1. Join the Community!

    DSMtuners is a massive archive of DSM information - but more importantly, it's a COMMUNITY! Join in and participate with other DSMers, and invite all of your DSM friends to make this place their home. Chat with others, create a build thread, post questions and answers. Get involved! Logging in will also remove many of the advertisements, along with this notice. ;)

Heli-Coil Stripped Cam Caps Question

Posted by iNoise, Jun 16, 2019

Please Support VR Speed Factory
Please Support Morrison Fabrication
  1. iNoise

    iNoise Probationary Member

    26
    1
    Joined Apr 25, 2011
    PSL, Florida
    So im in the process of repairing about 8 cam cap stripped threads in my cylinder head with heli-coils. Not sure how so many got stripped, last time these bolts were touched was 8+ years ago when I installed new cams. Is it possible for the bigger cams to put enough stress on the bolts to cause them to strip?

    I guess my question is, should I just go ahead and heli-coil all the bolt holes to be safe or just repair the stripped ones?

    Any input is much appreciated.

    00100dPORTRAIT_00100_BURST20190616162516604_COVER.jpg 00100dPORTRAIT_00100_BURST20190616163619486_COVER.jpg
     

    Street Build 199  1

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
    Loading...
  2. silvreclips

    silvreclips Proven Member

    901
    78
    Joined Jul 19, 2005
    Greenville, South Carolina
    I would only repair the stripped holes. You must have over torqued them to strip out the threads
     
  3. Boomdeeze

    Boomdeeze Proven Member

    1,597
    238
    Joined Jul 5, 2009
    Independence, Minnesota
    Agreed
     

    Street Build 3K  1

    1997 Mitsubishi Eclipse GSX
    10.793 @ 128.98 · 2G DSM
    Loading...
  4. motomattx

    motomattx Proven Member

    1,565
    419
    Joined Dec 9, 2010
    wampum, Pennsylvania
    They likely pulled the threads out when you removed the bolts.
     

    Drag Race Build 2K  16

    1995 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
    Loading...
  5. Goldenugget

    Goldenugget Probationary Member

    15
    9
    Joined Jan 30, 2019
    Albany, New York
    I would just repair the damaged ones. Look into a machine shop doing the repairs so they can get everything located properly. The last thing you want is one of those holes a little off. It may be cheaper than you think.
     

    Street Build 126  2

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM
    Loading...
    ThunderChild likes this.
  6. iNoise

    iNoise Probationary Member

    26
    1
    Joined Apr 25, 2011
    PSL, Florida
    Thats what im thinking, engine sat for 4 years without starting before I broke it down for rebuild.
     

    Street Build 199  1

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM
    Loading...
  7. tk106

    tk106 Proven Member

    1,090
    186
    Joined Sep 11, 2017
    Cincinnati, Ohio
    +1 just the damaged one. Little oil on the bolts when installing, proper torque spec and torque pattern :thumb:.
     

    50  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    92  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 1K  5

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
  8. Mello

    Mello Proven Member

    832
    180
    Joined Jul 4, 2003
    Albuquerque, New Mexico
    Gee, I would do them all. It's hard to say if all the threads may or may not be compromised.
     
  9. ThunderChild

    ThunderChild Supporting VIP

    2,274
    600
    Joined Jan 5, 2012
    Rathdrum, Idaho
    This. Had a bunch of studs snap off in a set of Ford modular heads and a couple pull the threads, cost about 50 bux to have them all fixed, and they cleaned the heads for us too.
     

    155  8

    1987 Toyota Pickup/Hilux
    awd · manual · Misc Vehicles

    Street Build 664  7

    1997 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM

    Street Build 860  1

    1992 Eagle Talon TSi AWD
    manual · 1G DSM

    Street Build 2K  10

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...

Share This Page

Support Vendors who Support the DSM Community
Archer Fabrication ECM Tuning ExtremePSI Feal Suspension Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications OHM Racing RockAuto SouthBay Fuel Injectors STM Tuned VR Speed Factory WheelWell.com White Shed Speed