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“ some say, I know two facts about DeTomaso Pantera Powersteering - and both are wrong” (I’m sure a few of you know where this came from… Lol)

i’m using my C7 Corvette (which will be substituted by the Pantera)  as a daily driver, getting groceries running errands, bringing children to school and picking them up! Now, for all of you who do the same “job” you know how packed the parking lot at the grocery store can be or all the perfect driving parents (soccer moms ) at the school just try to annoy the hell out of you!

In the extremely short period I drove the Pantera,  I did notice that the steering was quite heavy, at least for me…(I’m not Working Out, skinny, slinky, tall guy… That’s me!) I know it would annoy the hell out of me as well. If I have to do it early workout every day to zip in and out of parking opportunities..The solution was obvious… Work smarter, not harder! Powersteering it is!
it seems that two predominant options are on the market, one is from SACC and one from EZ electric power steering from the Netherlands. The main difference between those two is SACC has a knob you can regulate how much Powersteering support you want, while the EZ has a sensor that is hooked into the speed drive, and automatically turns down the support of the Powersteering support related to the speed… The faster you go the less support you have! From the overall arrangement both look about the same, I think the EZ electric motor is a little bit smaller, but as it said before, I might be wrong! to make a long story short, I know myself, and I know if there’s a knob  I can turn to influence whatever it is, I will do it! Probably do it a lot… (small example for people here who have been in aviation: multi probe CHT – EGT but single read out and cylinder selection knob…i’m surprised there was any knob left when I sold the airplane)

well, that’s the hint to what my decision was!

Last edited by LeMans850i
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I am currently in the process of cleaning up the interior. Adding LED dash and interior lights. Installing some of the Pantera Electronic controllers. So, I am down that rabbit hole of while it's apart I might as well as install the SACC kit. The PO had cut up the center console that I have a replacement for also.

Thought the power steering would be a great addition, at least for me. I had an incident a couple of years ago where I didn't get turned fast enough and backed into a car that had just parked where there wasn't one before. I would have pulled forward instead if I had the power steering.

I had the EZ Electric system and found it quite amazing. Even at parking lot speeds, it still feels like "Pantera" steering, just lighter. When you are driving down the road, you don't know it's there. Your steering just feels "pre-power steering" normal. I'm talking about the kind of speeds you'd be driving at in a city. It was exactly what I wanted. Once it's installed, you forget it's there.

There's only one person I know of that's installed and driven both systems, back to back: that's Gerry Romack; President of The Great Lakes Panteras POCA chapter ( https://www.greatlakespantera.com/). The web site has installation info and Gerry can be reached at: GLPanteraClub@gmail.com . I'm sure he'd be happy to give you his thoughts on both systems. On the Club web site it mentions American Powertrain as the USA distributor but I believe EZ Electric in The Netherlands will sell direct.

I bought the power steering unit from SACC, but have not been able to test it yet because I am still working on my car.  You could also try Greg at Full Throttle Panteras.  He sells a unit that is a little smaller than SACC and I don't know how it is controlled but you can talk to him.  Scott unit seems to be good.  My 2 cents.  Larry

My target is to be done with ALL my modifications by the end of April! (For people who saw what I did so far.. I’m about halfway done) I did decide on the EZ power steering system and I have it in my hand (actually sitting here for 3 weeks already)
I will spread it out tomorrow and show what I got and then hopefully how I install it successfully!

I got the templates copied onto cardboard already…

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Last edited by LeMans850i
@husker posted:

You can also adjust castor to reduce steering effort.

I increased my caster- milling the rear of the upper ball joint.. (thread “ weirdest poly bushings”)

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More caster gives the car more stability at high straight line speeds and but will increase the steering effort required!

I don’t think decreasing caster for easier steering is justifiable… it would make the car nervous…

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Last edited by LeMans850i

IMG_513066486329441__80C4DCE4-4453-410F-B592-90E5D6AC4F73I like the SACC unit. The knob adjustment is fun to tinker with, but I’d be nice not to have an auto adjust. I mounted the box on the firewall and nob under dash column.(Look for “CNC” in pic.) It does take up a lot of room(not sure other units space) and makes it difficult to remove Speedo/tach. I have to remove Speedo first and then tach now. Just sent in Tach for calibration to Pantera Electronics. Highly recommended you do this if you have everything apart. It was off 1200RPM and stopped working at 5000RPM. My redline is somewhere around 2K higher and hard to read digital screen when this thing is screaming.😎

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Here is the EZ system:

The two bags on the top left -  two speed sensors, which one can be mounted Behind the speedometer (left) or at the speedo output at the transmission (middle)

IMG_0744IMG_0745
The brain is mounted on the bottom of the steering column… It’s right now sitting on itIMG_0746 I put the lighter next to it so you have a reference of the size of the motor!

