise with this one when I back the car up, toward the camera. I shot this with an iPhone 10, and thats just the microphone from the phone picking the noise up that well... Yeah, “sounds like a lifter”...... NO, its NOT!
As we tear down the engine, and it moves through the processes, I’ll post more parts of this adventure, then once complete we will compile all the parts, and make that the volume 8 of the “Focus on Bore Scoring” series.
Here we go... Enjoy!
06-06-2019, 02:41 PM
#183
Excellent series indeed. My car is the subject of a rebuild documentation which is cool. Me famous?...hardly. I just feel fortunate and grateful to be able to send my car to the world's premier Porsche engine guy.
going to be famous...
06-06-2019, 02:45 PM
#184
Just a car guy
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That is a great video. I've heard that sound before. Not on my Porsche, thankfully. That is a distinctive sound.
06-06-2019, 03:23 PM
#186
Former Vendor
Last week a 991 owner with bore scoring had a dealer diagnose the issue.. “You need lifters”. The lifter job was done, at a cost of 8,000 bucks. No dice, noise was still there.... Now they are attempting to change the exhaust lifters, still hopelessly chasing the wrong issue. More wasted money will result.
06-06-2019, 03:50 PM
#188
Awareness that this sound is NOT a “lifter noise” is the key to keep people from wasting money on mis- diagnosed cases.
Last week a 991 owner with bore scoring had a dealer diagnose the issue.. “You need lifters”. The lifter job was done, at a cost of 8,000 bucks. No dice, noise was still there.... Now they are attempting to change the exhaust lifters, still hopelessly chasing the wrong issue. More wasted money will result.
Last week a 991 owner with bore scoring had a dealer diagnose the issue.. “You need lifters”. The lifter job was done, at a cost of 8,000 bucks. No dice, noise was still there.... Now they are attempting to change the exhaust lifters, still hopelessly chasing the wrong issue. More wasted money will result.
Honestly, a couple of years after buying the car I heard the start of the "noise" and pretty much knew what is was from reading your information. I was just in denial!
01-11-2021, 04:16 PM
#189
Rennlist Member
There is a lot of information on this forum (and others) about rebuilding 996 engines, but much of it is several years old or UK-centric. I've spent a considerable number of hours researching options for rebuilding my '99 996 engine and collecting my notes into a comparison spreadsheet. Despite the inevitable arguments that will ensue about various approaches to rebuilding these motors, I'm going to share it to help others who are in my unfortunate predicament.
Some background, caveats, and assumptions:
1. My car has bore scoring which enables/requires different rebuild approaches than IMS or other failure modes.
2. I'm located in Chicago, and shipping costs reflect my location.
3. I decided to only compare engine rebuild specialists and not general shops that offered to do the rebuild.
4. Engine removal & installation costs reflect the best quote I received from a Porsche specialty shop in the Chicago area, but I got quotes for more than twice that amount.
5. I left blank any part replacements I could not confirm. I have detailed proposals from some vendors but relied on public information for others. Which is to say, some of the parts left blank might actually be included in those builds.
M96 Engine Rebuild Comparison Spreadsheet
I'm certainly missing some things in the comparison. Your constructive comments are welcome here, and you can also add comments (but not edit) any of the cells in the spreadsheet.
Some background, caveats, and assumptions:
1. My car has bore scoring which enables/requires different rebuild approaches than IMS or other failure modes.
2. I'm located in Chicago, and shipping costs reflect my location.
3. I decided to only compare engine rebuild specialists and not general shops that offered to do the rebuild.
4. Engine removal & installation costs reflect the best quote I received from a Porsche specialty shop in the Chicago area, but I got quotes for more than twice that amount.
5. I left blank any part replacements I could not confirm. I have detailed proposals from some vendors but relied on public information for others. Which is to say, some of the parts left blank might actually be included in those builds.
M96 Engine Rebuild Comparison Spreadsheet
I'm certainly missing some things in the comparison. Your constructive comments are welcome here, and you can also add comments (but not edit) any of the cells in the spreadsheet.
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wsrgklt (01-12-2021)
01-12-2021, 12:55 AM
#190
I’ve had it for a little over a year and about 2000 miles. So far, so good, but I have it in the shop now for a vacuum leak from the oil filler tube. If I were to do it again, I would replace the oil filler and fuel injectors while the engine was out.
I should post this update to the top of the thread. I’m also trying to take some of what I’ve learned and post it to the web in a more accessible format. I have posted a draft engine rebuild guide at https://wassergekuhlt.online/guides/...rebuild-guide/
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01-12-2021, 09:01 AM
#191
Race Car
The following 2 users liked this post by zbomb:
Mike Murphy (01-12-2021),
wsrgklt (01-12-2021)
01-12-2021, 10:02 AM
#192
Rennlist Member
This is a great thread and I appreciate all the work wsrgklt put into it... right on dude !
01-12-2021, 12:01 PM
#193
Rennlist Member
Balancing the reciprocating parts is very benificial for smoothness,power,& longevity I never build a engine without having everything balanced.
Last edited by Byprodriver; 01-12-2021 at 12:02 PM.
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01-12-2021, 12:22 PM
#194
Rennlist Member
Very true. Why do the heads, IMS, new bearings, new chains, etc and not spend a couple hundred more to balance the rotating sticks and club?
01-12-2021, 12:58 PM
#195
Rennlist Member
^^^ This is one of the big benefits to having a truly experienced engine builder with a proper shop set-up build your engine. This isn't to say you can't do this stuff DIY but it really does create challenges if you don't have a truly professional set-up, and the experience(s) with every step of the build process. The FSI engine build series is certainly a big help, but it doesn't get you the shop or tools...