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2.87s to 3.15s, need help, with set up? |
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amc401t10
AMC Addicted Joined: Mar/09/2009 Location: east tn Status: Offline Points: 903 |
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ok benn busy with family. back to car, after trying everything from .040 to .180 shims behind the pinion race I have determined I must have a bad gear? the reading on the drive side of the ring was to the outside of ring , but get this the reading on the coast side was toward the center. ive ordered a 3.54 from summit
. ive pulled the rear and have it on jack stands cleaning it and getting it ready for new gear and bearings. should have pulled it out to begin with but sometines I think I'm 20 isstead of 59.
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1-owner 74 gremlin x 401, t10,3.73 12 bolt,750carb,reed 250@50 cam, roller rockers,msd,offy int.
72 amc matador 401 727 84 j10 ,360, 727 1970 4-door rebel sleeper(455 pontiac,turbo 400) 79 spirit,4.2 |
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tufcj
Supporter of TheAMCForum Supporter of TheAMCForum Joined: Jul/10/2007 Location: Watkins, CO Status: Offline Points: 4085 |
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Are you sure the old gear ratio is 2.87 and not 2.73? The 2.73 used a unique carrier that is different from the 2.87-up. Since the 2.73 pinion gear is larger, the ring gear is further from center, which would explain why you're having to shim it so thick to get a pattern.
Bob tufcj |
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69 AMX
74 Javelin AMX 67 Rogue If you need a tool and don't buy it... you'll eventually pay for it... and not have it. Henry Ford |
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amc401t10
AMC Addicted Joined: Mar/09/2009 Location: east tn Status: Offline Points: 903 |
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43 and 15 tooth count? 2.866666
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1-owner 74 gremlin x 401, t10,3.73 12 bolt,750carb,reed 250@50 cam, roller rockers,msd,offy int.
72 amc matador 401 727 84 j10 ,360, 727 1970 4-door rebel sleeper(455 pontiac,turbo 400) 79 spirit,4.2 |
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amc401t10
AMC Addicted Joined: Mar/09/2009 Location: east tn Status: Offline Points: 903 |
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gear came in today. still cleaning and painting the housing.
hope to install by weekend.
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1-owner 74 gremlin x 401, t10,3.73 12 bolt,750carb,reed 250@50 cam, roller rockers,msd,offy int.
72 amc matador 401 727 84 j10 ,360, 727 1970 4-door rebel sleeper(455 pontiac,turbo 400) 79 spirit,4.2 |
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amc401t10
AMC Addicted Joined: Mar/09/2009 Location: east tn Status: Offline Points: 903 |
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got the rear end out of car , new pinion race in , bearings pressed on pinion and carrier , putting the shim pack behind the pinion race at stock .095 . might get a reading later tonight. damn life keeps u busy sometines with 2 kids at home and a small business to run. benn at this a month now . |
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1-owner 74 gremlin x 401, t10,3.73 12 bolt,750carb,reed 250@50 cam, roller rockers,msd,offy int.
72 amc matador 401 727 84 j10 ,360, 727 1970 4-door rebel sleeper(455 pontiac,turbo 400) 79 spirit,4.2 |
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amc401t10
AMC Addicted Joined: Mar/09/2009 Location: east tn Status: Offline Points: 903 |
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got the shim right, nice pattern, .065 behind pinin race, stock carier shims worked , got .008 backlash. no in lbs torque wrench, got the pinion bearing set to just a little drag when I turn it. test drive car. I like it! drive bout 50-60 miles now and a noise (bearing noise) happens under down hill coast when slowing down. completely stops bout 20 mph or slower. I'm pretty sure that when the carrier is driving the pinion the pinion bearings are whats under load. so questions, pinion bearing too tight , or loose,
? if u touch the gas when noise happens , it stops. the longer u drive and thin the oil , the louder the noise gets
HELP |
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1-owner 74 gremlin x 401, t10,3.73 12 bolt,750carb,reed 250@50 cam, roller rockers,msd,offy int.
72 amc matador 401 727 84 j10 ,360, 727 1970 4-door rebel sleeper(455 pontiac,turbo 400) 79 spirit,4.2 |
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990V8
AMC Addicted Joined: Oct/07/2016 Location: Gloucestershire Status: Offline Points: 788 |
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So was that a new pinion bearing or the old one?
Ivor |
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63 Canadian Ambo 990 V8 327
74 LandRover Lightweight V8 SIII Shopping Trolley |
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Red20
AMC Addicted Joined: Jan/29/2013 Location: Oceanside CA Status: Offline Points: 1556 |
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New crush sleeve?
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1969 Javelin SST "Screamin' Banana" - Totaled Feb 2018
1973 Hornet Sportabout X "yellajack" - 360/727/TracLoc DAILY DRIVER |
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amc401t10
AMC Addicted Joined: Mar/09/2009 Location: east tn Status: Offline Points: 903 |
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loose pinion yoke nut. got it back and drove 60-70 miles now. seems fine.
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1-owner 74 gremlin x 401, t10,3.73 12 bolt,750carb,reed 250@50 cam, roller rockers,msd,offy int.
72 amc matador 401 727 84 j10 ,360, 727 1970 4-door rebel sleeper(455 pontiac,turbo 400) 79 spirit,4.2 |
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Red20
AMC Addicted Joined: Jan/29/2013 Location: Oceanside CA Status: Offline Points: 1556 |
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Did you use a new crush sleeve or are you using a solid spacer and shims for preload? I recall you said you didn't have an in/lb torque wrench so you got it to what felt like appropriate preload by hand.
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1969 Javelin SST "Screamin' Banana" - Totaled Feb 2018
1973 Hornet Sportabout X "yellajack" - 360/727/TracLoc DAILY DRIVER |
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