 thump on acceleration |
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| lotus_65 |
 May 14 2009, 06:14 PM
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#1
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Senior Member  Group: Members Posts: 1,608 Joined: 21-March 05 From: minneapolis, mn Member No.: 3,795 Region Association: Northstar Region  |
this farm-field gearbox thumps really badly on accel., especially on left turns (the thump is mainly on the left. it's so bad i feel like the wheel's coming off.
i looked and have found some decent drops from the tranny and the messy buildup is clearly somewhat gear lube on the case. i'm going to get my wrench and some gear oil, but if anyone can think of something else to check, let me know! anecdotally, the carbs cough and spit when this happens. related??? thefleur |
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Replies(1 - 9)
| Elliot Cannon |
May 14 2009, 06:33 PM
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#2
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914 Guru Group: Retired Members Posts: 8,487 Joined: 29-December 06 From: Paso Robles Ca. (Central coast) Member No.: 7,407 Region Association: None 
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CV joints??
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| lotus_65 |
May 14 2009, 07:35 PM
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#3
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Senior Member Group: Members Posts: 1,608 Joined: 21-March 05 From: minneapolis, mn Member No.: 3,795 Region Association: Northstar Region |
oh, i forgot to say, i did check the cv's lugs, etc... they're tight, and prior to this engine change, i had zero issues with these cv's
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| Joe Bob |
May 14 2009, 07:40 PM
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#4
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
Either Jimmy Hoffa is in the trunk or the CV joint BEARINGS are about to take a dump....
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| r_towle |
May 14 2009, 07:47 PM
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#5
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States
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Check CV joints, motor mounts (both front and rear)
Then, jack up the rear and grab the wheel...see if it moves back and forth pivoting on the front trailing arm mount....pull and push it hard. Rich |
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| SLITS |
May 14 2009, 08:13 PM
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#6
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None  |
Motor mounts
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| jt914-6 |
May 14 2009, 08:52 PM
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#7
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Driving & working on teeners 41 years Group: Members Posts: 1,786 Joined: 3-May 08 From: Bryant, Arkansas Member No.: 9,003 Region Association: South East States |
Sounds motor mountish to me too.
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| lotus_65 |
May 14 2009, 09:00 PM
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#8
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Senior Member Group: Members Posts: 1,608 Joined: 21-March 05 From: minneapolis, mn Member No.: 3,795 Region Association: Northstar Region |
ok, right on. i'll check the bearings and mounts. it's a good chance it's the front mounts i think.
Rich, is your test for the wheel bearings? i changed them 1500 clicks ago. thanks thefleur |
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| Wilhelm |
May 15 2009, 12:44 AM
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#9
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Member Group: Members Posts: 408 Joined: 7-September 07 From: Hooterville, OR Member No.: 8,088 Region Association: None |
One of the members on this board had this problem recently and it wasn't the motor mounts or the cv joints. His engine wasn't bolted to the crossbar. Either the bolts fell out or were forgotten.
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| lotus_65 |
May 15 2009, 04:37 AM
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#10
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Senior Member Group: Members Posts: 1,608 Joined: 21-March 05 From: minneapolis, mn Member No.: 3,795 Region Association: Northstar Region |
QUOTE(Wilhelm @ May 15 2009, 01:44 AM)  One of the members on this board had this problem recently and it wasn't the motor mounts or the cv joints. His engine wasn't bolted to the crossbar. Either the bolts fell out or were forgotten. huh, that would stink. but i torqued them down tight myself. i don't know why i didn't replace them before the install. that was stupid of me. i should have checked/topped up the gear lube too. (IMG:style_emoticons/default/WTF.gif) (IMG:style_emoticons/default/051103-stupid4.gif) i heard someone has "machined" hockey pucks to use as motor mounts... since i'm smart like a puck, i think i'll try it. |
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