Question about 1997 Lada Niva

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Hi i have a 1700cc lada 4x4 it has noisey tappets.would you no the valve clearance and also a quick guide how to do it.thanks

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We do not have LADA's in the USA, so we have no data on them, we are based in California, USA. Sorry

Posted on Feb 11, 2012

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  • Master
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There is a special set of tools for setting lash. but you can use point 2 and point 15 millimeter feeler gauges, although the better method is dial indicator calibrated in millimeters.

If you do not mind russian, the procedure is here:
http://www.niva-faq.msk.ru/tehnika/dvigatel/gbc/reg_klap.htm

A quick translation of relevent info because they also show how to set tensioners of the timing chain at the top:

At the bottom of that url page is a table for temperature corrections, the values mentioned are for 20 degrees C temperature of engine.

Cylinder one is at the front of the engine, and valves are numbered 1-8 from front as well.

Valves 2-3-6-7 are the exhaust valves and need to be adjusted to point 15 millimeter lash.

Valves 1-4-5-8 are the intake valves and are set to point 20 millimeter.

The cam lobe needs to be on the heel of the cam, but the instructions on the url indicate it can be done by starting with the egnine timig marks aligned as shown in the images. Initially 1-2-3-5 are adjusted Then the crankshaft is turned over one revolution so valves 4-6-7-8 can be adjusted- but double check to make sure none of the followers are on the ramps of the lobes. as my translation may not be completely accurate.

The torque for the locknut should be 101Newton/Meters to 125 newton /meters

Posted on Feb 11, 2012

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Toyota echo tappets are noisey


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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.

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1 Answer

Carburator and valve clearances


For the carb :
Idle r/min.- 1550+_50 r/min.
fuel level- 4.5+_5.0 mm
float height- 25.8+_1.0mm
pilot screw- 1-3/4 turns out
do you need jet #'s or not?

the "+_" signs are those plus-over-minus signs i cant do on my comp.

Valves:
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valve lift- in-5.5mm
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valve guide to valve stem clearance:
in-.010-.037mm
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valve guide I.D.: in & ex-5.5-5.512mm

valve stem O.D.:in-5.475-5.490mm
ex-5.455-5.470mm


Hope this helps.

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How to measure tappet clearance with dial gauge


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I have a 94' Isuzu rodeo with a fast tap


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Noisey tappets


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1 Answer

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

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The Exhaust 0.0018 to 0.0030 stem to guide clearance.

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