Re: 1983T to 1988 8v n/a: Similar enough for a swap? - Saabnet.com Bulletin Board
The 8vT has a pretty low static compression ratio and no intercooler in US-spec form. I'm sure Saab was playing it on the safe side and to some degree was already pushing the contemporary turbo envelope, so fair enough. the 8vNA motors have a higher static compression ratio - similar in fact to the 16vT - so putting the turbo on that should yield a nice bump in off-idle performance and will help to reduce turbo lag. Adding the intercooler from a 16v engine is trivial - it's all bolt-in - and will help lower intake temps to reduce the chance of detonation and improve performance at the same time. The combination should yield a pretty nice driver - not as good as a 16vT but superior to a stock low-compression, non-intercooled 8vT by a wide margin. You will need the fuel distributor and ignition distributor from the 8vT to ensure proper fuelling and safe ignition advance, but I *believe* both are drop-in - I think the variable would be ignition, but I'm pretty sure the '83 will have standard Hall-Effect and not the earlier magnetic impulse system - I think that cut was in '81 or '82.
Hmmm... that reminds me - you will probably want to install an oil cooler as well. See Charles Wirt's recent thread on that topic.
The only real concern here would be relative fragility of the '88's bottom end, but 8psi through an intercooler just shouldn't be that big of a deal. That's almost no boost. You probably still have several psi of headroom before anything dangerous is in play.
posted by 12.195.130...
Posts in this Thread:
Post a Followup
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no Spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Your address is: 18.104.22.168 - Using CCBot/2.0 (http://commoncrawl.org/faq/) - Logged.
Site Members do not see red text instructions, skyscraper, nor box ads.
Click here to see all
the Site Membership Benefits!