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Valve tappet clearance on neptune motor 4g41 - Cars & Trucks

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Posted on Jan 02, 2017

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SOURCE: Valve tappet adjustment

well, I can see ur message has been here for quite some time. Most probably you got the answer to ur request.
I just did the valve clearance on the engine of my SJ413 that has the 1000cc engine of an SJ410 :
When cold: 0.13mm Intake and 0.18mm Exhaust
Engine sounded well and worked fine after that.
Enjoy
Mehdi

Posted on Feb 07, 2009

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SOURCE: Engine tappet clearances

According to http://freespace.virgin.net/tommy.sandham/databook.htm# Rocker Adjustment, the cold clearance is .008" intake/.018" exhaust in the non-GT 1500cc, and .012" intake/.022 exhaust on the GT. Sweet little car!!!

Posted on Mar 01, 2009

  • 54 Answers

SOURCE: Need Valve clearance for '93 kh ford laser

0.10 - 0.15mm inlet
0.18 - 0.23mm exhaust
but you must be carefull because the top of the valve seat becomes concave from wear, a feeler guage will not give the most accurate reading, hope i have been of some hel

Posted on May 14, 2009

  • 156 Answers

SOURCE: valve tappet clearance of toyota 7k engine

7k clearances are ( HOT ) Inlet 0.008 in ( 0.20 mm )
Exhaust 0.012 in ( 0.30mm)

Posted on Mar 24, 2010

  • 608 Answers

SOURCE: how to measure tappet clearance with dial gauge

When setting tappets, it has to be born inind that the valve stem wears an indentation into the face of the rocker. This prevents a really accurate tappet adjustment, so the customer is right again. If you do not posess a tappet setting dial gauge, a normal engineers dial gauge will do just as well. The procedure is the same as using your feeler gauge except that you set the dial gauge up on the cylinder head with the pointer resting on the head of the rocker. Press down fairly firmly on the rocker valve end and zero the gauge. Next lift up on the rocker and read off the clearance, from the gauge, Use a magnetic base to support your gauge and repeat the pocedure for each valve pair.

Posted on Mar 25, 2010

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Hey there I need the exhaust and Intake(valve) clearance for a komatsu 300-6 please


note Perform the valve clearance check and adjustment at the engine cold state. 1.Remove all of the ignition coils. 2.Remove the cylinder head cover.
caution Turn the crankshaft always clockwise. 3.Turn the crankshaft clockwise, and align the timing mark on the exhaust camshaft sprocket against the upper face of the cylinder head as shown in Figure. Therefore, No.1 cylinder goes to the compression top dead center. 4.Using a thickness gauge, measure the valve clearance with the arrow shown in Figure. If deviated from the standard value, make note for the valve clearance.
Standard value:

    Intake valve 0.20 ± 0.03 mm (0.008 ± 0.0012 inch)
    Exhaust valve 0.30 ± 0.03 mm (0.012 ± 0.0012 inch)
5.Turn the crankshaft clockwise 360 degrees, and put the timing mark on the exhaust camshaft sprocket in position shown in Figure. Therefore, No. 4 cylinder goes to the compression top dead center. 6.Check the valve clearance with the arrow shown in Figure. In the same procedure as 4.
7.If the valve clearance is deviated from the standard value, remove the camshaft and the valve tappet. For the camshaft removal, refer to Camshaft Removal and Installation . 8.Using a micrometer, measure the thickness of the removed valve tappet. 9.Calculate the thickness of the newly installed valve tappet through the following equation.
A: thickness of newly installed valve tappet
B: thickness of removed valve tappet
C: measured valve clearance
Equation

    Intake valve: A = B + [C - 0.20 mm (0.008 inch)]
    Exhaust valve: A = B + [C - 0.30 mm (0.012 inch)] note The valve tappet ranges 3,000 - 3,690 mm (0.1181 - 0.1453 inch) and has 47 types per 0.015 mm (0.0006 inch). The thickness below a decimal point is stamped on the reverse side of the valve tappet. 10.Install the valve tappet selected through the procedure 9, and put the camshaft in position. For the camshaft installation, refer to Camshaft Removal and Installation .
    11.After installing the timing chain, measure the valve clearance using the procedure 3 to 6. Confirm the clearance is within the standard value.
    caution Completely remove all the old FIPG, which might be remaining among the components. 12.After completely removing the liquid gasket adhering on the timing chain case, cylinder block and cylinder head, degrease them with white gasoline.
    caution The cylinder head cover should be installed within 3 minutes of applying liquid gasket.
13.Apply a 4 mm bead of liquid gasket as illustrated.
Specified sealant:
    THREE BOND 1217G or equivalent
14. Install the cylinder head cover and tighten the tightening bolts using the following procedures.
(1) Temporarily tighten to the following torque in order shown in the illustration.
Tightening torque: 3.0 ± 1.0 N·m (27 ± 8 in-lb)(2) Tighten to the specified torque in order shown in the illustration.
Specified torque: 5.5 ± 0.5 N·m (49 ± 4 in-lb)15.Install the ignition coils.

Jan 23, 2017 | Cars & Trucks

1 Answer

How do I fix the tapping sound from the engine when i accelerate after it has reached running temperature


Adjust the valve tappets (yes, they 'tap') AKA Rockers or find out why the hydraulic self adjusting tappets don't work?

They transfer the downward motion of the cams on the camshaft to depress the valves. There is a thin clearance of about 8 thousandths of an inch with the engine cold. As the engine heats the clearance reduces. Over tightening causes the valve edges to burn, too much clearance causes tapping.

