What effect does the cam have on emmissions?
02-15-2003, 01:13 PM
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What effect does the cam have on emmissions? And I'm not talking about the sniffer... because I found out today that all they do here in NC is a visual check for the cats and plug your computer into a diagnostic machine which checks for codes.
Does a big cam (eg- 230/230 on a 110lsa) throw a code because the O2 sensors go nuts? If the state doesn't car about raw gas pouring out my tailpipe, I want to find out if the car's computer does <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Does a big cam (eg- 230/230 on a 110lsa) throw a code because the O2 sensors go nuts? If the state doesn't car about raw gas pouring out my tailpipe, I want to find out if the car's computer does <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
02-15-2003, 03:00 PM
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Re: What effect does the cam have on emmissions? A 230/230 on a 110 LSA is going to have a lot of overlap. This can do two things:
1) At idle (which would be interesting on a stock-cubed motor with this cam), the large overlap is going to cause a good chunk of diluted charge to go out the tail pipe. This will give you a nice rich smell and cause you to fail a sniffer test. But you aren't taking a sniffer test.
2) You will get misfire codes set without programing.
Any comments anyone else?
Greg
1) At idle (which would be interesting on a stock-cubed motor with this cam), the large overlap is going to cause a good chunk of diluted charge to go out the tail pipe. This will give you a nice rich smell and cause you to fail a sniffer test. But you aren't taking a sniffer test.
2) You will get misfire codes set without programing.
Any comments anyone else?
Greg
02-15-2003, 03:26 PM
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Re: What effect does the cam have on emmissions? Well, before we all start debating the effects of a 230/230-110 in a stock engine, let me explain that those #'s were just something I pulled out of my *** as an example. I guess what I'm asking is if I should continue to only look at cams smaller then 224 and 114 that are known to barely pass the sniffer (B1, etc.), or if I can now think about larger cams because it still won't set off a code.
02-15-2003, 08:19 PM
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Re: What effect does the cam have on emmissions? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by ClassicCollector:
<strong> If you get tunning and take care of all those misfire codes cause by any size cam, you will be fine. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">And what type of tunning will I require? Is it anything that O2 sims couldn't cure? Do you get these codes with a TR224 on a 114 cam and people just "tune them out"? Thanks <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<strong> If you get tunning and take care of all those misfire codes cause by any size cam, you will be fine. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">And what type of tunning will I require? Is it anything that O2 sims couldn't cure? Do you get these codes with a TR224 on a 114 cam and people just "tune them out"? Thanks <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />