Rear Leaf Swap Placement?

YeloSub7 · 03-28-2008, 03:24 PM

I am doing SAS and rear leaf swap on my 90 (2nd gen) 4runner. Marlin/TG have some general directions as to placement of hangers and such, but not for the coil to leaf rear swap, only for trucks and 4runners already with leaf in the rear. And I have searched around and found some good pics of what you guys have done, but wanna be more precise. So I was just wondering if I could get some general measurements from you guys on where to place the rear hangers and shackle hangers. Thanks!

And I am using TG 4" rear kit...

fillsrunner4 · 03-28-2008, 05:13 PM

What size tires are you planning on running? A good way you could mock it up is tack the mounts and put the axle under and compress it to see the fit of the tires in the wells. If you plan on bigger than 37's move the axle a bit farther back. I believe I have pics on my thread that show general areas about were to mount or at least were I mounted mine. I forget the actual measurements at the moment but could get them for you later this weekend if you still need them.

4RunnerKid · 03-28-2008, 05:33 PM

i could get you some measurements in the next couple days, but i moved my axle back almost 3". if anything, you can take my measurements and adjust accordingly...

4Crawler · 03-29-2008, 11:48 AM

Simple way is to measure the length of the front half of the springs (center of front eye to center pin) along the arc of the springs. Then locate the center of the rear wheel well and drop a plumb bob from that point. Now measure forward the length of the springs (as previously measured) and mark where that intersects the frame. That is where you put the center of the hole in the spring hanger. Why do it that way? Usually, you want the tire centered in the wheel well opening under full spring compression (for the best tire clearance) and that will put you in the right spot. I did that on my '85 with longer than stock springs:

YeloSub7 · 03-30-2008, 05:13 PM

ah thanks, ya i know you gotta just play around with this stuff to get it to where you want it. Just was looking for at least somewhere to start. Thanks guys!

Blizzard · 03-31-2008, 07:03 AM

I put mine where seemed to me that would be OK and seems that I was right.

Seeing other build-ups here at YT seems that the usual place is where the frame rails start to kick up:

David

**Elvota** · 03-31-2008, 09:43 AM

With TG 5" springs on a 90 4Runner.

Front hanger:

Rear shackle point:

Shackle angle:

Of course, like everyone else said, checking for wheel placement is the best way to go. And be sure to remember that as the wheel compresses, the axle goes backwards in the wheel well due to shackle movement.

YeloSub7 · 04-04-2008, 11:56 AM

thanks for the pictures guy! Hopefully I can get mine welded up soon. Just need to finish some more grinding/cutting...

another question I had was bumpstops for the rear. I have seen most people use nothing, elvota has some, and ukmyers just left his stock coil spring ones. What do you all recomend. And then I see that many of you have also cut out the stock frame brace back there and replaced it with a custom tube one. Is this necessary?

Blizzard · 04-05-2008, 05:30 AM

I recommend you to use bumpstops. I don't have any because I'm going to add airbags in the rear but I had some bad rubbing with 35's and no bumpstops, I pretty damaged the pinchweld.

Also, you'll worn your leafs sooner if they get negative arch.

As for the crossmember, you don't need to cut entirely, only the coil buckets and the panhard bracket. You can put a bracket to hold the shocks vertically between the two frame braces above the rear axle. This is how I did and I got the shocks completely vertical (More effectiveness).

This is what happens when you don't use bumpstops

David

YeloSub7 · 04-05-2008, 04:03 PM

well I want to use bumpstops, just might as well use the stock coil ones where they are at if they work. I can always cut them off and make different ones if I need too...

