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Re: MP torsion bars available again? [Re: boydsdodge] #1663803
08/29/14 08:06 PM
08/29/14 08:06 PM
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Fly Over States
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PHJ426 Offline
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The price is not really that bad.

Are the wheel rates for the FF 1.12" E body bars close to that for the wheel rates of the Hotchkis 1.10" E body torsion bars.

From what I read the Fox shocks are calibrated more closely to what the Hotchkis 1.10" Ebody torsion bar wheel rate and the Bilsteins are calibrated more closely to the wheel rate of the stock E body Hemi torsion bar size?

For me it is more of a I need a set of T bars and shocks that are matched than I need to put a set of C body 1.5" torsion bars in this barge and not have a set of shocks that work with that wheel rate.

Since a torsion bar is the spring and that holds the car up and the shock dampens the wave as the car hits the ruts and bumps. Granted I could get a set of QA1's but I am not even qualified to know if they will even work in the range......

Re: MP torsion bars available again? [Re: DGS] #1663804
08/30/14 12:13 AM
08/30/14 12:13 AM
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Ontario,Canada
brads70 Offline
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Quote:

Quote:

[quote
Quote:

I was under a 2006 Ford Ranger 4x4 they other day when I noticed it also has a torsion bar suspension.




As do late model Chevy trucks and a few other light duty SUVs. There is no shortage of t-bar manufacturers with the proliferation of t-bars in newer vehicles. Problem is getting them to tool up a bar specific to a vintage Mopar.



Yes my 2007 Suburban has them too but they are too long, the ranger ones seemed to be the correct length for B/E-Bodys. That's why they caught my attention. Most likely cheap at wrecking yards and if you machine them anyhow to fit the socket you could adjust the clocking as well. If I didn't already spring for 1.120" I would give it a try. Also I wonder if thicker ones are available for different sized engines?





Are the hexes offset?




I never noticed? It was hard to get an accurate length measurement too.

Re: MP torsion bars available again? [Re: BigBlockMopar] #1663805
08/30/14 05:48 AM
08/30/14 05:48 AM
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Graz, Austria
DGS Offline OP
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Quote:

I see prices ranging from $190 - $300 for those (new) bars.
Pretty stiff for a mass-produced item.




but should be available for much less at a wrecking yard (the Astro bars).

Re: MP torsion bars available again? [Re: DGS] #1663806
08/30/14 06:19 AM
08/30/14 06:19 AM
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NorCal
RylisPro Offline
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I really feel that my car needs a thicker bar than 1.12". I don't like the way it bounces over bumps.
Maybe it will feel different if I lose more front end weight.


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Re: MP torsion bars available again? [Re: DGS] #1663807
08/30/14 07:08 AM
08/30/14 07:08 AM
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The Netherlands
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I've read the (stock) 41" Chevy-bars were prone to rust and the aftermarket ones somehow solved that by making shorter (?) 35" bars.
I like to know what kind of setup these cars use to be able to simply run a 6" shorter torsion bar without any other mods...??

It's those shorter 35" bars I would be interested at because I have an A-body (and a few C and older Mopars).
But chances are still very slim to find a Chevy with replaced shorter 35" bars in a junkyard (here in Europe even less likely).

Re: MP torsion bars available again? [Re: RylisPro] #1663808
08/30/14 11:22 AM
08/30/14 11:22 AM
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PHJ426 Offline
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Quote:

I really feel that my car needs a thicker bar than 1.12". I don't like the way it bounces over bumps.
Maybe it will feel different if I lose more front end weight.





How big of bumps is your Cuda jumping over?

Re: MP torsion bars available again? [Re: PHJ426] #1663809
08/30/14 01:02 PM
08/30/14 01:02 PM
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NorCal
RylisPro Offline
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Just on back roads driving. I haven't been to a smooth track yet so we'll see. Weight transfer feels good though
I just like really stiff suspensions.


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Re: MP torsion bars available again? [Re: PHJ426] #1663810
08/30/14 03:55 PM
08/30/14 03:55 PM
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Long Island, NY USA
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Quote:

Quote:

I really feel that my car needs a thicker bar than 1.12". I don't like the way it bounces over bumps.
Maybe it will feel different if I lose more front end weight.





How big of bumps is your Cuda jumping over?




I have 1.15s in stock!

Re: MP torsion bars available again? [Re: boydsdodge] #1663811
08/30/14 08:30 PM
08/30/14 08:30 PM
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Pikes Peak Country
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Come on guys, I don't make a lot of money. But for what we are asking these bars to do and the experience that Firm Feel offers along with the bars, I don't think $300.00 $400.00 is too much to ask for our small party.





True. And given the limited number of t-bar rates out there, I suggest setting up the front first, then backing into matching rear rates as leaf springs are much easier to get customized.

However, we do suffer in comparison to other makes that have springs from 150# to 1500# in 50# increments for $100 a pair. IMO, its just part of being a mopar guy. If it bothers you that much, you can always put in coil overs or do what kotacars suggests and convert your Mopar to use DSE components.

Re: MP torsion bars available again? [Re: RylisPro] #1663812
08/30/14 08:33 PM
08/30/14 08:33 PM
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Ontario,Canada
brads70 Offline
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Quote:

I really feel that my car needs a thicker bar than 1.12". I don't like the way it bounces over bumps.
Maybe it will feel different if I lose more front end weight.





Sounds like a shock issue?

Re: MP torsion bars available again? [Re: brads70] #1663813
08/30/14 08:49 PM
08/30/14 08:49 PM
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NorCal
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Quote:

Sounds like a shock issue?



