Stock manifolds question..
Stock manifolds question.. I'd would rather hear this from people that have personal experience with this, so please, no speculation - unless you know someone that did this. 
Track day (drag racing) is getting near, but I still have to fabricate a Y-pipe. So, yesterday I was thinking, "how about I just run it with the manifolds on?"
Which leads me to my question - If I just run the manifolds without cats, would that affect my motor in any way? If so, in which way? and does it sound like crap (sounds clips would be awesome)?
Track day (drag racing) is getting near, but I still have to fabricate a Y-pipe. So, yesterday I was thinking, "how about I just run it with the manifolds on?"
Which leads me to my question - If I just run the manifolds without cats, would that affect my motor in any way? If so, in which way? and does it sound like crap (sounds clips would be awesome)?
Originally Posted by RrCoX22
by mainfolds i hope your meaning longtubes....
otherwise if your talking about the stockers or shorties your in a dream and need to wake up
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Joined: Jun 2005
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From: England
A long tube header is an exhaust manifold. Essentially you have stock exhaust manifolds, shorty, mid length and Long tube (LT's) headers. They all have different length primaries.
What type of headers are you running?
What type of headers are you running?
Originally Posted by 300bhp/ton
A long tube header is an exhaust manifold. Essentially you have stock exhaust manifolds, shorty, mid length and Long tube (LT's) headers. They all have different length primaries.
What type of headers are you running?
What type of headers are you running?
Originally Posted by HeapaShifter
You can't do it with just stock manifolds because one of the o2 sensors is on the y-pipe.
I guess my real question is, Would it harm the engine if I ran it this way and if i will harm it, how?
thanks.
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Joined: Jun 2005
Posts: 2,660
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From: England
Why mids? Lt's are the answer, not for flow but scavenging. And yes you can run open headers, but you can also run duals (better sound and more tolerable db level) with no loss of flow or power. Check the sticky out in this forum on induction/exhaust mods. Read posts 6 and then 13 onwards, it should explain all you'll ever need to kow about headers and exhaust design.
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Originally Posted by RrCoX22
do not run open shorties... you will potentially **** up your engine as the primaries are WAY too short 
well the responses to this question have been all over the place
let me get this straight.. you want to run exhaust manifolds only? if thats the case id say its a bad idea. if you gut the cats and then put the manifolds and the gutted cats on there it would probably be alright.
let me get this straight.. you want to run exhaust manifolds only? if thats the case id say its a bad idea. if you gut the cats and then put the manifolds and the gutted cats on there it would probably be alright.
Originally Posted by rastarajah
cool, thanks guys. for now, I think i'll only be running stock manifolds and fabbing up some true duals with dumps 
but why not go LT's?
Originally Posted by RrCoX22
but why not go LT's?
Originally Posted by RrCoX22
there you go... now your thinking
but why not go LT's?
but why not go LT's?
Last edited by rastarajah; Sep 19, 2006 at 10:45 PM.