Page 28 of 28 FirstFirst ... 18262728
Results 271 to 278 of 278

Thread: Please allow me to introduce myself.

  1. #271
    Senior Member
    Join Date
    Aug 2009
    Location
    edmond, OK
    Posts
    164
    What a great build! It did take a few libations to get through it all! Hope all is well
    eric

  2. #272
    Yesterday when the car was in for it's first valve adjustment we put the engine on the engine dyno. I have to admit that I was not prepared for the result. The first run showed 236hp at the crank, and subsequent tuning ultimately produced 282.7hp (uncorrected).

    That's with the larger crank pulley for overdriving the fan, so I decided to return to the factory set up once the engine comes off the dyno. Needless to say that I'm quite happy with the end result and the engine makes power exactly the way I hoped it would as opposed to a long stroke.

    Name:  IMG_3324.jpg
Views: 548
Size:  153.7 KB


  3. #273
    Incredible. Can you give us an idea of what kind of tuning was done to find 45 HP during the session? Was it one big thing that was out of whack or a bunch of minor sdjustments?

    You should be stoked. Got a spare gearbox? =)
    Renn-Spot - Cars & parts For Sale - http://renn-spot.blogspot.com/
    1970 911"S" - Black (originally silver)
    1974 911"S" - Silver
    1973 911"T" - Bahia Red - Now Sold
    10 sec 67 VW
    Early "S" Registry #439

  4. #274
    Quote Originally Posted by Cornpanzer View Post
    Incredible. Can you give us an idea of what kind of tuning was done to find 45 HP during the session? Was it one big thing that was out of whack or a bunch of minor sdjustments?

    You should be stoked. Got a spare gearbox? =)
    901 Gearbox + 240hp rear wheel = Bad?

    When they did the initial tune in the car, they were tuning to get the progression from idle jets to main jets to be as smooth as possible. Once on the dyno they determined that 145 mains were required with the 46 PMOs and they needed to advance the timing to find maximum power.

    Then they played with the air correctors and ultimately dialled back some of the timing and settings to get the motor back to a more long term durable spec. Today when the motor's back in the car they'll determine if the mains play nicely with the idle jets or if they need to tweak the idles for better transition.

    From what they've told me most of the power just came from being able to see where the engine was actually happiest and adjusting accordingly. As close as they thought they were, the dyno gave them the hard data to really find where the engine wanted to be.

  5. #275
    Senior Member karlusmagnus's Avatar
    Join Date
    Aug 2005
    Location
    NY
    Posts
    1,498
    One thing I love about downtime and holidays is the time afforded to be able to read back through threads such as this, and disappearing down rabbit holes when you re-read about the little mods and inspirations that have occurred along the passage of time ....

    Mike, I would love to hear about your driving feedback with the new engine, now that you have had time to assess it, rather like a fine wine or port ....
    Karl: E911SR #792 ; RG #420 ; GS #7

    '72T Coupe - Sepia Brown

  6. #276
    Senior Member
    Join Date
    Nov 2003
    Location
    Santa Monica CA
    Posts
    2,041
    for a 2.8 short stroke I would think you have 95X 66 set up right?
    1. Chris-Early S Registry#205
    2. '70 911S Tangerine
    3. '68 911L Euro Ossi Blue

  7. #277
    Quote Originally Posted by raspy2point2 View Post
    for a 2.8 short stroke I would think you have 95X 66 set up right?
    Yep, counterweighted crank too.

  8. #278

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.