Engine rebuild part 7: Valve lifter adjustment after valve job
The valve job I did earlier changed the valve clearance a tiny bit as it will position the valve further into the seat. The MZR uses bucket between the valve and the cam that acts like a shim. They are numbered with 3 digits which is actually the three decimals of 3.xxx mm.
The gap should be
IN: 0.22-0.28 mm {0.0087-0.0110 in}
EX: 0.27-0.33 mm {0.0106-0.0130 in}
The process is pretty straight forward as described in the FSM
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I was already on the low side after installing a 2.0 intake cam and was off on 3 buckets and very close on several others.
I had to put everything in a google sheet as I ended up juggling 32 buckets including 16 left over after my 1.8 engine.
The new values colored green,blue and red was found using the formula described in the FSM:
New shim= Removed shim thickness + Measured valve clearance - Standard valve clearance (IN: 0.25 mm {0.0098 in}, EX: 0.30 mm {0.0118 in})
<table border="1" cellpadding="0" cellspacing="0" dir="ltr" style="border-collapse: collapse; border: 1px solid #ccc; font-family: arial,sans,sans-serif; font-size: 13px; table-layout: fixed;"><colgroup><col width="100"><col width="100"><col width="100"><col width="100"><col width="100"><col width="100"><col width="100"><col width="100"><col width="100"></colgroup><tbody><tr style="height: 21px;"><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td data-sheets-value="{"1":2,"2":"STD Intake clr"}" style="padding: 2px 3px 2px 3px; vertical-align: bottom;">STD Intake clr</td><td data-sheets-value="{"1":3,"3":0.25}" style="background-color: yellow; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.25</td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td></tr><tr style="height: 21px;"><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td data-sheets-value="{"1":2,"2":"STD Exh clr"}" style="padding: 2px 3px 2px 3px; vertical-align: bottom;">STD Exh clr</td><td data-sheets-value="{"1":3,"3":0.3}" style="background-color: yellow; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.3</td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td></tr><tr style="height: 21px;"><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td></tr><tr style="height: 21px;"><td data-sheets-value="{"1":2,"2":"Intake\n"}" style="font-weight: bold; padding: 2px 3px 2px 3px; vertical-align: bottom;">Intake</td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td></tr><tr style="height: 21px;"><td data-sheets-value="{"1":2,"2":"Cyl #"}" style="font-weight: bold; padding: 2px 3px 2px 3px; vertical-align: bottom;">Cyl #</td><td data-sheets-value="{"1":3,"3":1}" style="font-weight: bold; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">1</td><td data-sheets-value="{"1":3,"3":2}" style="font-weight: bold; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">2</td><td data-sheets-value="{"1":3,"3":3}" style="font-weight: bold; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3</td><td data-sheets-value="{"1":3,"3":4}" style="font-weight: bold; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">4</td><td data-sheets-value="{"1":3,"3":5}" style="font-weight: bold; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">5</td><td data-sheets-value="{"1":3,"3":6}" style="font-weight: bold; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">6</td><td data-sheets-value="{"1":3,"3":7}" style="font-weight: bold; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">7</td><td data-sheets-value="{"1":3,"3":8}" style="font-weight: bold; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">8</td></tr><tr style="height: 21px;"><td data-sheets-value="{"1":2,"2":"clearence"}" style="padding: 2px 3px 2px 3px; vertical-align: bottom;">clearance</td><td data-sheets-value="{"1":3,"3":0.25}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.25</td><td data-sheets-value="{"1":3,"3":0.23}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.23</td><td data-sheets-value="{"1":3,"3":0.21}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.21</td><td data-sheets-value="{"1":3,"3":0.23}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.23</td><td data-sheets-value="{"1":3,"3":0.23}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.23</td><td data-sheets-value="{"1":3,"3":0.21}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.21</td><td data-sheets-value="{"1":3,"3":0.23}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.23</td><td data-sheets-value="{"1":3,"3":0.23}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.23</td></tr><tr style="height: 21px;"><td data-sheets-value="{"1":2,"2":"Shim"}" style="padding: 2px 3px 2px 3px; vertical-align: bottom;">Shim</td><td data-sheets-value="{"1":3,"3":3.282}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.282</td><td data-sheets-value="{"1":3,"3":3.322}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.322</td><td data-sheets-value="{"1":3,"3":3.302}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.302</td><td data-sheets-value="{"1":3,"3":3.302}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.302</td><td data-sheets-value="{"1":3,"3":3.302}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.302</td><td data-sheets-value="{"1":3,"3":3.302}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.302</td><td data-sheets-value="{"1":3,"3":3.262}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.262</td><td data-sheets-value="{"1":3,"3":3.262}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.262</td></tr><tr style="height: 21px;"><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-7]C[3]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.282}" style="background-color: lime; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.282</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-7]C[2]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.302}" style="background-color: cyan; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.302</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-7]C[1]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.262}" style="background-color: red; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.262</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-7]C[0]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.282}" style="background-color: cyan; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.282</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-7]C[-1]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.282}" style="background-color: cyan; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.282</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-7]C[-2]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.262}" style="background-color: red; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.262</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-7]C[-3]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.242}" style="background-color: