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Thread: How many shims......?

  1. #1
    Diesel Retard! doughboy18718's Avatar
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    Default How many shims......?

    How many shims, if any, does the starter need to ensure it doesn't grind the teeth of the flywheel?

    I am currrently in the process of replacing the flywheel because of this same issue, and don't want to go through this hellacious ordeal again!

    Thanks guys!

    94 GMC Yukon 6.5TD 2dr.

  2. #2
    I welcome everyone...not just Penguins! DEERE3594's Avatar
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    Depends on the starter.. some need them and some dont. I always go by how it sounds.. Im no help
    -Justin
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    Registered User vail426's Avatar
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    Quote Originally Posted by DEERE3594 View Post
    Depends on the starter.. some need them and some dont. I always go by how it sounds.. Im no help
    Sure you are
    1995 Silverado K2500 / 174k miles / stock / vin F / ext cab / long bed / boost gauge /60G glow plug override mod / Gray Stanadyne PMD on sink in bumper nostril / lift pump relay mod / stainless steel crossover / fuel pressure gauge / early model lift pump / Kennedy 20" fan / Hayden 2839 fan clutch / Opti-Lube XPD at every fill up

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    9 11 Never Forget Brooklyn Tow's Avatar
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    I "thought" general rule was that these starters "did not" need shims?
    Louis

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    Enter Witty Title Here:_____ jamierayo's Avatar
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    I've changed a few 6.2/6.5 starters & every one of them was marked "no shim" on the starter. I too go by how it sounds & I never heard one grind.
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  6. #6
    9 11 Never Forget Brooklyn Tow's Avatar
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    Quote Originally Posted by jamierayo View Post
    I've changed a few 6.2/6.5 starters & every one of them was marked "no shim" on the starter. I too go by how it sounds & I never heard one grind.
    Maybe the "El Cheapo" starters have a problem lining up do to "El Cheapo" product......I would think any quality starter would not need shims. JMO

    Just replaced mine with a Delco and no shims.


    Question...when the starter bolts break/snap due to no front bracket, is it because of the weight of the starter or is it the torque from engagment?
    Louis

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  7. #7
    Diesel nut 94K30's Avatar
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    Quote Originally Posted by Brooklyn Tow View Post
    Maybe the "El Cheapo" starters have a problem lining up do to "El Cheapo" product......I would think any quality starter would not need shims. JMO

    Just replaced mine with a Delco and no shims.


    Question...when the starter bolts break/snap due to no front bracket, is it because of the weight of the starter or is it the torque from engagment?
    the torque of the starter motor,
    I too replaced mine, (Bosch rebuild) and no shims....
    1994 Silverado K3500, "F" code 6.5 TD,American Racing Diamondbacks,265/75/16E General Grabber AT2's, 8'minute mount,Modified SSD Intake with S&B filter, Turbomaster,160 Amp alternator,Bosch injectors, 60G Glow Plugs,Manual Glow Plug Override,Lift pump Relay mod, Delphi '93 lift pump, D-tech FSD mounted in bumper, Stanadyne fuel additive with 2 cycle oil, 174,500 miles so far

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    No shims here. I think I"m on my 4th rebuild.. IIRC the old (looks who's talking) had to be shimmed. Clearances need to be 0.020 +/- 0.005 in. PITA to check. you have to remove to bell housing cover to do it. are the mounting bolts still good? along with the front bracket?

  9. #9
    Registered User racer55's Avatar
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    The way I check for starter engagemant if I think I have a problem is to extend the starter drive to make contact with the ring gear and try to fit the end of a paperclip between the top of the drive gear and the bottom of the ring gear where they mesh- the paperclip diameter is approxamatly the proper clearance.

    Like mentioned it is tough to check .
    2005 Chev K3500 Dually CCLB 6.6L

  10. #10
    Registered User bison's Avatar
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    Are you sure you got the correct flywheel/flexplate??
    Gassers ring gears aparently are a wee bit bigger than the diesels.
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  11. #11
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    no shims here. Replaced last August.
    1995 Suburban 2500, 6.5 TD, 4L80e, 4x4 w/3.73s. 350,000 miles. Mods: PMD relocated in bumper, Burning Oil's FSD harness extension, rebuilt injectors, Bosch Duraterm GPs, 97 air filter, CS-144 alternator, Heath boost controller, OPS bypass relay with on/off switch for LP, Pinnacle exhaust with 2.5" crossover, TransGO HD-2 shift kit, TCC mod, Pyro/boost/trans gauges, homemade 2-0 welders cable (batteries, alt, and starter), KOJO chip, and Feed the Beast fuel line upgrade, DMax fan, new harmonic balancer, vacuum pump delete.

  12. #12
    Well it hits on 7 of 8... WarWagon's Avatar
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    Quote Originally Posted by bison View Post
    Are you sure you got the correct flywheel/flexplate??
    Gassers ring gears aparently are a wee bit bigger than the diesels.
    Gasser flex plates have a different tooth count and will flat break the starter and throw it clean off the engine.
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  13. #13
    Registered User ak diesel driver's Avatar
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    there was a thread awhile back where someone had a gasser flywheel on can't remember what it was doing but it didn't break the starter. seems like it was for a 6.5 gasser the ole 396
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  14. #14
    Rust.....What rust.... DieselSlug's Avatar
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    All the starters ive put on my truck have said "No shim" and trust me, ive been through about 6 starters over the past 5 years.... (No glows for a long time on the ex-powerplant)
    Mike (Yup another one)....
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