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Author Topic:   exhaust set up
yenko
Member
posted March 09, 2003 03:13 PM
Half mile track.406,1 5\8x3in headers
what is the best exhaust set up? do you guys run the x pipes?? or straight pipes


outlawstock17
Member
posted March 09, 2003 04:57 PM
x-pipe, 3 1/2" pipe, schoenfeld shory mufflers. you will like it!


66jj
Member
posted March 09, 2003 08:07 PM
i like stepped headers, small exhaust 2.5 x or cross over, located where temperature in pipes drops, and lobackor moroso spiral flo mufflers, 6 lbs each. run at least 12 inches of pipe after the mufflers.

small exh builds back pressure which pre heats cylinders for complete combustion and helps torque.

but then again my car was allways the quitest at most tracks.

fastest too!! still have 2 track records unbroken from 2001 and 2000 at diff tracks.

i love exhaust on my competitors cars like the post above cus i can sneak up on those guys all they can hear is their own car. lol

jj

outlawstock17
Member
posted March 10, 2003 07:01 AM
66jj, we run outlaw engines. roller cams, long rods, stroker cranks, ported and polished aftermarket heads, alcohol, the whole enchilada. 2 1/2" exhaust pipes will choke a big inch, high horsepower engine.

i want the other guys to hear me comin'. intimidation factor.....noise moves guys over!

66jj
Member
posted March 10, 2003 05:44 PM
maybe thats more than the little 14-1 383 and 406 dart headed, victor junior intaked motors i have been running.

worked great for me, like i said i like you guys with those loud cars.

jj

odb93
Member
posted March 10, 2003 09:07 PM
no, you need some backpressure. thats what the header collectors and "X" pipe do. no backpressure is a torque killer. all headers with collectors will generate some backpressure.

it's more effort to fabricate an exhaust system like this and it's always in the way of things, but it will make more power and you can feel it. try it, you won't go back. it sounds all NASCAR-ish too!

[This message has been edited by outlawstock17 (edited March 11, 2003).]

sjakes8
Member
posted March 11, 2003 02:59 PM
i would leave the "Y" pipe. it's function is the same as the "X" pipe....better scavenging. in a restricted hobby type engine, the single muffler won't hurt you like it would in a full boogie engine. i would use a big muffler though. two 2 1/2" pipes going into the "Y" and one 3 1/2" coming out going into a single 3 1/2" muffler 12" downstream of the "Y" , then a turndown.


rickb33
Member
posted March 11, 2003 11:45 PM
i've made every one that i've ever used. buy 2 90 degree mandrel bends from a truck supply and cut an oval shaped hole in each one at the bend and weld them together. you'll need 4 45 degree bends or 2 more 90's cut in half to make the transition back to straight. dr. gas sells them but they're proud of them.


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