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Hornhunter
Samba Member
Joined: January 21, 2018
Posts: 6
Location: Tennessee
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 Posted: Sun Jan 21, 2018 7:46 am Post subject: 72 vw jerks/hops in reverse |
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| Hello to everyone 72 super hops and jumps new tranny bushings and new motor mounts and clutch any ideas where to start looking? It only does it in reverse |
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Q-Dog
Samba Member
Joined: April 05, 2010
Posts: 8700
Location: Sunset, Louisiana
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| Posted: Sun Jan 21, 2018 7:54 am Post subject: Re: 72 vw jerks/hops in reverse |
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Did it do this before the new parts?
So, if only in reverse ... Does this happen while turning? On hard surfaces? On soft surfaces(gravel, grass)?
_________________
Brian
'69 Dune Buggy
'69 Beetle Convertible
'70 Beetle |
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Hornhunter
Samba Member
Joined: January 21, 2018
Posts: 6
Location: Tennessee
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| Posted: Mon Jan 22, 2018 4:16 am Post subject: Re: 72 vw jerks/hops in reverse |
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| No it did not do it before the new parts it does it on any type of surface in any direction I did stay underneath it about all day yesterday and found the 2 bolts that the front of transmission mount slides into was not tight but here is the kicker it looks like the bolts are fixed into the tubing and are stripped off so the nuts will not tighten I'm hoping this is the culprit any ideas on rethreading the bolts? Or they gotta be a fix for them? |
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Cusser
Samba Member
Joined: October 02, 2006
Posts: 31379
Location: Hot Arizona
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| Posted: Mon Jan 22, 2018 8:53 am Post subject: Re: 72 vw jerks/hops in reverse |
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| Hornhunter wrote: |
| found the 2 bolts that the front of transmission mount slides into was not tight but here is the kicker it looks like the bolts are fixed into the tubing and are stripped off so the nuts will not tighten I'm hoping this is the culprit any ideas on rethreading the bolts? Or they gotta be a fix for them? |
The front mount on the pan has two welded studs for the front transmission mount, which mount with 2 nuts.
If those studs themselves have the damaged threads, then I'd try rethreading with a die to restore the threads or re-cut them to the next smaller size (even SAE and using appropriate nuts).
Alternative is to repair with welding.
If you're real lucky, then maybe the nuts themselves have the bad threads and you could just use new ones.
_________________
1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
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Hornhunter
Samba Member
Joined: January 21, 2018
Posts: 6
Location: Tennessee
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| Posted: Mon Jan 22, 2018 12:26 pm Post subject: Re: 72 vw jerks/hops in reverse |
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| Hopefully that's my problem going to try to rethreading this evening I will let ya know on progress thanks to all of.you |
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Hornhunter
Samba Member
Joined: January 21, 2018
Posts: 6
Location: Tennessee
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| Posted: Sun Jan 28, 2018 6:46 am Post subject: Re: 72 vw jerks/hops in reverse |
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| Well here is the results. Rethreading both studs ordered a new mount installed everything back guess what? Same friggen jerk yesterday dropped engine again took clutch pressure plate out looked like new unbolted flywheel and some oil dripped out of seal?? And it kinda looks like a slick oil burn on flywheel and some on the edge of clutch disk what now? |
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Max Welton
Samba Member
Joined: May 19, 2003
Posts: 10697
Location: Black Forest, CO
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Vanillagurilla
Samba Member
Joined: November 21, 2017
Posts: 1061
Location: California
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| Posted: Sun Jan 28, 2018 6:08 pm Post subject: Re: 72 vw jerks/hops in reverse |
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| Rear main will leak when you pull the flywheel. Did the flywheel have the oring that seals around the crank? That will keep oil off the clutch surface. |
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Hornhunter
Samba Member
Joined: January 21, 2018
Posts: 6
Location: Tennessee
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| Posted: Sun Jan 28, 2018 6:16 pm Post subject: Re: 72 vw jerks/hops in reverse |
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| It did exactly that when I took flywheel off dribbled about a quarters worth of oil out the oring is in the flywheel the clutch looks like it's just been hitting about half the clutch pad? Maybe flywheel.needs resurfaced? What would be your next step in the trial and error process |
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Hornhunter
Samba Member
Joined: January 21, 2018
Posts: 6
Location: Tennessee
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| Posted: Tue Feb 06, 2018 3:52 pm Post subject: Re: 72 vw jerks/hops in reverse |
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| Good news good news finally got it figured out guys guess what it was??? Yup you guessed it and I never would have thunk it after motor supports tranny nose cone replacement it was all alone the flywheel needed resurfaced thanks to all you guys |
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