This block of steel is about to become the first ever CTS-V Billet Diff housing!! - Page 3

Albertan · #31 (**permalink**) 12-14-07, 04:32 PM

Machining chunks of steel that size is common place in the injection molding industry. I have a small molding shop and I have one mold machined from a solid piece that is 20" x 25 x 12 thick. People make molds from everything from aluminum to tool steel. You just have to know what you are doing. These days some mills run 80,000 rpm or higher and take very small cuts so they do not heat the steel. Most molds are far more precise than what would be required for this rear end.
Machining this prototype will be time consuming/expensive. If everything works out, casting the part and machining to specs would be the way to go to keep prices down.

urbanski · #32 (**permalink**) 12-14-07, 05:27 PM

i once molded a beer can into a swan

DILLIGAF · #33 (**permalink**) 12-14-07, 07:36 PM

Quote:

Originally Posted by urbanski

i once molded a beer can into a swan

Orly?

thebigjimsho · #34 (**permalink**) 12-14-07, 07:42 PM

Quote:

Originally Posted by urbanski

i once molded a beer can into a swan

I once molded a steak into a sausage. Well, more than once, actually...

Silver Dollar · #35 (**permalink**) 12-14-07, 08:29 PM

Quote:

Originally Posted by STAGEUP

Quick question, how much that block weigh?

About 3 lbs less than TheBigJimSho's head.

However, they are both almost identical in size and shape.

Silver Dollar · #36 (**permalink**) 12-14-07, 08:38 PM

Quote:

Originally Posted by bjohnso0

Build it, you won't regret it. When I started my twin turbo project, there were a bunch of guys trying to give their "expert opinions" on what I was doing wrong.

You've already screwed up. You should go with 3 turbos.....4 would be better. Made from 4230.

And "nawss". You gotta have "nawss". A 3 stage 400 hp shot.

And for gods sake, run nitrogen in the tires or the whole damn project is a waste.

Oh, one last thing. Get a V1 radar detector. It will add length and girth to your penis.

HiTechRV · #37 (**permalink**) 12-14-07, 08:44 PM

Quote:

Originally Posted by thebigjimsho

I once molded a steak into a sausage. Well, more than once, actually...

Actually that's extruding. LMAO.

Custom Gear · #38 (**permalink**) 12-14-07, 09:15 PM

Gentleman... Gentleman... My goodness!!!

Do I sense a little negativity here??? Albertan seems to be the only one who knows what he’s talking about. This case is nothing compared to the stuff I machine. Of corse the steel is going to move all over when it’s machined!!! I’m going to cut out 300 lbs. Of material on this block, I’ve cut 3000 lbs of material out of blocks of steel and held + or - .002 over 80 inches of 3D form.

It’s all in how you process the job.

OOH Yeah. Hey Dill, were not going to heat treat this material, this block of AISI 4140 is already pre hardened to, 27 RC. That’s the way I bought it. The only property change I’m going to do a stress relieve after ruffing operations are completed. And if it took me 100 Hrs. To machine this thing, I’d fire

myself and get a job at K-mart. "30 Hrs. TOPS!!!" This is what I do for A living.

Hey ozloski, I think you should do some more homework. 4140 has .480% carbon content,4130 has .330%. 4140 has A Tensile Strength (ultimate) of 95,000psi. 4130 has a (ultimate) of 81,200psi. 4140 has 24% Elongation before break. 4130... 21.5% Should I keep going?????

I can’t believe you guys want to do nothing but criticize what I’m trying to do... TO IMPROVE YOUR DIFF’S!!! And I don’t even own a F’n V!!!

Try and have a little FAITH!!!

Nutz · #39 (**permalink**) 12-14-07, 09:22 PM

Quote:

Originally Posted by Custom Gear

Gentleman... Gentleman... My goodness!!!

Do I sense a little negativity here??? Albertan seems to be the only one who knows what he’s talking about. This case is nothing compared to the stuff I machine. Of corse the steel is going to move all over when it’s machined!!! I’m going to cut out 300 lbs. Of material on this block, I’ve cut 3000 lbs of material out of blocks of steel and held + or - .002 over 80 inches of 3D form.

It’s all in how you process the job.

OOH Yeah. Hey Dill, were not going to heat treat this material, this block of AISI 4140 is already pre hardened to, 27 RC. That’s the way I bought it. The only property change I’m going to do a stress relieve after ruffing operations are completed. And if it took me 100 Hrs. To machine this thing, I’d fire

myself and get a job at K-mart. "30 Hrs. TOPS!!!" This is what I do for A living.

Hey ozloski, I think you should do some more homework. 4140 has .480% carbon content,4130 has .330%. 4140 has A Tensile Strength (ultimate) of 95,000psi. 4130 has a (ultimate) of 81,200psi. 4140 has 24% Elongation before break. 4130... 21.5% Should I keep going?????

I can’t believe you guys want to do nothing but criticize what I’m trying to do... TO IMPROVE YOUR DIFF’S!!! And I don’t even own a F’n V!!!

