Torque Specs

Discussion specific to the 1995 - 2006 KDX200 (H Series) and 1995 - 2005 KDX220R (A Series) models sold in the USA
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Paulfest
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Torque Specs

Post by Paulfest »

This is from my owners manual (2002 KDX 200)
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Chuck78
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Re: Torque Specs

Post by Chuck78 »

Thanks for posting, Paul!
'97 KDX220R - purple/green! - KLX forks, Lectron, FMF, Tubliss
'99 KDX220R project - '98/'01 RM125 suspension, Titanium hardware, Lectron Billetron Pro, Tubliss
'77 Suzuki PE250 & '83 Suzuki PE175 Full Floater - restomod projects
'77 Suzuki GS750-844cc, '77 GS400/489cc & '77 GS550/740cc projects
'62 GMC 1000 Panel Truck
'88 Suzuki Samurai TDI/Toyota swaps
'88 Toyota 4x4 pickup
lucy
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Re: Torque Specs

Post by lucy »

Is there a difference between wet torque and dry torque?

If something has a little lubricant on it do you torque it to the same spec?
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Chuck78
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Re: Torque Specs

Post by Chuck78 »

lucy wrote: 05:09 am Oct 05 2023 Is there a difference between wet torque and dry torque?

If something has a little lubricant on it do you torque it to the same spec?
There definitely is, but Kawasaki doesn't provide that spec. I'm sure you could probably find a % spec for dry vs oiled/greased threads online somewhere though.
Being dirtbikes, they get covered in mud, washed off after, and ran through deep water quite often, so I'm inclined to put anti-sieze or grease on any threads, especially any that aren't a bolt into a blind hole.
'97 KDX220R - purple/green! - KLX forks, Lectron, FMF, Tubliss
'99 KDX220R project - '98/'01 RM125 suspension, Titanium hardware, Lectron Billetron Pro, Tubliss
'77 Suzuki PE250 & '83 Suzuki PE175 Full Floater - restomod projects
'77 Suzuki GS750-844cc, '77 GS400/489cc & '77 GS550/740cc projects
'62 GMC 1000 Panel Truck
'88 Suzuki Samurai TDI/Toyota swaps
'88 Toyota 4x4 pickup
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billie_morini
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Re: Torque Specs

Post by billie_morini »

Yes, wet tightening torque is lower than dry tightening torque!

Oil, grease, anti-seize paste, & Loctite are examples of wet materials.

The amount wet tightening torque is decreased is determined by hardware material, hardness, & size. The majority of hardware manufacturers, mechanical engineering codes & standards, and assorted charts & tables advise decreasing dry tightening torque by 25% to 40%. I usually go with 25% decease, sometimes 30%, as a shortcut to spending time to look up specific data. Although I do keep a generic printed table at my work bench, I'll use the 30% rule of thumb with softer materials.

The exception to my rule of thumb involves Loctite. The Loctite manufacturer says you should reduce dry tightening torque by 20% when using their products.

Oh, don't forget to:
1) Calibrate your torque wrenches every 2 to 3 years (very affordable services available, if you don't want to DIY),
2) Use a beam style torque wrench, instead of clicker style, on critical assemblies due to superior accuracy, and
3) Do NOT loosen tight nuts & bolts with your torque wrench because this can result in calibration loss
Last edited by billie_morini on 09:47 am Jul 30 2024, edited 1 time in total.
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Chuck78
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Re: Torque Specs

Post by Chuck78 »

billie_morini wrote: 08:57 am Jul 26 2024 Yes, wet tightening torque is lower than dry tightening torque!

Oil, grease, anti-seize paste, & Loctite are examples of wet materials.

The amount wet tightening torque is decreased is determined by hardware material, hardness, & size. The majority of hardware manufacturers, mechanical engineering codes & standards, and assorted charts & tables advise decreasing dry tightening torque by 25% to 40%. I usually go with 25% decease, sometimes 30%, as a shortcut to spending time to look up specific data. Although I do keep a generic printed table at my work bench, I'll use the 30% rule of thumb with softer materials.

The exception to my rule of thumb involves Loctite. The Loctite manufacturer says you should reduce dry tightening torque by 20% when using their products.

Oh, don't forget to:
1) Calibrate your torque wrenches every 2 to 3 years (very affordable services available, if you don't want to DIY),
2) Use a beam style torque wrench, instead of clicker style, on critical assemblies due to superior accuracy, and
3) NOT loosen tight nuts & bolts with your torque wrench because this can result in calibration loss

EXCELLENT INFO, Billie!
'97 KDX220R - purple/green! - KLX forks, Lectron, FMF, Tubliss
'99 KDX220R project - '98/'01 RM125 suspension, Titanium hardware, Lectron Billetron Pro, Tubliss
'77 Suzuki PE250 & '83 Suzuki PE175 Full Floater - restomod projects
'77 Suzuki GS750-844cc, '77 GS400/489cc & '77 GS550/740cc projects
'62 GMC 1000 Panel Truck
'88 Suzuki Samurai TDI/Toyota swaps
'88 Toyota 4x4 pickup
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