'74 Exhaust question??
#11
RE: '74 Exhaust question??
True dual exhaust, IMO, doesn't need the "H" or "X" cross over pipes.
I don't know of any advantage to using them. [sm=insomnia.gif]
There must be some reason.
I like the true dual exhaust, 'cause I can listen to, and see, what's goin' on with each bank of the engine.
I don't know of any advantage to using them. [sm=insomnia.gif]
There must be some reason.
I like the true dual exhaust, 'cause I can listen to, and see, what's goin' on with each bank of the engine.
#12
RE: '74 Exhaust question??
It's a pressure thing. The X or H pipe helps to even out the back pressure. I noticed a change on my truck when I redid it with identical runs. If the pipes are bent in identical runs and constructed of the right size pipe,(not too small, not too big), than I can't see any reason to having either. I think they are more useful on systems with asemetrical bends,like on a 4x4, etc., where the pipes have to be routed differently.The vette allows for semetrical runs under or along side the car so like I said I don't see any reason for them,......but I'm no expert. Maybe you could PM Mech259, I would value his opinion. Too bad Lee Willis is nolonger a member, he would have an answer as well. Cheers
#14
RE: '74 Exhaust question??
I haven't had any vehicle with a cross-over but the way I understand it the exhaust pulses from one bank help scavenge the other bank through the cross-over, even with equal length duals it is supposed to have some benefit.
#16
RE: '74 Exhaust question??
I think 78buckshot hit it on the head. I also remember reading where to properly position where to put the "H" pipe, you need to put temp sensitive paint on the exhaust pipe. This is where it gets a little foggy (destroyed too many brain cells in college and the Navy [sm=icon_guiness.gif]) but you either put it at the hot spot or cold spot.
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