Torquing Gland Nut for Endplay Calculation

[hulbyw]

More questions if I may.
I have a Berg HD gland nut and the instructions say torque it to 320-350 ft lbs but to use another gland nut to set end play (I have another standard nut). I can borrow a torque multiplier, use a battery impact wrench which has a max 265ft lbs or use a cheater bar. Berg says never use an impact but that was a very long time ago and I am wondering whether opinions have changed? A friend reckons the torque multiplier is only good for undoing, as it is not accurate.
If I use the standard gland nut for end play torqued to 220 ft lbs as per Bentley manual, will the end play still be the same if I torque the Berg nut to 320 ft lbs?
Flywheel is a lightened OEM with 8 dowells

[Who.Me?]

[Glenn]

I use a torque multiplier to install and used an old gland nut for endplay setting.

Never a problem..
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"

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[Dale M.]

NO IMPACT!..... Use torque multiplier.... I use a aftermarket 4:1 multiplier, and it is spiral sun gear driven, so there is no margin for error unless it was built in at manufacturing.... Which I doubt would have error factor.... A standard 150ft-lb input torque wrench can give up to 600ft-lbs on output....
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“Fear The Government That Wants To Take Your Guns"
"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
============================================================
All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ...

[Rob Combs]

The least accurate and reliable method would be the impact.

As to the question about whether you’ll see a difference in end play, it’s highly doubtful you’ll get a measurable difference. The measurable differences all but end when the flywheel seats firmly on the crank.

I had no measurable difference in end play between ~ 20 lb ft and 340 - Scat crank, Scat flywheel, old original gland nut for mock ups, Berg gland nut for the final assembly (to be clear I didn’t fully trust the old gland nut and only took it to ~ 250 for the final verification before installing the Berg nut).

[runamoc]

[jimmyhoffa]

Ignoring the rotational friction of the pinion gear on a torque multiplier and how that may subtract from the final applied torque on the gland nut is a bold assumption to punch in a "0" for, but I donno, maybe just tack on 10-15%? Just spitballing there. There's already enough variability in the thread friction of the gland nut, I'm not in the market to add more, though many do.
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[Glenn]

The top one is a VW Factory tool for doing the gland nut.

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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"

Member #1009

#BlueSquare

עַם יִשְׂרָאֵל חַי

[BFB]

ive seen no measurable difference with the gland nut at 50 lbs, 2 ooga-dooga's, or 300/350ft/lbs.
before I got my 3/4" drive torque wrench id put all my 220lb ass on a 24" breaker bar a few inches from its end. ( 220lbs x's approximately 1.5' =330 ft/lbs ) and I double checked that when I got the 3/4" drive torque wrench and it was damn near spot on.
300/ 350 ft lbs really isnt all that much nor complicated enough that you need to be mathing out gear loss and multiplying shit.
if your dead set on an impact you could use a torque stick with it
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"how am i supposed to torque the rear wheel nut to 250 ft lbs??? " - clonebug
An interesting thing happens in forums where everyone starts parroting the same thing and "common knowledge" takes over.
Most experts aren't.

[Dale M.]

For the skeptics on using torque multiplier there is this.....

https://www.harborfreight.com/34-in-drive-150-to-750-ft-lb-digital-torque-adapter-58707.html

https://www.walmart.com/ip/Neiko-20743A-3-4-Inch-D...SellerId=0
_________________
“Fear The Government That Wants To Take Your Guns"
"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
============================================================
All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ...

[hulbyw]

Thanks to all. Will borrow the torque multiplyer. If I am not happy with that I will hire a 3/4" torque wrench.
The digital one at Harbour Freight would be ideal however a similar one in Australia is $269 Australian dollars, so not really viable for doing 1 gland nut and 2 rear axle nuts

[runamoc]