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Thread: Did the 71 240 have rear sway bar?

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    Registered User Walter Moore's Avatar
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    Default Did the 71 240 have rear sway bar?

    I have a couple of questions. I am afraid that I already know the answers, but here we go.

    First, Did the 71 240Z have a rear sway bar? The reason that I ask (obviously...) is that mine doesn't, and the Haynes manual shows one.

    I discovered this when I finally got around to starting the process of replacing the rear strut insert.

    The second question is: Does the STOCK front strut assembly have bump-stops?

    Again I ask because I realized AFTER I got both front strut inserts replaced that there were no rubber bump stops present. In this case the Haynes manual does NOT show bump stops on the 240Z strut. Only the diagram for the 260Z shows a rubber bump stop, but all the aftermarket catalogs seem to imply that they should be installed on all models of the Z cars.

    I am not sure where bump stops would even fit on my 240, because there is a pretty deep recess in the upper spring retainer housing and it would take a long spacer to get past the steel part.
    '71 240Z, Because any fool can drive fast in a straight line.

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    Question 1. No, not on US (HLS) models, they didn't appear here as standard till sometime late in the 72 model year. Other markets did have rear sway bars during all the model years.

    Question 2. Yes, there is a stock bump stop in the upper spring perch or insulator. It's not a true rubber, and as such, has probably fallen out in pieces due to dry rot over the years.
    "If it weren't for fools, the rest of us could not succeed." Mark Twain.

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    Registered User Walter Moore's Avatar
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    Thanks, at least one answer was what I wanted to hear...

    I really hate the thought of pulling those front struts off and tearing them apart again, but I guess better now than after I get the fenders back on.
    '71 240Z, Because any fool can drive fast in a straight line.

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    Well, at least you were thinking ahead enough to ask before you put it all back together......

    You can get urethane bumpstops from MSA and possibly from MidwestZ. They should last forever.....
    "If it weren't for fools, the rest of us could not succeed." Mark Twain.

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    Default AS usuall

    2many is spot on, if I remember correctly late 72 definetly 73 models came with a sway bar on the rear.

    HEHE as far as the bump stop material, what would you call that stuff in there

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    Default Re: Did the 71 240 have rear sway bar?

    Originally posted by Walter Moore
    I have a couple of questions. I am afraid that I already know the answers, but here we go.

    First, Did the 71 240Z have a rear sway bar? The reason that I ask (obviously...) is that mine doesn't, and the Haynes manual shows one.

    I discovered this when I finally got around to starting the process of replacing the rear strut insert.
    I've owned 71, 72, and 73 240Z's (HLS30) and none of them came from the factory with a rear sway bar. There were some 1973 registered 240Z's that did come with them, but they were manufactured after the 73 registered Zcar that I owned (2/73).

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    Hi Folks,

    My 5 of 71 Z had no rear bar. It was a 4 speed.
    My 8 of 72 Z has no rear bar. It is an automatic.
    My 2 of 73 Z has a rear bar. It is a 4 speed.

    Dont know what the correlation is, maybe Nissan thought the slush box cars wouldnt be driven hard but they were proven wrong. I can send the rear end of the 72 out at any hard left or right turn. Makes for great fun.

    My 2 cents.

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    Former frequent poster sblake01's Avatar
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    I read somewhere that the transition to having a sway bar was 2/73. Based on Carl and ChrisA's response, it must have been sometime druing the month. That's why it's so hard to pin down some of these things. So many things about the early cars are not clear cut.
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    Originally posted by sblake01
    I read somewhere that the transition to having a sway bar was 2/73. Based on Carl and ChrisA's response, it must have been sometime druing the month. That's why it's so hard to pin down some of these things. So many things about the early cars are not clear cut.

    This is quite true. Also, unless one is the original owner, or has owned the car for virtually it's entire existance; a rear sway bar found on an early car COULD have been added by a Previous Owner at some point in the past 30 years. They were a quite common after-market add-on piece, sold by many companies such as Mulholland, Interpart, and Quickor to name but a few.

