forester 4130 subframe *updated pics of sti subframe

kmurphy · 07-02-2008, 12:51 AM

thought i'd share the subframe i just did for a friend on mine. i took the things i learned from doing my first subframe and applied them to this one, which im going to scratch mine and redo. i also have a couple things that i didnt do to this one that i will do to my new one. i still need to go to the laser cutter and weld on that tab to incorporate the mount by the a-arm. but the car feels responsive and the steering is very direct. so heres the pics. im also going to scratch that middle section, huge pita that i kinda gave up on getting perfect, but everything mounts up correctly even though 2 of the joints arent perfectly inline.

kmurphy · 07-02-2008, 09:13 PM

i hated doing that middle section it took forever to cut and notch and even longer to weld. but, i think we are just going to do 2 straight bars coming down with gussets at each 90 degree joint, that way you can bolt on the factory jacking point.

Tonight jason came over and we added one more bar and installed the piece on his forester. i think it came out great, if i can get the tabs cut by early next week its going to get powder coated.

heres pics from tonight. one of the pics is the final piece but still missing the bracket at the bottom. Another pic is my lame attempt at paint shop to show what the final one should look like. red being tubing, and the teal color being gussets. and last but not least the piece mounted on jasons car with the factory jacking plate in place.

BM_STi · 07-02-2008, 09:16 PM

wanna make me one for my sti? I'm local too

grambo · 07-03-2008, 01:55 PM

Quote:

Originally Posted by BM_STi

wanna make me one for my sti? I'm local too

No shi*. That is awesome!

kmurphy · 07-03-2008, 03:02 PM

thanks for the comments, will hopefully have a picture of my revamped subframe on my sti next week to show you.

kmurphy · 07-11-2008, 12:03 PM

i think i've figured out how im going to do the center section on my future subframes that will be a mounting point to add rigidity and stiffness and be useful as a jacking plate. basically instead of doing the cross section or 2 straight tube sections in the center. im thinking of using a sheet of 4130 about 6"x12" that has dimple dies. like the picture below to give you an idea of what dimple die sheet looks like. i use to use dimple dies on my jeep/buggy to shave weight and increase the strength on thin sheet. so i thought this would be the perfect application for it. to use as a mounting point and as the jacking plate.

SlowScooby · 07-11-2008, 02:32 PM

Damn I want a subframe.

Nice work.

***wdb*** · 07-12-2008, 04:57 AM

Nice looking piece! You know you could sell a dozen or so of these without even breaking a sweat, don't you?

subi4justin · 07-12-2008, 05:22 AM

i give you props for being able to constuct something like that. I would have no clue where to even start.

kmurphy · 07-12-2008, 09:28 AM

thats eventually my plan. but until i get a vendor account i dont think i can publicly talk about it on here. I'd probably be doing that right now, but its really hard when i dont have much capital to buy all the materials, and pay for the brackets i want made, etc... But I'm about a week away from hopefully having what the final subframe should look like, just waiting on the laser cutter for brackets and UPS to bring me dimple dies. Then I'll work on the aluminum splash/diffuser for the bottom.

thanks for the comments. I've almost given up on this considering all the money i spent so far, and the pennies i have in the bank. but i think i see a light in the end of the tunnel.

karleric · 07-14-2008, 02:45 PM

subscribed!

jermdeez · 07-17-2008, 09:44 PM

I'm local and want one too, you should get some type of paint or coating on that and boom.

1loudsti · 07-17-2008, 10:12 PM

if you do start to sell.....im interested depending on final product and price!

kmurphy · 07-18-2008, 12:09 AM

jermdeez, if your local to sac/roseville your more than welcome to stop by and see one. im finishing up a subframe tomorrow actually if you want to take a look, etc....

i should also have pics of the subframe with the jacking plate attached, i got the plate in and the new dimple die.

kmurphy · 07-18-2008, 01:55 PM

heres what i managed to get done today. thought i was going to finish and be able to get to ups but, between the puppy and eating and hanging out i didnt finish. just need to do the center part. i may ditch the plate with dimpe dies idea, and just do 2 pieces of tube section connecting the 2 with some gussets possibly. i think i may be way overdoing,engineering it. so heres some pics one trying to show the whole subframe and the other to show clearance. the downpipe is still the lowest point. and the piece by the oil pan drops just below it, so it doesnt hang down like i believe the do-luck piece does.

07-02-2008, 12:51 AM	#1
kmurphy Junior STI Driver Car: 2006 obp sti Fav Mod: Coming Soon Location: roseville Posts: 153 Join Date: Oct 2007 Trader Rating: (1)	*forester 4130 subframe updated pics of sti subframe** thought i'd share the subframe i just did for a friend on mine. i took the things i learned from doing my first subframe and applied them to this one, which im going to scratch mine and redo. i also have a couple things that i didnt do to this one that i will do to my new one. i still need to go to the laser cutter and weld on that tab to incorporate the mount by the a-arm. but the car feels responsive and the steering is very direct. so heres the pics. im also going to scratch that middle section, huge pita that i kinda gave up on getting perfect, but everything mounts up correctly even though 2 of the joints arent perfectly inline. This ad is not endorsed by this member. Please register or login to hide this ad. Last edited by kmurphy : 07-18-2008 at 01:56 PM.

07-02-2008, 09:13 PM	#2
kmurphy Junior STI Driver Car: 2006 obp sti Fav Mod: Coming Soon Location: roseville Posts: 153 Join Date: Oct 2007 Trader Rating: (1)	Re: forester 4130 chromoly subframe i hated doing that middle section it took forever to cut and notch and even longer to weld. but, i think we are just going to do 2 straight bars coming down with gussets at each 90 degree joint, that way you can bolt on the factory jacking point. Tonight jason came over and we added one more bar and installed the piece on his forester. i think it came out great, if i can get the tabs cut by early next week its going to get powder coated. heres pics from tonight. one of the pics is the final piece but still missing the bracket at the bottom. Another pic is my lame attempt at paint shop to show what the final one should look like. red being tubing, and the teal color being gussets. and last but not least the piece mounted on jasons car with the factory jacking plate in place.

07-02-2008, 09:16 PM	#3
BM_STi S204 Racer Car: 04.7 AW STi Fav Mod: EQ Tuning Location: NorCal (707) Posts: 2,886 Join Date: Apr 2004 Trader Rating: (6)	Re: forester 4130 chromoly subframe wanna make me one for my sti? I'm local too

07-03-2008, 03:02 PM	#5
kmurphy Junior STI Driver Car: 2006 obp sti Fav Mod: Coming Soon Location: roseville Posts: 153 Join Date: Oct 2007 Trader Rating: (1)	Re: forester 4130 chromoly subframe thanks for the comments, will hopefully have a picture of my revamped subframe on my sti next week to show you.

07-11-2008, 12:03 PM	#6
kmurphy Junior STI Driver Car: 2006 obp sti Fav Mod: Coming Soon Location: roseville Posts: 153 Join Date: Oct 2007 Trader Rating: (1)	Re: forester 4130 chromoly subframe i think i've figured out how im going to do the center section on my future subframes that will be a mounting point to add rigidity and stiffness and be useful as a jacking plate. basically instead of doing the cross section or 2 straight tube sections in the center. im thinking of using a sheet of 4130 about 6"x12" that has dimple dies. like the picture below to give you an idea of what dimple die sheet looks like. i use to use dimple dies on my jeep/buggy to shave weight and increase the strength on thin sheet. so i thought this would be the perfect application for it. to use as a mounting point and as the jacking plate.

