Porsche 911 Engine Assembly Guide: Part 13 - Removing Freeze Plugs and Lapping Valves

This is Part 13 of the COMPLETE 911 engine assembly series that shows you how to remove the freeze plugs from the head and lap the valves on a Porsche 911 997 engine.
Here is the full playlist for this series: • The COMPLETE Porsche 9...
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I am a Do It Yourself, also known as DIY, mechanic. I am NOT a professional mechanic. I do not have any formal training in the automotive field.
Help Me DIY assumes no liability for anything you choose to do to your car, before, or after watching one of my videos or utilizing the content from this web site.
All DIY repairs or modifications you perform to your car are made at your own risk. Sometimes, even if you've done everything the right way, you can destroy or damage one or more things on your car. You must understand this, but by leveraging knowledge and patience, the probability of encountering one or more problems can be reduced.
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[@gmxe]

I'm glad I came across this video series. I'll be getting my motor rebuilt next year, I'm leaning towards the Hartech process with Slakker, and this series has been great to help me understand all the work that will go into it.

[@HelpMeDIY]

+@gmxe 😎🍻

[@stuntcar]

Great I've been waiting for this 🎉 keep them coming

[@HelpMeDIY]

+Imran Haque hope to! Thanks for watching and commenting 🍻

[@bobrose513]

You pointed to the valve guide and said it was a valve seat. Sorry for picking you up on that Aron.. regards Bob Rose cosworth Northampton uk

[@HelpMeDIY]

+Bob Rose yeah I tend to call things the wrong name while filming, talking, and learning all at the same time 😂

[@bobrose513]

Love what your do mate. I've been following you since the start. And I think your doing fantastic mate. I'm was an engine builder for cosworth and in F1 for ten years. Then had a chance for a few year went back to aviation but then in 2019 went back to cosworth and was building g the engine for Aston Martin valkyrie. Then the Gordon Murray T50 supercar engine. So sorry if I pick on any thing. No disrespect intended. Keep up the great work. Kind regards Bob Rose Northampton UK 🇬🇧

[@HelpMeDIY]

+Bob Rose absolutely no disrespect taken, honored to have you watching and helping the learning journey!

[@eggbertfarnsworth5787]

Havn't done my Porsche heads yet, but back when I did other engines I put a short piece of 1/4" rod in a drill, then put a 4" or so piece of hose over it and then slid the other end of the hose over the part of the valve stem that was sticking out. Left enough room you can move the valve off the seat. I used to spin it until the gray line of paste around the valve became continuous.

[@HelpMeDIY]

+Eggbert Farnsworth yes I saw a lot of people using that method when researching and 90% of the comments were not to ever do that, but 🤷‍♂️

[@eggbertfarnsworth5787]

I wondered about that. It was back around 1974 when I "invented" that method. Now with the internet, I realize I wasn't the first. LOL. Apparently it doesn't pay to overdo it as there is supposed to be an interference angle of about 1 degree between the valve face and seat. I wouldn't hesitate to do it again, but carefully, especially in your case where the suction cups just won't hold. I will admit an automotive machinist once laughed at people who keep the valves organized to maintain their original location in the head as well as lapping them as he claimed if valves and heads are machined, there shouldn't be any need for lapping. One guys' opinion. Not sure if it's true.

[@HelpMeDIY]

@@eggbertfarnsworth5787 your guess is as good (or better) than mine!

[@bobrose513]

Valve comes through the guide not seat. The seat is what you lap the Valve to.

[@HelpMeDIY]

+Bob Rose yes thanks for the correction 🍻

[@kerrylannigan3525]

Did you have the seats recut and the valves reputation as well

[@HelpMeDIY]

+@kerrylannigan3525 no. Valves have a great reputation 😝

[@kerrylannigan3525]

Using way too much compound

[@HelpMeDIY]

+@kerrylannigan3525 probably