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Questions tagged [torque]

Measure of the force applied to an object that causes it to rotate.

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0 votes
2 answers
1k views

Valve cover gasket; Torquing the cover

I am taking notes on the proper installation of a valve cover gasket. I plan on using Permatex Ultra Black RTV silicone in the process. One suggestion I read is, after applying the gasket, silicone ...
1 vote
1 answer
163 views

What exactly is Dewalt's "precision wrench" mode?

I bought a Dewalt DCF900 impact driver. I've read their 2 sentence description of precision wrench mode, and still am not sure how to use it. Other than offering "greater control"...I'm ...
0 votes
1 answer
149 views

How does an epicyclic center differential multiply torque to the rear axles?

I have heard certain AWD cars have an epicyclic center differential that provides more torque to the rear axles than the front axles. I have watched a video by KYLE.ENGINEERS (link https://youtu.be/...
1 vote
1 answer
33 views

What is the right torque wrench for a 25 Nm (18.4 lb.ft) oil filter housing?

Click-style 1/4″-drive torque wrenches typically go as far up as 20 Nm (14.75 lb.ft). Beam-style 1/4″-drive ones don't even reach that high. Neither is suitable for torquing the oil filter housing at ...
1 vote
1 answer
63 views

No torque wrench - help needed

I am doing a budget piston rings replacement on my car and I want to tighten the conrods back. The manual says: 13nm+60°+15°. The thing is that I only have a 20-60nm wrench. How tight is that 13nm+60°+...
1 vote
1 answer
72 views

Can I use the "Auto" mode on my Hercules impact wrench to safely put lug nuts on?

I'm new to DIY auto mechanic stuff, and I just bought a Hercules 1/2" compact impact wrench (HCB84B2) mainly to get lug nuts off the car. I know you're not supposed to use impact wrenches to put ...
1 vote
1 answer
38 views

Installing Rubber Parts Final Tightening Carried Under Unladen Condition With Tires On Ground

If the weather permits I will be replacing some front end suspension parts on my Nissan Almeras N16 2006. The transverse link/control arm, tie rod ends, stabilizer bar bushings and stabilizer ...
0 votes
1 answer
60 views

Massive torque dip specifically at 1500-1700rpm

I have a Ford Fiesta SE from 2012, and I've had this issue for months that feels like a Damocles sword above my head. Mechanics can't pinpoint it, I'm trying here. I have a massive torque dip around ...
0 votes
0 answers
53 views

Nissan Torque specs

I'm replacing the torque mounts on my 2014 Nissan Sentra S. I don't want to over tighten the bolts. So I am looking for torque specs for the torque strut mounts. (rear and front side) 18mm flanged hex ...
4 votes
5 answers
5k views

How to increase low end torque in motorcycle?

I have Honda CB Trigger 150cc 14BHP@8500 & 12.5NM@6500. Whenever I ride in higher altitudes (above 3000m), Its power decreases gradually. Is there a way to increase the low end torque without ...
1 vote
1 answer
220 views

I have a required torque of 30nm +100° +-5°, I have a torque-wrench 40nm-210nm. Can I convert the required setting to my TW somehow?

I have a required torque of 30nm +100° +-5°, I have a torque-wrench 40nm-210nm. Can I convert the required setting to my TW somehow? I'm hoping there is some kind of conversion whereby the 30nm can be ...
3 votes
1 answer
328 views

Is there a work-around for a lack of clearance to use my torque-wrench?

Having shelled out for a torque-wrench, there is insufficient space/clearance to use it on a K7M engine. I have no workshop so am light on tools. I'm hoping the only answer is not "buy a suitably-...
0 votes
0 answers
147 views

How does an epicyclic differential split torque?

How does an epicyclic differential split torque even when rotating as a single locked unit with no relative motion between its parts? Should it not have 50/50 torque split because its all rotating as ...
2 votes
0 answers
968 views

Understanding the process of tightening head bolts properly

In some cars like some Peugeot & Citroen models, there is a specific stage during the process of tightening the head bolts. For example, in Haynes manual of Peugeot 405 it is stated that head ...
4 votes
2 answers
23k views

Can I use my 1/2 inch torque wrench with smaller sockets?

I have a relatively expensive 1/2-inch torque wrench. Not all of my sockets are 1/2" and many of them are smaller. Is there any problem with using a socket adapter, so I can use my 1/2-inch torque ...
3 votes
1 answer
1k views

Why does the wheel size affect the cars gearing?

Using online gearing top speed calculators I realized that the bigger the diameter of the wheels, the higher the theoretical gearing top speed is. Why is that? Why does bigger wheel act as increasing ...
9 votes
2 answers
3k views

I stored my click torque wrench in a mid-high setting. Is it ruined?