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    Registered User civ104's Avatar
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    Looking at the information on the fiche, I would say the rear suspension was revised /updated in 7/73. That was probably the time they finally added the rear swaybar.
    Chuck Vigdor
    1970 240Z
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    Supporting Member ChrisA's Avatar
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    I think Chuck is right, I crawled under my 2 of 73 Z and the rear bar mounting is not stock according to the microfiche. Plus the bar is bigger diameter than stock also. FWIW!

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    Originally posted by civ104
    Looking at the information on the fiche, I would say the rear suspension was revised /updated in 7/73. That was probably the time they finally added the rear swaybar.
    This could certainly be the case. I just checked the info on the 73 that I owned, at it was actually mfg'd in 3/73. I know for certain that it didn't come with a factory rear bar (I added one).

    7/73 would have been very close to the end of 240Z (HLS30) production, so if this is when the rear bar began to be installed by Nissan, there probably aren't very many (HLS30) 240Z's that were built with this item.

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    Default Rear sway bar mount

    My 1/73 has the mounts (as all 73's should), but does not have a sway bar. I was under the impression that no 240's came with a rear sway bar stock.

    I was stripping some parts from a 78' 280Z with an R200 differential and saw the rear sway bar, so I nabbed that too. Unfortunately, there is a minor difference between the two S30's. The mounting points for the 280Z are much lower than the 240. So the sway bar is straight. To use the stock sway bar mounts, the sway bar must have a section in the middle that dips down so it can clear the differential.

    I think you can find a sway bar that would use the stock mounting points for a 73', but I think it would be better to buy a kit that mounts the bar off of the supports the rear mounting points of the a-arms. Like the one Arizona Z Car has. It's a ground control kit, I think.
    Alien-E : 1973 240Z

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    Default Re: Rear sway bar mount

    Originally posted by alien-e
    My 1/73 has the mounts (as all 73's should), but does not have a sway bar. I was under the impression that no 240's came with a rear sway bar stock.
    240Z's destined for the North American market never came with a factory rear bar. Some chassis delivered as 73 models in the US did have the mounts, but there was never a bar supplied in those mounts for US delivery. 240Z's in some other markets around the world DID receive a rear sway bar from the factory.

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    Supporting Member ChrisA's Avatar
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    So...do you guys think I can put a 280Z rear bar on my 72? I have access to three junkers with bars.

    Thanks,

    Chris
    1973 240Z HLS30-156693

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    Registered User alien-e's Avatar
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    You would have to move the mounts to a lower postion to get the stock 280Z sway bar to fit. If there isn't a mount, you would have to buy some or cut them off of the 280.
    Alien-E : 1973 240Z

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    Supporting Member ChrisA's Avatar
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    alien-e said: "You would have to move the mounts to a lower postion to get the stock 280Z sway bar to fit."

    Do you mean the end mounts or the main bar mounts?

    Thanks,
    Chris
    1973 240Z HLS30-156693

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    Registered User alien-e's Avatar
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    You would have to move the mounts to a lower postion to get the stock 280Z sway bar to fit. If there isn't a mount, you would have to buy some or cut them off of the 280.
    Alien-E : 1973 240Z

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    Former frequent poster sblake01's Avatar
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    Originally posted by alien-e
    You would have to move the mounts to a lower postion to get the stock 280Z sway bar to fit. If there isn't a mount, you would have to buy some or cut them off of the 280.
    Twice! Is that kinda like 'Listen to the words coming out of my mouth?'
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    Uhhhhh????
    1973 240Z HLS30-156693

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    Registered User alien-e's Avatar
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    I hit submit and the little e in the corner just kept spinnin'. It was unintentional.
    Alien-E : 1973 240Z

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    Registered User alien-e's Avatar
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    ...also, to answer your question, that would be the main bar mounts. The ones welded to the frame.
    Alien-E : 1973 240Z

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