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Originally Posted by max8791 I did some research and found few things.
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In any case, the tip of the exhaust should exit at a point where there is a low pressure region to minimise back pressure. It's a cheap form of weak turbocharging.
from http://www.billzilla.org/engexhaust.htm
-------------------------------------------------------------- I would like to increase the horsepower of my car's engine. What's the best way to do this? :: Let exhaust exit more easily - If air resistance or back-pressure makes it hard for exhaust to exit a cylinder, it robs the engine of power. If the exhaust pipe is too small or the muffler has a lot of air resistance then this can cause back-pressure. High-performance exhaust systems use headers, big tail pipes and free-flowing mufflers to eliminate back-pressure in the exhaust system.
from http://auto.howstuffworks.com/question395.htm
-------------------------------------------------------------- How do exhaust headers work to improve engine performance? :: The idea behind an exhaust header is to eliminate the manifold's back pressure. Instead of a common manifold that all of the cylinders share, each cylinder gets its own exhaust pipe. These pipes come together in a larger pipe called the collector. The individual pipes are cut and bent so that each one is the same length as the others. By making them the same length, it guarantees that each cylinder's exhaust gases arrive in the collector spaced out equally so there is no back pressure generated by the cylinders sharing the collector.
from http://auto.howstuffworks.com/question172.htm
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ok, iam not so good in technical stuff. so, if i add exhaust to 1&4 and 2&3 cylinders then i can gain some acceraltion with no bad effect on engine
correct me
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still technically dumb |
to answer your question : it depends on how well it is done, but the basic concept is correct..
it just depends on how well you can execute it. But I feel you should go ahead only if you have an experienced person doing it who has done it before .. and not some person who has just read some books/articles about engines and gas flow etc
Also you need a proper understanding of the valves on your engine
and the torque characteristics of the engine at diff speeds
- regarding the stuff u did research on .. I suggest you can try playing with that back pressure part first.. then later on move to advanced stuff like header design (1 &3 and 2 & 4 connection)
nice to see ppl doing doing so much RnD and trying to learn ..
best of luck dude ...