It's an EPAuto 1/4" drive 20-200 in-lbs. I stored it at mid to high setting, and it stayed that way for months, unfortunately. Is it now significantly off from calibration?
11 votes
5 answers
24k views

Aligning a castle nut with a torque spec to a cotter pin hole

The nuts at the knuckle on my outer tie rod ends are castle nuts, which are locked by cotter pins fed through holes in the studs. The nuts also have a torque spec (27.0±2.5 N∙m, in this case). If I ...
2 votes
1 answer
682 views

Understanding "torque-to-yield" concept

Can you help me understand the general "torque-to-yield" concept, which is often used for head bolts. In the case of my Tacoma, the head bolts are specified to be torqued to a spec of 27 ft/...
5 votes
1 answer
1k views

How many times can you go through a torque sequence when installing heads? I'm worried I messed up and should try again but don't wanna make it worse

2002 Ford Escape Cylinders 123 456 Rear Bolt Order (see picture below) 8426 7135 Front Bolt Order 7135 8426 Torque Sequence 1 30 ft lb 2 tighten 90 deg 3 loosen 360 deg 4 30 ft lb 5 turn 90 deg 6 turn ...
3 votes
0 answers
77 views

How to use a torque wrench when there is no room for it? [duplicate]

In my car, the space between idler and tensioner bearing bolts and the chassis is so limited (as per the following picture) that you can't use a torque wrench. In fact, the torque wrench itself can be ...
2 votes
4 answers
255 views

Why are automotive engine force output specified in terms of torque [Nm] and not forward thrust [N]?

For instance, an example catalogue extract for a motorcycle reads- Bore / stroke : 102,5 mm x 76 mm. Capacity : 1,254 ccm. Rated output : 100 kW (136 PS) at 7,750 U/min. Max. torque : 143 Nm ...
10 votes
5 answers
3k views

Can I use a 15lbs torque wrench for 13lbs spark plug job

My civic has 100,250 miles and the service came up for the spark plugs. B124, I am reading and it says after replacing the plugs to torque it to 13 Lbs. The only torque wrench I have is minimum 15 LBS....
7 votes
9 answers
43k views

What is the maximum torque a 1/2 drive can withstand?

I just broke two 3/8 in. extensions trying to crack an underdrive pulley loose (specs say the pulley is at 130 ft-lbs, but it feels much higher than that). This begs the question: are there standard ...
7 votes
2 answers
648 views

what damage or extra wear (if any) is caused by turning over the engine while in gear (manual transmission)?

While newer cars never allow you to turn over the engine without the clutch depressed, in some older cars, if you do leave the transmission in gear, do not depress the clutch and turn the key, the car ...
2 votes
2 answers
2k views

What are dangers of over-torquing during a repair?

Given an automotive job like rear-suspension replacement of shocks, what are the dangers of over-torquing and how would I know from the failure mode that I cause? If the bolt and nut survive over-...
2 votes
1 answer
281 views

Does DeWALT Precision Wrench™ eliminate the need for a torque wrench?

My DeWALT impact wrench DCF923B has a feature called Precision Wrench™. This is defined elsewhere as, "In Forward, the tool will pause before impacting to help prevent overtightening. In Reverse, ...
0 votes
2 answers
223 views

Front crankshaft bolt removal

The front crankshaft bolt, that secures the harmonic balancer, which is also the driving pulley of the drive belt, is 184 ft/lbs on my Tacoma. The Haynes manual says to use a pin spinner to lock the ...
13 votes
6 answers
12k views

Is double-clicking a mechanical torque wrench just a habit?

I'm wondering if there is any benefit behind double-clicking when using a mechanical torque wrench. Could it be that some folks do it to compensate for slack in the ratcheting mechanism? In other ...
18 votes
3 answers
3k views

Should a mechanical "click" Torque Wrench be set to zero when not in use?

I have a standard click torque wrench. I was told I should set it to zero when not using it in order to keep the accuracy high. Is this true? Secondly, I have not been doing this since I purchased ...
12 votes
6 answers
7k views

Why tighten down in a criss-cross pattern?

