Rebuilding my 997.1 with bore scoring (shocking, I know!)
09-07-2023, 04:04 PM
#1
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Thread Starter
Rebuilding my 997.1 with bore scoring (shocking, I know!)
I finally decided to tackle this one myself partly because I like a challenge, partly because I love the 997 and want to learn how to rebuild these since they all have this issue and partly because finding a good Porsche mechanic who actually wants to do this job is impossible. Fast forward to now. I went with the quick jacks with the SUV adapters.....pretty good choice for my garage and they work well. The table jack from harbor freight is the best. My brother-in-law helped me get the engine out and my dad (90 years young God bless him) helped me take everything apart. I have the case out getting the bore unscored and will be posting some pictures and videos of our rebuild as we go.
The one thread that I will post with pictures and videos is how to separate the Mercedes automatic transmission from the block......it drove me quite bonkers and there's not a lot on the internet about how to remove this. I did find a thread on here and a couple other places, but it left a lot of room for guessing and I want to make it easier for the next guy. I know, I know....why an automatic? Well, like it or not about half of the 911 buyers either can't drive a stick (for either health reasons or never learning) or just don't want to shift their own gears. Sacrilege. In case you are wondering, the car is a 2005 Porsche 911 Carrera 3.6 with only 53k miles on the odometer. And it was rapping like 50 cent when I bought her (you could call it a tick, but it was a pretty loud tick) I was hoping it was a broken exhaust manifold, but no such luck. At least we caught it before it blew up. I'm posting a link to the videos on here of the bad cylinder so you can see what it looks like. It's just cylinder 6 and the other ones look unscathed.
Let me know if there's anything you want to see and I'll try and get a picture or video for you.
Pete
The one thread that I will post with pictures and videos is how to separate the Mercedes automatic transmission from the block......it drove me quite bonkers and there's not a lot on the internet about how to remove this. I did find a thread on here and a couple other places, but it left a lot of room for guessing and I want to make it easier for the next guy. I know, I know....why an automatic? Well, like it or not about half of the 911 buyers either can't drive a stick (for either health reasons or never learning) or just don't want to shift their own gears. Sacrilege. In case you are wondering, the car is a 2005 Porsche 911 Carrera 3.6 with only 53k miles on the odometer. And it was rapping like 50 cent when I bought her (you could call it a tick, but it was a pretty loud tick) I was hoping it was a broken exhaust manifold, but no such luck. At least we caught it before it blew up. I'm posting a link to the videos on here of the bad cylinder so you can see what it looks like. It's just cylinder 6 and the other ones look unscathed.
Let me know if there's anything you want to see and I'll try and get a picture or video for you.
Pete
09-07-2023, 05:36 PM
#3
Rennlist Member
Thread Starter
There is an adapter plate that attaches the transmission to the block that interferes with the clearance of the bellhousing bolts, so you do not have enough room to fit a wrench or socket. You have to take off the transmission before you can remove the adapter plate. Since they are Torx I tried a torx key, but the only one I could find was too long. I ended up getting a tork bit and putting a 3/8 wrench on the end which worked but took forever to get out.
09-07-2023, 05:59 PM
#4
Wow! Way to roll up your sleeves and dive in
Good luck with the project. I look forward to following your progress.
Good luck with the project. I look forward to following your progress.
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Petethecarman (09-07-2023)
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09-07-2023, 08:07 PM
#6
Three Wheelin'
There is an adapter plate that attaches the transmission to the block that interferes with the clearance of the bellhousing bolts, so you do not have enough room to fit a wrench or socket. You have to take off the transmission before you can remove the adapter plate. Since they are Torx I tried a torx key, but the only one I could find was too long. I ended up getting a tork bit and putting a 3/8 wrench on the end which worked but took forever to get out.
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Petethecarman (09-07-2023)
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09-07-2023, 10:13 PM
#9
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Thread Starter
My dad was telling me the same thing while I was busting my knuckles, Yelcab. Hopefully I'll get a set for Christmas or Harbor Freight will send me a super coupon LOL!
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Petethecarman (09-08-2023)
09-08-2023, 08:13 AM
#11
Rennlist Member
What do the coatings on the skirts of all 6 pistons look like? Are they all intact except for cylinder 6 or are others flaking off?
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Petethecarman (09-08-2023)
09-08-2023, 10:42 AM
#13
Rennlist Member
FWIW, I listened to the LN Engineering ZOOM yesterday about Jake Raby-LN partnership and the new concept for his rebuilds. Mostly all sales (ugh), BUT he did mention how popular his STEP BY STEP rebuild video series is. Designed to play-pause-DIY1-play-pause-DIY2 etc. Expensive at $600+ but may be a good guide especially when it comes to the bore treatment.
Jim
San Francisco
Jim
San Francisco
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Petethecarman (09-08-2023)
09-08-2023, 01:50 PM
#14
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Thread Starter
The coating on the other pistons are good, sburke91. I'm not sure if I should just replace them all or just the one. I'm going to take them to a local machine shop and get his opinion and go from there.