Probably what it is. Although I am only 4 clicks from the stiffest setting.
Going to lose front end weight first before changing out any torsion bars.


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Re: MP torsion bars available again? [Re: RylisPro] #1663814
08/30/14 09:50 PM
08/30/14 09:50 PM
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Lethbridge, AB, Canada
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Quote:

Quote:

Sounds like a shock issue?



Probably what it is. Although I am only 4 clicks from the stiffest setting.
Going to lose front end weight first before changing out any torsion bars.





what shocks are you running?

Re: MP torsion bars available again? [Re: dangina] #1663815
08/31/14 12:01 AM
08/31/14 12:01 AM
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Hotchkis single adjustable


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Re: MP torsion bars available again? [Re: RylisPro] #1663816
08/31/14 11:19 AM
08/31/14 11:19 AM
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Santa Fe Springs, CA
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How does it "bounce" over bumps? Can you describe what kind of bump you are referring to, and how does it feel?

Re: MP torsion bars available again? [Re: Dan@Hotchkis] #1663817
08/31/14 11:54 AM
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A single adjustable shock is adjustable on the rebound. This is an adjustment of the rate the shock allows the spring to decompress after it has been compressed from an upset in road surface or driver input from weight transfer on cornering.

If a car is sprung too stiff will the car "jump" or provide a jarring feel in the car if its upset by road surface on a city street that is less than optimal?

The amplitude of the jump feeling from the road surface obviously depends on the rate of change(ramp), amount of change (amplitude) and duration of the upset the wheel and tire see when coming off the flat surface.

Hence this gets back to the small vs large T-bar debate and Tom Quads empirical evidence as acquired from the Black n Blue Charger and his AAR on Watkins Glen and road driving as well as true street driving of these cars...

Any suspension tuning software/analysis always assumes "rigid body" no deflection of the torsion bar cross-member and through the entire unibody structure in our cars case.

If someone wants to live with the compromise of street driving their car and be on high alert for every pot hole and washboard section of road to get that last bit of performance out of the chassis tune on the track to reduce dive etc etc...By having a car that is overly sprung and uncomfortable to street drive then that is the compromise that must be accepted......is this true or not so much?

Re: MP torsion bars available again? [Re: PHJ426] #1663818
08/31/14 12:33 PM
08/31/14 12:33 PM
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You are pretty much on the money from where we see it. That said, everyone has a different idea of how they want their car to ride handle. We like a sportier suspension, not all out race ride. A ride quality to an M3 or AMG for example. The ride should be smooth and compliant, but the harder you push, the more your suspension should be there. Give the driver confidence.

My biggest concern with the big bar argument is the chassis. If the suspension can't move, the body will. Also, impacts will be transmitted to the occupants of the car. My car as well as Mitch's are a lot better preserved than a lot of the cars that are out there, however I still have done a fantastic job of tearing out and blowing up pieces of my car. Your mileage may vary. When we build and design parts and make the tuning suggestions we do, it's not based on "what that one guy was able to get away with with that one car that one time." We have to base line our product over an entire fleet of cars and thousands of customers. Most of which may be starting with less than ideal 40 year old cars. The great thing about what we have brought to market is a truly modular system that allows the end user to have a well balanced car that will meet or exceed the needs of 95% of the market.

Re: MP torsion bars available again? [Re: Dan@Hotchkis] #1663819
08/31/14 02:26 PM
08/31/14 02:26 PM
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Quote:

How does it "bounce" over bumps? Can you describe what kind of bump you are referring to, and how does it feel?



I drove my car around again to figure out exactly what I was talking about. It is when the front end goes over a dip or a bump and comes back down that it feels like it takes a moment for everything to settle. It feels like I can't really steer for that brief moment and I'm just holding on for the ride.

It's really just me nit-picking. My other car is an S2000 CR that I am constantly comparing my Cuda to. I've never driven an M3 or AMG but they probably feel like a boat compared to my stiff little Honda.

Don't get me wrong though the Cuda's suspension feel great! One of my S2000 track buddies was laughing at it but after he drove it around some turns, he finally understood how fun the car is haha!

It is a testament of the factory torsion bar suspension and changes Hotchkis has done to it.


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Re: MP torsion bars available again? [Re: RylisPro] #1663820
08/31/14 05:02 PM
08/31/14 05:02 PM
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Santa Fe Springs, CA
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Hmm..still sounds a bit off. The car should be pretty tight. Like go-kart tight. I would check steering (slop and bump) and then look at the shocks. also check to make sure you are riding or hitting the bumpstops. Cars do scary things when the suspension is bottomed out. I'd also do a nut and bolt on the front suspension, make sure nothing is loose. Check heims, everything. When were your UCA's produced?

Re: MP torsion bars available again? [Re: Dan@Hotchkis] #1663821
08/31/14 05:35 PM
08/31/14 05:35 PM
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Yeah in the process of doing exactly that as we speak since I have a trackday Sept. 20th.
I have a bunch of days to tighten any loose ends. No idea where UCAs were made but they are Hotchkis.
Why does it matter?


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Re: MP torsion bars available again? [Re: RylisPro] #1663822
08/31/14 05:45 PM
08/31/14 05:45 PM
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Santa Fe Springs, CA
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Quote:

Yeah in the process of doing exactly that as we speak since I have a trackday Sept. 20th.
I have a bunch of days to tighten any loose ends. No idea where UCAs were made but they are Hotchkis.
Why does it matter?





Depending on the production date there have been a couple revisions to the design. When you replace the UCA heims, its a good time to upgrade.

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