Stock Turbo??

[blckgnx]

After only 90k faithful miles, the old turbo is going south. I have scoured all my manuals and books,plus several web sites, and I can't find out what the "stock" turbo is T-3,4? all it says on it, is Garrett. Does anyone know? And who carries a rebuild kit? GM says to go on line. Thanks for any help. Ron OOPS! It is a 87 Grand National, all stock since new.

 

[suicide six]

You might be able to get a good used stocker,something w/low time for cost of rebuild.

 

[83ttypecooled]

Hi,
Well, it's a T3, and was quite the turbo, in it's day. 525 cfm,I believe.

 

[Bat]

Call John

John Craig maight be able to help.

 

[83ttypecooled]

turbo rebuild

Hi,
I rebuilt the stocker in my Regal last year, found the parts online but darned if I can remember who I got them from. Sorry.Google is great, go for it.
As far as the rebuild itself, mine was dumping a goodly amount of oil into the airstream, with a lot of shaft play. No vane damage on either end though... When I got it apart, quite a bit of coking in the oil passages and a LOT(.020) of shaft wear.It was too late to quit,so I proceeded.The results? Well, it doesn't dump oil anymore, shaft slop is nil,but it doesn't spool up like the sloppy unit it used to be. The blades don't spin as freely.My conclusion is that if you have any appreciable shaft wear,buy a reman or go with something like a TA49, be done with it. By the way, I paid $70 for the kit, plus several hours of sweat equity, of course.Good luck!

 

[t3intercooled]

I just rebuilt my turbo the other day, you can do it very easily, they have a link on gnttype.org under the mechanical section. The link is shown below for it, also I got my turbo rebuild kit for the stock GN turbo from john craig for only $75. you can get to his site from the link for limit engineering, let me know if there is anything else i can do to help.

http://gnttype.org/techarea/turbo/turborebuild.html


http://limitengineering.com/

 

[Gary Wells]

ops, my bad, was the stock turbo a Garrett T3 or T03? Don't remember.

 

[83ttypecooled]

Hi,
I don't know the difference, but the car mags of the time always referred to the GNs as having a "Garrett T3" turbo. This was a pretty versatile model, and was used on the SVO Mustangs,Saab 900turbo, etc. I'm sure there were differences in capability with all of these, but same basic model was used.

 

[blckgnx]

stock turbo?

Thanks to all for the info,
That gives me a referance starting point. Am going to have to make the decision as to whether I keep her stock, OR, go have some real fun!! My friend has a new Viper thats suppose to be in the ll's. The ole buick could easily smoke his older Corvette, but Viper? I may have to call for some help, me and this ole car go back a ways. My heart is all patched up and I kinda have a kindship with the buick, so maybe I should breath some more life in her too!! Thanks again, you guys seem to be a hell of a good bunch. Ron

 

[83ttypecooled]

Flames! not life.... If you want, vipers are catchable. In a straight line, of course.... But then, who wants a viper drag car, anyway? These Hennessy things are outragous,but they already get 6 miles to the gallon,so I guess you aren't worried about efficiency if you own one.

 

[microELVIS]

The results? Well, it doesn't dump oil anymore, shaft slop is nil,but it doesn't spool up like the sloppy unit it used to be.

Mine is the exact same way. I got a new stock replacement due to massive squealing, and its a pretty good garret turbo, it spools pretty fast. However it does not spool like the original stocker with the shaft play. With the old one, the rear end would squat alot and nick my new tires in the wheel well. That doesnt happen anymore. Weird....