About Eibach Bolt On Spacers torque

[javigongon]

Hello fellas!

I know it´s a pretty used topic, but been researching for days and i can´t get a clear conclusion. Seen a lot of old posts with various opinions, also tried to contact Eibach and Ford (in Europe Ford sells the eibach spacers as original part).

What i have learn at the moment? Come with me in this terror history:
- Eibach USA rep told me that he believed that they had tested them to 145lb/ft, but since they are made in Germany would check with them. No news from him.
- Eibach Germany rep told me that they had "heard about Ford's high torques", and only sended me a capture of a TUV certificatión document that says that the minimum torque for the spacer model is 110Nm, and that's for the system 4 model, no word of the Mustang specs.
- An Eibach youtube video states that the spacers must be torqued to oem spec, but I keep reading that 150ft lb is too much for an aluminium bolt on spacer.
- A user here told some years ago to torque to 125ft lb and use blue loctite, but i would prefer not to use loctite, apart that, if i am not misunderstood concepts, applying any compound on the threads makes it to be more torquered.

So, is here some kind of recent consensus in more recent times? What specs have people used over the years with succes?

Thanks everyone!

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[MarkM]

Really not a fan of bolt ons, but most failures are probably due to over tightening, 150lb is way to much imo, should be closer to 100 and keep checking them!

 

[EFI]

So, is here some kind of recent consensus in more recent times? What specs have people used over the years with succes?

The consensus is that if you must use bolt-on spacers, they should be torqued down to the OEM specs as it's in reality just an extension of the OEM hub. If the manufacturer of the spacer does not recommend such high values because their product might break, then that product should not be used on that vehicle.

You should find a similar product that is built well enough to tolerate OEM levels of stress and clamping force.

 

[javigongon]

The consensus is that if you must use bolt-on spacers, they should be torqued down to the OEM specs as it's in reality just an extension of the OEM hub. If the manufacturer of the spacer does not recommend such high values because their product might break, then that product should not be used on that vehicle.

You should find a similar product that is built well enough to tolerate OEM levels of stress and clamping force.

Really not a fan of bolt ons, but most failures are probably due to over tightening, 150lb is way to much imo, should be closer to 100 and keep checking them!

Thanks for your replies guys.

Let see if eibach tells me something, for now, i installed them to 125lb to the hub, and 145 on the wheels to the spacers. Considering that i'm far from understanding the basis on the specs, tha option wich i like more is to torque everything to Ford specs.

 

[Melmark93]

The consensus is that if you must use bolt-on spacers, they should be torqued down to the OEM specs as it's in reality just an extension of the OEM hub. If the manufacturer of the spacer does not recommend such high values because their product might break, then that product should not be used on that vehicle.

You should find a similar product that is built well enough to tolerate OEM levels of stress and clamping force.

I agree with EFI. To have a better selection of drag radials, I run 19" GT350 (19x11) wheels on the back of my '20 GT500. The wheel offset difference is 12mm, so I use 20mm Eibach bolt-on spacers.
Torque spec for the 500 is 150 ft/lb, so that's what I use on the spacer bolts. To get a better grip on the spacer nuts in the spacer recess, I ground a 19mm inpact socket conical on the outside edge. I have run this setup for a year with no problem.

 

[javigongon]

I agree with EFI. To have a better selection of drag radials, I run 19" GT350 (19x11) wheels on the back of my '20 GT500. The wheel offset difference is 12mm, so I use 20mm Eibach bolt-on spacers.
Torque spec for the 500 is 150 ft/lb, so that's what I use on the spacer bolts. To get a better grip on the spacer nuts in the space recess, I ground a 19mm inpact socket conical on the outside edge. I have run this setup for a year with no problem.

Thanks for the reply! Knownig that you have the eibachs torqued to oem spec give me a lot of peace of mind.

What i have been unable to understand is what you do with 19mm impact socket, we have a language barrier here, obviously my fault, sorry.

 

[Melmark93]

Photo of socket. The tapered recess in the spacer allows a standard socket to only contact about half of the lug nut. To fully engage the nut and spread the force of 150 ft/lb over a larger surface, the socket needs to be beveled to fit deeper into the recess.

 

[javigongon]

Photo of socket. The tapered recess in the spacer allows a standard socket to only contact about half of the lug nut. To fully engage the nut and spread the force of 150 ft/lb over a larger surface, the socket needs to be beveled to fit deeper into the recess.

Understood!

Based on your experience i have more confidence now to use the 150 torque, more taking into account that you do drag runs and my mustang is just a light spirit drive weekend car.

Thanks you again!

 

[javigongon]

Hello again!

For future reference if some other user have this doubt, Eibach just confirmed me on a email that they tested the Pro Spacers up to 210NM (154ft-lbs) on the Mustang, so the 150ft-lbs torque is totally fine.

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