Results 1 to 5 of 5
  1. #1

    How much material is removed when comp. is raised?

    I have two different 787 heads that were beaten by bits of rod bearing shrapnel. The pits may be 1/2mm deep on the worst one. So how much material is removed then the heads are machined for higher compression (pump gas and race gas)?

    Trying to figure out if these are worth anything as they are.


  2. #2
    dghal's Avatar
    Join Date
    Jul 2008
    Location
    League City Texas
    Posts
    280
    that actually varies between machinist/engine builders, and the combustion chamber is reshaped as well for squish

  3. #3
    "Tearing it up on the water" seadoobutch787's Avatar
    Join Date
    Nov 2007
    Location
    Michigan
    Posts
    533
    I have a stock 787 head if you decide to go that route, $50 shipped.

  4. #4
    Thats a very inviting price but right now I don't need a head at the moment. Just wondering if these heads are worth anything. Same as the four bad cranks that I have. Although, if I had a good, I would need a head. I have a good set of cases and a good top-end but no head or crank.

  5. #5
    Shoot me a price on the cases? Maybe the top end and what ever other good parts you might have. I need the full electrical system and stuff too. Carbs, intake etc

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. How much RPM you loose when the humitity is 90%
    By CHECK ENGINE in forum 4-Tec Performance
    Replies: 6
    Last Post: 11-08-2014, 07:33 PM
  2. How much faster is the GPR hull????
    By sr71bb in forum 4-Tec Performance
    Replies: 16
    Last Post: 06-25-2007, 10:33 AM
  3. How much speed is taken off??
    By thesepaperwings in forum Polaris Open Discussion
    Replies: 2
    Last Post: 06-22-2007, 02:38 PM
  4. How much louder is the RXP with the IC???
    By LiquidDI in forum 4-Tec Performance
    Replies: 6
    Last Post: 05-22-2007, 09:15 PM
  5. How much money is in YOUR boat.......
    By WATER WOODY in forum Open Discussion
    Replies: 13
    Last Post: 01-24-2007, 06:48 PM

Posting Permissions

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