Quickin

This is what my ARE 436 has in it, which I should be picking up on Tuesday. Yippie!

But, can someone explain what it all means in as much detail as possible? What internal parts are associated with each number.

Thanks

<small>[ November 22, 2002, 05:18 PM: Message edited by: Quickin ]</small>

VINCE

iTrader: (1)

Nice machine..

Quickin

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by VINCE:
<strong>Nice machine..</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks man, it's been a long time coming. But I did things a bit backwards as far as the real technical knowledge, so i'd like to learn about all these numbers and stuff.

oOoLy

Thats killer........good engine... <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

hondakiller

iTrader: (3)

242 is the duration of the cam aka the length of time in degrees of crankshaft rotation that the valves are open. .610 is the distance the valves open in thousands of an inch. 114 lsa is the lobe separation angle. time in degrees of camshaft rotation that both valves are open at the same time. higher lsa is better for idle and emissions but makes the power peak higher. with the opposite being true for lower lsa. thats all i know pretty much. im not quite sure about the rotation part though, whether its cam or crank rotation. im sure someone will clear it up though. good luck with the new motor.

restoman45

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">higher lsa is better for idle and emissions but makes the power peak higher. with the opposite being true for lower lsa. </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">um....i thought that just the opposite was true...a tighter lsa(112 for example) will have more peak power and worse emissions, and a higher lsa like 116 will have more low end power and better emmissions...

Colonel

"114 lsa is the lobe separation angle. time in degrees of camshaft rotation that both valves are open at the same time."

Incorrect. It's the distance (in degrees) between the center of the exhaust lobe and the center of the intake lobe.

...And I'm not about to get into the whole what a tighter or wider LSA means debate. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

horist

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by restoman45:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">higher lsa is better for idle and emissions but makes the power peak higher. with the opposite being true for lower lsa. </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">um....i thought that just the opposite was true...a tighter lsa(112 for example) will have more peak power and worse emissions, and a higher lsa like 116 will have more low end power and better emmissions...</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">There was a post about this a few months ago which debated the issue... i'm still confused from that post <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

Seemed like 1/2 were saying one thing and 1/2 were saying other.... I just know that a lower LSA makes the car sound lopier (is that a word? ) <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Quickin

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by horist:
I just know that a lower LSA makes the car sound lopier (is that a word? ) <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> [/QB]</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">It is now.