Spring over, shackle rev

Post by **bill** » Mon Aug 11, 2003 11:30 pm

Doing a spoa on my lwb ute cant decide to do a shackle rev or not what are the pros and cons i run rear leafs in the front

Post by **roadrunner** » Tue Aug 12, 2003 2:21 am

I run coils so I'll only stick my 2 cents in to stir the pot

Apart from the slight increase in approach clearance, i reckon that your steering might benefit due to the spring / bush movement being to the rear of the axle thereby causing less wander.

Apart from that, I'd be buggered if I know ! :lol:

Post by **grimbo** » Tue Aug 12, 2003 8:40 am

a shackle reverse is better for high speed driving but you will also find that it causes the wheel to move backwards under compression which could cause the tyre to foul on body work. You also have, I believe, less traction when climbing as the wheel is being forced back whereas with a traditional shackle setup the tyre is being forced down against the surface increasing your traction. Well that's my thoughts anyway

Post by **greg** » Tue Aug 12, 2003 2:14 pm

Hey Bill,

I reckon you should come down to melbourne and check out a few of the LWB's in the zook club mate - once you see them, i suspect you might think about doing a Rear Spring conversion at the front, and running a 3/4 eliptic in the rear - all Spring Under...

Check out Grimbo's car, and also check out the LJ on 36's that appears on this site a few times (and will soon be in 4wd monthly too)... Both these cars are Sierra LWB's (Chassis) with the above mentioned suspension setup.

Cheers mate,
Greg

Post by **bill** » Wed Aug 13, 2003 5:59 pm

thanks , sorry i took so long to get back, my computer got a virus, got any pics of the 3/4 eliptic or any sites thanks. Bill

Post by **greg** » Wed Aug 13, 2003 6:10 pm

bill wrote:thanks , sorry i took so long to get back, my computer got a virus, got any pics of the 3/4 eliptic or any sites thanks. Bill

check out this thread for some of grimbo's car all flexed up (see the one from the reverse angle - you can see the 3/4 working

http://www.outerlimits4x4.com/PHP_Modul ... php?t=5861

i don't have any shots of the LJ though - sorry.

cheers mate.

Post by **bill** » Wed Aug 13, 2003 6:41 pm

Thanks greg,what sort of road manners does this setup have ,can you draw me one of your pics,looks like a buggy leaf to me

Wed Aug 13, 2003 9:11 pm

bill wrote:Thanks greg,what sort of road manners does this setup have ,can you draw me one of your pics,looks like a buggy leaf to me

yeah, its the same thing.

mine is sprung over with shackle reversal in the front. Check out the build up thread and the flex shots thread for some pics of mine.

Post by **grimbo** » Thu Aug 14, 2003 8:43 am

On road handling is great. i don't notice the 3/4 on road and off road it is a very smooth progressive ride. I've had this setup for about 6 years and it has never caused me a problem

The rears up front give heaps of flex and again a nice progressive feel about.

Post by **Gibbon TSAM** » Thu Aug 14, 2003 10:08 am

excuse the ignorance guys but with the rear spring to front conversion, does it give you extra height and do you leave rears in the rear or is there different springs you should put in the rear to keep the car balanced height wise.

thanks
gibbon

Post by **Gibbon TSAM** » Thu Aug 14, 2003 10:12 am

excuse the ignorance guys but with the rear spring to front conversion, does it give you extra height and do you leave rears in the rear or is there different springs you should put in the rear to keep the car balanced height wise.

thanks
gibbon

Post by **grimbo** » Thu Aug 14, 2003 10:23 am

the putting of rears in the front doesn't increase the height but increases the flex. The longer a spring the better in theory it will flex. My self and Greg are running Old Man Emu 2.5" rear springs all round with the overload leaves removed to allow for a nice soft ride with plenty of flex.

It involves extending the chassis at the fron to accomodate the 3" longer rear springs. A simple mod done by a competent welder. It also allows us to run a 34" Swamper with slight rubbing with only a 2.5" spua lift and 2" bodylift

Post by **purefmx** » Thu Aug 14, 2003 10:37 am

I drive an 85 LWB with spoa and shackle reversal, i'd have to say that the reversal is a bonus due to underbody clearance. Its out of the way, less chance of damage, however with the reversal, your shock will sit further compressed at curb weight due to the mount being moved up.

Post by **redzook** » Thu Aug 14, 2003 4:51 pm

Gibbon TSAM wrote:excuse the ignorance guys but with the rear spring to front conversion, does it give you extra height and do you leave rears in the rear or is there different springs you should put in the rear to keep the car balanced height wise.

thanks
gibbon

i belive if you buy a kit that allows you to bolt up the rear springs to the front it gives you bout 1- 1.5" of lift

ussaually a longer shackle in the rear will level it

Post by **grimbo** » Thu Aug 14, 2003 5:15 pm

what kit are you talking about?

Post by **redzook** » Thu Aug 14, 2003 5:31 pm

rocky road outfitters:
Bolton Rear Spring Swap Kit. This kit allows you to move a set of rear Samurai springs up to the front. Rear springs are longer than the fronts which makes this a great mod. Longer springs mean more articulation for your vehicle and also a smoother ride. You'll also typically get about 3/4" more lift by using rear springs up front over front springs. This holds true for not only stock springs but also lifted springs if you want to tweak a bit of extra boost for your front end. The kit comes with a rear mounting assembly that pushes the shackle forward just a little bit which really helps soften up those rear springs for a great smooth ride. The kit makes it so that no cutting or welding is require to get some great extra flex, excellent ride, and a bit more lift ...... $55 full kit

most suzuki vendors have a ruf (rear up front) kit

Post by **greg** » Thu Aug 14, 2003 5:42 pm

as per this one from a few weeks back...

http://www.outerlimits4x4.com/PHP_Modul ... sc&start=0

i'm sure it will be more useful once the pics are back again.

Post by **redzook** » Thu Aug 14, 2003 5:48 pm

yeh similar that is the conversion for the yj (jeep) springs

Post by **greg** » Thu Aug 14, 2003 5:49 pm

Gibbon TSAM wrote:excuse the ignorance guys but with the rear spring to front conversion, does it give you extra height and do you leave rears in the rear or is there different springs you should put in the rear to keep the car balanced height wise.

thanks
gibbon

Don't forget Gibbon that unless you are building a show truck - you'll probably want to car to sit as low as possible on whatever size tyres you are running... This will help out with stability.

My Old Man Emu Rear springs are almost Flat at the front, and i'll soon be removing leaves from the back springs to help them flatten out too (reduced the weight of the vehicle and it now sits high at the back)...

Post by **oozuk** » Thu Aug 14, 2003 6:06 pm

"purefmx"
i'm looking to run 33's with spoa and shackle reversal,
What did you mean by [however with the reversal, your shock will sit further compressed at curb weight due to the mount being moved up.]
:lol:

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Spring over, shackle rev

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