subframe changing

TGPTurbo90 · April 09, 2008, 09:55:22 AM

Well i have been changing the subframe these past couple of days and found some things that needs to be changed. The subframe came from a 90's Grand Prix SE with a 3.1 N/A 1) the steering rack cooling lines need to be from a non turbo GP as they are bent different than the turbo lines. 2) the front motor mount cradle needs to be used from the GTP turbo, a 3.1 cradle is bent different when it bolts to the side of the block under the a/c compressor. 3) the heat shield that covers the steering rack needs to be changed or new holes drilled as the turbo GP the mounting point are wider, the N/A are closer together. All i did with mine is made new holes and bolted it up. I will post pics soon, and i will check and make sure this isn't anything i left out.

TGPTurbo90 · April 09, 2008, 09:58:04 AM

And does anyone know what to torque the subframe bolt to, right know i have them torqued to 120 ft lbs on my 93 Grand Prix LE 4 door

GutlessSupreme · April 09, 2008, 10:48:25 AM

108 ft-lbs.

and it's "TGP" not "GTP."

Bullet · April 09, 2008, 07:45:26 PM

or TSTE for us with 2 more doors :thumb:

have any pics of the change out?
I'd like to see if possible.
Thanks!

TGPTurbo90 · April 09, 2008, 08:23:01 PM

sorry about that been looking at so many parts and cars at the j/y. got them mixed up. will have pics soon

TGPTurbo90 · April 11, 2008, 09:57:47 AM

here is the original one

TGP Nick · April 11, 2008, 10:02:12 AM

How do you remove the frame cradle with the engine still in the car? Did you use a hoist?

TGPTurbo90 · April 11, 2008, 10:04:26 AM

steering lines that are needed and original motor cradle needed also

TGPTurbo90 · April 11, 2008, 10:10:18 AM

yes i used a cherry picker to pick the motor as high as it would go, and then i lowered the subframe. another way you can do it is take the harmonic balancer off as it just slides on the snout once you take the bolt out. them unbolt the mount from the from the frame or separate the two unbolt the cradle from the mount. and if you unbolt the cradle from the motor it will move up some, to give you move room.

TGPTurbo90 · April 11, 2008, 10:15:44 AM

pics with the used subframe in place

Bullet · April 11, 2008, 10:17:29 AM

great pics. Thanks!

TGPTurbo90 · April 11, 2008, 10:26:34 AM

i'm going to take more today as i have to finish it today. i am going to be leaving for hamilton oh saturday to go to school for my class A and will be on the road working for MILLIS Transfer.

TGPTurbo90 · April 11, 2008, 10:33:12 AM

some more pics of the tgp

bake82 · April 11, 2008, 11:51:30 AM

Oh the memories from the summer!! It looks like you got everything under control! Looking good thus far!