Quote:
Originally Posted by Crazy_pilot
^^^What he said. The whole point of a "performance" air intake is to pull low restriction, cold air into the engine. Cold air is more dense, therefore you get a bit more power. Air under the hood is hot, mainly because of that big hunk of aluminum that makes all the noise. Drawing in the hot air from the engine bay not only robs you of power, it also makes your engine more prone to knock (if you're trying to drive the wheels off it) by bringing in a hotter air charge. Mainly with a cone filter you get more noise, and to many people noise = power, so  [/hijack]
Back on topic, with the Flatt replica being solidly welded/bolted together, is there any concern about stress on the system from the engine twisting under load? The stock exhaust has the sprung flanges into and out of the main cat, giving it some room to flex. I know our engines aren't exactly jumping around the engine bay, but would you be concerned about long term problems? Stress cracking at the welds, etc? |
I have done several systems without flex-joints without issue. more or less as long as it is hung properly, the hangers take all the stress. His system is hung from front to back using... Head bolts, Rear trans hanger, resonator hanger, two tail pipe hangers. Using this, the front of the system is suspended attached to the engine/trans (the things that move) so there is literally no stress there. the othe hangers are rubber so they will flex and move the little bit that the exhaust does move back there.
Tom