I believe almost everyone working on a car in any capacity has heard this, many things should be tightened down in a criss-cross pattern. Why? What is the rationale behind it? I can imagine several ...
3 votes
2 answers
2k views

Single torque value vs torque plus angle (TA)

Car manufacturers state different kinds of tightening procedures for certain bolts. Some of them only state a single torque value (like 130 nm) while others suggest a low torque value (say 40 nm) plus ...
0 votes
1 answer
2k views

Average human force and torque wrench length

I'm going to buy a torque wrench for some high-torque bolts in my car. I need a torque wrench to torque bolts from 130 nm (95.8 lb-ft) to 160 nm (118 lb-ft). I found some torque wrenches which support ...
0 votes
1 answer
64 views

Torque wrenches of the same force but different head size

I am looking at two torque wrenches both are: same length same force The ONLY difference is that one is 1/4 and the other is 3/8. I know adaptors don't affect the accuracy but which one to get? ...
0 votes
1 answer
230 views

Is there any way I can tighten my crankshaft pulley without a torquemeter?

My crankshaft pulley requires 130 nm (95 lb-ft) of tightening torque. I have a torque meter but it only supports up to 80 nm. I can't afford to buy a separate torque meter just for crankshaft pulley ...
0 votes
1 answer
80 views

Anchor 2866 engine torque strut mount is missing in my car does that make my car take off slow?

Anchor 2866 is missing completely and the passenger mount is completely shattered and now my car is failing to launch properly. It takes a bit to get it going but once it's going it goes. Will ...
6 votes
2 answers
688 views

How to re-torque a partially loosened overhead camshaft?

While doing a timing belt service on my 17 year-old, 57K-mile truck (DOHC), I was having a very hard time getting it to let go of the front oil seals on the intake camshafts.1 I eventually realized ...
1 vote
1 answer
6k views

Torque lugnuts in air and on ground

When changing tires, on a front wheel drive vehicle with alloy rims, the parking break on, and entire front or back end lifted: after hand tightening the nuts, can they be torqued to spec off the ...
1 vote
2 answers
2k views

I am looking for cylinder head bolt tightening torque specs for a Benz OM651

I am currently working on a Benz Vito bus engine and cannot find the engine tightening torques. I have search all over the web for this information with no luck. Thanks in advanced.
1 vote
2 answers
6k views

What range torque wrench for automotive work?

I have slowly started working on my own vehicles and have decided I need a good torque wrench. Looking online I find many options. But I am unsure what torque range I will need my wrench to cover. I ...
8 votes
3 answers
13k views

Do I need to lift my car up before adjusting lug nut torque?

I recently put new wheels on my car. I don't have off-street parking, much less a garage to work in, so I had the wheels installed by a mechanic. Since they were installed, they have been driven ...
6 votes
3 answers
5k views

Why do service manuals specify a range for torque? Are there any reasons for being at one end or the other?

The service manual for my vehicle specifies torque for most nuts and bolts in ranges. Are there any reasons to be at the lower or higher end of the range, or somewhere in between? Different expected ...
12 votes
4 answers
18k views

Torque spec variance with Anti-Seize

I see a lot of variances with torque specs when a fastener is lubed with anti-seize. Some places say 25% less torque is required for same clamping load, some places say 40% less is required. I'm ...
1 vote
3 answers
248 views

RPM AND TORQUE IN INTERNAL COMBSUTION ENGINES

IN internal combustion engines, when the explosion in the chamber occur producing power this power appears as an increase in torque and RPM, what confuses me is that how I could raise the RPM while ...
7 votes
5 answers
64k views

How to measure angle when ratcheting a bolt?

The torque spec for my Tacoma says that cylinder head bolts should be torqued (in a specific sequence) to 27 ft/lbs initially and then again each should be turned another 180 degrees in the same ...
1 vote
2 answers
6k views

Do torque settings need to always be according to spec?

My car lug\wheel nuts need to be torqued to 80 ft pounds. I know some people go by feel. Does it matter if you are a bit lower or higher e.g. 70 or 90? what if the difference is 20 ft pounds give ...
4 votes
2 answers
860 views

Use a torque bar when removing rusted bolts, to prevent impact driver from breaking them?

Newbie, starting to work on my own cars, and I'd like to use air tools to save wear and tear on my wrists and arm muscles, and not aggravate back pain from a car accident years ago. There are many ...
2 votes
2 answers
1k views

Does a digital torque adapter requires calibration?

I've been looking to buy a digital torque adapter to use with my wrench, as an alternative to a click torque wrench. I know that click torque wrenches requires calibration after ~1000 clicks or one ...
0 votes
0 answers
72 views

Volvo - send commands to read DTCs

I tried finding out the commands a diagnostic tool sends to my Volvo and I got this - 1D D0 16 16 03 22 F1 86 Protocol - CAN 29/500 (elm command: AT SP 7) Can someone help me with the method to ...
0 votes
2 answers
129 views

What would cause a "muscle car" to not be able to drive up a hill?

I was at an event recently where the employees were guiding cars into a grassy field to park. Cars ranging from Toyota Camrys to Chevy Suburbans were driving up a small hill that was around 3-4 feet ...