Cams - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

gwong · 03-01-2002, 09:50 PM

I had my cams out for a while, and now that I'm putting them back in, I realize I have them mixed up!  In appearance, they both look the same.  How do I tell which is for the intake and which for the exhaust?

240meowth · 03-01-2002, 09:54 PM

i don't have a clue, but switch 'em, which ever combo gives you more hp, use that :biggrin:

misnomer · 03-02-2002, 02:56 AM

This is a wild guess, could be wrong, but. . .

Couldn't you just put them in and see what lines up where?

burnsmonkey · 03-02-2002, 08:27 AM

Im pretty sure the one with a blue mark is intake and the one with an orange mark is exhaust. Unlike Hondas i didnt see an EX or IN on the cams when i took my valve cover off.

*sykikchimp* · 03-02-2002, 09:51 AM

green = intake
orange = exhaust

*sykikchimp* · 03-02-2002, 09:53 AM

btw..  while your in there REMOVE THE CHAIN GUIDE.

DrDubbleB · 03-02-2002, 11:34 AM

Out of curiosity, why remove the chain guide?

*sykikchimp* · 03-02-2002, 03:05 PM

It (among other things) can get worn down, and break off under there. *It also causes some rattling under the chain cover. *There is a lower cahin guide (on the Upper chain) that causes this also, and can be removed. *But its harder to get too.

(Edited by sykikchimp at 7<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>3 pm on Mar. 2, 2002)

gwong · 03-02-2002, 07:25 PM

thanks for the info.  BTW, what position are the lobes for the first cylinder supposed to be at in TDC?  Just wanna make sure I didn't screw up before I slapped everything else back on.

BadMoJo · 03-02-2002, 08:05 PM

are there any ill effects of removing the chain guide? Just wondering if it would be more likely to hop off the teeth or something, seeing as how it is the "chain guide". <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

gwong · 03-02-2002, 09:46 PM

I don't see any problems with removing the upper guide.  There really isn't much reason for it to be there.  However, the side one is questionable because it may keep the chain from sloshing around inside the upper cover.

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03-01-2002, 09:50 PM	#1
gwong Leaky Injector Join Date: Dec 2001 Location: st. louis Posts: 69 Trader Rating: (0)	I had my cams out for a while, and now that I'm putting them back in, I realize I have them mixed up!  In appearance, they both look the same.  How do I tell which is for the intake and which for the exhaust?

03-01-2002, 09:54 PM	#2
240meowth Nissanaholic! Join Date: Dec 2001 Location: torrance, ca Age: 26 Posts: 2,289 Trader Rating: (3)	i don't have a clue, but switch 'em, which ever combo gives you more hp, use that :biggrin:

03-02-2002, 02:56 AM	#3
misnomer Nissanaholic! Join Date: Jul 2001 Location: Nevada Posts: 2,294 Trader Rating: (0)	This is a wild guess, could be wrong, but. . . Couldn't you just put them in and see what lines up where?

03-02-2002, 08:27 AM	#4
burnsmonkey Zilvia Member Join Date: Feb 2002 Posts: 208 Trader Rating: (0)	Im pretty sure the one with a blue mark is intake and the one with an orange mark is exhaust. Unlike Hondas i didnt see an EX or IN on the cams when i took my valve cover off.

03-02-2002, 09:51 AM	#5
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 29 Posts: 6,519 Trader Rating: (0)	green = intake orange = exhaust

03-02-2002, 09:53 AM	#6
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 29 Posts: 6,519 Trader Rating: (0)	btw..  while your in there REMOVE THE CHAIN GUIDE.

03-02-2002, 11:34 AM	#7
DrDubbleB Zilvia FREAK! Join Date: Feb 2002 Posts: 1,119 Trader Rating: (0)	Out of curiosity, why remove the chain guide?

03-02-2002, 03:05 PM	#8
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 29 Posts: 6,519 Trader Rating: (0)	It (among other things) can get worn down, and break off under there. It also causes some rattling under the chain cover. There is a lower cahin guide (on the Upper chain) that causes this also, and can be removed. *But its harder to get too. (Edited by sykikchimp at 7<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>3 pm on Mar. 2, 2002)

03-02-2002, 07:25 PM	#9
gwong Leaky Injector Join Date: Dec 2001 Location: st. louis Posts: 69 Trader Rating: (0)	thanks for the info.  BTW, what position are the lobes for the first cylinder supposed to be at in TDC?  Just wanna make sure I didn't screw up before I slapped everything else back on.

03-02-2002, 08:05 PM	#10
BadMoJo Nissanaholic! Join Date: Sep 2001 Location: San Luis Obispo, Ca Age: 28 Posts: 1,933 Trader Rating: (0)	are there any ill effects of removing the chain guide? Just wondering if it would be more likely to hop off the teeth or something, seeing as how it is the "chain guide". <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

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03-02-2002, 09:46 PM	#11
gwong Leaky Injector Join Date: Dec 2001 Location: st. louis Posts: 69 Trader Rating: (0)	I don't see any problems with removing the upper guide.  There really isn't much reason for it to be there.  However, the side one is questionable because it may keep the chain from sloshing around inside the upper cover.