Need advice from the 620 gurus about suspension in this photo!

[Kytoaster]

Ok, I got my 620 and SWORE I would leave it as stock as possible.

Well...I lied to myself. 

All the bouncy bits need to be replaced anyway, so I figured I would lower it a little. Before I got the 620, I daily drove a 2nd gen scion xb that was about an inch off the ground, so lowered vehicles aren't really anything new to me.

That said....lowered TRUCKS are a bit of a different animal. I'm used to adjustable coilovers all around, so I can adjust for that perfect height, but with blocks in the rear, if you get it wrong, you're kind of screwed.



My question is, how much of a drop does it look like this 620 has in the rear? I don't THINK it's anything too dramatic, if it's just the standard drop from blocks, I will be VERY excited, as I will be able to get the height I want easily!

[yello620]

My money would be on a 3" block in the rear, and a torsion bar adjustment in the front.

[finney]

Reset springs in the rear with 3" blocks, depending on reset possibly 2" blocks. Torsions wound down in the front. 

[Elkie]

That's more than 3in, there are tons of threads on lowering 620, and all the related issues with doing so (steering, driveshaft, etc)

[datzenmike]

It will be bouncy because the front end has almost no suspension travel and is likely sitting on the rubber bump stops. Without suspension movement the shock absorbers don't/can't work and it's the air in the tires that you're bouncing on. Like a beach ball. Try running the minimum air pressure in the tires but don't run less that that. Otherwise you're stuck with the ride quality.

[kelowg]

Likely that one has a leaf or two removed from rear spring pak or 720 4*4leafs. But tire size also come into play as well.

[skyshadow]

I just wanted to drop in and say that is a great looking 620... We know who the owner is? 

[datzenmike]

Definitely a good job of  lowering, no doubt. I'll take ride quality above looks any day. Function above form. 

[MantisX620]

I think the wheel/tire setup makes this look lower than it is. Im betting thats a 16" wheel. Looks like a standard 3" drop to me.

[Rjawm]

Not sure if this is where you got the pic in the first place but, I bet if you called the shop they might let you know some of the specs.  It was built by JDM Legends as a shop truck. Second link is the contact info.

 

http://lamleydlm.blogspot.com/2015/09/the-creation-of-shop-truck-work-of-jdm.html

 

http://www.jdmlegends.com/?page_id=7

[flatcat19]

My 521 looks like that and it is uncomfortable. 

[distributorguy]

My avatar photo is a 4" drop in rear and drop spindle sup front, plus reclocked torsion bars.  I'm guessing that truck is a 4" drop in the rear by the location of the leaf springs, almost lower than the rims.  

[datzenmike]

Looks like you can see the lowering block in the picture. Another thing is the axle hitting the frame on severely lowered trucks. This happens when the axle lifts suddenly going over a hump like a speed bump. There are rubber stops but again some are removed or cut for additional clearance and the tire becomes the suspension..

[mhub91]

This isn't low at all.

 

I'd guarantee its only a 3" block. The 15" chevy Rallye wheel and taller tire makes it look low .. But it's not.

 

I run 3" blocks and 720 4x4 leaves. That is 'almost' really low. Looks low with my 14" wheels and 185/60 tires

[mhub91]

Even with my setup, I rarely hit the axle.... If anything the exhaust is more of a problem than the axle.

 

And one thing nobody ever mentions is the torsion bar hangers. Those bend extremely easy when you're lowered and hit speed bumps.

[distributorguy]

Kytoaster, you own a tape measure right?  Why don't you just measure from the rear fender lip on your truck down to the top of the tire?  Then you can replicate what you see in the photo with a matching lowering block.  3" is no big deal.  At 4",  lowering the front to match will run into issues with the tires rubbing the toe boards and inner fenders.  My truck has the toe boards and inner wheel arches severely modified, plus custom front wheels with a different offset to clear the stock fenders (Bonneville/SCTA Production class rules).  I only have 1 1/2" of ground clearance at the front crossmember, with bump stops to prevent it from dropping below ground level in case of a flat tire.  Drop spindles help to reduce the alignment issues inherent to lowering.  Aftermarket adjustable control arms and raising the point where the control arms bolt to the frame also help.  

[banzai510(hainz)]

that truck is more than 3 inch in back to me just looking at the blocks from 15feet away.

 

That's a cool Ratsun!!!!!!!!!!!!!!!

[74datsun620]

I too think it is lower then 3" in the back. A picture of the spring pack would help and a picture that shows the frame to housing gap. Also the exhaust exiting in front of the rear end is a easy way of solving the exhaust clearense problem.

[mhub91]

Zooming in on the spring packs, Id bet money their stock. I know for sure that they are not 720 4x4...

[Kytoaster]

I too think it is lower then 3" in the back. A picture of the spring pack would help and a picture that shows the frame to housing gap. Also the exhaust exiting in front of the rear end is a easy way of solving the exhaust clearense problem.

Good point. I never thought about exhaust clearance issues...

 

Welp, luckily I've got a bunch of spare resonators in the garage to fab something up!!