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Thread: Working on my Dakota build

  1. #26
    BIGROB's Avatar
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    Looking good Wiggsy

    Project Maverick. I feel the need, the need for speed

  2. #27

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    Even brand new valves go to the valve grinder so we can confirm angle and make sure they're concentric.
    [IMG][/IMG]

    Whiplash Engine & Machine, FRP Tuned
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  3. #28

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    I bet it feels like a kid counting down the days until Christmas

  4. #29

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    Quote Originally Posted by Wiggsy72 View Post
    Even brand new valves go to the valve grinder so we can confirm angle and make sure they're concentric.
    [IMG][/IMG]
    You having your heads cut multi angle Wiggsy? Do at least a 3 angle while he's at it. Chamfered valves also improve flow. Allow valve margins for no less .050 for intakes and .080- .090 for exhausts.

  5. #30


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    So, has your guy calculated compression ratio? With pistons that high I am curious??
    99 DA CC R/T
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  6. #31

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    Yes he is doing the three angle grind.

    Static compression ratio is at 10.2:1

    Stock deck to piston is about 0.060" in the hole and the gasket approximately 0.044"

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  7. #32

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    You're using KB pistons, correct? What part #? That should be a good cr for pump gas. Anything milled or decked? Great thread btw. I love the play by play at the machine shop. You rarely get to see that.
    Last edited by wdh681; 04-28-2017 at 11:34 AM. Reason: Punctuation

  8. #33

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    Following with interest

  9. #34




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    Quote Originally Posted by Wiggsy72 View Post
    Yes he is doing the three angle grind.

    Static compression ratio is at 10.2:1

    Stock deck to piston is about 0.060" in the hole and the gasket approximately 0.044"
    Did I read this correctly, you are saying the piston is .060" in the hole?
    Last edited by slammedR/T; 04-29-2017 at 12:36 AM.
    This signature has been deleted thanks to photobucket!

  10. #35
    nitroram33's Avatar
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    He was saying they're usually pretty far in the hole stock.

  11. #36

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    Quote Originally Posted by slammedR/T View Post
    Did I read this correctly, you are saying the piston is .060" in the hole?
    Yes, the '01 stock untouched block was 0.060" below deck at TDC.

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  12. #37

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    Quote Originally Posted by wdh681 View Post
    You're using KB pistons, correct? What part #? That should be a good cr for pump gas. Anything milled or decked? Great thread btw. I love the play by play at the machine shop. You rarely get to see that.
    I'm using stock type replacement pistons from SealedPower. Block was bored 0.030" and decked to allow pistons to be at 0.006" above deck for improved quench factor. This also changes the 9.5:1 static compression to slightly over 10:1 which allows it to run on good quality pump gas. I generally run 94 octane as it contains 0% ethanol and stays in the tank better over longer periods of non use, ethanol attracts moisture is is hard on other components over time. I have 91 octane available along with lower grades and they all contain 10% ethanol. I'll run 91 if 94 isn't available as not all stations have it, only Chevron does.

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  13. #38




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    Quote Originally Posted by Wiggsy72 View Post
    I'm using stock type replacement pistons from SealedPower. Block was bored 0.030" and decked to allow pistons to be at 0.006" above deck for improved quench factor. This also changes the 9.5:1 static compression to slightly over 10:1 which allows it to run on good quality pump gas. I generally run 94 octane as it contains 0% ethanol and stays in the tank better over longer periods of non use, ethanol attracts moisture is is hard on other components over time. I have 91 octane available along with lower grades and they all contain 10% ethanol. I'll run 91 if 94 isn't available as not all stations have it, only Chevron does.
    Damn, wish the chevron down here had that 94 fuel, that would be awesomeness!!!
    This signature has been deleted thanks to photobucket!

  14. #39

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    Quote Originally Posted by slammedR/T View Post
    Damn, wish the chevron down here had that 94 fuel, that would be awesomeness!!!
    Back in the 60's you could get Sunoco 260 at the pump. I believe that was 102 octane.

  15. #40

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    Quote Originally Posted by arro222 View Post
    Back in the 60's you could get Sunoco 260 at the pump. I believe that was 102 octane.
    I have a vintage Sunoco 260 decal from Pop's drag racing days.

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  16. #41

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    Good old clearance issues with the Harland Sharps. Problem solved though and the pushrods length has been determined at 6.7" and will use Comp Cams 7771-16. Should have the engine loaded in the back of my truck this Wednesday

    IMG_6930 by Michael Wigg, on Flickr
    IMG_8754 by Michael Wigg, on Flickr
    IMG_8755 by Michael Wigg, on Flickr
    Last edited by Wiggsy72; 08-08-2017 at 02:11 PM. Reason: new photo links

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  17. #42
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    That push rod length seems awful short.
    What cam did you use?
    Edelbrock Magnum heads, Harland-Sharp 1:6 RR, Jomar Performance Ultra-Lite Stud Girdle, SoutheastPerformance Sheet Metal Valve Covers, Custom Hyd Roller from Reed Cams, Mopar M-1 2 Brl Intake, Hughes Stage 1 TB, JBA SS Headers, Jacobs Electronics Pro Street Ignition System and Wires, MBRP 'Cuda Style Exhaust, Western Chassis 2" drop front and rear, Edelbrock IAS Shocks, Terry DeLong Pro-Glass Shaker Hood

  18. #43

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    Quote Originally Posted by kota360 View Post
    That push rod length seems awful short.
    What cam did you use?
    I agree.

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  19. #44

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    It is the correct length for the machine work that has been done. Block is zero decked which accounts for the difference in the lenght along with some other factors. Mine will not be the same as yours.

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  20. #45




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    Quote Originally Posted by Wiggsy72 View Post
    It is the correct length for the machine work that has been done. Block is zero decked which accounts for the difference in the lenght along with some other factors. Mine will not be the same as yours.
    Lol
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  21. #46

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    Setting up the rocker geometry...
    C2EB8895-7A06-4783-859C-6A1C74E42EDC by Michael Wigg, on Flickr
    Working the centre of the valve stem
    51D5D033-A395-45B0-A741-96122EDCAA88 by Michael Wigg, on Flickr
    The rocker to spring retainer clearance
    IMG_8754 by Michael Wigg, on Flickr
    All 16 rockers machined on the Bridgeport pictured with another brand of rocker factory notched as this can be a common issue in some applications
    IMG_8755 by Michael Wigg, on Flickr
    Last edited by Wiggsy72; 08-08-2017 at 02:14 PM.

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  22. #47



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    I ordered SD1002 rockers custom machined for extra valve spring clearance direct from Harland Sharp and they ended up being like 5 bucks cheaper (before shipping) than buying the regular ones through Summit or Jegs. They were awesome to deal with.
    Last edited by chrgr340; 05-02-2017 at 03:41 PM.

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  23. #48



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    Harland Sharp converted my HD rockers to run 7/16" studs for 50 bucks plus shipping. Great guys.
    11.27 @ 118.23
    2017 NM Mopar Challenge Series Champion

  24. #49

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    Quote Originally Posted by Wiggsy72 View Post
    I'm using stock type replacement pistons from SealedPower. Block was bored 0.030" and decked to allow pistons to be at 0.006" above deck for improved quench factor. This also changes the 9.5:1 static compression to slightly over 10:1 which allows it to run on good quality pump gas. I generally run 94 octane as it contains 0% ethanol and stays in the tank better over longer periods of non use, ethanol attracts moisture is is hard on other components over time. I have 91 octane available along with lower grades and they all contain 10% ethanol. I'll run 91 if 94 isn't available as not all stations have it, only Chevron does.
    Have some questions about getting your block decked. Was this your idea or machine shop? What kinda extra time/money was involved in doing this? From reading everything I can, I can only guess you needed to do this because you wanted a bump in compression and it was needed. What type of power gain do you expect by doing this?

  25. #50

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    Quote Originally Posted by redbank View Post
    Have some questions about getting your block decked. Was this your idea or machine shop? What kinda extra time/money was involved in doing this? From reading everything I can, I can only guess you needed to do this because you wanted a bump in compression and it was needed. What type of power gain do you expect by doing this?
    It was my idea. As for the rest I'll let you know when I know.

    Whiplash Engine & Machine, FRP Tuned
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