Also the angle the motor is pointing more upwards! This is about mounting position, horizontally seen..

and it’s all German TUV approved..



I had to set it up right now for the picture! It’s too good to see them next to each other!

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Last edited by LeMans850i

I won’t install the ignition lock on the steering column! This was just too much fiddling to get the key in! it was a PITA for me!

I also printed out the instruction manual from the USA importer of this power steering system because it is a lot more complex and detailed (and upgraded) then what I got from the Netherlands:

https://greatlakespantera.com/...the%20Pantera%20.pdf

let’s see what I adopt…

Last edited by LeMans850i

Well, reading through all the instructions from the manufacturer and the distributor in the US I have to say… hmmm

both combined gives me an idea what to try to do but the task at hand is I have to cut bits and pieces of the welded bracket under the dashboard and it has to be correct or I will be screwed!

the templates are similar, but definitely not the same, the Netherlands provide one to one scale templates, US distributor templates are definitely smaller than one-to-one, but it gives you an idea I guess!

looking at the pictures from the US importer (he has the whole dashboard removed, which I really do not want to do) helps! His pictures also show what has to be trimmed and I can figure out why… I hope the end result of my trimming is more - well, How do I say that “neat”!

The explanations on the different pictures what to do probably makes sense to somebody already did the job once before… Which I haven’t!… So kind of “watch out there is something look what what” moments happening! A few arrows and pointers would be really helpful what to look at….

Now. I will go and use the knowledge obtained by the instructions from both, the pictures and figure out. What’s the right way!

it is definitely not “just follow the instructions and you will be done”! it’s like somebody gives the kit and says drill -A- hole…   -more information?-

And off we go..!!!

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top from the Netherlands

bottom US distributor





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a little bit more information would be great… Draw an arrow!!!!

I didn’t see any information about how to clock the joints - which I read is a biggie!

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Last edited by LeMans850i

I’m just pretending I’m starting from scratch… The one fixed point we have are the front mounting points! There was no instruction how much of the bottom plate has to be removed it was just drawings and some cutting going on so I’m gonna go and measure.

these are the mounting points, and what comes right after it…

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and here is the side view:

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Last edited by LeMans850i

Read… I’m playing with a bits and pieces and check them out and compare them and here’s what I found:

Powersteering assembly pictures in there US importer instructions is not the same power steering assembly as the one I got from the Netherlands!IMG_0766

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just to keep them apart, let’s call the one US and the other NL (Netherlands)

US has a tube that is clamped on, and you can adjust the slot for the steering lock… You can turn it! NL has no adjustment. It’s all one welded piece!
the more I dig into it it seems like that there was a earlier version and a later version?!??
Later in the instructions the clamp is gone..

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it seems like the mounting brackets were different too… I’m not hip about this one..

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i’m not sure if we are talking about the same thing here..

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there will be no reason to smash anything!

I will not go any further into this whole thing! It makes no sense to me! Maybe I have upgraded model… Who knows..

at this point I’m gonna abandon the US instructions!

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Last edited by LeMans850i

I spent now a few hours wrapping my head around this whole thing - aside from taking bits and pieces apart and straightening the front wheels I didn’t accomplish much. One thing I noticed was that when I turned the shaft on the power steering it feels like a big bearing filled with grease, heavy grease but nothing I would say it isn’t real resistance at all! And at the same time when I did that I ask myself, does it have a center position???!! I guess not….🤔


Digging into the NL version:

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Last edited by LeMans850i

Keep in mind, the instructions you call the “US” manual is actually Gerry Romack’s Great Lakes Pantera’s installation guide. It includes some modifications to the original unit, including one of mine! The “U” shaped mounting bracket with the steel tube going through it is something we came up with when installing my unit. Gerry liked the idea and adopted it. This is not the way any unit ever came from EZ Electric. What’s in the Dutch manual is the way it’s designed to be.

Last edited by davidnunn
@davidnunn posted:

Keep in mind, the instructions you call the “US” manual is actually Gerry Romack’s Great Lakes Pantera’s installation guide. It includes some modifications to the original unit, including one of mine! The “U” shaped mounting bracket with the steel tube going through it is something we came up with when installing my unit. Gerry liked the idea and adopted it. This is not the way any unit ever came from EZ Electric. What’s in the Dutch manual is the way it’s designed to be.

