Rear Coilover Options

[DARIN 510]

has anyone tried the super sonic works (heavyindustrie-s.com) rear coilovers ?

[CorAce]

I picked up a par of new GC's for under 2 bill's on ebay and am very happy with them for my DD. nonadjustable, 250lb spring and a matched set with the fronts. they provide good clearance from my 205/50/15 tires.

[dennis]

If you want to piece together a QA1 kit you will need part number QA1 SS100SD for the shock stud mount. After that all you would need is the part number on the coilover kit that they are using.

[dennis]

After further investigation I would be the kit would be DR-5855P

[dennis]

Dave Patten just sent over this on the BBlist !! Thanks Dave

 

DR7855P $140.00 each

 

(Shock P/N, "P" is for poly bushings not rod ends, shocks are 12 way adjustable w/compression and rebound in one knob so both adjust together, coil over spring mounts are included in the cost)

 

 

 

SS110SDM $25.00 each

 

(This is the conversion kit to change from eye to stud at top.)

 

 

 

14CS200 $45.00

 

(QA1 coil over springs, 14" free height, 200# rate, 2.5" ID)

 

 

[SR20DETdatsun510]

Dave Patten just sent over this on the BBlist !! Thanks Dave

 

DR7855P $140.00 each

 

(Shock P/N, "P" is for poly bushings not rod ends, shocks are 12 way adjustable w/compression and rebound in one knob so both adjust together, coil over spring mounts are included in the cost)

 

 

 

SS110SDM $25.00 each

 

(This is the conversion kit to change from eye to stud at top.)

 

 

 

14CS200 $45.00

 

(QA1 coil over springs, 14" free height, 200# rate, 2.5" ID)

 

 

 

 

Mega Bump!

I have QA1's in the rear of my 510 that need replacing.

How current are these options above?

I want stiff or my tires will rub in the rear. I want adjustable 2 way colis.

Most of these do not look like 2 way height/preload adjustable.

Also, has the quality of these setup been tested since last post?

[Dime Dave]

Why do you need to replace them?

 

If they are damaged then yes, but QA1 shocks can be rebuilt if they are just worn out.

 

The DR7855P shock I specified has a 7" travel with a 12.5" compressed length. The Monroe shock spec for a stock Datsun 510 is 13.4" compressed length. If the QA1 being used was a 9" travel shock (DR9855P) it has a compressed length of 15" which could have bottomed damaging the internal shock valving.

 

Ideally you would want as much travel as possible, but compressed shock lengths should be considered first. Using shocks with longer than stock compressed lengths could bottom the shock damaging it. This is why I choose the short length DR7855P shock, even though it has a shorter overall travel distance.

[SR20DETdatsun510]

Why do you need to replace them?

 

If they are damaged then yes, but QA1 shocks can be rebuilt if they are just worn out.

 

The DR7855P shock I specified has a 7" travel with a 12.5" compressed length. The Monroe shock spec for a stock Datsun 510 is 13.4" compressed length. If the QA1 being used was a 9" travel shock (DR9855P) it has a compressed length of 15" which could have bottomed damaging the internal shock valving.

 

Ideally you would want as much travel as possible, but compressed shock lengths should be considered first. Using shocks with longer than stock compressed lengths could bottom the shock damaging it. This is why I choose the short length DR7855P shock, even though it has a shorter overall travel distance.

 

The housings are damaged. The spring, over time, has rubbed through the housing to the threads where you unscrew the shock to rebuild it.

So I don't need a whole lot of travel. (No tire rubbing) What length would you suggest then? Should I get under the car when the coil is compressed and measure it to get a close idea of what shock length I need?

[72nismo]

I just got me a pair of these that I will be installing in a few months when my dime is back on the road..

 

[SR20DETdatsun510]

I just got me a pair of these that I will be installing in a few months when my dime is back on the road..

 

Are those the QA1?

What is the spring rate? Is the dampening adjustable?

