Measuring Cylinder Head Height
04-12-2005, 08:45 AM
#1
Honda-Tech Member
Thread Starter
Measuring Cylinder Head Height
The FSM gives a new cylinder head height range to a couple thou. I'm wondering where I make this measurement at! (obviously one side will be the deck surface) Doesn't say where to measure it. This is to determine how much a head has been decked.
B18C new height is 5.589" - 5.593"
Its not from the deck to the valve cover mating surface. Thats about an inch taller than the specs. Any ideas?
B18C new height is 5.589" - 5.593"
Its not from the deck to the valve cover mating surface. Thats about an inch taller than the specs. Any ideas?
04-12-2005, 08:50 AM
#2
Junior Member
Re: Measuring Cylinder Head Height (legendboy)
crank centerline I believe, double check though
Edit, per http://www.lcengineering.com/T...8.htm
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote"> Proper Deck Heights – Blocks & Heads
Whenever you go through an engine or cylinder head re-build, there will be some amount of "re-surfacing" that has to be performed to either the block or the head. Most frequently, it's the cylinder head. This is also known as "decking."
For machining purposes, deck height on an engine block is the measured distance between the "Center Line of the Main Journal" to the "Deck Surface". This can only be performed with the engine block disassembled and the crankshaft removed. </TD></TR></TABLE>
Edit once again, sorry, I misread your whole post....
Edit, per http://www.lcengineering.com/T...8.htm
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote"> Proper Deck Heights – Blocks & Heads
Whenever you go through an engine or cylinder head re-build, there will be some amount of "re-surfacing" that has to be performed to either the block or the head. Most frequently, it's the cylinder head. This is also known as "decking."
For machining purposes, deck height on an engine block is the measured distance between the "Center Line of the Main Journal" to the "Deck Surface". This can only be performed with the engine block disassembled and the crankshaft removed. </TD></TR></TABLE>
Edit once again, sorry, I misread your whole post....
04-12-2005, 09:09 AM
#3
Honda-Tech Member
Thread Starter
Re: Measuring Cylinder Head Height (dennis)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dennis »</TD></TR><TR><TD CLASS="quote">crank centerline I believe, double check though
Edit, per http://www.lcengineering.com/T...8.htm
Edit once again, sorry, I misread your whole post....</TD></TR></TABLE>
good link, i googled for about an hour last night and couldn't find a thing!
so can anybody confirm the "Cylinder Head Height" measurement on a honda as being taken from the bottom of the cam shaft journal to the bottom of the deck?
Edit, per http://www.lcengineering.com/T...8.htm
Edit once again, sorry, I misread your whole post....</TD></TR></TABLE>
good link, i googled for about an hour last night and couldn't find a thing!
so can anybody confirm the "Cylinder Head Height" measurement on a honda as being taken from the bottom of the cam shaft journal to the bottom of the deck?
04-12-2005, 10:36 AM
#5
Junior Member
Re: Measuring Cylinder Head Height (legendboy)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by legendboy »</TD></TR><TR><TD CLASS="quote">mmm i got the answer, its measured up to cam cap mating surface. </TD></TR></TABLE>
Is that equal to the cam centerline?
Is that equal to the cam centerline?
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