Can it be done? 20V head on a 2.3 NG?

[David.Ullrich at ferguson.com]

OK, the NG makes 130 HP/140lb ft of torque stock and has a pretty high CR (10:1). So, if I bolt up this 20V head and it makes only 7:1 CR, what kind of power (hp & torque) will the engine make? Will I be better off or worse?

Dave

1987.5 Audi Coupe GT "Special Build" 2.3 - Anthracite Black
1998 VW Passat GLS 1.8T - For Sale CHEAP


-----Original Message-----
From: ScottyCBoy at aol.com [mailto:ScottyCBoy at aol.com]
Sent: Thursday, May 02, 2002 11:47 AM
To: David Ullrich - 0018 HQ; quattro at audifans.com
Subject: Re: RE: Can it be done? 20V head on a 2.3 NG?


It should fit but would yield a rather low compression ratio (7 to 1 or so). You'd also have to work out the manifolds and there are some head gasket differences but it has been done before.

If the head is fine go for it but if the cams are seized it's scrap metal. I know a guy who spent $1200 having his 20V head journals welded and machined then the head straightened cause the welding warped it after a low oil pressure situation. Then he had to buy a new cam and have one metal sprayed to build up the journals again. I've also seen a 8V VW head out of a cabriolet that snapped the last cam journal after the owner decided that the oil plug didn't need to be tightened to hold in oil.

In a message dated Thu, 2 May 2002 11:23:19 AM Eastern Daylight Time, <David.Ullrich at ferguson.com> writes:

>Yeah, it might be trashed, but rebuilding it won't cost THAT much. Any clue whether it can be successfully grafted onto an NG?
>
>Dave
>
>-----Original Message-----
>From: ScottyCBoy at aol.com [mailto:ScottyCBoy at aol.com]
>Sent: Thursday, May 02, 2002 11:17 AM
>To: David Ullrich - 0018 HQ; Quattro at audifans.com
>Subject: Re: Can it be done? 20V head on a 2.3 NG?
>
>
>More than likely the head is trash. The cam jounrals are the first to go when there is a loss of oil pressure.
>
>Scott
>
>
>PS I might be interested in that car if you aren't..
>
>
>In a message dated Thu, 2 May 2002 11:04:46 AM Eastern Daylight Time, <David.Ullrich at ferguson.com> writes:
>
>>
>>Ok, I've got an idea. I know where there is a 90Q with only 81,000 miles. The owner was driving along and hit something and blew a hole in the oil pan, didn't realize there was any damage and continued to drive with no oil. Locked the engine up. I can get the 20V head REAL cheap. The question is whether it can be installed on my 2.3 NG (10v, 130HP). Anybody know? A real PITA to do right? Impossible? What would the results be?
>>
>>Dave
>>
>>1987.5 Audi Coupe GT "Special Build" 2.3 - Anthracite Black
>>1998 VW Passat GLS 1.8T - For Sale CHEAP
>>
>>
>
>