SOA Springs

[demontweeks]

Hey guys,
I would be starting my build up on my YJ pretty soon. I just scored a pair of Portals from the Volvo C-303. The stock leaf springs of the YJ set up for SUA should be able to clear 35", But i'm planning on running 36". I have a set of RE 2.5" SOA springs that i was planning on using for my D30 and 8.8 setup initially.
As this being Malaysia, there's not many spring shops that i know which could re-pack my current stock YJ springs with a little lift. My question here is, how would the ride be if i use the RE SOA springs for the SUA application? The rig won't be a DD no more as the portals i got have 7:14 ratio. Greatly appreciate your feed back guys.

[Grandman]

Heres a little food for thought . All short springs are going to ride like crap . The longer the spring the better it will ride . I would guess there are junk yards around that part of the world . Find some common ( for the area ) springs that are longer , move the rear shackle to accomodate them . By using springs commonly found there you can ad a leaf or two from another set if needed .

You get a better ride , have parts you can find in that location for future repairs - alterations .

[kickstand]

2" lift plus portals plus 35's equals way to much lift. IMO.

I run about 4" lift total and am on 36's/

[demontweeks]

2" lift plus portals plus 35's equals way to much lift. IMO.

I run about 4" lift total and am on 36's/

It's got to be a SUA setup. Portals alone give bout 5" or more lift. Got a buddy that runs the stock YJ spring SUA on the portals. He clears 35" just nicely.

Grandman, there's alot of chop shops down here, but mostly Japanese machines. I could go by looking for some Land Cruiser rear leaf springs...

SOA springs for SUA setup.....would that work guys?

[kickstand]

ahhh I thought you were going to run portals AND SOA. Yes run the RE 1.5" or BDS 2" springs and SUA and you should be in good shape.

I am hoping to from my current 3.5" springs SUA down to 2.5" springs SUA soon.

[demontweeks]

Rocktoy, I have a set of the RE SOA springs. Would it be ok to run the RE SOA made springs for SUA application? My other options would be to try to score some used 2.5 lift spring. As for BDS, I sold my 3.5 leaf's to a buddy and his the only one in Malaysia with them. Most common lifts for YJ and XJ down here are from OME and Black Diamond which does cost a BOMB.

[kickstand]

Too bad you are across the world, I would gladly trade my 3.5" lift springs to you for those re's

The spring doesnt care what side of the spring theaxle is bolted to, run em spring under and you should be good to go.

[demontweeks]

Too bad you are across the world, I would gladly trade my 3.5" lift springs to you for those re's

The spring doesnt care what side of the spring theaxle is bolted to, run em spring under and you should be good to go.

:dance: Thanks bud.....that just saved me a lot of trouble trying to source for new springs. Won't the springs warp easily under SUA application?

[kickstand]

Usually SOA causes more spring wrap then SUA, I do not know what effect the portals will have on that, but the RE springs are pretty good, you may need some sort of traction device but I dont know.

[sodapop]

I would venture a guess that the RE SOA springs have a stiffer spring rate and will more than likely wrap or warp LESS than stock YJ springs even in an SUA configuration. I say run the RE's and be happy! Nice score on teh Volvo's Do you think you could score me a set and smuggle them back here for me?????

[sglide]

cube had a set of RE springs made for soa
the eyes were rapt bacward to help with axle rap, and it seemed to work well, this was in his cj with a sbc350.
i i was real hard on it a few times with very little rap and the ride was one of the nicest ive seen with leaves.
he was soa, if you run them sua they should work even better (for rap, not flex or ride quality) as the leverage is aplyed to the spring diferantly sua to soa

[Rover]

portals are going to put ALOT of leverage on leaf springs, you should look into a traction bar

[sglide]

portals are going to put ALOT of leverage on leaf springs, you should look into a traction bar
becouse there heavy? or a combo of wieght and gear reduction?

[Rover]

becouse there heavy? or a combo of wieght and gear reduction?

because of the offset of the portal boxes.

[Grandman]

becouse there heavy? or a combo of wieght and gear reduction?


With portals the torque from the tire is below the center line of the axel tube giveing it more leverage to twist the spring .

[sglide]

aaaaaa, becouse of the portal boxes at the ends of the tubes
like a kubota front axle

[Rover]

aaaaaa, becouse of the portal boxes at the ends of the tubes
like a kubota front axle

yup yup

[kickstand]

exactly, when looking at where the spring is you also need to look at the centerline of the torque.

Even with the springs mounted UNDEr the axle tube they are still going to be mounted above the centerline of the wheels/torque with the portal boxes.

If it was SOA it would be even worse, it'd be like the added leverage of lift blocks.

[Haggar]

Yeah, I'd be looking to put traction bars on the front and back. and build them WELL. All too common to see them ripped off the axle, even if it means ripping a chuck from the axle housing itself.

When you set up your shackles, have them pretty upright, not much rake. It'll help, too.

[sglide]

exactly, when looking at where the spring is you also need to look at the centerline of the torque.

Even with the springs mounted UNDEr the axle tube they are still going to be mounted above the centerline of the wheels/torque with the portal boxes.

If it was SOA it would be even worse, it'd be like the added leverage of lift blocks.

Yeah, I'd be looking to put traction bars on the front and back. and build them WELL. All too common to see them ripped off the axle, even if it means ripping a chuck from the axle housing itself.

When you set up your shackles, have them pretty upright, not much rake. It'll help, too.makes complete sence

[demontweeks]

I would venture a guess that the RE SOA springs have a stiffer spring rate and will more than likely wrap or warp LESS than stock YJ springs even in an SUA configuration. I say run the RE's and be happy! Nice score on teh Volvo's Do you think you could score me a set and smuggle them back here for me?????

Hey Matt, these axle's are very rare and hard to come by these days. Most of them were exported to UK, as they demand was very high and they paid in pounds sterling. It's a very common swap for Landie's here in Malaysia and UK. Benn looking for them for almost a year now and i paid close to USD 3000 for a pair.

[demontweeks]

portals are going to put ALOT of leverage on leaf springs, you should look into a traction bar

Noted on the traction bar brent

[demontweeks]

I should be picking them up this weekend hopefully. Need to send it in to some fab shop to get the front axle flipped over as it's on the wrong side drop for the jeep. Once again, thanks for all the help and pointers.

[demontweeks]

Hey guys, just picked the portals up last weekend. Disc brake conversion has already been done on them. Should be having them installed in the next month or so. :flip:

[sodapop]

Hey Matt, these axle's are very rare and hard to come by these days. Most of them were exported to UK, as they demand was very high and they paid in pounds sterling. It's a very common swap for Landie's here in Malaysia and UK. Benn looking for them for almost a year now and i paid close to USD 3000 for a pair.

Okay but I've decided that you can't have those axles.... It's really in your best interest. Mostly because you have a "blow off" valve installed in your Evo II. But seriously besides that, I read somewhere that it was against Malaysian law to use them. See below for the direct citation.


Article 53a of Code 156, Section 2.4 of the Malaysian Motor Vehicle Assemblage Code:
Section 2.4: It is unlawful to reinstall, uninstalled OEM Volvo Portal Box Axle (VPBA's) which have been initially uninstalled for modification, later to be reinstalled. VPBA's must only be used in their current production form as OEM VPBA's. Post modified VPBA's may only be used on pre-modified OEM vehicles which originally contained VPBA's. Any VPBA which has been removed for modification shall not be sold for further modification or continued use on any other non-VPBA equipped vehicle. Doing so shall result in forfeiture of both VPBA's and the non-VPBA OEM equipped vehicle which has been equipped to use VPBA's illegally. To prevent forfeiture of your non-VPBA OEM vehicle, you can turn in your VPBA's, whether modified or not, to the:

Volvo Portal Box Axle Inspection & Maintenance Bureau
5123 Any St.
Somewhere, MI 48917
ATTN: VPBAI&M Direction M. Babcock

Shipping is the responsibility of illegal VPBA user and will not be refunded."

So as you can see you really should just send me yours before you get in trouble....:wave4:

[sglide]

Okay but I've decided that you can't have those axles.... It's really in your best interest. Mostly because you have a "blow off" valve installed in your Evo II. But seriously besides that, I read somewhere that it was against Malaysian law to use them. See below for the direct citation.



So as you can see you really should just send me yours before you get in trouble....:wave4::lol::lol::lol::lol::lol::lol::l ol::lol::lol:

[demontweeks]

Okay but I've decided that you can't have those axles.... It's really in your best interest. Mostly because you have a "blow off" valve installed in your Evo II. But seriously besides that, I read somewhere that it was against Malaysian law to use them. See below for the direct citation.



So as you can see you really should just send me yours before you get in trouble....:wave4:


:fryingpan: Well, even if i decided to send them over to you, shipping alone would be more than the cost of it. I tell you what, the day you decided to come visit me down here, we can talk more bout it than :flip: