Datsun Roadster Forum-311s.org

I can't find this in one place, but if it is, just delete this and point me in the right direction.

Stock is 18mm I believe.

I've heard of 21mm and 23mm replacements. The 21mm one I found on eBay.

1. Are there other choices?
2. Do urethane bushings make a difference over stock rubber bushings?
3. Do NEW bushings make a difference over old worn ones (besides the obvious safety reasons)?
4. Do people add Zerk fittings in this location? I didn't see any on my car.

Looking forward to more information.

21mm sway bar.
eBay Seller info:
mcboulevard ( 10498)
99.2% Positive feedback

$140 with free shipping.

From Deans Web Site:

Partnumber: 1594
Datsun Roadster 7/8 22.2 MM Competition Front Sway Bar W/Bushing Kit

Gold zinc, refers to color, plated competition front sway bar with bushing kit. You won't have to shove and push to get our sway bar onto your car. We won't make any excuses for the fit of the last run of Nissan's aftermarket 22.2 mm bars as we declined and NEVER carried them and have heard complaints from 4 other vendors concerning the poor fit.

Simply put. Our aftermarket bar fits perfectly.1517 pieces sold to date! This is the same bar Mike Young used to sell by the dozens.

NOTE: Price in the box includes the 4 piece urethane bushing set.A savings of $29.00.

SPECIAL NOTE: The change of rate between the 7/8 bar and the original 23mm bar is calculated by the difference of the cross sectional area between the two bars. In the case of the 7/8 and the 23mm bar the difference is 14%. The manufacturer has communicated that, on a street car, most people would not be able tell the difference between the two bars. A sharp driver, or race enthusiast may be able to tell the difference. $195.00



New Products
Suspension
Partnumber: 1672
23 MM Competition Front Sway Bar W/Bushing Kit

For you die hard enthusiasts!

First and foremost. There is absolutely nothing wrong with our 22.2MM / 7/8" sway bar. Is there a difference between this 23MM bar and the 22.2MM / 7/8 we sell? Believe there is a big difference? You decide. Three things happen here. 1) You don't have to be made afraid of having to choose one bar over the other and 2) You can get into a 23mm bar at reasonable pricing! 3) We are the only Vendor offering a, current production, 23MM bar.

Exact to dimension 23 MM Metric material is nearly impossible to find here in the US, but we found it.

.906 INCHES / 23 MM Competition Front Sway Bar. Dimensions as per Nissan original.

For Gold color Order by PART#1672GBU

For Black powder coated finish Order by PART#1672BBU

Both bars come with our 4 piece urethane bushing kit.

$225

Garm wrote:
1. Are there other choices?

Always

Alvin wrote:

Garm wrote:
1. Are there other choices?

Always

I think that is a Speedway Engineering set-up

^ That looks pretty tunable.

Garm wrote:^ That looks pretty tunable.

Yes it does, however you need to cut the original sway bar support brackets off in order to mount it. You will also need to modify the A-arms to mount the end links. I've thought long and hard about running one of these, but I just can't bring myself to cut the original mounts off the car.

I have a stock 19mm, a 12mm with delrin bushings, and the 23mm with poly bushings. I've run all of them. Some cars like the 19, another car with the same suspension setup might want the 21 or 23. Its hard to say. They all like different things. You almost have to try each and see which one the car likes more.

Will

Garm,
New bushings can help, i'm told. Also a good alignment.

Linda

if you decided to go with "mcboulevard" make an offer. He often drops his price if you make an offer he likes.
tim

It appears that nobody has really answered Garm's questions about bushings, so I'll take a stab at it, at least the way I see it.

At one extreme you have a swaybar that pivots in (theoretical) solid steel bushings. At the other end of the spectrum is a bar that has no middle mounts at all. The sooner the play in the pivot bushing is taken up, the sooner the bar can do its job. No mounts would mean that the bar would never get to transfer any energy from one of the bar to the other end, whereas the solid bushings would allow (almost) all rotational energy to go to the other end of the bar. A smaller bar that is properly secured will out-perform a heavier bar that is not.

In sum, the stiffer the bushings, the more fully (and quicker) the bar can do its job. Conversely, the stiffer the bushing, the more vibration that will be transmitted from the bar to the frame. The ideal solution will depend on what the driver wants/needs, and will be somewhere in the middle between the two extremes.

Clear as mud?

Are the bushing sizes that critical for what you are descrbing? Does a 17.5mm bar need a 17.5 bushing or can it use a 17 or 18 or 19? And urethane seems to be preferred to get the most out of the bar

Linda

Bucky that helps. I'm going to start by uprading the bushings on my stock bar. That might be the difference I need without going to a bigger bar.

Especially since every bushing on the car needs replacing.

Linda, the bushings will match the bar; they have cutouts for the size of the bar they are supposed to mount.

if you decided to go with "mcboulevard" make an offer. He often drops his price if you make an offer he likes.
tim

I'll be darned. That worked. THANK YOU