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What's working for you? Using qa1 coilovers with Beebani brackets


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#1 HOGIE

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Posted 28 February 2017 - 10:06 PM

So it's time to talk coilovers. I've paid Beebani for his UCA and LCA assembly as well as the coilover mounting brackets. I want to go disc brakes and get rid of the kingpins and go ball joint so the torsion bars are gone too. They will ship soon so I need to decide on the coilovers I'm going to run. I've done my research and I've decided QA1 as other have done before.

These are what I'm looking at and will be using the QA1 7HT400 springs


I really couldn't find the specifics of what people used so if you've used these ad had issues or success please let me know.

QA1 Proma Star Double Adjustable Coil-Over Shocks
http://www.qa1.net/s...uble-adjustable
Thinking of using DD301 or DD303. Probably too expensive for me

Ultra Ride Coil-Over Shocks
http://www.qa1.net/s...ultra-ride-7031
Thinking of using US301. Not offered at US303 on there site.

Proma Star Single Adjustable Coil-Over Shocks
http://www.qa1.net/s...ngle-adjustable
Thinking of using DS301 or DS303.

The 301's have a Mounting Recommended Ride Heigh, Spring Length, Compressed Height, Extended Height of 9.5-10", 7 ", 8.75" and 11.125", respectfully.

The 303's have a Mounting Recommended Ride Heigh, Spring Length, Compressed Height, Extended Height of 10.75-11.25", 7/8/9", 9.5", 12.75", respectfully.

#2 KoHeartsGPA

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Posted 28 February 2017 - 10:34 PM

Assuming for the 521, right?

#3 HOGIE

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Posted 01 March 2017 - 06:14 AM

Details, yes for the 521

#4 d.p

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Posted 01 March 2017 - 07:40 AM

Sub'd.

 

One question I have is how are they measuring 'recommend ride height?'    



#5 G-Duax

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Posted 01 March 2017 - 02:06 PM

d.p, eye to eye on the shock. 

 

 

I'm just going to go with the shock he recommends in his adds: 3855 (stock lower arms), but with poly ends (3855P).

You don't want to run the Heim joint ends on the street, they will wear out in a year due to road grit working it's way into the ball section.

 

And I will be running the QA1 US502 on the rear (4-link).



#6 HOGIE

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Posted 01 March 2017 - 04:39 PM

G-Duax.

The DDR3855 is no longer available, from what I've searched.

#7 d.p

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Posted 01 March 2017 - 04:46 PM

d.p, eye to eye on the shock. 

 

 

I'm just going to go with the shock he recommends in his adds: 3855 (stock lower arms), but with poly ends (3855P).

You don't want to run the Heim joint ends on the street, they will wear out in a year due to road grit working it's way into the ball section.

 

And I will be running the QA1 US502 on the rear (4-link).

 

ah ok.. other than being adjustable and losing bump stops/kingpins what else you gain?  In the end is worth it to do all this shit?



#8 bigboy620

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Posted 01 March 2017 - 06:49 PM

I'm in the same spot as you but looking for the best fitment on my 78 620. I was planning to use the qa1 MS302 coilovers shocks but still haven't decided on the springs.

#9 HOGIE

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Posted 01 March 2017 - 10:55 PM

I was instructed by Beebani to use the bearing style, not polly. That's why the parts numbers I'm looking at are 301/303.

The part number DDR3855 is superseded by DD302, which is a polly mount shock. Confusing

I'm concidering using the some variation of the 303 shock, probably 8" spring, and raising the shock tower to gain additional suspension travel. I've read that an issue that can arise is limited travel with the shorter 7" springs and 301/302 shocks.

#10 G-Duax

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Posted 02 March 2017 - 03:52 AM

ah ok.. other than being adjustable and losing bump stops/kingpins what else you gain?  In the end is worth it to do all this shit?

 

I am not losing the king pins, and my Bilsteins dampened the stock spring rate of the torsion bars just fine.

Am ridding myself of the pain in the ass of trying to run a performance exhaust around the torsion bars.

 

Hogie, every single tuner car that I have seen that went to spherical bearings for rod ends on custom suspension arms, and not put Seals-It rod end boots on them, have had the spherical bearings go to shit with in a year.

 

Guess we need Beebani to pop in here and explain the no poly thing.

Guess if there is a reason for not using poly ends, I could always add the boots on them.



