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greggholmes
Samba Member
Joined: December 10, 2003
Posts: 265
Location: Camano Island, Wa.
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 Posted: Mon Dec 29, 2003 2:57 pm Post subject: type 4 info. |
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Specs.
76 2000 stock with weber 2 barrel
got it running after PO let sit for 4 years.
sounds like massive exaust leak but seems to me like its leaking from the head on number 2. is this common? did the 76 have a head gasket and do they leak?
Also, anyone have a sit on setting up a weber 2bbl. |
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keifernet
Samba Search & Rescue
Joined: May 11, 2002
Posts: 19395
Location: Samba Center for Behavioral Science
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ratwell
Samba Member
Joined: April 26, 2003
Posts: 8717
Location: Victoria, BC
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| Posted: Mon Dec 29, 2003 4:03 pm Post subject: |
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All Type IV bus motors (maybe all Type IVs) had metal head gaskets between the cylinders and the head. The problem with it is that it created two sealing surfaces which was harder to seal. The second problem is that they can break and then you have a head leak (the head/cylinders are less likely to break).
VW's rebuild facility in Canada issued a technical bulletin in 1990 wrt rebuilding. In amounted to eliminating the head gasket (comes in a new gasket set) and instead you shim the base of the cylinder with a appropriately sized spacer.
The spacer increases deck height but does not change the overall valve geometry or CR because you're effectively stacking at the base what you removed from the top. You should still take into account the deck heights, CR, etc into your rebuild of course because shims can vary in their stated thickness.
_________________
'78 Westfalia CDN
'76 Doublecab
Read the Baywindow FAQ |
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greggholmes
Samba Member
Joined: December 10, 2003
Posts: 265
Location: Camano Island, Wa.
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| Posted: Tue Dec 30, 2003 11:00 am Post subject: |
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| What are the chances of damage to the head? do you think I can do a simple repair and be on the road? |
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ratwell
Samba Member
Joined: April 26, 2003
Posts: 8717
Location: Victoria, BC
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| Posted: Tue Dec 30, 2003 11:12 am Post subject: |
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| greggholmes wrote: |
| What are the chances of damage to the head? |
That part of the head is not designed to dissipate the heat from escaping gasses. More of the gasket could break off and end up bouncing around inside.
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| do you think I can do a simple repair and be on the road? |
I really don't know without looking. If you damage is severe enough then you may have trouble getting the head and cylinders to mate. Certainly removing the gaskets and shimming the base is not an involved process.
_________________
'78 Westfalia CDN
'76 Doublecab
Read the Baywindow FAQ |
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NeverHadaBeetle
Samba Member
Joined: October 08, 2002
Posts: 442
Location: Missouri
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| Posted: Tue Dec 30, 2003 11:16 am Post subject: |
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| A simple compression test will tell you if you have a head leaking. Although the head gaskets caused a lot of problems the copper exhaust rings caused many times more. If you think have a large exhaust leak then you should be able to see carbon or soot blackening the area around the exhaust port. This is most likely your problem and easy to fix. Remove the heat exchanger and replace the copper ring. Use a sticky sealant like silicone to keep the ring in place (it will be installed pointing down to the ground) while you reinstall the heat exchanger. Very common problem on type IV engines. Good luck. |
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greggholmes
Samba Member
Joined: December 10, 2003
Posts: 265
Location: Camano Island, Wa.
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| Posted: Tue Dec 30, 2003 11:30 am Post subject: |
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| As soon as I can get the bus home on the cheap I will be able to do some more diognostics. I have a bug motor I can swap in but I'm not sure if everything will work right for the short trip home. other then the tin i'm not sure about the throw out bearing, its out of a 73 beetle.. into a 76 bus |
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keifernet
Samba Search & Rescue
Joined: May 11, 2002
Posts: 19395
Location: Samba Center for Behavioral Science
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| Posted: Tue Dec 30, 2003 11:45 am Post subject: |
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| greggholmes wrote: |
| As soon as I can get the bus home on the cheap I will be able to do some more diognostics. I have a bug motor I can swap in but I'm not sure if everything will work right for the short trip home. other then the tin i'm not sure about the throw out bearing, its out of a 73 beetle.. into a 76 bus |
save yourself the greif on that ( IMO) rent a Uhaul tow dolly.... |
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ratwell
Samba Member
Joined: April 26, 2003
Posts: 8717
Location: Victoria, BC
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| Posted: Tue Dec 30, 2003 12:59 pm Post subject: |
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| greggholmes wrote: |
| I have a bug motor I can swap in but I'm not sure if everything will work right for the short trip home. other then the tin i'm not sure about the throw out bearing, its out of a 73 beetle.. into a 76 bus |
The engine mounts are totally different.
_________________
'78 Westfalia CDN
'76 Doublecab
Read the Baywindow FAQ |
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greggholmes
Samba Member
Joined: December 10, 2003
Posts: 265
Location: Camano Island, Wa.
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| Posted: Wed Dec 31, 2003 6:34 pm Post subject: |
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| Do you mean the rear support? |
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Rich
Samba Member
Joined: August 07, 2003
Posts: 158
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| Posted: Wed Dec 31, 2003 8:28 pm Post subject: |
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Here's a thread re: Weber set up.
http://www.thesamba.com/vw/forum/viewtopic.php?t=55834&highlight=
I think I might have a couple more posts on this site about the Weber, search by author "Rich"
I have a theory about buses that sit for a long time. My theory is that they are too screwed up to drive.
Towing to a place you can work on the bus could be a great idea. Get a good deal on the bus, tow it to someplace you can work on it and have about $500.00 to spend (lose  ) Remember, your bus will never be worth more that 2K.
Rich
'72 Westy |
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greggholmes
Samba Member
Joined: December 10, 2003
Posts: 265
Location: Camano Island, Wa.
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greggholmes
Samba Member
Joined: December 10, 2003
Posts: 265
Location: Camano Island, Wa.
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| Posted: Wed Dec 31, 2003 10:36 pm Post subject: |
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| Rich wrote: |
Remember, your bus will never be worth more that 2K.
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<My bus is worth more then all the money in the world because my wife gave me the bus. I just need to get it home to work on it.
I was working on an upright conversinon for my bug but got the bus. |
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Rich
Samba Member
Joined: August 07, 2003
Posts: 158
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| Posted: Wed Dec 31, 2003 11:54 pm Post subject: |
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No offense Gregg, I hadn't read your story. Good luck.
Rich
'72 Westy |
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greggholmes
Samba Member
Joined: December 10, 2003
Posts: 265
Location: Camano Island, Wa.
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| Posted: Sat Jan 03, 2004 10:53 am Post subject: |
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| thanks |
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