How to fix bore scoring in your Porsche's M96/M97 engine | 4 of 4

30k is a lot of money though ! At that point, I might as well buy a turbo 😂 Thanks for the great info, much appreciated.

I worked for a shop in Canoga Park, CA from 2016 to 2021 that specialized in rebuilding and tuning all Porsche engines and a bit of other brands too. We would send blocks to IL for aluminum sleeving and coating but it took ages because some times a process weren't perfect and would need redoing. We ended up having a shop in Anaheim, CA install steel sleeves which worked great. Sleeving would add $5,000 to the build bill if only increasing volume by 200cc. If increasing volume by 400cc it required a $1,000 - $2,000 retune. End result bringing an M96/97 to 4.0 or 4.2 liters with forged race pistons for maximum $20k made for a very sweet engine that would last a very long time. Unfortunately the shop owner is now dead so no more deals like this. ARP rod bolts are a must on any engines over 2.5 liter. Boxster 2.5 liter engines just got new stock bolt. RIP Tiger.

Thank you Charles, Lake, Mark and Vu, the series was VERY informative!

Great series!! I’ve been watching as many videos as I can and been reading forums posts for years about this topic and still learned a ton. Glad it’s all in one place to reference for everyone. I really appreciate what Charles, Lake and the like have done for the community. When my time come, hopefully this route is an option for me.

Great great video saga... Great explications! I'm clear now that the car I just bought last friday is affected. 1st registration on July 1999 in Spain 996 C4 manual with 82k miles, it's already running rough and super rich due to a vacuum leak so the autodestruction process began. who knows when it started to run rough before my buy. Unfortunately after watching these videos I decided to sell it or bring it back to the last owner as I can't live with such a worry about having a ticking bomb behind me. My dream of 25 years ago has turned out to be my nightmare. Thanks PCA for having this excellent explication about M96 and m97 engines!

I watched all four parts and learned so much, thanks for this great educative series.

Charles , Lake and Vu, Thanks again for another great in-depth series....On "Why" "How" and What..!

Absolutely great video series. Good to give guidance on what to do, look out for, and how to handle if it happens. There's a very small part of me that, upon "Post Purchase Inspection" is kind of hoping to find it so I can rebuild my 07 Targa4S to a 4.0! I'll start the fund now...

Very helpful indeed.With this great info supplied one can now shop around with more caution.Personally I would go for the 997 Gen II now.

Another really outstanding video. Thanks so much. My 996 is running beautifully, and luckily, I've been using top tier fuel. It's also good to know what the cost of a new better motor might be. Really great!!

Great job PCA on this series. One 'little' part of me though thinks that these guys just want to scare people into generating business for themselves. I have a 987 Cayman (68k miles) which I maintain to factor service intervals and drive. Previous comment on episode 3 said halfing factory intervals, really!

I am planning to buy myself a clean low mileage Cayman as a retirement gift in a couple of years. These kinds of tech oriented videos are very helpful for the Porsche newbee. Thanks much.

Excellent content. Shame that such a reputable car company can't produce a durable engine...

There needs to be more acceptance in the Porsche community for motor swap with more reliable motors. Proud owner of a Cayenne with a VW 3.2l motor. No bore score and turbo ready!

Well done, great series, would love to hear more on 987 Cayman diffs.

You make so much great content, thanks for sharing with the rest of the world. :-)

Enjoy very much watching an educational series on these M96/97 engines! I purchased a 996.2 base Carrera 2 years ago, and the dealer was reluctant to allow a PPI. The car was in such good condition I decided to roll the dice. Now with 75K miles I`m trying to decide if I should have an IMS installed at the same time an AOS, injectors. possibly a timing chain or 2 and tensioners after finding a bronze colored piece of plastic in the oil. I`ve had 1 oil analysis performed with results of caution(silicon@ 25 ppm). Once again I find myself rolling the dice thinking it better to rebuild to a 4.0. Call me insane cause I think I`ll still love this car!!

Great series!

Great series - thanks!

Well done! Thanks for the information!