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RareAir
Samba Member
Joined: May 11, 2002
Posts: 14577
Location: 18 miles North of the border
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 Posted: Mon Feb 06, 2006 1:03 am Post subject: 043 VW head casting/valve size? |
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| What size valves come standard on the VW 043 head? |
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76939
Location: Sneaking up behind you
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| Posted: Mon Feb 06, 2006 3:54 am Post subject: |
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I think 40x35 is the "standard" valve size for them.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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steel buggin
Samba Member
Joined: March 24, 2003
Posts: 415
Location: Arcadia,Ca
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| Posted: Mon Feb 06, 2006 8:19 am Post subject: |
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The 043 was a F.I head and I think the valve's where 34 x 32 which were even smaler then a carb engine. But now in day you may find 043 casting with all type's of valve size's check these 043 head out.
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Glenn
Mr. 010
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Posts: 76939
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steel buggin
Samba Member
Joined: March 24, 2003
Posts: 415
Location: Arcadia,Ca
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| Posted: Mon Feb 06, 2006 8:23 am Post subject: |
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THANKS  |
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millerje78
Samba Amishman
Joined: October 16, 2005
Posts: 2445
Location: Holmes County, Ohio
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| Posted: Mon Feb 06, 2006 9:53 am Post subject: |
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you could LIVE in those ports, steelbuggin. 
-jesse
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[email protected]
Samba Member
Joined: August 03, 2002
Posts: 12785
Location: Salt Lake City, Utah
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| Posted: Mon Feb 06, 2006 12:43 pm Post subject: Re: 043 VW head casting/valve size? |
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33 X 30, 35 X 32, 40 X 35, and 42 X 37.5 have all been used in that head. There is no "stock" size, you must measure them.
John
Aircooled.Net Inc. |
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Volks Wagen
Samba Member
Joined: February 13, 2013
Posts: 2926
Location: Germany
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| Posted: Mon Aug 18, 2014 4:22 pm Post subject: Re: 043 VW head casting/valve size? |
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| [email protected] wrote: |
33 X 30, 35 X 32, 40 X 35, and 42 X 37.5 have all been used in that head. There is no "stock" size, you must measure them.
John
Aircooled.Net Inc. |
Hi folks, I've bare 043 heads with no seats, just the seat bores, and I'm having a hard time trying to source a 30mm valve seat and a 30mm valve. But it just occurred to me that I've no idea if that's definitely what I need, or maybe it's possible for me to ram a 32mm in there, cos it depends on the OD, ID and the valve seating surface I'd assume. So how the fu*k does one work that out? Like if it was a 30mm exhaust valve, what would the OD, ID of the seat need to be? And what'd the valve sealing surface be? 1mm or wha? And I know everyone will say, send it to a machine shop, and maybe I will, but what magical knowledge do they have to help them choose? Anyone able to guide me?
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modok
Samba Member
Joined: October 30, 2009
Posts: 26789
Location: Colorado Springs
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| Posted: Mon Aug 18, 2014 4:41 pm Post subject: |
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Sure. The seat OD should be about 1mm larger than the valve, there is some wiggle room to go either way.
In a OE VW head the seats are peened over making them appear smaller from the outside.
you can fit the seats to the head, or fit the head to the seats, but of course this requires a VGS machine and a lathe, which I'm guessing you don't have.
Also, most valves can be made smaller. Can't make em bigger tho  |
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Volks Wagen
Samba Member
Joined: February 13, 2013
Posts: 2926
Location: Germany
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| Posted: Wed Aug 20, 2014 2:13 pm Post subject: |
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Thanks Modok. I don't have a lathe or VGS machine. Thanks for the info and tips, they may give me some latitude of approach once I measure up the bores again...
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1973 1303 with AB-motor - sporadic
reconstruction as time permits, 1986 ex-Bundeswehr Doka - on the road again.
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[email protected]
Samba Member
Joined: August 03, 2002
Posts: 12785
Location: Salt Lake City, Utah
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| Posted: Wed Aug 20, 2014 2:17 pm Post subject: Re: 043 VW head casting/valve size? |
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The first thing they do is measure them, which you seem to be averse to.
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Volks Wagen
Samba Member
Joined: February 13, 2013
Posts: 2926
Location: Germany
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| Posted: Wed Aug 20, 2014 3:10 pm Post subject: Re: 043 VW head casting/valve size? |
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| [email protected] wrote: |
| The first thing they do is measure them, which you seem to be averse to. |
A hasty conclusion and a smartass answer, John. I did measure them some time back, that's why I said I was trying to find a 30mm valve. Put some lotion on it.
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1973 1303 with AB-motor - sporadic
reconstruction as time permits, 1986 ex-Bundeswehr Doka - on the road again.
I'm definitely, probably, the worlds greatest lover.
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