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A Good Read On Hydroforming Technology...

VMax2007

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svensk Senior Enthusiast

svensk

Posted
Posted
very interesting article, never knew they made them like that before.

GM starting hydroforming parts of the frame in '99.

VMax2007 Senior Enthusiast

VMax2007

Posted
  • Author
Posted
very interesting article, never knew they made them like that before.

GM starting hydroforming parts of the frame in '99.

 

 

 

Correction...1989.... My 1989 GMC Sierra had some hydroformed rails.

svensk Senior Enthusiast

svensk

Posted
Posted
very interesting article, never knew they made them like that before.

GM starting hydroforming parts of the frame in '99.

 

 

 

Correction...1989.... My 1989 GMC Sierra had some hydroformed rails.

 

Must of been the whole cab then in '99? I read an Edmunds review a couple years ago when I was looking for a used truck before I picked this one up.

VMax2007 Senior Enthusiast

VMax2007

Posted
  • Author
Posted
very interesting article, never knew they made them like that before.

GM starting hydroforming parts of the frame in '99.

 

 

 

Correction...1989.... My 1989 GMC Sierra had some hydroformed rails.

 

Must of been the whole cab then in '99? I read an Edmunds review a couple years ago when I was looking for a used truck before I picked this one up.

 

 

Yeah, in the new 99 model, they used it much more extensively. In 89's new model year, it was used in only a few frame parts.

asilverblazer Senior Enthusiast

asilverblazer

Posted
Posted

Any one compare the rear sections of frame on a '99-'06 with an '07? They look identical, except the '07 has more boxed length, all the way to the spare tire cross member, if I remember correctly. So technically it's not FULLY boxed, 90% though. HeHeHeHe.

svensk Senior Enthusiast

svensk

Posted
Posted
Any one compare the rear sections of frame on a '99-'06 with an '07? They look identical, except the '07 has more boxed length, all the way to the spare tire cross member, if I remember correctly. So technically it's not FULLY boxed, 90% though. HeHeHeHe.

It's OK, a fully boxed frame will just add needless weight to an already good truck.

bigj Enthusiast

bigj

Posted
Posted

"At GM it started with instrument panel beams on 1994 regal and cutlass"

Svensk is right 99 for GM trucks. Not your 1989 gmc, you should have read what you posted

2017HD Enthusiast

2017HD

Posted
Posted

Think of it as the difference between a milled part and a stamped part. Hydroforming is simply another way of making a stamped part using water as one part of the dye. Hydroforming can also be used to make much larger pieces that are more dimensionally stable than conventionally formed parts.

VMax2007 Senior Enthusiast

VMax2007

Posted
  • Author
Posted
"At GM it started with instrument panel beams on 1994 regal and cutlass"

Svensk is right 99 for GM trucks. Not your 1989 gmc, you should have read what you posted

 

 

Good catch, and I did read it...completely, twice. I missed that. I could have swore GM used it to some extent starting in the 89 new model years. I remember because Dodge introduced it about 10 years later as "revolutionary" and GM had already had it for 10 years!!! But you're right, according to this that is not correct. Anyone else have any more clarification on this?

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