I got a brand new turbo for free off a Buick Grand National from my brother. I am just curious if you guys think this it too big for my 2200. These are the specs inlet side A/R .60 M10 ". The turbine casting shows " A/R .63 M3 Tell me what you guys think. Ill remind you it is freshly rebuilt, and its free. My brother upgraded to a lager one due to his bigger cam, and huge intercooler.
ahah well funny you ask... My dad owns a 87 GNX (rare grand national) and we original were going to put the stock turbo that came on it, into my sunfire... after taking a look we decided nope.. it would be a very tight fit and i think your turbo lag would be huge.
see i dont want to get into boost until i want it, so i dont mind the lag.
My bro has completely built motor, and trans now. Gnx = Sexy
what i ment is i dont care if it doest spool till like 3k. I am running 7 psi only. I know its big, but some guys are running the T3/04e and thats pretty big.
it's not about the lag, the problem is that exhaust a/r is too large and you may spool it but you won't get much boost out of it by the time you hit redline.
I was a retard, and now I'm permanently banned.
if it's a T3 with a turbine sidde of .63 it's good. if it's a T4 then it's too big.
What's the size of the exhaust exit? where the turbine is.
Gilles
2.3 Ho
Its a T3, I didnt think it was too big my self.
It will work but it is a bit big. Ideal hot side a/r is .48
- 93 mph in the 1/8 mile
Member of J-Body Of Michigan.
yea but its free, and brand new, so i guess i wimm make it work for my first boost setup. Hell I wont be out of CFM
KEN 2.2... i would say just go for it... if it turns out its too big then so be it.. it was free... and just get a smaller one.... i kind of want to know if it would work too as this was the exact idea i had last year.. i ended up going with the GM S/C though
I am going to do it!!! lol.
I have plenty of mods to help support it anyways. The port and polished head, will help keep up the exhuast gas speeds. Who cares if it spools at 3000 - 3500K
Like FreeBs said I can always doen size if i need to.
Well since we are on the topic of useing Grand National turbos.. thought i would post a picture of ours...
All we got is the crapy 85, buick T Type, with everything built.
not to big . i going to use a modified To-4 /To-4. on my 2200
Karo (Car Customs) wrote:Freebs wrote:ahah well funny you ask... My dad owns a 87 GNX (rare grand national) and we original were going to put the stock turbo that came on it, into my sunfire... after taking a look we decided nope.. it would be a very tight fit and i think your turbo lag would be huge.
Your dad is one lucky guy.... he can get SO much money for that sucker its not even funny 
Well its up for sale right now... $60,000 CDN... he bought it for $45,000cdn i think and put $30,000 into it for upgrades and some guy emailed us asking about it then emailed back laughing at us saying "you will never get any thing over $30,000cdn for it" even though another guy here in town just bought a fully stock GNX with some rust on it for $47,000cdn
oh and it only has 25,000kms on it and original paint (looks mint too)
