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Petter engine tappet clearance

It is a petter a1 petrol engine we would like to know the valve or tappet clearances

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.010" hot inlet and .012" exhaust hot. if it is an air cooled engine go up.002" in settings.

Posted on Dec 06, 2014

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Posted on Jan 02, 2017

cfsnook
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SOURCE: torque settingsfor head on lister petter mini6 engine

I have just rebuilt one for our Westerly 21. This is from my Petter 'A' range workshop manual:-
The water cooled engines (AC1W etc.) are:cylinder head nuts: 30NM (22 lbft) except 32.5NM (24 lbft) for the one that also holds the rocker.
Valve clearances are 0.1mm (0.004") COLDReset valve clearance after one hours running since torquing the head.
Retorque head and set valve clearance after initial 20 hours running
I believe Mini-6 refers to the water cooled engines but just in case, the air cooled engines are 27N (20 lbft)

Posted on Apr 17, 2012

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Valve clearance and voltage regulator pin out +,-, Stator, Service Manual PDF download


petrol tappet clearance on petrol engines run around .010" hot inlet and .012" hot exhaust ( .009" and .011" would be minimum )
setting to no clearance will hold both valves off the seats and make starting and running difficult
as to splicing wires , you will need a chematics to get it correct
generally the practice is red is active and black is neutral with green as ground /earth
go google and type in wiring schematics for ( make and model of unit ) and see if there is a pdf version to down load

Aug 17, 2016 | 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

Mazda 6.2 engine valve clearance


tappet clearance for this engine i wouldnt know offhand but 12 inlet and 14 exhaust will suffice without doing any damage and 25th for the plugs

Apr 15, 2012 | Mazda Cars & Trucks

1 Answer

Torque settingsfor head on lister petter mini6 engine


I have just rebuilt one for our Westerly 21. This is from my Petter 'A' range workshop manual:-
The water cooled engines (AC1W etc.) are:cylinder head nuts: 30NM (22 lbft) except 32.5NM (24 lbft) for the one that also holds the rocker.
Valve clearances are 0.1mm (0.004") COLDReset valve clearance after one hours running since torquing the head.
Retorque head and set valve clearance after initial 20 hours running
I believe Mini-6 refers to the water cooled engines but just in case, the air cooled engines are 27N (20 lbft)

Mar 27, 2012 | 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

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

A fairly consistent tapping noise from the top of the engine between 50 - 70 mph. After 70-75 mph in seems to quiet down.


sounds like a lifter is bleeding out or starving for oil at low revs
check oil level and oil pressure
if thats good lifter or tappet clearance next to check
is engine seviced regularly?
slugde build up can cause problems also
if V6 petrol see a lot of worn valve guides causing noise worse when warm and noise comes in and out at 1200RPM
tappet clearance issue noise would be there all the time
lifter can also come and go while holding revs up

Jun 27, 2009 | 1999 Isuzu Rodeo

1 Answer

Tappet settings for isuzu trooper 1996


For the 3.1 diesel its 0.016" cold .
petrol is
Valve Clearance Standard Value (cold)
Intake: 0.23 mm–0.33 mm
(0.0091 in–0.0130 in)
Exhaust: 0.25 mm–0.35 mm
(0.0098 in–0.0138 in

Apr 25, 2009 | 1996 Isuzu Trooper

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

Nov 18, 2008 | 1986 Suzuki Samurai

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