[Rustina 510]

I went with Troy Ermish rear coils and got a nice set of fronts from 510keeper.

 

I havnt driven it yet by the stance is nice

[sergio510]

Are these still available ? Where can I get rear coilovers for around 200 or less ?

[Skib]

you cant buy rears for less than $200.

you cant even buy proper build materials for that much.

 

I tried to make cheaper sets because the cheapest stuff was was T3 at $650

Made em cheaper but there still $400 with the cheapest options.

[datsun 160J SSS]

Good info

[datzenmike]

Since 2010 I've had a 710 and one of the first things I did was lower it. I'm not spending $500 for coilovers, mainly because no one needs to adjust the ride height once you get it where you like it. That's a lot of money getting rusty while driving around doing nothing.  I lowered mine 2-3 inches, they are adjustable though maybe not as easily, but again you aren't adjusting them again once set, they have a 50% stiffer spring rate by careful trimming the stock front coil spring, and because I still had the original oil bath dampers (shocks) inside, I replaced the oil with higher viscosity motorcycle fork oil to firm them up. Everything came to less than $50 and a mornings work. Course it doesn't look like I spent $500, in fact it doesn't look like I did anything.

[Jesse C.]

This thread.....

 

 

I made my own rear coil overs, just bought the parts separately and on sale! 

 

I am about $300 in parts for basically T3 clones. 

 

KYB AGX Shocks

McMaster Carr collars 

Eibach Springs and hats

 

 

[Icehouse]

I'd like to add for autoxing T3 rear coilovers suck.  To much rebound even on the lowest setting.  I changed to different dampers using the T3 parts to make them coilovers.  First dry day I got the fastest lap at the autox.  So if it's just a driver they are fine.  Racing not so much.   I haven't tried the others.  I want to get some custom valved 2 way adjustable Fortune Auto coilovers eventually.  

[datsun 160J SSS]

I ordered the QA1 rear coilovedrs. I hope the 200lb spring will be the right spring rate for the 710 

[datzenmike]

Everyone is different in what they think suits them. Comfort vs. performance is one of them. I think 200 lb/in is about in the middle of the range. There's no other way to find what you want than by trying something. No one can advise you on what you will like.

[datsun 160J SSS]

Thanks Mike .I will have to see .i will update my findings.

[datzenmike]

 The 710 has leaf springs just use lowering blocks and add a leaf to stiffen this is what I did on the rear of my 710.

 

If you mean for a 610 then you have the choice of replacing the rear coil. The Dodge Ram 50 front coils give a 150 lb/in rate and can be trimmed. If lowering, the rear wheels will camber and toe in. The usual cure is to slot the cross member of the rear IRS to 'raise' the rear control arms.   

[datsun 160J SSS]

On 2/25/2020 at 7:46 AM, datzenmike said:

 The 710 has leaf springs just use lowering blocks and add a leaf to stiffen this is what I did on the rear of my 710.

 

If you mean for a 610 then you have the choice of replacing the rear coil. The Dodge Ram 50 front coils give a 150 lb/in rate and can be trimmed. If lowering, the rear wheels will camber and toe in. The usual cure is to slot the cross member of the rear IRS to 'raise' the rear control arms.   

My 710 is IRS . the 200lbs coils are firm but nice . fitment of the spring was close to the shock tower .I may have to bend the lip a bit will keep an eye on it .

[4perrev]

Like the T3 stuff.  Gabriel always treats you right (Which is hard to find in business' these days).  Quality parts.  Troy is expensive, ground control has not been good from people I talked to and I don't know the other company.  insert 2 pennies here!

[datsun 160J SSS]

Ordered the QA1 rear coil overs from summit racing .and built my own kit ,very happy with the quality and price . 530.00 with adjustable shocks .

[slowlearner]

I assume all these shocks are for street/track cars. Trying to imagine how they'd hold up to a rally stage/dirt racing with on a single shear setup on the back. Thoughts?