Outer Limits 4x4 Board

Hay every one, im new to 4wds and want to know a few thing like what is an SAS and a u bolt flip,drop hanger and other stuff like that and what do they do thanks.

welcome to the site mate, its full of tech soo learn to use the search function or risk getting flamed by the search nazis

im fairly amaturish but have learnt heaps from here soo this is my understanding of the terms

SAS = solid axle swap, involves cutting all the front suspension out of an independent front suspension (IFS) vehicle and transplanting in a solid axle. commonly done to newer hiluxes (late 97 on) and newer 4runners as well as others. gives much better articulation and more options for customising, ie suspension setup and lift, lockers, tyres, is stronger than many IFS setups, etc.if you search for bitsamissin in the mitsubishi or amybe the mambers forum he has a pretty detailed write up about the sas he did to his pajero

U bolt flip = relocating the u bolt plate from under the axle to above the springs in a SPOA (see below) type setup. if u look under the rear of your hilux ( assuming ffrom your name u have one) you'll see that the u bolts go over the spring pack and are bolted through a plate under the axle housing. flipping them, ie moving them to above the spring pack eliminates the chances of catching them on rocks etc and getting hung up or damaging them. in a hilus this will involve making new shock mounts as they are part of the u bolt plate

SPOA = spring positioned (?) over axle. this setup refers to leaf sprung vehicles with the spring pack above the axle housing. this is standard in hiluxes. doing a SPOA conversion, most commonly done to 40series landcruisers, involves moving the spring pack from below axle to above axle. this gives a fair ammount of lift (over 4in i think) opening up new tyre and spring options. also gets the springs out of the way of rocks and other obstacles that they like to get caught on

SPUA = spring positioned under axle. leaf packs below axle housing. this is standard in all landcruisers and patrols (i tihnk) that come with leaf springs. also standard in many new light commercial utes

i dont know much bout dropped hangers soo i'll leave that to somebody else to explain.

i have probably made several mistakes and others will correct me im sure, but thats my understanding of things

enjoy and search!

dave

Dropped hangers refers to the mounting point for leaf springs at the opposite end to the shackle. When you put extended shackles on your rig and dont modify the other mounting end of the spring it alters the pinion angle of the diff centre. ie rotates it fwd or back depending on vehicle and set up. to eliminate this you cut off the original spring hangers and replace them with dropped hangers which are exactly the same except longer (usually 2") this corrects the pinion angle and eliminates any extra strain than usuall or standard on the driveline when flexing. You can gain greater spring droop by using extended shackles and when paired with dropped hangers it will provide lift, better droop and no extra strain on the driveline.

Hope that helps - also NB use search or the nazi will get you

SPOA = spring positioned (?) over axle. this setup refers to leaf sprung vehicles with the spring pack above the axle housing. this is standard in hiluxes. doing a SPOA conversion, most commonly done to 40series landcruisers, involves moving the spring pack from below axle to above axle. this gives a fair ammount of lift (over 4in i think) opening up new tyre and spring options. also gets the springs out of the way of rocks and other obstacles that they like to get caught on

is this common on hylux's? any dissadvantages to doing so? is it street legal??

cheers

NISMOgemini wrote:

SPOA = spring positioned (?) over axle. this setup refers to leaf sprung vehicles with the spring pack above the axle housing. this is standard in hiluxes. doing a SPOA conversion, most commonly done to 40series landcruisers, involves moving the spring pack from below axle to above axle. this gives a fair ammount of lift (over 4in i think) opening up new tyre and spring options. also gets the springs out of the way of rocks and other obstacles that they like to get caught on

is this common on hylux's? any dissadvantages to doing so? is it street legal??

cheers

mate hiluxes come SPOA standard from the factory

All leaf sprung cruisers and patrols are spring under axle. There's a lot of people who have done SOA conversions, giving usually around 5-6 inches extra lift, but this usually comes at a cost. Workshops charge megabucks to do them, and everything has to be engineered etc. etc. There's quite a few people who have tackled it (backyard mechanics) and have had great success too though.

Coxy

ZOOK60 wrote:

NISMOgemini wrote:

SPOA = spring positioned (?) over axle. this setup refers to leaf sprung vehicles with the spring pack above the axle housing. this is standard in hiluxes. doing a SPOA conversion, most commonly done to 40series landcruisers, involves moving the spring pack from below axle to above axle. this gives a fair ammount of lift (over 4in i think) opening up new tyre and spring options. also gets the springs out of the way of rocks and other obstacles that they like to get caught on

is this common on hylux's? any dissadvantages to doing so? is it street legal??

cheers

mate hiluxes come SPOA standard from the factory

haha maybe i should have gone out side and had a look b4 asking
my bad (only had it for a week so iv not realy looked into anythign yet)

& before every one gets confused.......

SOA = Spring Over Axle
(its the same thing as a SPOA )

SUA = Spring Under Axle
( its the same thing as a SPUA )

Some board members call it one thing while others call it the other




Dont ask me why thats just the way it is


Kingy

V8Patrol wrote:& before every one gets confused.......

SOA = Spring Over Axle
(its the same thing as a SPOA )

SUA = Spring Under Axle
( its the same thing as a SPUA )

Some board members call it one thing while others call it the other




Dont ask me why thats just the way it is


Kingy

Spring Perch under axel (spua) (landcruiser)
spring perch over axela (spoa) (HiLux)

Both the same as kingy's, he just missed the perch bit

Nah ... I didnt miss the "pearch" bit...... or is it "positioned"....

See what I mean as to confusion .....


This is why I call it either a SOA or a SUA

cant see the sence in putting a "P" in there

He he. Sounds a bit like an old guy that i work with. You know ASAP (as soon as possible)??

He says: "Mate, we've got to get that job done ASP!". Which leads me to think, "Why not just say SP?"

Each to their own....

Coxy

Spring Pack Over Axle

YMMV

Spring Placement - Over Axle

mayve be shoul just cut the s and p bits out as the OA and UA bits are the important bits