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16v head swap? lets work it out!
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morghen  



Joined: 21 Jan 2005
Posts: 7902
Location: Romania

PostPosted: Thu Sep 07, 2017 5:37 pm    Post subject: Reply with quote

custom cams can be made, is that head cutting feasible? do the spacing and bores work? how about the stuts?
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Paulyy  



Joined: 05 May 2014
Posts: 87
Location: Melbourne

PostPosted: Mon Sep 11, 2017 7:37 pm    Post subject: Reply with quote

morghen wrote:
custom cams can be made, is that head cutting feasible? do the spacing and bores work? how about the stuts?


Im actually not sure which 20v head we're talking about. The 5 cylinder or the 4 cylinder??

I can't find info in either.

Cutting and welding a 5 cylinder head into 4? i dont think it's really feasible if everything lined it. maybe, depends on head design.
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morghen  



Joined: 21 Jan 2005
Posts: 7902
Location: Romania

PostPosted: Mon Sep 11, 2017 8:47 pm    Post subject: Reply with quote

I was talking about taking a 5cyl audi head and cutting it to fit the 924 if the spacing is ok and the head studs position are an advantage.
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Paulyy  



Joined: 05 May 2014
Posts: 87
Location: Melbourne

PostPosted: Mon Sep 11, 2017 8:54 pm    Post subject: Reply with quote

The 07K head? i dont think so. it'll require to much work to even consider it. Give it a google search to see how it looks.
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morghen  



Joined: 21 Jan 2005
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PostPosted: Mon Sep 11, 2017 9:32 pm    Post subject: Reply with quote

meh, I believe you, I was just talking out of my ass

One could CNC one I guess....or CNC a head and block in one piece and run 10bar of boost making 5000hp
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Paulyy  



Joined: 05 May 2014
Posts: 87
Location: Melbourne

PostPosted: Mon Sep 11, 2017 9:43 pm    Post subject: Reply with quote

hahaha!

Trust me, if i had a 5 axis, i would be drawing up a head by now.

I only have a small 3 axis cnc router.

Im looking at combustion chambers, if its worth cutting into a n/a head. even if it's 5mm deep. i did make a thread about it just before.

I know the 931 head has it, and i did see someone modify it to some extent.
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v2rocket_aka944  



Joined: 05 Jan 2009
Posts: 39
Location: San Diego, CA

PostPosted: Tue Sep 12, 2017 7:50 am    Post subject: Reply with quote

Paulyy wrote:
The 07K head? i dont think so. it'll require to much work to even consider it. Give it a google search to see how it looks.


not the o7K...
i meant the old 20V "AAN" 5 cylinder of the 1980s rally cars...
2.2 or 2.3L usually, found in the audi Quattro coupes, some sedans, etc.

the 924 I-4 shares a bellhousing pattern with that 5 cylinder which is how the 5 cylinder bolts up easily enough.

could the 924 engine be derived/related to the Audi 5?
or just coincidence of bolt pattern?
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Paul  



Joined: 02 Nov 2002
Posts: 9348
Location: Southeast Wisconsin

PostPosted: Wed Sep 13, 2017 2:09 pm    Post subject: Reply with quote

Porsche Audi and VW were the same company in years past, so they were just using what was in their supply chain.
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nickthompson  



Joined: 26 Mar 2013
Posts: 863
Location: Central Georgia

PostPosted: Wed Sep 13, 2017 6:47 pm    Post subject: Reply with quote

v2rocket_aka944 wrote:
Paulyy wrote:
The 07K head? i dont think so. it'll require to much work to even consider it. Give it a google search to see how it looks.


not the o7K...
i meant the old 20V "AAN" 5 cylinder of the 1980s rally cars...
2.2 or 2.3L usually, found in the audi Quattro coupes, some sedans, etc.

the 924 I-4 shares a bellhousing pattern with that 5 cylinder which is how the 5 cylinder bolts up easily enough.

could the 924 engine be derived/related to the Audi 5?
or just coincidence of bolt pattern?


The old Audi i5s have a much smaller bore spacing than the original 2.0
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