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Author Topic: Chopped single port head  (Read 11698 times)

Offline Flyguyeddy

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Chopped single port head
« on: December 17, 2019, 01:12:01 PM »
Chopped single port head the other day.   
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Offline Dan_

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Re: Chopped single port head
« Reply #1 on: December 18, 2019, 03:39:18 AM »
Doesn't look like it's going to work very well...    :emoji_u1f62f:
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Offline Flyguyeddy

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Re: Chopped single port head
« Reply #2 on: December 18, 2019, 03:41:51 AM »
Ive seen a photo of a converted single port head somewhere but i cannot find it now.   Probably on yahoo which means it is long gone
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Offline Dan_

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Re: Chopped single port head
« Reply #3 on: December 18, 2019, 10:26:22 AM »
Perhaps moved the cut over, requiring two full heads to make 2 halves...  Not that the spark hole and valve seat could not be welded up and re-machined.
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Offline Flyguyeddy

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Re: Chopped single port head
« Reply #4 on: December 18, 2019, 10:36:28 AM »
There is no reason the single port heads couldnt be made to work with pretty much the same anount of welding needed for a dual port.
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Offline Dan_

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Re: Chopped single port head
« Reply #5 on: December 18, 2019, 03:33:49 PM »
Attached is a 1/2 vw conversion manual that mentions converting single port heads...  The zip file is pics.  The WFM file types will open in "paint".  The manual also discusses the advanced balancing method.
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Offline Flyguyeddy

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Re: Chopped single port head
« Reply #6 on: December 18, 2019, 05:11:16 PM »
got any better copies of the wfm files?  cant read the text and when you zoom in its just blocky pixels
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Offline Dan_

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Re: Chopped single port head
« Reply #7 on: December 18, 2019, 07:09:11 PM »
Unfortunately no...  I ran across them here: http://www.ultraligero.net/  You could inquire there I suppose.
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Offline Theodore

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Re: Chopped single port head
« Reply #8 on: February 11, 2020, 07:36:10 AM »
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Offline Kamcoman77

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Re: Chopped single port head
« Reply #9 on: February 11, 2020, 08:46:20 AM »
Cost
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Offline Flyguyeddy

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Re: Chopped single port head
« Reply #10 on: February 12, 2020, 04:42:18 AM »
No thanks
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Offline Theodore

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Re: Chopped single port head
« Reply #11 on: September 16, 2020, 06:42:51 AM »
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Offline GTS225

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Re: Chopped single port head
« Reply #12 on: September 16, 2020, 07:15:20 AM »
Looks great, Theodore, but where to get valve covers?
I didn't read anything about them, so don't know if they utilize stock VW internals.

Roger
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Offline Theodore

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Re: Chopped single port head
« Reply #13 on: September 16, 2020, 07:31:40 AM »
idk either, i have call in to Summit racing in Utah, no return call yet. i wont buy unless garrentee that i can return.
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Offline Dan_

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Re: Chopped single port head
« Reply #14 on: September 17, 2020, 01:55:51 PM »
People have used the Scat heads.  I don't know how successfully however.  Global engines came with them.  I once saw a turbo charged 1/2 VW fly at Oskosh with them.

I don't like that they don't have cooling fins.  The exhaust valve is the weak link.

I don't remember from where, but I have gotten it into my head that these were designed for drag racing.  Do one pass, let cool.  ETC.

If I used them I would definitely want a CHT gauge.
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