Manual tappets get quieter usually as the engine heats. Hydraulic tappets gets worse as the engine heats as the oil thins.

Oct 03, 2015 | Cars & Trucks

1 Answer

Hi have a f22b3 1995exi was wondering if any one nows the specs on the tappet gaps .Also can u adjust them and advance the motor ?? Wanna put it in a motor carna


the valve timing on a motor is set and cannot be altered. The length of time that the valves are held open is determined by the lift of the cam and this period of time that the valves are held open determines how much mixture is allowed into the cylinder. If you advance the cam shaft you may gain extra mixture and a bit more power but on a single cam the exhaust valve timing is altered and so the advantage of the advance is lost. If you want more go from the motor get specially ground cam shafts ( hot cams) As to tappet clearance, if you have hydraulic lifters then they self adjust and thee is no clearance measurement. If you can adjust the tappets then most engines run .010" hot inlet and .012" exhaust hot Setting the tappets closer means that they open sooner but they also close sooner so the amount of mixture is reduced as the time for the mixture to enter the cylinder is reduced.

Oct 30, 2014 | Cars & Trucks

1 Answer

What is the tappets clearance for toyota hilux ln85 2wd?


8 12 check out TheAlexManVideos on youtube specifically

22RE Toyota Pickup/4Runner Valve Adjustment

Jun 17, 2014 | 1996 Toyota Hilux

1 Answer

Noisy tappets


just mere thousanths the patrs store has specs on valve clearances..I assume its an overhead cam ..you can sometimes adjust while its in idle..run the tappets out until that cylinder misses.. then adjust back enough for it to run smooth..

Dec 16, 2013 | 2008 Chevrolet Aveo 1.2

1 Answer

Mitsubishi Neptune 4g41 Manual


Hi, I need a 4G41 neptune manual too! (for a FG15 mitsubishi forklift. Haydn Cook, England, haydn.cook@virgin.net

Oct 28, 2013 | Cars & Trucks

2 Answers

I have problem with my engine 4K toyota. It heard an engine noise during idling, for my little knowledge in engine repair, can you give me any procedure mannuals in adjusting engine valves for my...


Valve Clearance Valve clearance is there to allow the valves to cool in between combustion events (spark), and to make sure the valve closes properly and contains the combustion explosion. You need to cool the valves a little bit, the exhaust valve moreso than the inlet, as it's what sees the most heat as spent burnt gases go past it into the exhaust port. Run too little clearance and you'll cause the valve to "weld" a little bit to its' seat every time it closes, and then take seat metal off again when it opens. Do this enough times and you burn out the valve seat and need the head reconditioned. However, by running less clearance, the valve stays open for that little but longer, and you get more air in and out of the motor, and make more power. Run too much clearance and your motor just sounds like a diesel and loses power and tappet rattle annoys you while you're driving, so it's better to err on the side of caution.
The stock valve clearance (0.008" inlet / 0.012" exhaust, warm) is pretty good for any of the cams I've listed above, they're well-sized street cams, not really wild top heavy race cams that require super high compression to work, so don't be afraid to close the valves up a bit from the suggestions of the cam grinder, which will usually say between 0.010" and 0.014". There are a few ways to set your valve clearances:
Yellow Book Method This is from the factory 3K/4K/5K engine manual, aka The Yellow Books. It's the quick and lazy method.
Set engine to #1 TDC. Crank pulley timing mark should be on 0, distributor rotor should be pointing towards spark plug 1 or 2. Set tappets (counting from the front) 1, 2, 3 and 5. Rotate engine 360 degrees, crank pulley to 0 again, distributor rotor turned 180 degrees. Set tappets 4, 6, 7 and 8.
Nine Method I've never really gotten into doing this, takes too much time and maths for my liking :P Rotate the engine through its' range of movement, as one valve is "on the rock" of its' max lift, subtract the valve number from 9 and that's the tappet you should be setting. For example, if #8 valve is open, set clearance on valve #1. If valve #7 is open, set clearance on #2. And so on.
Stewart uses this method, and rotates the camshaft through its entire base circle and sets the clearance at the highest point. Which is a pretty good idea, as it compensates for the possibility that the base circle has been ground unevenly, and allows you to run the proper valve clearance that you want to run, instead of something that may be a few thou larger in reality.

Feb 10, 2011 | Toyota Corolla Cars & Trucks

1 Answer

Has a bad tapping sound coming from the motor


your valve tappet clearance is too big. What you need to do is just to adjust the valve tappet clearance. It is a tedious job and require some basic skill to do it, if you are not sure, leave it to the service centre to do it.

Apr 20, 2010 | 1993 Honda Accord

1 Answer

How to measure tappet clearance with dial gauge


When setting tappets, it has to be born inind that the valve stem wears an indentation into the face of the rocker. This prevents a really accurate tappet adjustment, so the customer is right again. If you do not posess a tappet setting dial gauge, a normal engineers dial gauge will do just as well. The procedure is the same as using your feeler gauge except that you set the dial gauge up on the cylinder head with the pointer resting on the head of the rocker. Press down fairly firmly on the rocker valve end and zero the gauge. Next lift up on the rocker and read off the clearance, from the gauge, Use a magnetic base to support your gauge and repeat the pocedure for each valve pair.

Mar 25, 2010 | 1988 Mitsubishi Cargo

1 Answer

WHAT IS THE TAPPET CLEARANCE FOR NISSAN GA 15 CARBURATED,INTAKE AND EXHAUST?


what is the tappet clearance setting for the ga15 nissan sunny
i need help to know the clearance of intake and the exhaust valve.

Nov 02, 2009 | Nissan Sentra Cars & Trucks

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