Results 1 to 8 of 8

Thread: cam and piston question

  1. #1

    cam and piston question

    I started to strip my 69 2.0t engine.. I was told that it has E cams and pistons .I will CC the piston domes tomorrow. Any one know what the different cc for the T-E-S pistons are?

    Cam markings are 901 105 109 01 and 901 105 11 01. Production dates 23966 and 16766. From what I can find these are out of an early 2.0 litre. On the front of the cam both have 05 stamped. Are these solex cams? Before taking apart I checked the overlap left 2.6 and right 2.8. I found info on the forum that these should be 4.2-4.6?

    thanks Jake

  2. #2
    Member #226 R Gruppe Life Member #147
    Join Date
    Feb 2009
    Location
    Portland, Oregon
    Posts
    2,161
    Are the cylinders cast iron or do they have Alu fins?

  3. #3
    aluminum cylinders

  4. #4
    cc'ed the piston dome and head, I have 9.4:1 compression.

  5. #5
    Senior Member
    Join Date
    Oct 2008
    Location
    Burford, ON, Canada
    Posts
    4,034
    That does not sound like a T engine anymore. This could be interesting. On the inside of the pistons, up in the dome, there are casting numbers. This would help identify the pistons. The heads also have casting numbers an marks plus date codes. Can you provide photos of each?
    Porsche Historian, contact for Kardex & CoA-type Reports
    Addicted since 1975, ESR mbr# 2200 to 2023 03
    Researching Paint codes and Engine Build numbers

  6. #6
    cyl head 901 104 306 2R --valves 42/38--32mm ports, look like stock T heads

    piston--80V79 C011 E25

    Name:  IMG_3067.jpg
Views: 59
Size:  131.7 KB

    Name:  IMG_3070.jpg
Views: 58
Size:  112.4 KB

    Name:  IMG_3071.jpg
Views: 56
Size:  53.0 KB

  7. #7
    Senior Member
    Join Date
    Oct 2008
    Location
    Burford, ON, Canada
    Posts
    4,034
    it is reported that those are 911E pistons with 9.1 compression. Did you have the correct deck height when measuring?
    Porsche Historian, contact for Kardex & CoA-type Reports
    Addicted since 1975, ESR mbr# 2200 to 2023 03
    Researching Paint codes and Engine Build numbers

  8. #8
    could be how I sealed the piston to cylinder. I use a light sunroof grease to seal. might account for the difference. Base copper seal was 0.3mm.
    thanks for the help Dave.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Message Board Disclaimer and Terms of Use
This is a public forum. Messages posted here can be viewed by the public. The Early 911S Registry is not responsible for messages posted in its online forums, and any message will express the views of the author and not the Early 911S Registry. Use of online forums shall constitute the agreement of the user not to post anything of religious or political content, false and defamatory, inaccurate, abusive, vulgar, hateful, harassing, obscene, profane, sexually oriented, threatening, invasive of a person's privacy, or otherwise to violate the law and the further agreement of the user to be solely responsible for and hold the Early 911S Registry harmless in the event of any claim based on their message. Any viewer who finds a message objectionable should contact us immediately by email. The Early 911S Registry has the ability to remove objectionable messages and we will make every effort to do so, within a reasonable time frame, if we determine that removal is necessary.