Question about 2002 Mazda Protege

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Valve adjustment shims for Mazda protege 2002 2.0 litter engine. Dual over head cams 16 valve. Was bored out .020 inches over? What size if it was over bored out?

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  • Mazda Master
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Three sizes of pistons are available:
1. Std.
2. Over size 0.010 in (0.25 mm).
3. Over size 0.020 in (0.50 mm).
Over sized pistons and rings are widely used in all automobiles with no trouble at all. They last for more than 200,000 km, provided if the engine oil, oil filter and air filters are replaced at the recommended intervals.
The most important point to consider here is to maintain the oil clearances between the various parts during the machining process.
For example piston to cylinder clearance, crankshaft to main journals and big ends clearance, valve to guide clearance, at room temperature. Then comes cleaning process and the engine assembling process.

Posted on Dec 28, 2013

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Posted on Jan 02, 2017

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SOURCE: 1992 mazda protege valve adjustment?

on 92 models they have no ajustment,they have automatic hydraulic lash adjustment.only time youll have problems is if oil level is low or camshaft is worned out!

Posted on Apr 15, 2009

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SOURCE: I need to see the diagram to identify the parts

mazda rx -7 taiming

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emissionwiz
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SOURCE: engine swap for mazda/head dropped a valve

yes it will

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SOURCE: oil leak in my 98 mazda protege

Could be a rear main seal.

Posted on Feb 01, 2010

alicantecoli
  • 22246 Answers

SOURCE: I need the timing marks

please forgive me but as iam getting older my memory isnt what it was but i seem to remember two slots in the back of the cam but it could be a mark on the rear cam cap,if not sure here then do it with no timing marks -- its easy make sure no1 piston is down halfway so valves clear pistons then look at the cams and start with the inlet no1 which should be just closed and the cam lobe moving away from the tappet ,and now the exhaust will be coming around to make contact with the tappet ,then look on the cam /cam caps keyway or whatever for anything resembling the timing marks .Sorry i just do so many makes of vehicle i cannot remember them all i just use my 6 yrs or motor vehicle technicians course ,although its all out of date now the basics are still the same and i apply this basic to any vehicle and it always works .right last question this one iam off to cultivate the garden and relay my irrigation pipes

Posted on Jun 05, 2011

Testimonial: "that is very helpful info I just want to thank you for your help I wasn't sure of the marks because it has intake and exhaust marks "

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How do I adjust the valves on a 2000 Mazda Protege DOHC? 1.6 engine.


http://workshop-manuals.com/mazda/protege_dx/l4-1.6l_dohc/maintenance/tune-up_and_engine_performance_checks/valve_clearance/system_information/specifications/page_666/ this shows how to do it but changing the shims is a job for a mechanic

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What is the adjustment of tapits in mazda b1600 gas


1586 cc engine is:

Valve side .012 inches (.30mm) on intake and exh
Cam side .009 inches (.22mm) on intake and exh

1272 cc engine is:

Valve side .010 inch (.25mm) intake ..012 (.30mm) exhaust
Cam side .007 inch (.18mm ) intake .009 (.22mm) exhaust

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Ok 1990 geo storm 1,6 litre dohc replaced water pump replaced 3 valves replaced head gaskets replaced timing belt car wont start any ideas?


90 Storm, must be in Canada, 1,6 (the comma tells me this)
the storm is a:
The car is really an Isuzu Impulse minus some of that car's more expensive features.
my guess is you drove the this 4EX1 engine until the cam belt slipped. yes> if yes you bent valves.????????????
so does compression exceed 150psi on all 4 cylinders now?
we use the cylinder leak down test in all DOHC .
if not , back to the drawing board.
if yes, the we check spark next, then try test fuel.
when did the engine last run , last week,month , year,?
who did your valves, a real machine shop or kid down the street.
a read shop pressure tests the head ,and warp checks it and
then makes sure the valves are ready for long service.
are the head bolts at 58 ft/lbs
did you use sealant on the 3 cap caps, per the FSM book.
if not , top end oiling will fail. and cams wrecked.

the 1.6l DOHC has no HLA's
the lash on valves must be checked, and this is corrected with SHIMS.

a pro machine shop does the for you,did they:?
when rebuilding engines, its best to read the factory service manual first. FSM so you know the special steps just for this engine.
ISUZU engine it is.



