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Bugnube
Samba Member
Joined: May 08, 2016
Posts: 10
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 Posted: Tue Oct 15, 2019 11:40 pm Post subject: My case will not let go! |
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| Hey yall I just bought a 69 parts bug with a seized engine I am trying to get in unseized but cannot for the life of me get the case apart I was able to get it split but it feels like its catching on something all the case bolts are out the oilpump was removed (obviously) and I took the sump off so there should be nothing holding it together in was able to split it too where there is a 3 inch gap but it just won't release it feels like this engine overheated and welded the crank to the case somehow any ideas on how to get this thing to let go? |
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Westfalia73
Samba Member
Joined: June 07, 2016
Posts: 121
Location: New Zealand
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| Posted: Wed Oct 16, 2019 12:06 am Post subject: Re: My case will not let go! |
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Any pics of the case as you have it right now with the 3 inch gap?
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1973 beetle.
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Tom K.
Samba Member
Joined: March 10, 2005
Posts: 1606
Location: Central Pennsylvania
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TDCTDI
Samba Advocatus Diaboli
Joined: August 31, 2013
Posts: 12861
Location: North Carolina
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| Posted: Wed Oct 16, 2019 1:24 am Post subject: Re: My case will not let go! |
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Hidden 13mm nut under the large case nut near the flywheel?
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slalombuggy
Samba Member
Joined: July 17, 2010
Posts: 9147
Location: Canada
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| Posted: Wed Oct 16, 2019 6:21 am Post subject: Re: My case will not let go! |
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So you can pull the entire case apart 3 inches but it won't go further than that? If everything is off the top end, the crank won't hold the case together.
Pistons are off? 2 hidden nuts by the flywheel on the rear cam journal are off? filter screen is off?
Sounds like it is hanging up on crud on one or more of the studs. Be very careful prying it apart, if you damage the case mating surfaces you will hate yourself later on when your engine constantly leaks.
Use a large rubber mallet or a hammer and a block of wood to try knocking the case apart. DO NOT PRY on the mating surface with prybars, screw drivers, gas pipe.....
brad |
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Bugnube
Samba Member
Joined: May 08, 2016
Posts: 10
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| Posted: Wed Oct 16, 2019 11:38 am Post subject: Re: My case will not let go! |
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| slalombuggy wrote: |
So you can pull the entire case apart 3 inches but it won't go further than that? If everything is off the top end, the crank won't hold the case together.
Pistons are off? 2 hidden nuts by the flywheel on the rear cam journal are off? filter screen is off?
Sounds like it is hanging up on crud on one or more of the studs. Be very careful prying it apart, if you damage the case mating surfaces you will hate yourself later on when your engine constantly leaks.
Use a large rubber mallet or a hammer and a block of wood to try knocking the case apart. DO NOT PRY on the mating surface with prybars, screw drivers, gas pipe.....
brad |
two of the pistons are of the engine won't spin at all even with the jugs off the case is junk anyway all i need from it are the rods and camshaft thank God it had a good set of heads on it
Last edited by Bugnube on Wed Oct 16, 2019 11:41 am; edited 1 time in total |
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Bugnube
Samba Member
Joined: May 08, 2016
Posts: 10
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| Posted: Wed Oct 16, 2019 11:40 am Post subject: Re: My case will not let go! |
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| TDCTDI wrote: |
| Hidden 13mm nut under the large case nut near the flywheel? |
nope the clutch and fly wheel are already off |
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Cusser
Samba Member
Joined: October 02, 2006
Posts: 31380
Location: Hot Arizona
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| Posted: Wed Oct 16, 2019 12:29 pm Post subject: Re: My case will not let go! |
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| TDCTDI wrote: |
| Hidden 13mm nut under the large case nut near the flywheel? |
Wouldn't split 3 inches if that was the reason.
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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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ashman40
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Joined: February 16, 2007
Posts: 15987
Location: North Florida, USA
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| Posted: Wed Oct 16, 2019 1:26 pm Post subject: Re: My case will not let go! |
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| Bugnube wrote: |
| TDCTDI wrote: |
| Hidden 13mm nut under the large case nut near the flywheel? |
nope the clutch and fly wheel are already off |
The 13mm nut TDCTDI was describing has nothing to do w/ the flywheel. See the following two pics. Look specifically at the three case studs below and to the front of cylinder #1 (bottom right of pics). The two small studs bracketing the front end of the camshaft are often overlooked. Especially the lowest one as it is often hidden under years of grease/grime.