03-28-2008, 03:24 PM	#1 (permalink)
YeloSub7 Contributing Member Join Date: Mar 2005 Location: San Jose, CA Posts: 860	Rear Leaf Swap Placement? I am doing SAS and rear leaf swap on my 90 (2nd gen) 4runner. Marlin/TG have some general directions as to placement of hangers and such, but not for the coil to leaf rear swap, only for trucks and 4runners already with leaf in the rear. And I have searched around and found some good pics of what you guys have done, but wanna be more precise. So I was just wondering if I could get some general measurements from you guys on where to place the rear hangers and shackle hangers. Thanks! And I am using TG 4" rear kit... __________________ -Jake 1990 4Runner <> 1990 Toyota 4Runner-22RE-5 speed-TG 3" front/4" rear-33's-4.88's-rear LSD-front TruTrac-MC Rear Bumper-TG DOM Sliders! SAS Build-Up Old Rigs: '85 4Runner (RIP) '95 4Runner (sold) Last edited by YeloSub7 : 03-28-2008 at 03:27 PM.

03-28-2008, 05:13 PM	#2 (permalink)
fillsrunner4 Registered User Join Date: Jun 2004 Location: Sammamish, wa Posts: 2,363	What size tires are you planning on running? A good way you could mock it up is tack the mounts and put the axle under and compress it to see the fit of the tires in the wells. If you plan on bigger than 37's move the axle a bit farther back. I believe I have pics on my thread that show general areas about were to mount or at least were I mounted mine. I forget the actual measurements at the moment but could get them for you later this weekend if you still need them. __________________ 94' toyota 4runner (Many a change!) purchased bone stock, NOW... SAS, 37x14" Iroks, Rear Leafs, 5.29's , Air locked front, Welded rear, 4.3L, Chevy V6 , 5spd swapped, dual T/C's MC10R10, flatbelly with custom skids, sliders, and so much more. Might as well start reading this if ya want know more Fillsrunner4 3.4crawler Build Thread Fillsrunner4.3 crawler (Part Two) build thread

03-28-2008, 05:33 PM	#3 (permalink)
4RunnerKid Registered User Join Date: Aug 2004 Location: Sac + SLO, CA Posts: 1,002	i could get you some measurements in the next couple days, but i moved my axle back almost 3". if anything, you can take my measurements and adjust accordingly... __________________ -Mikey- 1993 4Runner ~ TG 5" HD/RUF front \| All Pro ~4" rear \| 37" Krawlers \| bomb-proof front housing \| Marlin UM06s \| 12" Fox 2.0s \| Aussie front \| Lock-Right rear \| 5-speed swap \| TG 4.7s \| 5.29s \| bumpers \| sliders \| t-case skid \| K&N intake \| Flowmaster 40 \| Optima red top \| clear lenses \| PIAA 1400s \| KCs \| LED rock lights \| Midland CB \| Firestik 4' antenna \| PIAA superwhites \| stereo Polygoats 4-Wheel Drive Club -> check it yo

03-29-2008, 11:48 AM	#4 (permalink)
4Crawler Contributing Member Join Date: Jun 2002 Location: SF Bay Area, CA Posts: 6,208	Simple way is to measure the length of the front half of the springs (center of front eye to center pin) along the arc of the springs. Then locate the center of the rear wheel well and drop a plumb bob from that point. Now measure forward the length of the springs (as previously measured) and mark where that intersects the frame. That is where you put the center of the hole in the spring hanger. Why do it that way? Usually, you want the tire centered in the wheel well opening under full spring compression (for the best tire clearance) and that will put you in the right spot. I did that on my '85 with longer than stock springs: __________________ 1985 Toyota 4Runner SR-5, 22REC engine, dual t-cases, 4.88 gears, dual ARBs, 33x10.50 BFGs. r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad Gettin'Off 4WD Club

03-30-2008, 05:13 PM	#5 (permalink)
YeloSub7 Contributing Member Join Date: Mar 2005 Location: San Jose, CA Posts: 860	ah thanks, ya i know you gotta just play around with this stuff to get it to where you want it. Just was looking for at least somewhere to start. Thanks guys! __________________ -Jake 1990 4Runner <> 1990 Toyota 4Runner-22RE-5 speed-TG 3" front/4" rear-33's-4.88's-rear LSD-front TruTrac-MC Rear Bumper-TG DOM Sliders! SAS Build-Up Old Rigs: '85 4Runner (RIP) '95 4Runner (sold)

03-31-2008, 07:03 AM	#6 (permalink)
Blizzard Registered User Join Date: Jul 2004 Location: Barcelona (Spain) Posts: 871	I put mine where seemed to me that would be OK and seems that I was right. Seeing other build-ups here at YT seems that the usual place is where the frame rails start to kick up: David __________________ '94 Toyota 4Runner 3.0 Turbo Diesel Intercooler – Trail-Gear 4'' SAS front, Trail-Gear 5'' rear leaves swap, 35x12.5x15 M/T's and too many things more to write...

03-31-2008, 09:43 AM	#7 (permalink)
Elvota Super Moderator Staff Join Date: Jun 2005 Location: Phx, AZ Posts: 3,442	With TG 5" springs on a 90 4Runner. Front hanger: Rear shackle point: Shackle angle: Of course, like everyone else said, checking for wheel placement is the best way to go. And be sure to remember that as the wheel compresses, the axle goes backwards in the wheel well due to shackle movement. __________________ ================ 1990 4Runner \| V6 3.4 \| 5spd \| 240 someoddthousand miles \| SR5 \| SAS \| RLS \| 35's \| ARB \| TJM \| 217 to 1 \| W8000 - four wheels \| three sticks \| two hands \| one trail - RIGITY DIGITY

04-04-2008, 11:56 AM	#8 (permalink)
YeloSub7 Contributing Member Join Date: Mar 2005 Location: San Jose, CA Posts: 860	thanks for the pictures guy! Hopefully I can get mine welded up soon. Just need to finish some more grinding/cutting... another question I had was bumpstops for the rear. I have seen most people use nothing, elvota has some, and ukmyers just left his stock coil spring ones. What do you all recomend. And then I see that many of you have also cut out the stock frame brace back there and replaced it with a custom tube one. Is this necessary? __________________ -Jake 1990 4Runner <> 1990 Toyota 4Runner-22RE-5 speed-TG 3" front/4" rear-33's-4.88's-rear LSD-front TruTrac-MC Rear Bumper-TG DOM Sliders! SAS Build-Up Old Rigs: '85 4Runner (RIP) '95 4Runner (sold) Last edited by YeloSub7 : 04-04-2008 at 12:04 PM.

04-05-2008, 05:30 AM	#9 (permalink)
Blizzard Registered User Join Date: Jul 2004 Location: Barcelona (Spain) Posts: 871	I recommend you to use bumpstops. I don't have any because I'm going to add airbags in the rear but I had some bad rubbing with 35's and no bumpstops, I pretty damaged the pinchweld. Also, you'll worn your leafs sooner if they get negative arch. As for the crossmember, you don't need to cut entirely, only the coil buckets and the panhard bracket. You can put a bracket to hold the shocks vertically between the two frame braces above the rear axle. This is how I did and I got the shocks completely vertical (More effectiveness). This is what happens when you don't use bumpstops David __________________ '94 Toyota 4Runner 3.0 Turbo Diesel Intercooler – Trail-Gear 4'' SAS front, Trail-Gear 5'' rear leaves swap, 35x12.5x15 M/T's and too many things more to write...

04-05-2008, 04:03 PM	#10 (permalink)
YeloSub7 Contributing Member Join Date: Mar 2005 Location: San Jose, CA Posts: 860	well I want to use bumpstops, just might as well use the stock coil ones where they are at if they work. I can always cut them off and make different ones if I need too... __________________ -Jake 1990 4Runner <> 1990 Toyota 4Runner-22RE-5 speed-TG 3" front/4" rear-33's-4.88's-rear LSD-front TruTrac-MC Rear Bumper-TG DOM Sliders! SAS Build-Up Old Rigs: '85 4Runner (RIP) '95 4Runner (sold)

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