MC vs KH take 2

Jim Dupree jdupree914 at sbcglobal.net
Tue Sep 25 16:38:31 PDT 2007


Has anyone looked into using an NF/NG 2.3L
block/crank/rods? In stock form the compression would
be too high but if pistons are being replaced anyway?

--- Cody Forbes <cody at 5000tq.com> wrote:

> Well thats a bust then. I'm planning on using an NF
> head with the larger
> intake valve. Plus if I've got to bore it I'd rather
> bore one of my MC
> blocks and go to JE pistons since this is for my car
> that was previously
> north of 500hp before the carnage, I'll just have to
> save up and ask Santa
> for pistons, HA!
> 
> -Cody Forbes
> http://www.5000tq.com
> '87 5ktq - Fast.
> '86 5ktqCD
> '86 5k
> '86 5k
> 
> 
> Ameer Antar wrote:
> > Ya, crank and rods are the same dimensions, but
> you'll have to bore
> > out .060 just to get to stock MC bore. You'll have
> to use a KH head
> > as well; the coolant passages are different. I
> know the oil filter
> > housing is different (2 filters instead of one,
> but most likely you
> > can swap in an MC housing). The oil pump's
> slightly different, but
> > other than that not much else. I've run a KH
> pretty hard with forged
> > pistons. Engine can take it, but the fuel system
> is another story.
> > 
> > 
> > On 9/24/07, quattro-request at audifans.com
> > <quattro-request at audifans.com> wrote:
> >> 
> >> Date: Mon, 24 Sep 2007 07:59:09 -0500
> >> From: cody at 5000tq.com
> >> Subject: MC vs KH take 2
> >> To: quattro at audifans.com
> >> Message-ID:
> <20070924075909.q7sz8ctu88og80w4 at www.jcforbes.com>
> >> Content-Type: text/plain;      
> charset=ISO-8859-1;     DelSp="Yes";
> >>         format="flowed"
> >> 
> >> Why didn't I think of this sooner??
> >> 
> >> I'm in need of a block for my "fast" 5ktq after
> melting a chunk of
> >> cylinder wall, but my spare MC blocks are both in
> need of boring (one
> >> is rusted, one is worn out). I've got two KH
> engines sitting arround
> >> collecting dust and rust, but I don't want to use
> the cast pistons.
> >> 
> >> Is there any reason that anybody knows of that I
> couldn't use MC
> >> pistons in a KH block and call it an MC? Crank
> and rods the same?
> >> I've got plenty of spare MC internals to do
> whatever needed.
> >> 
> >> 
> >> -Cody Forbes
> >> http://www5000tq.com
> >> 
> >> 
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