cyan; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.242</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-7]C[-4]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.242}" style="background-color: cyan; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.242</td></tr><tr style="height: 21px;"><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td></tr><tr style="height: 21px;"><td data-sheets-value="{"1":2,"2":"Exhaust"}" style="font-weight: bold; padding: 2px 3px 2px 3px; vertical-align: bottom;">Exhaust</td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td></tr><tr style="height: 21px;"><td data-sheets-value="{"1":2,"2":"clearence"}" style="padding: 2px 3px 2px 3px; vertical-align: bottom;">clearance</td><td data-sheets-value="{"1":3,"3":0.35}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.35</td><td data-sheets-value="{"1":3,"3":0.3}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.3</td><td data-sheets-value="{"1":3,"3":0.3}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.3</td><td data-sheets-value="{"1":3,"3":0.3}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.3</td><td data-sheets-value="{"1":3,"3":0.3}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.3</td><td data-sheets-value="{"1":3,"3":0.3}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.3</td><td data-sheets-value="{"1":3,"3":0.3}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.3</td><td data-sheets-value="{"1":3,"3":0.3}" style="padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">0.3</td></tr><tr style="height: 21px;"><td data-sheets-value="{"1":2,"2":"shim"}" style="padding: 2px 3px 2px 3px; vertical-align: bottom;">shim</td><td data-sheets-value="{"1":3,"3":3.282}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.282</td><td data-sheets-value="{"1":3,"3":3.382}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.382</td><td data-sheets-value="{"1":3,"3":3.342}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.342</td><td data-sheets-value="{"1":3,"3":3.382}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.382</td><td data-sheets-value="{"1":3,"3":3.382}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.382</td><td data-sheets-value="{"1":3,"3":3.362}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.362</td><td data-sheets-value="{"1":3,"3":3.362}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.362</td><td data-sheets-value="{"1":3,"3":3.422}" style="border-bottom: 1px solid #000000; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.422</td></tr><tr style="height: 21px;"><td style="padding: 2px 3px 2px 3px; vertical-align: bottom;"></td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-11]C[3]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.3320000000000003}" style="background-color: red; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.332</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-11]C[2]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.382}" style="background-color: lime; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.382</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-11]C[1]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.342}" style="background-color: lime; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.342</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-11]C[0]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.382}" style="background-color: lime; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.382</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-11]C[-1]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.382}" style="background-color: lime; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.382</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-11]C[-2]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.362}" style="background-color: lime; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.362</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-11]C[-3]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.362}" style="background-color: lime; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.362</td><td data-sheets-formula="=R[-1]C[0]+R[-2]C[0]-R[-11]C[-4]" data-sheets-numberformat="[null,0]" data-sheets-value="{"1":3,"3":3.422}" style="background-color: lime; padding: 2px 3px 2px 3px; text-align: right; vertical-align: bottom;">3.422</td></tr></tbody></table>
<div>I only need 3 new shims after swapping buckets all over the place.</div><div>
</div><div>The part numbers for the buckets are listed as one partnumber (1F2012300B ) on www.onlinemazdaparts.com but there is actually one partnumber per size as described here under 12966 “DISC,ADJUSTING”</div><div>
</div><div>Just out of curiosity I checked the part numbers for the valve springs and intake cam on the L5, NC1 and NC2 engines since NC2 supposedly has springs that can take more RPM:</div><div>
</div><div><table border="1" cellpadding="0" cellspacing="0" dir="ltr" style="border-collapse: collapse; border: 1px solid #ccc; font-family: arial,sans,sans-serif; font-size: 13px; table-layout: fixed;"><colgroup><col width="100"><col width="100"><col width="100"></colgroup><tbody><tr style="height: 21px;"><td data-sheets-value="{"1":2,"2":"Engine"}" style="font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">Engine</td><td data-sheets-value="{"1":2,"2":"Valve spring"}" style="font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">Valve spring</td><td data-sheets-value="{"1":2,"2":"Intake cam"}" style="font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">Intake cam</td></tr><tr style="height: 21px;"><td data-sheets-value="{"1":2,"2":"L5VE (2.5L)"}" style="font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">L5VE (2.5L)</td><td data-sheets-value="{"1":2,"2":"LF5012125A"}" style="background-color: white; font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">LF5012125A</td><td data-sheets-value="{"1":2,"2":"L3G212420A"}" style="background-color: white; font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">L3G212420A</td></tr><tr style="height: 21px;"><td data-sheets-value="{"1":2,"2":"NC1 (2.0)"}" style="font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">NC1 (2.0)</td><td data-sheets-value="{"1":2,"2":"LF5012125A"}" style="background-color: white; font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">LF5012125A</td><td data-sheets-value="{"1":2,"2":"L3E312420"}" style="background-color: white; font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">L3E312420</td></tr><tr style="height: 21px;"><td data-sheets-value="{"1":2,"2":"NC2 (2.0)"}" style="font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">NC2 (2.0)</td><td data-sheets-value="{"1":2,"2":"LF9G12125A"}" style="background-color: white; font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">LF9G12125A</td><td data-sheets-value="{"1":2,"2":"L3E312420"}" style="background-color: white; font-family: Arial; font-size: 100%; padding: 2px 3px; vertical-align: bottom;">L3E312420</td></tr></tbody></table></div><div>
</div>So, if you want to rev the L5 or NC1 past 7K the springs from a NC2 will be a cheap upgrade.
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