CQ/7A turbo conversion questions

[Denis]

  Use a 2.3 NA block with your head.
  You ll get 8.1 approx CR.
  Use k24 from S4

  Thre is the best place and cheapest i foung for SS tubes to make
headers.ALLIAGESUNIFIES
  2800 de Miniac St.
  St. Laurent QC Canada H4S 1K9
  t.  514.331.1339
  f.  514.331.1775
  http://www.alliagesunifies.com

  2800 de Miniac St.
  St. Laurent QC Canada H4S 1K9
  t.  514.331.1339
  f.  514.331.1775
  http://www.unifiedalloys.com



  Call intended acceleration for some pics about he did good one, for some
good tricks to make one.

  Ask to Jim here and Javad. One did with a T03 flange and Jim with a
k24,k26 flange.

  You can also get a Autocad draw of the SS flanges. (i heve it but i need
to search, i m in lunch right now ;-)   )

  You can use the new the Megasquirt AVR (VEMS:Versatile Engine Management
Systems) or Megasquirt , the Ultra coming soon   , much cheaper than others
but it need to adjust parameters and it s not a plug and play system, but
very versatil.

  The Javad unit is a very good one, almost plug and play and dictated for 5
cylinders.
  Go see 034 site, Nates and Javad are posting much of time there now..

  Ðenis J


  ----- Original Message ----- 
  From: "Chris Thorp" <thorp at spacia.org>
  To: <quattro at audifans.com>
  Sent: Thursday, April 15, 2004 12:32 PM
  Subject: CQ/7A turbo conversion questions


  > I'm looking to do a turbo conversion on my '90 CQ.  I'm planning on
  > rebuilding a motor and going to an aftermarket EFI system (probably
  > Javad's).
  >
  > What I've currently got:
  > A 1990 CQ with ~130kmi
  > A 5000cstq with ~210kmi
  >
  > I was planning on doing an MC1 swap into the CQ, but the more I looked
  > at it, the better turboing the 7A looked.  I know there has been a fair
  > bit of discussion on this, but I have yet to find solid information on
  > what it would take.  It looks like I could run the 7A's head as-is
  > because it already had sodium filled exhaust valves, reasonable cams,
  > and is a 20v.  I would need to make a header with appropriate flanges,
  > do the intake and IC plumbing, lower the compression, and maybe better
  > crank bearings.
  >
  > To lower the compression, it looks like my options are: more/thicker
  > headgaskets (kludge), or new pistons or connecting rods.  I did some
  > calculations, and to get to 8:1 from 10.3:1 would take a rod that was
  > 3mm shorter.  Is calculation correct and doable?  Or would new pistons
  > be a better/cheaper route?
  >
  > Beyond these changes, what would I need to do?  As this is my first
  > major project, am I missing something really obvious (it seems like this
  > isn't really ever done)?
  >
  > TIA,
  > Chris
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