Try and have a little FAITH!!!

**The Tony Show** · #40 (**permalink**) 12-14-07, 09:40 PM

Quote:

Originally Posted by Custom Gear

Gentleman... Gentleman... My goodness!!!

Do I sense a little negativity here??? Albertan seems to be the only one who knows what he’s talking about. This case is nothing compared to the stuff I machine. Of corse the steel is going to move all over when it’s machined!!! I’m going to cut out 300 lbs. Of material on this block, I’ve cut 3000 lbs of material out of blocks of steel and held + or - .002 over 80 inches of 3D form.

It’s all in how you process the job.

OOH Yeah. Hey Dill, were not going to heat treat this material, this block of AISI 4140 is already pre hardened to, 27 RC. That’s the way I bought it. The only property change I’m going to do a stress relieve after ruffing operations are completed. And if it took me 100 Hrs. To machine this thing, I’d fire

myself and get a job at K-mart. "30 Hrs. TOPS!!!" This is what I do for A living.

Hey ozloski, I think you should do some more homework. 4140 has .480% carbon content,4130 has .330%. 4140 has A Tensile Strength (ultimate) of 95,000psi. 4130 has a (ultimate) of 81,200psi. 4140 has 24% Elongation before break. 4130... 21.5% Should I keep going?????

I can’t believe you guys want to do nothing but criticize what I’m trying to do... TO IMPROVE YOUR DIFF’S!!! And I don’t even own a F’n V!!!

Try and have a little FAITH!!!

I have no idea if the science is correct, but that was one hell of a response.

thebigjimsho · #41 (**permalink**) 12-14-07, 09:49 PM

Quote:

Originally Posted by Silver Dollar

About 3 lbs less than TheBigJimSho's head.

However, they are both almost identical in size and shape.

Quote:

Originally Posted by Silver Dollar

You've already screwed up. You should go with 3 turbos.....4 would be better. Made from 4230.

And "nawss". You gotta have "nawss". A 3 stage 400 hp shot.

And for gods sake, run nitrogen in the tires or the whole damn project is a waste.

Oh, one last thing. Get a V1 radar detector. It will add length and girth to your penis.

Quote:

Originally Posted by Custom Gear

Gentleman... Gentleman... My goodness!!!

Do I sense a little negativity here??? Albertan seems to be the only one who knows what he’s talking about. This case is nothing compared to the stuff I machine. Of corse the steel is going to move all over when it’s machined!!! I’m going to cut out 300 lbs. Of material on this block, I’ve cut 3000 lbs of material out of blocks of steel and held + or - .002 over 80 inches of 3D form.

It’s all in how you process the job.

OOH Yeah. Hey Dill, were not going to heat treat this material, this block of AISI 4140 is already pre hardened to, 27 RC. That’s the way I bought it. The only property change I’m going to do a stress relieve after ruffing operations are completed. And if it took me 100 Hrs. To machine this thing, I’d fire

myself and get a job at K-mart. "30 Hrs. TOPS!!!" This is what I do for A living.

Hey ozloski, I think you should do some more homework. 4140 has .480% carbon content,4130 has .330%. 4140 has A Tensile Strength (ultimate) of 95,000psi. 4130 has a (ultimate) of 81,200psi. 4140 has 24% Elongation before break. 4130... 21.5% Should I keep going?????

I can’t believe you guys want to do nothing but criticize what I’m trying to do... TO IMPROVE YOUR DIFF’S!!! And I don’t even own a F’n V!!!

Try and have a little FAITH!!!

Well, I think I've found out why SD is so cranky...

rand49er · #42 (**permalink**) 12-14-07, 09:56 PM

Isn't 27 Rockwell C pretty hard? Is 30 hours enough to complete the whole project?

Quit posting and get machining!

Custom Gear · #43 (**permalink**) 12-14-07, 10:14 PM

yeah, It will take more than 30 hrs. to COMPLETE the project. 30 hrs. is the estimated time I'm going to spend in the machine. I'm hoping to work a sat and sun 12hrs. send the ruff machined part out for stress relieve on mon. or tue. then have another 12 hr. day to finish machine. If all goes well. lol

darkman · #44 (**permalink**) 12-14-07, 10:23 PM

Quote:

Originally Posted by Custom Gear

yeah, It will take more than 30 hrs. to COMPLETE the project. 30 hrs. is the estimated time I'm going to spend in the machine. I'm hoping to work a sat and sun 12hrs. send the ruff machined part out for stress relieve on mon. or tue. then have another 12 hr. day to finish machine. If all goes well. lol

Meanwhile back at the ranch - there is simply no telling how many cynical posts this group will create for you to ignore.

SkullV · #45 (**permalink**) 12-14-07, 10:52 PM

Nutz and Custom you are doing a great job. Keep doing what you are doing because you are pioneers in this field and no matter how your project turns out it is one step closer to a solution. You deserve respect from everyone here and whether or not they are going to admit it they are giving it to you!