07-11-2008, 02:32 PM	#7
SlowScooby STI Driver Car: '05 STi Fav Mod: Exhausssst Location: Orlando, FL Posts: 225 Join Date: Jul 2005 Trader Rating: (1)	Re: forester 4130 chromoly subframe Damn I want a subframe. Nice work.

07-12-2008, 04:57 AM	#8
*wdb* dances with roads Car: 2005 CGM STi Posts: 5,067 Join Date: Apr 2005 Trader Rating: (8)	Re: forester 4130 chromoly subframe Nice looking piece! You know you could sell a dozen or so of these without even breaking a sweat, don't you?

07-12-2008, 05:22 AM	#9
subi4justin Professional STI Driver Car: OBP 05 STI protuned Fav Mod: My sunroof! Location: BAy ARea Posts: 472 Join Date: Apr 2007 Trader Rating: (0)	Re: forester 4130 chromoly subframe i give you props for being able to constuct something like that. I would have no clue where to even start.

07-12-2008, 09:28 AM	#10
kmurphy Junior STI Driver Car: 2006 obp sti Fav Mod: Coming Soon Location: roseville Posts: 153 Join Date: Oct 2007 Trader Rating: (1)	Re: forester 4130 chromoly subframe thats eventually my plan. but until i get a vendor account i dont think i can publicly talk about it on here. I'd probably be doing that right now, but its really hard when i dont have much capital to buy all the materials, and pay for the brackets i want made, etc... But I'm about a week away from hopefully having what the final subframe should look like, just waiting on the laser cutter for brackets and UPS to bring me dimple dies. Then I'll work on the aluminum splash/diffuser for the bottom. thanks for the comments. I've almost given up on this considering all the money i spent so far, and the pennies i have in the bank. but i think i see a light in the end of the tunnel.

07-14-2008, 02:45 PM	#11
karleric Senior STI Driver Car: '07 Obsidian Black Fav Mod: Stage 2 + Protune Location: 4177898 637995 10S Posts: 397 Join Date: Mar 2007 Trader Rating: (0)	Re: forester 4130 chromoly subframe subscribed!

07-17-2008, 09:44 PM	#12
jermdeez Spec C Club Posts: 1,762 Join Date: Feb 2005 Trader Rating: (1)	Re: forester 4130 chromoly subframe I'm local and want one too, you should get some type of paint or coating on that and boom.

07-17-2008, 10:12 PM	#13
1loudsti Silver Member Car: CGM 05 Fav Mod: IAG 38mm EWG Location: racine,wi Posts: 1,155 Join Date: Mar 2008 Trader Rating: (1)	Re: forester 4130 chromoly subframe if you do start to sell.....im interested depending on final product and price!

07-18-2008, 12:09 AM	#14
kmurphy Junior STI Driver Car: 2006 obp sti Fav Mod: Coming Soon Location: roseville Posts: 153 Join Date: Oct 2007 Trader Rating: (1)	Re: forester 4130 chromoly subframe jermdeez, if your local to sac/roseville your more than welcome to stop by and see one. im finishing up a subframe tomorrow actually if you want to take a look, etc.... i should also have pics of the subframe with the jacking plate attached, i got the plate in and the new dimple die.

07-18-2008, 01:55 PM	#15
kmurphy Junior STI Driver Car: 2006 obp sti Fav Mod: Coming Soon Location: roseville Posts: 153 Join Date: Oct 2007 Trader Rating: (1)	Re: forester 4130 chromoly subframe heres what i managed to get done today. thought i was going to finish and be able to get to ups but, between the puppy and eating and hanging out i didnt finish. just need to do the center part. i may ditch the plate with dimpe dies idea, and just do 2 pieces of tube section connecting the 2 with some gussets possibly. i think i may be way overdoing,engineering it. so heres some pics one trying to show the whole subframe and the other to show clearance. the downpipe is still the lowest point. and the piece by the oil pan drops just below it, so it doesnt hang down like i believe the do-luck piece does. This ad is not endorsed by this member. Please register or login to hide this ad.