#11 HOGIE

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Posted 02 March 2017 - 08:15 AM

Hogie, every single tuner car that I have seen that went to spherical bearings for rod ends on custom suspension arms, and not put Seals-It rod end boots on them, have had the spherical bearings go to shit with in a year.


This is good information to have. Thanks

Im going this route to because I want disc brakes and I thought if I was going through the trouble of swapping everything over to disc I want to get rid of the king pins too. The swap to coilovers came along with all that. Removal of the torsion bars will allow me to run the 240sx long style exhaust manifold off my KA, still to come. Also I'll be stoked to have the additional ease of adjustments with the coilover and ballpoint setup

#12 Farmer

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Posted 09 March 2017 - 11:04 PM

Hogie, this is what I bought for my 620.  First link says it not available anymore but gives substitute.  I went a little longer shock than Beebani

 

https://www.summitra...ts/hal-aln4855b

 

springs

 

https://www.summitra...9-400/overview/



#13 G-Duax

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Posted 10 March 2017 - 03:44 AM

Farmer, do you have a side shot of how your truck sits with the longer shocks?



#14 Draker

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Posted 10 March 2017 - 08:42 AM

The second hand parts business must be going well.


View my 69 510 4dr Sedan - Build Thread
View my 71 510 2dr Sedan - Coming soon.

http://drakers.pl510.info

 

 


#15 Farmer

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Posted 10 March 2017 - 06:56 PM

Farmer, do you have a side shot of how your truck sits with the longer shocks?

Best shot. this is with two inch drop spindles also

 

p_011.jpg



#16 2wheel-lee

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Posted 13 March 2017 - 10:02 AM

I have Beebani's LCAs and UCAs with his coilover shock mount. I raised the upper shock mount about 3/4", if I recall correctly (find my build thread, and it's probably there).

I am also using Hardbody 2" drop spindles. 

 

I am currently using 550# springs, but I'd like to upsize them to 600 or 650. I first tried 400 or 450 pound springs. Under the weight of the truck, they nearly completely compressed within the shock's stroke. Useless. 

 

Your spring choice is based on a number of factors, but one of them often not mentioned is the amount of overall travel you're looking at and how much sag you want. Keep in mind that coil springs are rated in how many pounds required to compress them 1". With the 301s, you only have 2-3/8" of shock travel, so a much stiffer spring is required vs if you're using a 6" stroke shock. See how that works? A 400# spring would require 400 pounds to compress 1" - almost 1/2 the shock travel. But if you were using it on a 6" stroke shock, 400 pounds would cause it to sag 1" - 1/6 of it's travel. 

 

There are a few other things to talk about, depending on what you're trying to do. I don't have mine driving yet, because I've been having to rework the LCAs to have a place for the bump stops to hit as well as to get enough - or any - negative camber. 

 

Are you going to run drop spindles? How low do you want to go? 

 

Here's where I'm at. 

 

20170208_210622_zpsy5jjukjx.jpg



#17 HOGIE

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Posted 13 March 2017 - 07:05 PM

Hogie, this is what I bought for my 620. First link says it not available anymore but gives substitute. I went a little longer shock than Beebani

https://www.summitra...ts/hal-aln4855b

springs

https://www.summitra...9-400/overview/


Thanks for the links Farmer. I didn't see a part number listed for the superseding part.

#18 HOGIE

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Posted 13 March 2017 - 07:39 PM

2wheel-lee thank you for your post. This is what I'm looking for. I don't know if I'm running drop spindles. I haven't sourced them yet would like to.
How low? Probably not as low as yours, but maybe, and definitely lower than farmer sits but it will drop down once the motor is installed.

I like the idea of raising the shock tower and running a longer shock to have more travel rather than a stiffer spring on shorter shocks.

I was hoping to decide on a set up and have everything ready to install all at once but it seems to make sense to install the shock tower and control arms then decide what shocks and springs will work best

#19 Farmer

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Posted 14 March 2017 - 06:17 PM

 

 

QA1 Precision Products ALN4855B - QA1 Aluma Matic Coil-Over Shocks

 



#20 HOGIE

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Posted 06 April 2017 - 08:32 PM

I received my upper and lower control arms and coil over brackets. I was hoping for enough input from others to decide which size coil overs to run and have them ready when I installed the control arms and bracket but it seems the best thing to do is install the control arms and brackets and measure to figure out what shocks and springs best fit my needs.

The new hardware.
image_zpsdfpit1qk.jpg


I'll post pics here when I take the next step