Porsche 911 1977 2.7L CIS Engine Assembly

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  • Опубликовано: 30 янв 2025
  • This engine is built from the case to running. This is the condensed version, and we have some more lessons on restoring the CIS system and setting it up to run right. We also cover the distributor and how to install and set the timing from the first start-up.
    Visit our web site www.klassikats.com
    This engine and the car will be reunited soon, so more set up videos and some fine-tuning with road tests in the near future.
    If you would like to support us on Patreon that would be great
    / klassikats
    Another easy way to help us out is to share, watch, comment, and like a video. This will help us get seen, thanks.
    This video is for entertainment purposes, please Porsche responsibly.

Комментарии • 49

  • @HooliganGarage-650
    @HooliganGarage-650 3 года назад +1

    The way these engines are designed is truly fascinating, six individual air-cooled cylinders and cylinder heads. Your presentation on assembly was excellent, though I don't even own an air-cooled 911, but I promise I will one day.

    • @klassikats
      @klassikats  3 года назад +1

      Yes they were ahead of their time when first designed. Thanks for the kind words and thanks for watching
      Kurt

  • @charleseckberg1947
    @charleseckberg1947 3 года назад +4

    Yet another outstanding episode. Love the content you are producing. Can't wait for the next installment.

    • @klassikats
      @klassikats  3 года назад +1

      Working on some CIS diagnostic! Thanks for watching

  • @chuckglass8849
    @chuckglass8849 2 года назад +1

    Live classes? Sign me up! I have the perfect candidate for a complete rebuild!

  • @saqibnawaz5139
    @saqibnawaz5139 Месяц назад

    Vry Encouraging wonderful 1976 Porsche911 CIS engine rebuild making sure taking specs measurements after machine work guaranteeing reliable engine rebuild for atleast next 100000miles vry great result of hot & cold start smooth as butter is always sure for porche

    • @klassikats
      @klassikats  Месяц назад

      Thanks for watching.
      Kurt

  • @tycotoys
    @tycotoys 6 месяцев назад

    Excellent Video !

    • @klassikats
      @klassikats  6 месяцев назад

      Glad you liked it!
      Kurt

  • @tomschervish
    @tomschervish 3 года назад +1

    Outstanding video. I learned a ton! Thank you.

    • @klassikats
      @klassikats  3 года назад +1

      Glad you enjoyed it!
      Thanks For Watching

  • @herminethewolfyt
    @herminethewolfyt 3 года назад +2

    Hi Kurt,
    I want to replace my intermediate gear as it looks like it ate something in an earlier life.
    I see you can replace it separately but there is no torque info and lock washer p/n as normally its replaced as a complete unit from Porsche.
    By chance do you have the replacement specs?
    Many thanks in advance 🙂
    Steve

    • @klassikats
      @klassikats  3 года назад +2

      Hey Steve, an 8mm bolt has a 25 Newton meter torque. There is an issue with run-out though. You need to measure as you set this up and do not engage the tabs on the intermediate gear until you have it centered.
      Thanks for watching, S

    • @herminethewolfyt
      @herminethewolfyt 3 года назад +1

      @@klassikats Thanks Kurt!

  • @kevinthomas8768
    @kevinthomas8768 Год назад

    Kurt , on these engines ( unmodified) I have read that the piston to valve clearance minimum is 1.5 mm on intake and 2mm on exhaust. That seams so close on an air cooled engine that expands so much. I know that to much distance can increases the possibility of pre detonation. Thanks for you answer in advance.

    • @klassikats
      @klassikats  Год назад +1

      Kevin
      So 1.5 - 2.0 mm is a pretty standard piston-to-valve clearance. Being an air-cooled motor really has minimal impact on that clearance changing. What is more of an issue is the amount of RPM that the engine will turn at and the valve springs' ability to control the valve. I can't see increasing the clearance between the piston and valves having any effect on the likelihood of pre-detonation. If anything, I would expect pre-donation to decrease as compression would likely be reduced by increasing the piston-to-valve clearance.
      Kurt

  • @johnfreeman1189
    @johnfreeman1189 3 года назад +1

    When installing the cylinders. What's your opinion on installing the piston on the cylinders first, then installing the piston/cylinder on to the connecting rod.

    • @klassikats
      @klassikats  3 года назад +2

      John,
      The way I install P&C's is pistons on the connecting rod first. Then the barrel is installed over the piston. This is the way I was trained when I attended the factory Porsche engine school. I have tried the other method and I find it a little tougher to install the complete piston and cylinder together. I also like to feel the connection between the wrist pin and piston. I want to make sure that the wrist pin pivots freely and the piston can move side to side freely as needed. Installing the circlip is also a problem when the barrel is on the piston. Especially because I can't get my circlip injector in and you have to push the circlip in with a screwdriver. This way of installing the circlip creates more of a chance for the circlip to not seat correctly or to have it fall into the engine case during assembly. I find that most people that I have known to assemble the piston and cylinder onto the engine as an assembly only do so because they do not have the factory piston ring compressor.
      In my opinion, I find it much easier and quicker to install the piston first then install the barrel over the piston.
      Thanks
      Kurt

    • @johnfreeman1189
      @johnfreeman1189 3 года назад +2

      @@klassikats Kurt, thanks for the reply.... Much appreciated!

  • @lucase232
    @lucase232 Год назад

    Great content! Where can I get the support brackets for the timing chain and the connecting rods? Never seen them in Germany before.

    • @klassikats
      @klassikats  Год назад +1

      The rod/timing chain support tools are a factory Porsche tool that you can order from your local Porsche dealer.
      Kurt

    • @lucase232
      @lucase232 Год назад +1

      Thank you!

  • @jessemartinez2460
    @jessemartinez2460 3 года назад +1

    keep it up

  • @Bullitt124
    @Bullitt124 6 месяцев назад

    Questions about piston orientation.. do the humps go towards the flywheel on both banks? Some say different. I don't know the correct way. Thanks for your video!!!!

    • @klassikats
      @klassikats  6 месяцев назад

      The valley of the piston should face the spark plug. You can also see the intake valve relief in the lump of the piston.
      Kurt

    • @Bullitt124
      @Bullitt124 6 месяцев назад

      Thank you, Kurt. I'm rebuilding a 1975 2.7 CIS engine thanks to a few books and your videos. Thanks again

  • @GG-uk6mh
    @GG-uk6mh 2 года назад

    Whats the torque on the head cap nuts. What does the head gasket look like on a 2.7. I took mine apart due to broken head studs and i didnt see a head gasket in there when i took the heads off

    • @klassikats
      @klassikats  2 года назад

      GG,
      The tightening torque for the cylinder head nuts is 35 NM, (28 FtLb). The 2.7L engine uses a CE Ring as its head gasket. The ring sits in the groove on top of the Barrel. You will be able to see all of that in our 2.7L assembly video ruclips.net/video/Ezeiu4KpqqU/видео.html
      Thanks for watching

  • @ByronSmith-le4hp
    @ByronSmith-le4hp 9 месяцев назад

    What machine shop do you use for crank case machine work. I'm looking for for someone to do machine work on my 2.7L

    • @klassikats
      @klassikats  9 месяцев назад

      We use Ollies machine in Lake Havasu for the close and hone work. for everything else we do it in house.
      Kurt

  • @r.arabian3056
    @r.arabian3056 3 года назад +2

    I want to attend Classic Automotive Training School!!!

    • @klassikats
      @klassikats  3 года назад +1

      Thanks! Maybe we will have live classes at some point! S

  • @remcotissink
    @remcotissink 3 года назад +1

    Do you take request ? Would be cool looking at the testrig.

    • @klassikats
      @klassikats  3 года назад +2

      Hello Remco, we have been working on our test rig for a while. Running different engines, with varied fuel and electric requirements has helped refine the stand. That is a great idea to run through our setup. We have a carbureted engine on the stand right now and will make a short video soon. Thanks for watching.

  • @danieljourney8188
    @danieljourney8188 3 года назад

    👍👍
    A very good looking 2.7!
    Question about head studs for this application…looked like steel on the intake side and new dilivar on the exh. Is there any harm or benefit to using the new style dilivar on both top and bottom?

    • @klassikats
      @klassikats  3 года назад +2

      Porsche specifies that the normally aspirated engines, (Non Turbo Charged), get Dilavar studs on the exhaust side only and regular steel on the intake side. Now the 930 Turbos get both intake and exhaust sides in Dilavar. This is because the 930 engines generate considerably more heat on the intake side than a normally aspirated engine. Now you could use Dilavar in both intake and exhaust positions on a standard 911, but the cost is substantially more than a standard steel stud. Being that a Dilavar stud is about 3 times more than a steel stud.
      Thanks for watching
      Kurt

  • @svcrucible8303
    @svcrucible8303 9 месяцев назад

    i had a 1974 911S with the 2.7cis and would like to find another. I've built VW's from stock 1600 to 1640, and 1776cc. how big can you go on a 2.7 piston,cylinder?

    • @klassikats
      @klassikats  9 месяцев назад +1

      2.8 to 2.9L although the 2.7L engine case is not really the best candidate for a highly modified engine. I would look for a 3.0L SC engine that is a lot stronger and build something in the 3.4L range as a hot rod.
      Kurt

    • @svcrucible8303
      @svcrucible8303 9 месяцев назад

      @@klassikats thanks for the reply

  • @jesse818
    @jesse818 7 месяцев назад

    Kurt, great video as always. And that is awesome looking engine stand. Where can I get one?

    • @klassikats
      @klassikats  7 месяцев назад

      I made it
      Kurt

    • @jesse818
      @jesse818 7 месяцев назад

      ⁠@@klassikatsis it base on VW 643 stand? Edit: So this crankshaft is from other video. Sorry I got confused with order of video assembly.

    • @klassikats
      @klassikats  6 месяцев назад

      No it is my own design.
      Kurt

    • @jesse818
      @jesse818 6 месяцев назад

      @@klassikatscan I buy one from you?

    • @klassikats
      @klassikats  6 месяцев назад

      its been a while since I made one for some one else. email me at contact@klassikats.com and I will get some prices on the steel and give you a price.
      Kurt

  • @craiged911
    @craiged911 2 года назад +1

    Pretty good but it would be great to hear exactly some of the things you are doing. Example when your torquing various bits it would be great to hear 25 ft/lbs etc. or you mentioned you are using the loctite 574 but not what product you are coating the bearings with. Otherwise pretty good video.

    • @klassikats
      @klassikats  2 года назад +3

      C.E,
      As noted in the description this is a short overview of the engine assembly. For the detail you are looking you we have a playlist of 26 videos titled "How to Rebuild your Air Cooled Porsche Engine" here is the link to that playlist ruclips.net/p/PLkWFofpgz2OjC8YKpkSwygI5Vc7ZP3tZC
      Thanks for watching
      Kurt