You can just barely see the location of the lower cam stud in the second pic. This is why it is often overlooked.
If you actually got 3inches between both cases halves all around the case perimeter then your problem is likely with one of the internal parts. You did remove all four pistons from the conn rods, right?
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'67 Beetle #2 {2019 project car - Wish me luck!} |
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Bugnube
Samba Member
Joined: May 08, 2016
Posts: 10
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| Posted: Wed Oct 16, 2019 1:29 pm Post subject: Re: My case will not let go! |
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| ashman40 wrote: |
| Bugnube wrote: |
| TDCTDI wrote: |
| Hidden 13mm nut under the large case nut near the flywheel? |
nope the clutch and fly wheel are already off |
The 13mm nut TDCTDI was describing has nothing to do w/ the flywheel. See the following two pics. Look specifically at the three case studs below and to the front of cylinder #1 (bottom right of pics). The two small studs bracketing the front end of the camshaft are often overlooked. Especially the lowest one as it is often hidden under years of grease/grime.
You can just barely see the location of the lower cam stud in the second pic. This is why it is often overlooked.
If you actually got 3inches between both cases halves all around the case perimeter then your problem is likely with one of the internal parts. You did remove all four pistons from the conn rods, right? |
as previously stated the engine is seized at the crank so I can't spin it to get all the pistons out they are so low in the stroke that they are down in the case and I can move them back and forth so clearance between the case isn't my problem |
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FreeBug
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Joined: March 12, 2012
Posts: 4278
Location: deepest, darkest Switzerland
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| Posted: Wed Oct 16, 2019 1:50 pm Post subject: Re: My case will not let go! |
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You imply can't remove a case half when there are still pistons on that side. just not possible.
Like Cusser very correctly pointed out, if this were a stud problem, the case would be beyond junked, now that it has been split 3 inches! |
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jb17atita
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Joined: June 06, 2010
Posts: 58
Location: Caracas, Venezuela
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| Posted: Sat Oct 19, 2019 8:42 am Post subject: Re: My case will not let go! |
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Gotta find the way to remove all the pistons. The case will NEVER break free with them on, as the guys have pointed out here.
The piston might be in the hole, but what you need is to get the wrist pin out. |
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calvinater
Samba Member
Joined: September 06, 2014
Posts: 3333
Location: 802 The Pointless Forrest
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| Posted: Sat Oct 19, 2019 12:21 pm Post subject: Re: My case will not let go! |
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If your cylinders are off you should be able to split the case. The pistons have to fit through the case bores.
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calvinater
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Location: 802 The Pointless Forrest
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| Posted: Sat Oct 19, 2019 2:06 pm Post subject: Re: My case will not let go! |
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Maybe one or more of your case studs are bent? Got any pictures?
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Pruneman99
Samba Member
Joined: February 22, 2012
Posts: 5013
Location: Oceanside
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| Posted: Sat Oct 19, 2019 3:11 pm Post subject: Re: My case will not let go! |
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| The pistons won't fit through the case. They will hit the webbing. |
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calvinater
Samba Member
Joined: September 06, 2014
Posts: 3333
Location: 802 The Pointless Forrest
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| Posted: Sun Oct 20, 2019 3:21 am Post subject: Re: My case will not let go! |
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| Pruneman99 wrote: |
| The pistons won't fit through the case. They will hit the webbing. |
Good point spaced out on that one.
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scrivyscriv
Samba Electrician
Joined: October 04, 2011
Posts: 2922
Location: Memphis
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| Posted: Sun Oct 20, 2019 4:36 am Post subject: Re: My case will not let go! |
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| Bugnube wrote: |
| ...the engine won't spin at all even with the jugs off ... all i need from it are the rods and camshaft...had a good set of heads on it |
Rods are one of the weakest points in the engine design IMO - one of the most common engine failures is a rod bearing letting go (cause or effect, doesn't matter). I'm assuming a few things here but if you're planning on just re-using the rods and cam.. I caution you to do a little more research, and if at all possible find a set of new rods or a fully rebuilt set. The cam has its own issues and you might be okay to re-use it, but again I would caution you to make sure the lifters are matched up to their same cam lobes as removed - you will very likely see rapid lifter or cam wear otherwise. The better option would be to buy a new cam. There are plenty of choices but ultimately only a small handful are applicable to one engine build.
If you do decide to reuse the parts as is, my only advice then would be to plastigauge the rod big end bearing clearances so you at least know how much slop you have.
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