Page 3 of 3 FirstFirst 123
Results 31 to 36 of 36

Thread: Jeff's 3.8 and 4.2 Projects.

  1. #31
    Join Date
    Feb 2003
    Location
    Tinton Falls, NJ
    Posts
    1,583
    I vote C. It may be more work now, but it would also be more marketable, and if something were to happen to a head, it wouldn’t be such a big deal to get another one.

  2. #32
    Join Date
    Oct 2018
    Location
    Nova Scotia, Canada
    Posts
    32
    Well I ended up going with "A" and picked up another split-port head for the project.

    Since then I have been very busy making various engine building tools and fixtures so that I can do as much of the machining myself as possible. I resurfaced 2 sets of heads, the split-ports and a set of stock (for now) SC heads. Both sets were within a couple of thousands of an inch and probably would have been fine as is but I wanted a fresh sealing surface so I cut just a few thou off of them.

    The deck on the block was bang on from the factory from left bank to right bank but was out 0.005" from the crank centerline so I cut 0.006" off the decks to make them correct. The block, fixture and cutter just barely fit in the milling machine.

    Two of the biggest tool projects were making a block indexing fixture and a cylinder head fixture. As a bonus I am now very well equipped for working on 3.8 and 4.2 Ford V6 parts. I wish I had the gear for boring/honing and line-honing the block. The nearest place to me that can do it is about 4 hours away from me.

    Here is a couple of photos of the completed fixture.



    I didn't have a cutter large enough for the block and heads so I had to make one of them too. I used a carbide insert for the heads and a CBN Wiper insert for decking the block.



    Machining the indexing plate.



    Milling the heads.







    Decking the block.





  3. #33
    Join Date
    Oct 2018
    Location
    Nova Scotia, Canada
    Posts
    32
    I finished making the replacement fuel injector bungs today on the mill. The mill cut the hex and did the bores. Turning them to size and cutting the threads was done in a previous operation on a manual lathe. I am hoping to get the replacement head on the mill to modify them for the injector bungs in the coming days if time allows.


  4. #34
    Join Date
    Oct 2018
    Location
    Nova Scotia, Canada
    Posts
    32
    I found the time to machine the head for the injector bungs today. I will thread them in and epoxy them this evening.




  5. #35
    Join Date
    Oct 2018
    Location
    Nova Scotia, Canada
    Posts
    32
    There was a bit of scoring on the oil pump mounting face on the timing cover so I cleaned up up by taking a small cut on the milling machine.

    The reason for the odd looking before finish is that I had covered the opening with duct tape before I sandblasted it. I then used ear plugs to plug up the hole while machining it.


  6. #36
    Join Date
    Oct 2018
    Location
    Nova Scotia, Canada
    Posts
    32
    I started calling some automotive machine shops to see what it's going to cost to get the block done. The nearest shop is at least a 4 hour drive from me. Ugh, Cape Breton is rich in scenery buy poor in auto machine shops....
    For any other SC enthusiasts on the east coast of Canada here is what the average prices are for getting a block done. All of the shops are pretty much within $50-$75 overall cost so it really comes down to who you like, location, reputation etc.
    All prices are CAD. I am probably going to send it up to either A+J Automotive (aka Armstrong Engines) or Arsenault Cylinder Heads in Moncton when the time comes as both of these places are well known for good work.

    Bore and hone: $260-$350

    Clean and Magnaflux: $75-$100

    Line Honing of the Mains: $150-250

    Decking the block: Around $160 or so. One shop mentioned the cost and I didn't ask the others as I can deck my own block.

    Also, none of the shops have a torque plate for a Ford 3.8/4.2 so I am glad I went ahead and made my own.

Similar Threads

  1. gauges and radio weekend project
    By ndiiorio in forum Non Technical Forum
    Replies: 7
    Last Post: 06-23-2008, 04:29 PM
  2. Replies: 44
    Last Post: 06-15-2008, 07:26 PM
  3. none sc project me and son are doing
    By mannysc in forum Non Technical Forum
    Replies: 1
    Last Post: 02-20-2004, 07:59 AM
  4. What Is The Best Stock Sc To Buy And Have As A Project Car????
    By smokymance in forum Non Technical Forum
    Replies: 6
    Last Post: 12-13-2002, 07:36 AM

Posting Permissions

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