quote.
1.6L Twin Camshaft Engine
  1. Disconnect the negative battery cable.
  2. Remove the cylinder head or valve cover.
  3. Position the No. 1 cylinder at TDC on its compression stroke.
The notch on the crankshaft pulley should align with the 0 degrees mark on the timing gear case. Make sure the rocker arms on the No. 1 cylinder are loose and the rockers on the No. 4 cylinder are tight. If not, turn the crankshaft one complete revolution and align the marks again.
  1. Using a feeler gauge, measure the clearance between the cam lobe and the selective shim on the intake and exhaust valves on the No. 1 cylinder, then the intake valves on the No. 2 cylinder and the exhaust valves on the No. 3 cylinder. Note readings.
  2. Rotate the crankshaft 360 degrees. Using a feeler gauge, measure the clearance between the cam lobe and the selective shim on the intake and exhaust valves on the No. 4 cylinder, then the intake valves on the No. 3 cylinder and the exhaust valves on the No. 2 cylinder. Note readings.
  3. The valve clearance obtained on the exhaust valves should be between 0.008-0.012 in. (0.20-0.30mm). If not, replace the selective shim by turning the camshaft lobe downward and installing tool J-38413-2 or J-38413-3 (valve lash spring spacer) between the camshaft journal and the cam lobe next to the selective shim. Turn cam lobe upward and remove the selective shim. Install new shim using the selective shim chart.
The rear camshaft bearing caps must be removed to remove the selective shim.
  1. The valve clearance obtained on the intake valves should be between 0.004-0.008 in. (0.10-0.20mm). If not, replace the selective shim by turning the camshaft lobe downward and installing tool J-38413-2 or J-38413-3 between the camshaft journal and the cam lobe next to the selective shim. Turn cam lobe upward and remove the selective shim. Install new shim using the selective shim chart.
  2. When the adjustment is completed, install the cylinder head covers and connect the battery negative cable. Start the engine and check for leaks.
end fsm quote.

see those 2 marks, and crank must be at TDC. mark first.

26196190-t50uqibptsz0ry0el5zdiz1k-1-0.jpg

May 16, 2016 | Geo Cars & Trucks

2 Answers

Hi Ace 2L diesel van. What is the valve clearance warm and cold?


Cold: Intake 0.30mm, Exhaust 0.50mm.
Hot: Intake 0.20mm, Exhaust 0.040mm.

The 2L Toyota engine runs an overhead cam with bucket lifters, and requires removing and replacing of shims to adjust clearances...

Feb 13, 2016 | Toyota Cars & Trucks

1 Answer

Need valve adjustment on 2010 Mercury Mariner 2.5 dohc


There is no valve adjustment. If you have excessive clearance then you have a physical problem with your engine. With an overhead cam, like the name suggests, the cam shaft is positioned over the valve. The lobes of the cam shaft push down on a puck that is between it and the valve stem. Although these pucks are shim-able, they should not have to be re-shimmed after the initial assembly.

Jun 09, 2015 | Mercury Cars & Trucks

1 Answer

How to aliane marks on cam shaft pulley on mazda protege 2002


1. Remove all spark plugs so that the crank shaft could be rotated easily.
2. Rotate the crankshaft to align the timing mark of the crankshaft gear with the index mark on the engine cover.
3.Rotate the crankshaft +/- 30 degrees to ensure that the valve could not hit the pistons when aligning the camshaft gears.
4. Align the camshafts as described below.
5. Align the crankshaft timing gear with the index mark.
6. Loose and lock the timing bearing at its farther position. Install a timing belt starting from the crankshaft gear, then right cam, then left cam, and at last the timing bearing.
7. Press and hold the timing belt to keep it firm on the gears and loosen the timing bearing. It will get adjusted by itself with the help of spring attached to it. Do not put extra force on the bearing to adjust it more.
8. Confirm the timing marks.
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Apr 22, 2015 | 2002 Mazda Protege

1 Answer

Cam bearings


Remove the rocker cover to ascertain the damage done . It may not be bearings but seized valve in the head. To fix cam bearings properly it may necessitate the head removal and machining both the head surface and then the bearings should be line bored to realign the cam shaft correctly. Some Nissan products have the cam bearing housings adjustable with shims to align the holes correctly and if not done will break the cam shaft. IT may be the cam shaft is broken and jammed . What ever it will not be just a case of putting in new bearings until you have the head and bearing alignment checked out by an engineering shop.

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1 Answer

Valve clearence settings mazda protege 2003


This is for a non turbo2_24_2012_5_45_49_am.gifNew adjustment shim =Removed shim thickness+ measured valve clearance- STANDARD VALVE CLEARANCE (0.26 mm or 0.010 inch)

Feb 24, 2012 | Mazda Protege Cars & Trucks

1 Answer

1992 mazda protege valve adjustment?


on 92 models they have no ajustment,they have automatic hydraulic lash adjustment.only time youll have problems is if oil level is low or camshaft is worned out!

Apr 15, 2009 | 1992 Mazda Protege

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