1990 gs turbo conversion?

[kmuck1349]

sorry if this is in the faq already, i found similar threads but only for the 2g or the sohc 4g37. anyway my cousin had a 1990 gs and its been sitting in a building for some years now and i was considering buying it if it has any performance potential (i know its a 4g63 so i assume yes) but i was wondering if turbo-ing a gs is something feasible? (i have decent experience working on cars and plenty of time/room/tools/etc) im dying for a dsm but cant find a decent 1g gst or gsx in my area and within my current price range

 

[e85_4g63]

I've swapped more non turbo 4g63's to turbo and most people (unless someone has done more then 13). PM me with questions.

 

[9!'clipseDOHC]

I've done the swap myself, check out my blog for more info: DSM Forums - 1g Non-turbo -> Turbo swap

Check out this thread for a recent discussion on this issue: http://www.dsmtuners.com/forums/1g-n-t-tech/393153-turbo.html

It's not as easy as just slapping on a turbo if you want it to last. The biggest concern is the n/a 4G63 9.0:1 cast pistons as they don't handle boost very well. The turbo 4G63's came with 7.8:1 cast pistons to compensate for the boost. If you want to do a successful swap the most important thing is to research, plan, and acquire the needed parts before beginning. Here is a good tech article on the subject: http://www.dsmtuners.com/forums/articles-engine-fuel/37019-installing-turbo-4g63-into-nt-4g63.html.

Hope this helps!

 

[kmuck1349]

Thanks guys, im definitely gonna keep looking into it, im in no rush to get it on the road and i wanna do it right if i do. Thanks for the links, those should be a big help, looks like i have some dsm homework to do. haha

 

[bastarddsm]

yep just do it. The pistons aren't that big of a deal. Untill your maxing out a 14b, or well into a 16g you'll never have problems. I ran LOTS of boost on a 16g with E85, and never had problems until I started to not care and get abusive with the tune.