Yes! The idea with the tube is a very good one! I will do that as well and give him / you credit for it! But as it shows on the pictures, the power steering assembly has changed from the variant he is using in the instruction manual! The front mounting points are higher on my unit than the variant he used And it would be a shame if somebody would start cutting the structure in the front for no reason! Because of the front mounting points being higher (steering tube NOT protruding into the horizontal structure) the template is not correct anymore. I understand what he did for the application, but it’s not relevant for what I have received from EZ Powersteering…

Upgrading the pressed electric contacts and soldering them is also a great idea to ensure dependability!

let’s see how the NL version is doing…

Last edited by LeMans850i

All of these systems are adaptations of EPS from other vehicles. That makes installing them into a Pantera a little bit of an adventure and one should expect the unexpected.

You could even argue that current production cars are using a mostly "off the shelf" EPS that is easily adaptable to a production vehicle.



There simply are EPS systems commonly available in European production vehicles and likely other non-US markets that are not found in any combination in North America so it isn't surprising to me that the "Dutch" offering is a little different.



The plus to all of this EPS technology is that so far they all seem to apply themselves very well to this application and do not over boost like many of the US hydraulic PS systems seem to do.

The biggest challenge in building one for the Pantera is finding a "doner" that will physically fit into the extremely limited space available in the Pantera as simply as possible. Everything else seems trivial by comparison.



I would be shocked if any current "super car" was built without one now. It is such an obvious addition.

Last edited by panteradoug
@panteradoug posted:

All of these systems are adaptations of EPS from other vehicles. That makes installing them into a Pantera a little bit of an adventure and one should expect the unexpected.

You could even argue that current production cars are using a mostly "off the shelf" EPS that is easily adaptable to a production vehicle.



There simply are EPS systems commonly available in European production vehicles and likely other non-US markets that are not found in any combination in North America so it isn't surprising to me that the "Dutch" offering is a little different.



The plus to all of this EPS technology is that so far they all seem to apply themselves very well to this application and do not over boost like many of the US hydraulic PS systems seem to do.

The biggest challenge in building one for the Pantera is finding a "doner" that will physically fit into the extremely limited space available in the Pantera as simply as possible. Everything else seems trivial by comparison.



I would be shocked if any current "super car" was built without one now. It is such an obvious addition.

Don’t know if it’s true… But I heard this EPS is from a Fiat panda…

I looked at the Powersteering from the Fiat 124… The new version and the electric part is part of the steering rack - very tight very neat..

Last edited by LeMans850i

I did run into a little snag…. somebody thought it would be a good idea to make it a solid steering shaft.. a bolt run through the sleeve and shaft… plastic clip missing in action…. WHY 😱

IMG_0788

I think I got an idea now how to make a rattle free but “ breakaway” connection… the polyurethane glue for windshields.. I got 2 holes to squeeze some in the relief… don’t touch it let   dry   😅

but that’s final assembly!

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Last edited by LeMans850i
@LeMans850i posted:

Don’t know if it’s true… But I heard this EPS is from a Fiat panda…

I looked at the Powersteering from the Fiat 124… The new version and the electric part is part of the steering rack - very tight very neat..

EZ Electric buys their EPAS motors from a manufacturer in Japan, that supplies auto manufacturers, such as Nissan. This allows them access to the controller source code, etc.

I personally have done what some would call extensive research into this subject and can tell you that there are more then a couple of manufacturers of these units.

They are not at all limited to Japan. They are worldwide and many are not accessible to our US markets at all. They are made for just about any kind of three or four wheeled vehicle you can think of that needs to be steered.



Generally speaking what we see here in the US is very limited offering to what is available worldwide. However, what I found is that in my case new manufacturers, with few if any exceptions do not sell, or will not sell just one unit to you. Most you need to purchase in batches. Some as little as 10 or 12 but most in the 100 units at a time range.

So that if you are a custom builder, applying an EPS to your one specific application, you are really kind of limited to finding a used one and making it fit if possible.

Most of what is available here in North America is too big to fit into a Pantera. I had to go to the UK to find one and at that, needed to source it from a right hand drive vehicle, a Toyota Yaris, so that the motor was located on the left side of the column. The US version of that vehicle is as expected, left hand drive. The right hand drive was exactly the opposite configuration.



I personally have "built" three EPS units and was able to sell two that were too large to fit to "street rodders" where there was much more room under the dash for them to fit.

The electrical installation is actually quite simple and straight forward. Controllers are available from Bruno Antunes in Portugal @Brunossteering.com.

Unless you have the time and energy available to screw around with these systems, which most will not, I'd suggest that you consider using one of these already "re-engineered" kits. When it comes down to the value of your time and correcting the mistakes that you made, their price is really a bargain. That work has already been done by the sellers and you do not want to hack up your Pantera needlessly.

Last edited by panteradoug

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