Cam plate swap

Discussion in 'Engine, Fuel and Exhaust' started by Kaycee, Jan 31, 2012.

  1. Kaycee

    Kaycee New Member

    4
    0
    0
    I have a 05 FXDWG and am wanting to remove the spring tensioners,I have a friend who has a 07 cam chest that he replaced when he did a 107 kit.Can this plate/pump set swap over into my 05.are athe bearings holes the same or ???:panic Thanks for your time
     
  2. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

    4,633
    83
    100
    Should work. But change out the inner and outer bearings (use the Torringtons on the inner, NOT the INA from HD). You may want to consider cams if you are going to all this trouble. And consider adjustable PRs. See here:

    Roller Chain Conversion white paper

    http://www.hdtalking.com/harley_davidson_engine_related_issues/25220-roller_chain_conversion.html

    TQ's Engine Build

    Harley Davidson Community

    TQ
     
  3. Kaycee

    Kaycee New Member

    4
    0
    0
    Yeah I was going to change all that out push rods are on the way,I just have a great deal for an upgrade.Just want to make sure it will fit Thanks for your time
     
  4. R.Bingham

    R.Bingham Active Member

    317
    0
    4
    You will have to change out your cams to do this upgrade. They are called "Conversion Cams". These have the 7/8" inner journals required for the older cases and the outer journals for the new style cam plate.

    I suggest the Andrews 48N conversion cam since your bike is an 05. 2005 was the first year that the Twin Cam heads came with the "bee-hive" valve springs. These springs will accommodate up to .575" lift cams. 99-04 heads can only accommodate up to .510" lift cams.

    The 48N cam will give you the most torque available for a bolt in cam on your TC 88. The .548" helps carry that power out nicely too. :rider

    You might read this this thread.
    2006 Dyna Low Rider Cam Upgrade - Harley Davidson Community
     
  5. Kaycee

    Kaycee New Member

    4
    0
    0
    OK Thanks for the advice I asked Andrews on what cam, and they suggested a 26,kinda thought I had it narrowed down on what I wanted now I don't know:newsmile030: This is the first I heard of it accepting a 575 lift,all this time I thought 510 was my max.I guess it is good news ,Thanks for the Help I'll look at the 48 and re-evaluate this I guess this plate/pump setup will limit the cam choice 's
     
  6. TQuentin1

    TQuentin1 Well-Known Member Staff Member Moderator

    4,633
    83
    100
    Kemo put the 26 grind cams in his bike when he did the roller chain conversion. I went with the 21s. His take off a little higher then mine and last further up the rpm curve. Mine come on a little lower. I was looking for more low end torque. I think both of us are happy with our selection of both cams and upgrade kits.

    TQ
     
  7. R.Bingham

    R.Bingham Active Member

    317
    0
    4
    Here is a link to a 23 page report for a TC head flow bench study.
    http://neverworld.net/socalnetscum/files/tech/HD_TC_IntakeFBStudyRel1.pdf

    Here is the summary of the differences between the heads. (If you want the flow numbers you will have to read the report.

    ’99-’04 TC Head

    The heads on TC engines from 1999 to 2004 were from the same casting. These heads
    came with 5/16” valve stems with 1.85” intake valves and 1.565” exhaust valves
    controlled by coil springs with about a .510” cam lift limit when using stock rockers.
    The last digit of the casting number for these casting heads is -99.

    ’05 TC Head

    The heads were from the same casting as the previous years, but they came with smaller
    7mm valve stem with 1.805” intake valves and 1.575” exhaust valves controlled by beehive
    springs which could accommodate higher than .510” cams. Although, there is no
    additional flow potential as cast with the greater lift ability.

    ’06 and up TC Head

    Starting the 2006 model year, the head casting changed. The intake and exhaust ports
    were re-shaped and the stock head flow potential was improved from the earlier -99
    castings. These new castings were paired up with the smaller 7mm valve stems and beehive
    springs introduced the previous model year. The intake manifold mounting area also
    changed between the -06 castings and earlier. To use these heads on pre-2006 Twin Cams
    newer style manifold clamps must be purchased.

    With the exception replacing the old style intake manifold flange to the newer symmetric
    flange 26993-06, the -06 casting heads are a direct bolt on as a replacement for the
    previous castings.

    I hope that clears things up for you.
    Randall