Page 2 of 2 FirstFirst 12
Results 11 to 12 of 12

Thread: ‘71T 2.2 HP upgrade options.

  1. #11
    Senior Member M_deJong's Avatar
    Join Date
    Jan 2011
    DFW TX
    Quote Originally Posted by geneulm View Post
    if you HAVE to rebuild, there are some pretty proven, reliable combinations that will get you into the 170s and have a very nice motor... and nowhere even close to overmotoring the car. And keeping the case you have w/out boatloads of machine work, twin plugging etc.

    Starting with a 2.4 by adding long stroke crank and rods from a 2.4/2.7

    E or solex cams.

    New 2.2 (still will be a 2.4) piston/cylinder combo to get you into the 9.5 range.

    03-19-2015 08:51 PM
    This is the route I took in my ‘71 searching for more fun... and torque. I had a 2.7 crank and rods so that helped the decision. I went with Biral cylinders bored to 85mm and new 9.5 pistons, which I think are more like 9:1 in use and E cams. Result is a more revvy engine with gobs of torque, but not a high rpm screamer since I kept the small port heads.
    Mike de Jong | PCA - Early S - R Gruppe | '71 911T 2.4 Tangerine | '74 911S 3.2 Ice Green

  2. #12
    Senior Member
    Join Date
    Mar 2013
    Einsiedeln, Switzerland
    I bought a 79 3.0SC engine. Quick and cheap... And then started tuning it. Its now a 3.2SS running 46 PMOs

    Regarding the point about S calipers. Are they actually any better, or just lighter?


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
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.